*start*
00453 00024 US 
Date:  2 JAN 1978 1502-PST
From: MCDANIEL
Subject: [ifs] diagnostic files
To:   D1Users:

There is a new version of the memory diagnostics on ifs. this version
represents a change in the file organization of the diagnostics.
Labels are unchanged (program labels are unchanged,
file names are different in many cases).  You should get a new version 
of the diagnostics, and it is reasonable to not get new listings.

Gene
-------
*start*
00481 00024 US 
Date:  6 JAN 1978 0325-PST
From: MCDANIEL
Subject: new diagnostics on ifs
To:   D1Users:

There are new versions of kernel and mem*. diagnostics on ifs.
This release incorporates a "midas subroutine" for turning off the interim
display:

displayOff;G 

will cause the display to be turned off. the  code has a breakpoint
at the end.

This release includes requested changes to MemD.I will send another
message after I have checked it out on the d1.
-------
*start*
00491 00024 US 
Date: 10 JAN 1978 0228-PST
From: FIALA
Subject: D1Lang
To:   D1Users:

On January 3, I dumped a new D1Lang with the following changes:
1.  MCP[i] deimplemented
2.  MOS_, B_Junk, GenOut_B added.
3.  TestSyndrome_ renamed LoadTestSyndrome
4.  Renumbering of some IFU section functions.

These changes are in response to some decoding changes being made on
the IFU board.  See Severo O. for details about IFU changes, Doug C. for
details about LoadTestSyndrome.
-------
*start*
00316 00024 US 
Date: 12 JAN 1978 1841-PST
From: MCDANIEL
Subject: new diagnostics on ifs
To:   D1Users:

There are new diagnostics (all) on ifs. They reflect a change in
preamble that prevent the "interations" word in IM from being incremented
properly.

There is a fix to a minor bug in memc.
Gene
-------
*start*
01060 00024 US 
Date: 13 JAN 1978 0859-PST
From: FIALA
Subject: <D1>D1MidasRun.dm;53
To:   D1Users:

This release of Midas fixes all of the printout problems reported to me
and also has the following changes:

1.  Some bugs in the DMux simulator related to Hold are fixed;
2.  The special Alto microcode replacing DoStrobe and ReadDmux has
been added.
3.  The rest of the multi-radix I/O stuff is commissioned (probably
uninteresting for D1 Midas) and features for symbolic and address
printout in the main menu areas.  It is now possible to display
memories which hold instruction addresses (TPC, LINK, and OLINK
but not CIA, BNPC, etc.) as symbol+/-offset by means of a command
file command (e.g., "L A10 Search  " will cause the value of the item
at A10 to be searched for in the symbol table).
4.  MAP and VM are now more easily testable (not in TestAll, however),
although you will have to setup the map and address ranges carefully
before testing VM.

The new Alto microcode results in about a factor of 10 speedup
in testing DMux stuff.
-------
*start*
00263 00024 US 
Date: 13 JAN 1978 2254-PST
From: FIALA
Subject: Admin
To:   D1Users:

I have renamed the <D1DOCS>D1users.msg file into the <SECRETARY> directory
where all the other message files are kept.  I think that J. Jenkins
maintains these.
-------
*start*
00231 00024 US 
Date: 16 JAN 1978 0415-PST
From: FIALA
Subject: <D1>D1midasrun.dm;54
To:   D1Users:

This release includes changes to the Set-Clock, Reset, and DMux printout
code for the clock board design changes.
-------
*start*
00685 00024 US 
Date: 16 JAN 1978 1805-PST
From: MCDANIEL
Subject: new kernel on ifs
To:   D1Users:

There is  a new kernel diagnostic on ifs. All bugs known to me are fixed. There are
three new "midas" subroutines:
xorTaskCirc	xors the flags.testTasks bit in FLAGS
xorHoldSim	xors the flags.holdSim bit in FLAGS
xorTaskSim	xors the flags.taskSim bit in Flags

These subroutines remove the necessity of knowing which bit to set in the FLAGS
control word in Kernel (FLAGS controls the two simulator functions and it controls
whether or not Kernel tries to execute the diagnostics at different task levels
(flags.testTasks).

Kernel runs tasks [0..7] without error.
Gene
-------
*start*
00283 00024 US 
Date: 17 JAN 1978 1227-PST
From: FIALA
Subject: <D1>D1midasrun.dm Release
To:   D1Users:

New Midas release fixing some problems which caused Midas to swat
following command file errors.  Several other changes also.  Please
report problems by Sndmsg.
-------
*start*
00306 00024 US 
Date: 18 JAN 1978 1525-PST
From: WILLIE-SUE
Subject: D1 alu definitions file
To:   D1Users:

	[ifs]<d1source>d1-aludefs.mc claims to be the truth about the
alu, for code that wishes to run with the alto emulator.
	Please read the comments at the beginning of the file.
  WS
-------
*start*
00325 00024 US 
Date: 19 JAN 1978 0922-PST
From: WILLIE-SUE
Subject: more on alu defs
To:   D1Users:

	New version of [ifs]<d1source>d1-aludefs.mc.  Again, please
read the note contained in the file.  ALU function A0 has been
restored; aluf[15] gets used by BITBLT and then restored to a
standard value.
  WS
-------
*start*
00189 00024 US 
Date: 27 JAN 1978 0953-PST
From: FIALA
Subject: <d1>D1midasrun.dm release
To:   D1Users:

New Midas makes latest requested changes for read/write of CACHEA.
-------
*start*
00201 00024 US 
Date: 27 JAN 1978 1733-PST
From: FIALA
Subject: <D1>d1midasrun.dm;61
To:   D1Users:

This release fixes bug in CACHEA read-write and adds more speeds
to Set-Clock menu.
-------
*start*
00488 00024 US 
Date:  1 FEB 1978 2003-PST
From: TAFT
Subject: Dorado I/O Microprogramming
To:   D1Users:

I have prepared a brief memo (2 pages) describing my experiences
in writing the microcode for the Dorado Ethernet.  My main point
is that the Dorado's branching scheme appears not to be
very well-suited to the needs of I/O microcode.  This memo is
an exercise in hindsight, and obviously I don't expect to influence
the design of the machine at this late date.
	Ed
-------
*start*
00157 00024 US 
Date:  1 FEB 1978 2004-PST
From: TAFT
Subject: That memo...
To:   D1Users:

is available as <Taft>D1IOProg.bravo (or .ears).
-------
*start*
00446 00024 US 
Date: 14 FEB 1978 0944-PST
From: TAFT
Subject: LdTPC restriction
To:   D1Users:

Ken has informed me of the following restriction on the use
of the LdTPC operation:  it may not be used if the task whose
PC is being loaded can wake up simultaneously.  If control
were to switch to that task at the end of the LdTPC instruction,
it would start running at the old PC and the effect of the LdTPC
would be ignored.
	Ed
-------
*start*
00337 00024 US 
Date: 15 FEB 1978 1501-PST
From: FIALA
Subject: <D1>D1midasrun.dm release
To:   D1Users:

New release fixes bug in LoadDMD routine so that CACHEA write might
work.  Large clock speed values in menu that are not supported by the
hardware are eliminated.  Printout bug in Config is fixed (now "notConfig").
-------
*start*
01322 00024 US 
Date: 15 FEB 1978 1716-PST
From: PIER
Subject: Model 1 changes
To:   Dorado Users Group:, boggs

I am soliciting immediate comments on the following two intentions
for the Model 1 control section:

1. All the control ram chi[ps will be moved to Control B. All the
randonm logic will live on control A. Control B will be physically
below Control A in the cage. Control B will have a manifold/muffler
interface as well as the normal interface, so it can be
checked out without control A from Midas.
Microcode impact: none
Midas impact: new code to use and reset extra checkout interface
Backpanel impact: reverses positions of the two boards

2. Task specific NoTask is deleted and replaced by a counter which
is incremented by execution of TaskingOOff and decremented by
the execution of TaskingOn. When the counter reaches -1 (17b, 4 bit
counter), tasking is enabled and decrementing is disabled. Overflowing
by incrementing brings disaster.
Microcode impact: none, I think. Need input from Taft, Fiala.
Midas impact: replaces whatever code manages task specific tasking
with management of the counter. We may have to think about this
a little.

Item 1 will be implemented immediately for the new backpanel unless
someone supplies a good reason not to. Item 2 is not urgent.

Thank You
Ken
-------
*start*
00430 00024 US 
Date: 15 FEB 1978 1721-PST
From: PIER
Subject: Addition to previous message, Model 1 control
To:   Dorado Users Group:, boggs

I neglected to add that the new NoTask scheme will not prevent
blocking, but will prevent pre-emption. Thus, a task would
normally increment the register, do its thing, then decrement
the register, then BLOCK. The block is effective even though
the register is # 17b.

K
-------
*start*
00381 00024 US 
Date: 17 FEB 1978 1517-PST
From: MCDANIEL
Subject: new diagnostics
To:   Dorado Users Group:

There are new diagnostics on the d1 debugging disk and on ifs.
All the diagnostics appear to work. The problem w/ kernel
bombing during the link test has been fixed. The problem w/
not being able to start memC at begin after an error has
been fixed.
Gene
-------
*start*
00774 00024 US 
Date:  9 MAR 1978 1900-PST
From: FIALA
Subject: <D1>D1MidasRun.dm release
To:   Dorado Users Group:

The new release has primarily the following changes:

1.  CACHED is implemented.
2.  "DisHold" is removed for VM, VMX, and MAIN, so that these memories
should work correctly on cache misses if RunRefresh is true (? let me
know if this is so ?)
3.  Prettyprint for CACHEA will now print the contents of the 16 CACHED
entries associated with that CACHEA entry as well as the flags and VA.
4.  Junk IO reset is incorporated in the Reset and Go at new address code.

The addresses for CACHED are in the range 0 to 3777 where the top five
bits of address refer to the row, next two bits to the column, and low
four bits to the word in the cache.
-------
*start*
00281 00024 US 
Date: 14 MAR 1978 1707-PST
From: DEUTSCH
Subject: New MicroD
To:   Micro Users:

This release passes all memory and symbol definitions for unknown memories
to Midas unchanged, at Ed Fiala's request.  No changes from the
microprogrammer's viewpoint.
-------
*start*
00591 00024 US 
Date: 15 MAR 1978 1624-PST
From: ORNSTEIN
Subject: A Small Step for the Dorado Eleven
To:   Dorado Users Group:
cc:   Taylor

Today we passed a modest milestone in that the Dorado displayed a mouse-controlled
cursor whose pattern registered keystrokes, mouse button pushes, etc.

This means that the junk and display tasks worked in conjunction with the
Emulator task executing BCPL Alto code from the cache. 
The next step is to get the storage working  with Midas so that we can load some
non disking program (SIL probably) into the main memory and run it.
-------
*start*
03334 00024 US 
Date: 16 MAR 1978 0306-PST
From: FIALA
Subject: <D1>D1MidasRun.dm;68 and new Microassembler
To:   Dorado Users Group:

There are new releases of Midas and the Dorado microassembler.
You should be sure to get the new Midas and new MicroD before getting
the new microassembler since the new assembler produces some stuff
that previous versions of Midas won't load.

To get the new Midas, first delete the obsolete command files
mx.midas, mc.midas, and md.midas, then load <D1>d1midasrun.dm;68 as
usual from Maxc1.  The changes in the new Midas are as follows:

1.  VM, CACHEA, CACHED work correctly finally.
2.  Reset code has been modified to fix all known bugs.
3.  Reset before Go at new address resets all the peripherals.
4.  A new read-only memory called MD is available that will allow
you to look at the task-specific MD register, and a command file
will show all 16 MD registers; the former MC, MD, and MX command
files were renamed to MMC, MMD, and MMX to be consistent while not
conflicting with the MD command file for showing MD.
5.  Items which change on the display are now "*"ed to indicate
what has changed state; this will probably be useful after breakpoints.
6.  DMux pretty-printing for the disk controller is implemented and a
command file DSK is provided to show the disk DMux signals.
7.  A new fake memory TASKN is provided to show the contents of
registers containing task numbers symbolically.  The new assembler
outputs symbols in this memory for convenience during debugging.
8.  A new fake memory DEVICE is provided to show the contents of
TIOA symbolically; the new assembler allows you to define device
numbers symbolically for convenience during debugging.
9.  The Midas pretty-printing procedures now use the TASKN, DEVICE,
and BR address symbols during printout.  Several bugs were fixed
in the microinstruction pretty-printer.

The new assembler consists of a new <D1Docs>D1Assem.Ears file
describing the changes, new <D1SOURCE>D1lang.mc and <D1SOURCE>D1Alu.mc.
You may need a new alu defs file from Willie-Sue also.  The new assembler
outputs additional memory address symbols for use with Midas, as
discussed above, and you need LPD's new MicroD to pass these safely
through.  The changes in the assembler are as follows:

1.  A new compact form for specifying EF/IF format shift instructions
is available.  Although the old form is still defined, please convert
your microcode to the new format so that I can delete the obsolete
form.  The new shift format is discussed in the documentation.

2.  BR[name,n] defines a base-register address for use in MEMBASE_name
IFUM assembly, and symbolic printout by Midas (see documentation).

3.  DEVICE[name,n] defines a device number.

4.  TASKN[name,n] defines a task number (EMU and FLT predefined).

5.  EQV defined as a synonym ALU operation for XNOR and #.

6.  H3 literals allow you to write statements like
	Store_Rtemp, Md_T, T_0H;
which read the contents of ALUFM as a literal value.  This may be useful
occasionally.

As you start defining task numbers symbolically, please limit the
names to 3 characters since a future change in Midas will print the
task-specific register addresses symbolically, and long task names
won't fit in the display area.  (e.g., TIOA 17 will be TIOA FLT).

Please report any problems.
-------
*start*
00301 00024 US 
Date: 16 MAR 1978 2034-PST
From: DEUTSCH
Subject: New release of Micro
To:   Micro Users:
cc:   ludolph

Only minor changes.  See the documentation.  The purpose of the release
was to alleviate a space constraint which prevented the Dorado
diagnostics from assembling.
-------
*start*
00249 00024 US 
Date: 17 MAR 1978 0848-PST
From: MCDANIEL
Subject: new [ivy]<d1>memA.dm
To:   Dorado Users Group:

There is a new version of memA(ll) on ivy. It is compatible with
the new release of midas and the new assembler.
Gene
-------
*start*
00287 00024 US 
Date: 17 MAR 1978 1550-PST
From: DEUTSCH
Subject: New release of Micro -- apologies
To:   Micro Users:
cc:   ludolph

The bit table primitives (other than MEMBT, which was never implemented anyway)
have been restored by popular demand.  No other changes.
-------
*start*
01518 00024 US 
Date: 20 MAR 1978 1745-PST
From: FIALA
Subject: <d1>d1midasrun.dm;69
To:   Dorado Users Group:

This release adds the subroutine call feature requested by G. McD and
fixes various signal inversion hardware changes in the Pipe readout.
The CALL feature allows a microprogrammed subroutine to be called with
0 or 1 arguments.  To do this, type:

	SUBR(arg)

where SUBR is an IM or IMV address such as 141 or FOO+3, and where arg
evaluates to a 16-bit number.  If arg is passed, it will be loaded into T
before the subroutine is called.

The call feature is implemented by planting a breakpoint instruction
at absolute location 7776 in the microstore.  This location is loaded
with an appropriate value by Reset; you must not use 7776 in any
microprograms you write.  The next release of D1LANG will output an
appropriate instruction for 7776 when it assembles the END statement.
In the meantime, microprograms will still work unless 7776 is unluckily
used by MicroD.

The prettyprint routine and readout of the Pipe stuff for Syndrome
and for several map bits has been changed in accordance with 
hardware changes reported by KP.

I am proposing to change the following names in D1LANG in the next
release because of the various signal inversions which are in the
memory system hardware; if this is inconvenient, please come discuss
these with me:

B_PIPE2 to B_NOTPIPE2
B_PIPE3 to B_NOTPIPE3
B_PIPE4 to B_NOTPIPE4
B_FAULTINFO to B_NOTFAULTINFO
B_ERRORS to B_NOTERRORS
B_MAP to B_NOTMAP.
-------
*start*
00236 00024 US 
Date: 28 MAR 1978 2314-PST
From: FIALA
Subject: <D1Source>D1Lang.mc release
To:   Dorado Users Group:

I have just released a new D1Lang.mc which fixes a bug in DEVICE
reported by EAT.  No other changes.
-------
*start*
00240 00024 US 
Date: 29 MAR 1978 0953-PST
From: MCDANIEL
Subject: minutes of the Dorado working retreat are available
To:   Dorado Users Group:

see <mcdaniel>dorado-yosemite.minutes or
<mcdaniel>dorado-yosemite.ears

Gene
-------
*start*
00360 00024 US 
Date: 31 MAR 1978 1045-PST
From: DEUTSCH
Subject: New Micro and MicroD
To:   Micro(D) Users:
cc:   ludolph

This release runs only under OS 14 and later -- now is the time to
update your disks if you haven't already done so.  MicroD has more space,
and always does a Junta -- the /J switch has been abolished.
No other changes.
-------
*start*
01261 00024 US 
Date:  5 APR 1978 1217-PST
From: FIALA
Subject: <d1>d1midasrun.dm;71
To:   Dorado Users Group:

This release of Midas contains the following changes:
1.  DMux signal changes on MemX
2.  SkipVEql, SkipVGr, and SkipVLs are replaced by SkipE, SkipNE, SkipG,
SkipL, SkipLE, and SkipGE in Midas command files.  (i.e., the three existing
actions are renamed and three more actions added)
3.  The Test and Test-All actions are modified to report some additional
error summary information and the right-column of the standard display
is modified to show the new information.  Now, typing <cr> after a test
has failed will continue running the test indefinitely while accumulating
information about the errors that occur.  When the test is stopped by
typing control-C (or bugging Abort), the summary information about the
errors will be displayed.
4.  A WriteDT action has been added for command files that will append the
date and time to the current output file.
5.  The WriteMessage action for command files has been modified so that
the "\" character is replaced by a blank.  This is provided so that
blanks can be inserted at the beginning of a message.

Note: you should upgrade to OS version 14 or later for this release of
Midas.
-------
*start*
00523 00024 US 
Date: 10 APR 1978 1249-PST
From: MCDANIEL
Subject: [ivy]<d1>memA.dm
To:   Dorado Users Group:

There is a new version of the memory diagnostic. It supports a facility
that causes the memory storage diagnostics to run with MCR set up to
force all misses to select a particular column. This has the effect of
making the cache appear to be one column wide. This feature can
be used in cnjunction with the memory tasking code as well.

The listing and documentation in the d1 lab are new.

Gene
-------
*start*
00470 00024 US 
Date: 12 APR 1978 2251-PST
From: MCDANIEL
Subject: new documentation for diagnostics
To:   Dorado Users Group:

I've prepared a list of some of the most common subroutines called
from Midas (or seen frequently in listings). The list is alphabetically
ordered and contains a short summary of what the routines do.
Hopefully this will make it easier to use/understand the
diagnostics. Please mention to me any routines I've forgotten.
Gene
-------
*start*
00246 00024 US 
Date: 13 APR 1978 1435-PST
From: FIALA
Subject: <d1>D1MidasRun.dm release
To:   Dorado Users Group:

This new release fixes several problems in prettyprinting the
STKRB and PJUNK DMux words and the D1OUT register.
-------
*start*
00222 00024 US 
Date: 24 APR 1978 1409-PST
From: FIALA
Subject: <D1SOURCE>D1LANG.MC release
To:   Dorado Users Group:

This release allows KNOWRBASE to be used with RM addresses as well as
RM region names.
-------
*start*
00210 00024 US 
Date: 25 APR 1978 1826-PST
From: FIALA
Subject: <D1>D1MidasRun.dm;75 release
To:   Dorado Users Group:

This release adds the prettyprinting stuff for the ethernet DMux signals.
-------
*start*
00745 00024 US 
Date: 26 APR 1978 1251-PST
From: ORNSTEIN
Subject: Friday Meeting and IFU
To:   Dorado Users Group:

1. Due to the Friday picnic, let us postpone our regular meeting to 1:30PM

2. We are considering two reductions in IFU function:

		a) Eliminating the whole business of switching instruction set
		for the ensuing instruction

		b) Reducing the number of bits for helping to initialize the
		emulator's membase from 3 to 2 (the bits from the decoder RAM)

If you have strong feelings about either or both of these, come see me. And be
prepared to defend assertions about the need for the function with illustrative
examples of microcode showing how and where you will be hurt if we take it out.
Ta, ta...
Severo
-------
*start*
00629 00024 US 
Date:  9 MAY 1978 1413-PDT
From: FIALA
Subject: <D1>D1MidasRun.dm release
To:   Dorado Users Group:

A new release of midas is on <D1>D1MidasRun.dm.  This release adds
an IOReset during a step or go at a new address.  This is to fix a
problem with the ethernet controller that results when Midas executes
instructions on behalf of the ethernet controller's tasks.

A side effect of the change is that you may inadvertently change
the run-enables (RunRefresh and EnRefreshPeriod') if you have failed
to execute a Reset command after firing up Midas.  Please let me know
if this causes any trouble.
-------
*start*
00229 00024 US 
Date: 10 MAY 1978 0044-PDT
From: BOGGS
Subject: Model 0 is on the net
To:   Dorado Users Group:

I am logged into Maxc from the Model 0 Dorado using a Chat booted
from the Ethernet.
	/David and Ed
-------
*start*
00626 00024 US 
Date: 30 MAY 1978 1129-PDT
From: DEUTSCH
Subject: New MicroD
To:   Micro(D) Users:
cc:   kierr

This release has approximately 1000 words more free space.  No other changes
(in particular, still places CALL instructions at even locations on D0).

If you encounter difficulties with MicroD at any time, first, please take the
time to fetch the latest version from [Iris]<D0> or [Maxc1]<Alto>.  If you
still have problems, please put the .DIB file on some file server before you
send me a message, and tell me in your message where I can find this file.
This will save everyone time and trouble.
-------
*start*
00255 00024 US 
Date: 13 JUN 1978 1248-PDT
From: DEUTSCH
Subject: New release of Micro
To:   Micro(D) Users:

This release has roughly 1800 words more free space and can assemble the
complete Dorado microcode.  Please report any problems.
-------
*start*
01145 00024 US 
Date: 19 JUN 1978 1752-PDT
From: FIALA
Subject: Dorado Model 0 Hardware Manual
To:   Dorado Users Group:

The final release of the Dorado Model 0 Hardware Manual is now available
as <D1Docs>D1Man-Mod0-A.press and <D1Docs>D1Man-Mod0-B.press.  These two
files are a revision of the 17 November 1977 release of the hardware manual
which was D1manual.ears.

This is intended to be the final release of the manual describing the model
0 Dorado, and none of the changes planned for Model 1 are (intentionally)
documented in it.  The main changes since the 17 November release are as follows:

1.  Addition of Junk IO section.
2.  Addition of DMux signals and other revisions to Alto Debugging Interface
3.  Many changes in Figure 9 (Pipe, Config, etc.)
4.  Some changes in the Control and Slow IO chapters mostly related to task
switching stuff, including model 0 bugs.
5.  The shifter change for D0 compatibility (not yet changed in the model 0
hardware, but will be changed soon).

My intention is to start revising the manual to describe the Model 1, and the
next release of the manual will be a first cut at that.

-------
*start*
00260 00024 US 
Date: 22 JUN 1978 2307-PDT
From: DEUTSCH
Subject: New MicroD
To:   Micro(D) Users:

On [Maxc1]<Alto> and [Iris]<d0>.  Fixes a bug which prevented placement
of some very large programs.  Major internal (but no external) changes.
-------
*start*
00320 00024 US 
Date: 25 JUN 1978 1351-PDT
From: MCDANIEL
Subject: new kernel on ivy, d1debugging disk
To:   Dorado Users Group:

There is a new version of the kernel diagnostics that understands
the new shifter implementation and that fixes a bug associated with
using the hold and task simulator.
Gene
-------
*start*
01249 00024 US 
Date:  5 JUL 1978 1733-PDT
From: PIER
Subject: mea culpa plus new features
To:   Dorado Users Group:

1. Page 34 of the Dorado Hardware Manual - Model 0, should be amended
in paragraph 1 to read:

	4. Do not do H3_Input, BLOCK, BDispatch, BigBDispatch, Multiply, TaskingOn,
	or Tasking Off in an instruction that might cause HOLD. Do not do the
	branch FOLLOWING a BDispatch or BigBDispatch in an instruction that
	might cause HOLD.


That is, do not do memory operations in the instruction with a dispatch OR in the
next instruction.

2. A proposal to reduce the number of CALL locations in Model 1 has been made
and seconded. The number of CALLs is halved, from one-eitghth of the
total number of locations to one-sixteenth. Only instructions with the bottom
four bits of TNIA equal to 0 will be detected as CALLs. 

This modification aids in placement of subroutines and dispatches. It reduces the
total number of subroutine locations in the IM to 256 and the number of "local"
subroutines to four per page. An informal survey of emulator authors felt that
this was not a real restriction.

This is a revokable feature if for some unanticipated reason we run out of CALL
locations. It applies to Model 1 ONLY.


K
-------
*start*
01082 00024 US 
Date: 5 Jul 1978 6:17 pm (Wednesday)
From: Taft
Subject: "Standard" Alto Emulator
To: D1Users^
cc: Taft

The sources and command files for building a basic Alto Emulator are now
contained in [Ivy]<D1Sources>Aemu.dm.  This includes Alto emulator, BitBlt,
and I/O microcode, but not Mesa or other microcode.  (D1lang and D1-Aludefs
are not contained in the dump file.)

File Aemu.mb is the result of assembling this, and Aemu.midas is the command
file for loading it into the Dorado.

The organization that Willie-Sue and I have in mind is that other emulators
(Mesa, Smalltalk, Lisp) be built using the basic Alto emulator as a base.  The
basic emulator will contain hooks for getting into the other emulators, and these
hooks will have stubs hung on them in the basic emulator.  For example, the
JMPRAM instruction now has a test for Ram address = 420 (the Mesa emulator
entry point in the Alto), and branches to MGO if so.  Aemu.dm contains a file
called MesaStub.mc that diverts MGO to Trap.  Presumably other emulators can
receive similar treatment.
	Ed

*start*
00241 00024 US 
Date: 7 Jul 1978 9:51 am (Friday)
From: Sosinski
Subject: Temperature Sensing
To: D1users^

There is a sample Temperature Sensing circuit for the Dorado Model 1 Boards
located on ivy <D1Logic>tempSense.sil.

Charlie

*start*
00476 00024 US 
Date: 11 JUL 1978 1220-PDT
From: DEUTSCH
Subject: Release of MicroD 2.1
To:   Micro(D) Users:

Internal changes have resulted in an increase of about 4000 words in free space.
No one should ever run out of space in MicroD again.

A version of MicroD is in the works that will allow you to assemble parts of
your microprogram separately and then run the .MB files through MicroD
together to produce a single .DIB file.  ETA is end of next week.
-------
*start*
00248 00024 US 
Date: 11 JUL 1978 1222-PDT
From: DEUTSCH
Subject: oops
To:   Micro(D) Users:

What I meant, of course, is that MicroD 3 will allow you to run several
.DIB files together to produce a single .MB file, not vice versa.
-------
*start*
00374 00024 US 
Date: 11 JUL 1978 1755-PDT
From: WILLIE-SUE
Subject: emulator sources
To:   Dorado Users Group:

	New versions of many emulator sources files.  You should load
from [ivy]<d1source>aemu.dm.
  WS
changes:  AT declarations for emulator at 2000+ addresses
	display code and BitBlt are now happy with each other
	disk task should not hang anymore
-------
*start*
00218 00024 US 
Date: 11 Jul 1978 9:09 pm (Tuesday)
From: Taft
Subject: D1Lang
To: D1Users^
cc: Taft

A new version of [Maxc]<D1Source>D1Lang.mc is released.  The only change is
to fix a bug in the DPF macro.

*start*
01544 00024 US 
Date: 20 JUL 1978 1515-PDT
From: DEUTSCH
Subject: MicroD 4.0
To:   Micro(D) Users:

This new release of MicroD has one major new feature: you can now assemble parts
of your program separately with Micro, and run the .DIB files through MicroD
together to produce a single .MB file.  For example, suppose your program
is made up of 4 files called prog1.mc through prog4.mc, plus d1lang.mc,
aludefs.mc, and mydefs.mc (your own definitions).   One way to assemble your
program might be:
	micro d1lang aludefs mydefs prog1
	micro d1lang aludefs mydefs prog2
	...
	microd prog/o prog1 prog2 prog3 prog4
where the output goes on prog.MB and prog.DLS.  A better way that saves more
assembly time is to pre-assemble the definitions:
	micro savedefs/s d1lang aludefs mydefs
	micro savedefs/r prog1
	micro savedefs/r prog2
	...
which essentially saves a snapshot of Micro on savedefs.ST after assembling
your definition files.  (If you do do this, you must be careful to reassemble
the definitions and remake the .ST file whenever you change your defs file
or whenever Micro or the standard definition files change.)

There is no requirement that you do things in this way: if you only have a
single .DIB file, everything will work as before.

I am leaving for a week's vacation tomorrow (Friday 7/21) night, so you may
want to keep an older version of MicroD somewhere.  The new MicroD has
successfully processed the Dorado Alto Emulator, so it is unlikely that any
problems will arise.  Please report all problems to me.
-------
*start*
00823 00024 US 
Date: 20 JUL 1978 2237-PDT
From: DEUTSCH
Subject: P.S. on MicroD 4.0 release
To:   Micro(D) Users:

There is a known glitch in MicroD 4.0: the amount of free space it prints
out at the end is always tiny (usually 1 word).  Be assured that MicroD
is nowhere near running out of room -- the next release will fix the
message.

I was asked how you declare exported (defined here, used in another file)
and imported (used here, defined in another file) names.  You don't!
Any symbol used as a branch address and not defined in the group of files
you assemble together is assumed imported: Micro gives you a list of them
at the end of assembly.  All labels are assumed exported.  MicroD will
complain if you import (use) a name that isn't exported (defined) in
any of the .DIB files you give it.
-------
*start*
00437 00024 US 
Date: 21 JUL 1978 1640-PDT
From: DEUTSCH
Subject: MicroD 4.0 withdrawn
To:   Micro(D) Users:

Numerous users have encountered difficulties with this new release; hence
I have withdrawn it, and deleted it from Maxc and Iris.  You should retrieve
MicroD from your favorite server again (you will get the previous release, 3.0).

A repaired version with multi-file capability should appear in about 2 weeks.
-------
*start*
00259 00024 US 
Date: 25 JUL 1978 1439-PDT
From: SUZUKI
Subject: Mesa emulator source and object files are on IVY
To:   Dorado Users Group:

Mesa emulator source file is in MESAMC.DM at [IVY]<D!SOURCE> and
object file is [IVY]<D1>EMU.MB.
Nori
-------
*start*
00264 00024 US 
Date:  1 AUG 1978 1543-PDT
From: DEUTSCH
Subject: Release of MicroD 4.1
To:   Micro(D) Users:

The new MicroD contains the promised multiple-file feature, and appears to
be debugged.  Documentation is on Maxc1 <ALTODOCS>MICROD.TTY.
-------
*start*
00235 00024 US 
Date:  1 AUG 1978 1637-PDT
From: DEUTSCH
Subject: Re-release of MicroD 4.1
To:   Micro(D) Users:

A serious bug has been found and fixed.  New files are on the usual places
(Maxc1 <Alto> and Iris <D0>).
-------
*start*
01126 00024 US 
Date: 2 Aug 1978 9:56 am (Wednesday)
From: Suzuki
Subject: Common D1 microprogramming errors
To: d1users^
cc: Suzuki

This is the summary of the talk I gave at the last D1 meeting.

The experience of D1 microprogramming showed that subtle bugs are mainly
caused by simple mistakes not by conceptual mistakes.  These bugs are very
hard to find, sometimes it takes a couple of days to find, and can be
mechanically picked up at source code level.  Probably it is a good idea to locate
anomalies which might lead to these errors by MicroD or some other software
and give warnings.

1.  Rbase incompatibilities.
	Almost all the time, if a location is the target of several jumps, or
calls, then Rbase value is expected to be the same.  

2. Membase incompatibilities.
	Similarly when a control comes to a location, Membase value is
expected to be the same almost all the case.  

3. Timing
	Shifter or R register condition branch expects the value of R register to
be frozen two instructions before.  

If these errors are picked up by software, the debugging time would have been
two weeks shorter.

Nori
*start*
00223 00024 US 
Date:  2 AUG 1978 1525-PDT
From: DEUTSCH
Subject: Release of MicroD 4.2
To:   Micro(D) Users:

4.2 has about 4000 more words of free space than 4.1 but is supposed to be
otherwise identical.
-------
*start*
01676 00024 US 
Date:  4 AUG 1978 0942-PDT
From: FIALA
Subject: Model 0 Midas and Model 1 HW Manual
To:   Dorado Users Group:

There is a new release of <D1>D1Midasrun.dm;77 on Maxc1 which fixes a
bug in printout of syndrome.

The first release of the model 1 hardware manual is on <D1Docs> on Maxc1.
It incorporates the changes in the control and processor sections.
The material for interfacing io devices formerly in the Slow IO and
Fast IO chapters has been removed.  It will be put in some other
document eventually.  The chapter on Alto Debugging Interface has
also been removed, and is now in a document called "Debugging Interface"
also stored on <D1Docs>.  The muffler signals formerly in this chapter
are being moved to the Midas documentation which isn't ready yet.
Some of the hardware details in "Control Section" were also removed.
Some of my editorial comments and opinions in the "Memory Section"
chapter have been moved to a new chapter called "Performance Issues"
and a little of the discussion on hardware errors formerly in the
"Alto Debugging Interface" chapter have been moved to a new chapter
called "Error Handling" which also discusses the new error handling
stuff by the processor.

Still missing from the hardware manual are the following:

1.  Chapters on "Disk", "Display Controller", and "Ethernet"
2.  TIOA device numbers assigned in the "Slow IO" chapter.
3.  Task numbers used by standard peripheral device handlers in the
"Slow IO" chapter.
4.  All the new stuff for the "IFU section" chapter.

I expect to have the Model 1 Midas manual ready later today and the
Model 1 Midas and Assembler ready next week or the week after.
-------
*start*
00301 00024 US 
Date: 10 AUG 1978 1547-PDT
From: PIER
Subject: EclDict.analyze
To:   Dorado Users Group:

Latest version on Maxc<sil>EclDict.Analyze. Minor corrections to
timing analyzer section only. Thanks due to Will Crowther for
reviewing the analyzer section for correctness.
Ken
-------
*start*
00560 00024 US 
Date: 11 AUG 1978 2003-PDT
From: FIALA
Subject: [Maxc1]<D1Docs>D1Assem-model1.press;1
To:   Dorado Users Group:

This document describes the Dorado model 1 microassembler which is now
released.  MicroD will require some changes before the new assembler's
output can be loaded.

You may wish to read the appendix that describes differences between
the model 0 and model 1 hardware/assembly language before doing anything
else.

This assembler is in approximate agreement with the model 1 hardware
manual released on 1 August 78.
-------
*start*
00342 00024 US 
Date: 14 AUG 1978 0249-PDT
From: FIALA
Subject: <Altodocs>Micro.press
To:   Dorado Users Group:, hankins, charnley

I have resurrected and revised the ancient Micro document formerly called
Maxc 9.2.  It is now considerably cleaned up and online.  Sources for this
are <D1source>micro1.bravo and micro2.bravo.
-------
*start*
01871 00024 US 
Date: 16 AUG 1978 1712-PDT
From: WILLIE-SUE
Subject: Alto and Mesa emulators
To:   Dorado Users Group:

	The 'standard' emulator for the Dorado is now released. It
comes equipped with Mesa and a reasonably fast Alto emulator.
Retrieve [ivy]<d1>emu.mb and [ivy]<d1>emu.midas. Fire up Midas
and type EMU, then bug READ-CMDS.  When Midas has finished loading
the code, type INITMAP;G.  (If the code breaks at NOMSA, it thinks
there is no main storage - call me or try again.)  When the code
breaks at DONEMSA, type ;P to initiate the boot sequence.  As on the
Alto, the Dorado will boot from the disk, or, if the same various
keys are held down, etherbooting will occur instead.  To restart the
code after a breakpoint or ^C interrupt, set TASK to 16b and type
BOOT;G (keys comment above applies here too).  

NOTE: the necessary parts of the command file POWERON have been
incorporated into EMU.midas.

	New feature: if ALL 3 mouse buttons are held down, the
Dorado ucode will go into its boot sequence, just as if you
had stopped the Dorado and typed BOOT;G to Midas (with TASK
having been set to 16b).  Note: the code does NOT check if
the disk is idle before booting, SO BEWARE.

The rest of this message is of interest to ucode writers only.
	Sources for Emu.mb are on [ivy]<d1source>EmuSources.dm, along
with command files for assembling various pieces of the total
system (to take advantage of the new MircroD feature).
The .ST and .DIB files are on [ivy]<d1source>Emu-dibs.dm.  These
were assembled with [ivy]<deutsch>Micro.run, which makes a .ST file
incompatible with [maxc]<alto>Micro.run; you will get an error
message if you have the wrong Micro.

A detailed exposition of how the sources and command files are
organized is on [ivy]<d1source>MakingEmu.txt.

If you have any questions or complaints, please see me or sndmsg.

	WS
-------
*start*
00565 00024 US 
Date: 18 AUG 1978 1302-PDT
From: DEUTSCH
Subject: New release of Micro
To:   Micro(D) Users:
cc:   ludolph

This long-awaited release fixes all known glitches and offers a speed
improvement of 20-25%.  There is also an on-line reference manual now,
on Maxc1 <Altodocs>Micro.Press.  The release is on Maxc1 <Alto> and Iris <d0>
as usual.  Please report problems.

There are some new features in this release which will be used by the D1Lang
for the Dorado model 1, and possibly by future versions of D0Lang, so you
should get it soon.
------
*start*
00373 00024 US 
Date: 19 AUG 1978 0247-PDT
From: MCDANIEL
Subject: new version of memA
To:   Dorado Users Group:

There's a new version of the memory diagnostic on the debugging disk and
in [ivy]<d1>memA.dm. The address test bug and the 
fault task bug have been fixed. The diagnostic runs without error on 
model 0 when error correction is turned on.
Gene
-------
*start*
00263 00024 US 
Date: 22 AUG 1978 0921-PDT
From: FIALA
Subject: [Maxc1]<D1>D1midasRun/model0.dm;78
To:   Dorado Users Group:

This new release expands the symbol table on the disk for Gene and adds
the changes to Midas.Programs which Ken gave me.
-------
*start*
00181 00024 US 
Date: 23 AUG 1978 1518-PDT
From: DEUTSCH
Subject: New release of Micro
To:   Micro(D) Users:

This release (dated 8-23-78) just fixes two minor bugs.
------
*start*
00236 00024 US 
Date: 29 AUG 1978 1708-PDT
From: JENKINS
Subject: Micro.dl
To:   Micro & Micro(D) Users:
cc:   Jenkins

The name of the above list has been changed, at Peter Deutsch's
request, to

		Micro&MicroDUsers.dl
-------
*start*
00284 00024 US 
Date: 30 AUG 1978 1133-PDT
From: JENKINS
Subject: The ampersand &&&&&&&
To:   Micro-Micro(D) Users:
cc:   Jenkins

Please note that I have replaced the "&" in your 
distribution list name with a "-" and it now reads:

		Micro-MicroDusers.dl

Jeannette
-------
*start*
00225 00024 US 
Date:  8 SEP 1978 1011-PDT
From: OVERTON
Subject: Dorado Backpanel Drawings
To:   Dorado Users Group:

The current Dorado Backpanel Drawings are stored on [ivy]<D1Drawings>DoradoBPDwgs.press.

-------
*start*
00345 00024 US 
Date: 14 SEP 1978 1906-PDT
From: JENKINS
Subject: The name of the list has been changed again ....
To:   Micro-Micro(D) Users:
cc:   Jenkins

Micro-MicroDUsers.dl has been changed again to 

Micro.dl.

All these name changes have a purpose.  Please believe me
even if you don't understand it.

Thanks.

Jeannette
-------
*start*
00299 00024 US 
Date: 18 SEP 1978 0952-PDT
From: DEUTSCH
Subject: Release of MicroD 6.0
To:   Micro-Micro(D) Users:

This version has been on my Ivy directory for 3 weeks and seems solid.
It fixes a couple of bugs related to multiple .DIB files, and also supports
the Dorado model 1.
------
*start*
00328 00024 US 
Date: 19 SEP 1978 1729-PDT
From: DEUTSCH
Subject: Release of MicroD 6.1
To:   Micro-Micro(D) Users:

Now on Iris and Maxc.  Removes the previous limit of 10 .DIB files, and also
a bug which caused a Swat trap if there were 8 or more .DIB files.
There is now no limit on the number of .DIB files.
-------
*start*
00190 00024 US 
Date: 22 SEP 1978 1030-PDT
From: SUZUKI
Subject: Mesa 4.1 on Dorado
To:   Dorado Users Group:, geschke, levin

Mesa 4.1 now runs on Dorado and tested.  
Nori
-------
*start*
00609 00024 US 
Date: 30 SEP 1978 2229-PDT
From: DEUTSCH
Subject: Release of MicroD 7.3
To:   Micro-Micro(D) Users:

This release incorporates the ability to distinguish 3 different versions of the
D0 hardware (with "OR 1" vs. "+1" returns from CALLs, and with slow vs. fast
page switching).  Be sure you assembled your program with the right version
of D0LANG!  There are also minor cosmetic improvements, and some changes in the
placement algorithm to allow fuller packing of the Dorado memory.

I will be gone from 10/1 through 10/8 and will not be reading my on-line mail
during that time.
------
*start*
01192 00024 US 
Date: 12 OCT 1978 1227-PDT
From: FIALA
Subject: Dorado Model 1 HW Manual Release
To:   Dorado Users Group:

A new release of the model 1 Dorado Hardware Manual is available on
[Maxc1]<D1Docs>D1Man-mod1-a.press and D1Man-mod1-b.press.

The major changes are as follows:
1.  Branch new writeup on the IFU, believed to reflect the current design
pretty accurately.

2.  Some renumbering of FF decodes for the processor section.

3.  Changes to FF-controlled shifts (source for B on FF-controlled shift
is now Q; single-register cycles of T and R are now possible).

4.  Addition of the IFetch_ and LongFetch_ operations in the memory section
and rearrangement of the ASEL-FF[0:1] decoding for memory references.

5.  Some revisions to the Control and Memory section chapters.

6.  Nomenclature changes:  "Pd" replaces "H3" everywhere; "Id" replaces
"IFUData"; "opcode" replaces "macroinstruction"; obsolete uses of "H1"
and "H2" removed; "CPReg" replaces "ABMux"; registers with inverted
readout renamed with "'" (e.g., "NotPipe2" renamed "Pipe2'");
IFU section names different:  "PCF_B" replaces "NewPC_B";
"IFUMLH" replaces "DecHi"; "IFUMRH" replaces "DecLo".

-------
*start*
00325 00024 US 
Date: 12 OCT 1978 1230-PDT
From: FIALA
Subject: [Maxc1]<D1Docs>D1midas-model1.press
To:   Dorado Users Group:

A new release of the Dorado model 1 Midas document is available.
Only significant change is the revision of the DMux signal table to
incorporate changes in the ProcH/L DMux signals.
-------
*start*
00270 00024 US 
Date: 12 OCT 1978 1625-PDT
From: DEUTSCH
Subject: Release of MicroD 7.4
To:   Micro-Micro(D) Users:

This release has a better and slightly faster placement algorithm.
No other changes.  Available on [Iris]<d0> and [Maxc1]<Alto> as usual.
------
*start*
01344 00024 US 
Date: 12 Oct 1978 5:21 pm (Thursday)
From: Taft
Subject: Dorado BitBlt interface
To: D1Users^

I am considering ways of modifying the BitBlt subroutine to permit accessing
extended memory.  At present, BitBlt uses the base register in effect at the time
of the call as the base for the BBTable and the source and destination blocks.  I
would like to make a change that doesn't perturb the current interface too much
and yet is flexible enough to be used by all the language interpreters, which
have different ideas about how to manage base registers.

Here is my proposal.  BitBlt will continue to assume that the BBTable lives in the
space defined by the base register selected by MemBase at the time of the call, as
before.  There will be two new base registers, to be used by BitBlt only, that
define the spaces within which the source and destination blocks live.  These
base registers must be set up by the caller.  The source and destination bit map
addresses in the BBTable will be interpreted relative to the respective base
registers.  Upon return from BitBlt, the caller must not assume anything about
MemBase.

This means that the caller must interpret the extended memory flags in the
BBTable and read the bank bits (or whatever) in order to set up the source and
destination base registers for BitBlt.
	Ed

*start*
00499 00024 US 
Date: 14 OCT 1978 1551-PDT
From: MCDANIEL
Subject: new memA on debugging disk
To:   Dorado Users Group:

By using Peter's new MicroD I'm able to generate a version of the
memory diagnostics that includes all the board tests. That diagnostic
is the one on the debugging disk and the one that can be found on
[ivy]<d1>memA.dm. It includes the fio test, which does not
run unless specifically enabled by the operator. The documenttion in
the d1 lab discusses this.
Gene
-------
*start*
00392 00024 US 
Date: 17 OCT 1978 1321-PDT
From: MCDANIEL
Subject: new kernel on debugging disk
To:   Dorado Users Group:

Roger has fixed the task and hold simulator logic in Model 0.
There is a new kernel on the debugging disk (and on <d1>) that
 will use those simulators. The default situation is to not use
them, however. See the documentation for more instructions
Gene
-------
*start*
00746 00024 US 
Date: 20 OCT 1978 1513-PDT
From: FIALA
Subject: <D1Source>D1Lang-model1.mc;10 and <D1Source>D1alu-model1.mc;5
To:   Dorado Users Group:

This new release of the model1 microassembler includes revisions to handle
the hardware as described in the October 11 HW manual plus several other
changes that have occurred since then.

The new assembler is documented on <D1Docs>D1Assem-model1.press.  However,
note that the dispatch table revisions to the assembler are not implemented
yet; continue to use AT and GLOBAL for placement declarations until further
notice.

A list of 50 or so hardware, assembler, and other differences between the
model 0 and model 1 Doradoes is listed in an appendix to the assembler
manual.
-------
*start*
00346 00024 US 
Date: 23 OCT 1978 1616-PDT
From: MCDANIEL
Subject: please modify your buildbackuptemplate.cm
To:   Dorado Core Group:

We agreed a while ago to keep prescan listings on [ivy]<doradodrawings> for
each board. This will only happen if you modify your buildBackupTemplate 
accordingly. So, please modify ....etc.
Gene
-------
*start*
00222 00024 US 
Date: 23 OCT 1978 1717-PDT
From: FIALA
Subject: <D1>D1MidasRun.dm;6 is released
To:   Dorado Users Group:

Fixes bugs on symbolic instruction type-in and hexadecimal io for
baseboard stuff.
-------
*start*
00224 00024 US 
Date: 24 OCT 1978 1355-PDT
From: DEUTSCH
Subject: Release of MicroD 7.5
To:   Micro-Micro(D) Users:

This release fixes a bug which garbled the JCN field for Dorado Model 1.
No other changes.
-------
*start*
01180 00024 US 
Date: 24 Oct 1978 3:23 pm (Tuesday)
From: Pier
Subject: Model 0 environmental upgrade
To: DoradoCore^
cc: Horn, Deutsch, Yeary, Maleson

We now have the terminal hardware multiplexers and cables to allow us to share
terminals among Altos and Dorados. I have asked Mike Overton to install the
appropriate hardware to give us two sets of Dorado/Alto terminals. One set lives
inside the Model 0 room, and looks just like the current set of terminals. The
other is on a table where Viola's terminal is currently. Viola's printer will be
moved to near the center of the graphics lab and its Alto/Trident will be moved
to the north wall (currently unused). I would like to erect a partition between
the Viola area and the new Dorado programmers area.

I think it is important that we do this now, in order to test out the feasibility of
the multiplexer idea for the future and in order to make programming more
reasonable and pleasant (not perfect, but better than the currently terrible noisy
environment). If programmers prefer to work in the lab, this arrangement allows
them to do so. 

Unless objections are promptly forthcoming, we will plunge ahead.

Ken
*start*
00314 00024 US 
Date: 30 OCT 1978 0815-PST
From: PIER
Subject: Proposed new Dorado clock scheme
To:   Dorado Core Group:


Error correction: the gate at the bottom of BoardClocks.sil which
generates IgnoreProcessorClocks should be an MC210 type
non inverting gate. An inverting gate is shown.

Ken
-------
*start*
00386 00024 US 
Date: 30 Oct 1978 2:51 pm (Monday)
From: pier
Subject: Proposed new Dorado clock scheme
To: DoradoCore^

Error correction: the edge pin for MemClkEn' for boards I C X D shown on
CharClocks.sil should be 12, rather than 8.

Clarification: boards I C X D will receive MemSH on pin 5.
All IO boards will receive MemSH'.

Keep those cards and letters coming.

Ken


*start*
00165 00024 US 
Date:  1 NOV 1978 0933-PST
From: FIALA
Subject: <D1Source>D1Lang-model1.mc;12
To:   Dorado Users Group:

Is released.  Fixes 3 bugs.
-------
*start*
00387 00024 US 
Date: 3 Nov 1978 2:20 pm (Friday)
From: Pier
Subject: New  Dorado clock scheme
To: DoradoCore^

Doug Clark has pointed out that we should standardize the edge chip locations
wherever possible. Consequently, the SE231 should place at location l2 and the
SE210 receiving CLK' at location l1. We are simply following the existing Proc
boards in this selection.

Ken
*start*
00214 00024 US 
Date:  4 NOV 1978 2041-PST
From: FIALA
Subject: <D1>D1midasrun-model0.dm;80
To:   Dorado Users Group:

is released.  Fixes several bugs in the DMux simulator and in the ProcVA
test.
-------
*start*
00556 00024 US 
Date:  5 NOV 1978 1210-PST
From: DEUTSCH
Subject: MicroD 7.6
To:   Micro-Micro(D) Users:

The changes in this release only affect the Dorado model 1.  PREVIOUS MICROD
RELEASES DO NOT WORK CORRECTLY FOR THE DORADO MODEL 1.  Furthermore, a minor
hardware change is required for release 7.6 to work correctly.  DO NOT ATTEMPT
TO RUN DORADO MODEL 1 PROGRAMS OUTPUT BY MICROD UNTIL THIS CHANGE IS MADE.
This is a matter of at most a few days, according to Ken Pier.  Another
message will inform you when the change has been made.
------
*start*
00307 00024 US 
Date:  8 NOV 1978 1613-PST
From: DEUTSCH
Subject: MicroD 7.7
To:   Micro-Micro(D) Users:

This release is of interest only to Dorado users.  It fixes some bugs relating
to the IFU memory.

The hardware change to the Model 1 is now complete: MicroD and the hardware
now agree.
------
*start*
00337 00024 US 
Date: 13 NOV 1978 1516-PST
From: CHANG
Subject: ECLDict.Analyze
To:   Dorado Users Group:
cc:   Chang

Changed the number of pins for MB071 from 24 to 26 (pin #25 and #26 are GNDs').
Also, changed IC type of F181K from "E45W" to "F100K".
All changes are made in the HEADER portion of the dictionary.
	Tom
-------
*start*
00268 00024 US 
Date: 14 NOV 1978 1649-PST
From: DEUTSCH
Subject: MicroD 7.8
To:   Micro-Micro(D) Users:

Now released.  Fixes a bug on the Dorado model 1 -- fast conditional branches
were sometimes getting changed into long unconditional branches (!).
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*start*
00306 00024 US 
Date: 21 NOV 1978 1808-PST
From: FIALA
Subject: Midas release
To:   Dorado Users Group:

A new release of the Dorado model1 Midas is available on Maxc <d1>.
This release fixes several IFU bugs and has prettyprinting changes
for some muffler signals that have been modified.
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*start*
00410 00024 US 
Date: 22 NOV 1978 1537-PST
From: PIER
Subject: Buildbackuptemplate
To:   Dorado Core Group:

The latest Maxc<sil>DoradoBuildBackuptemplate.cm illustrates use of several
new features, including the loading chart file BOARDNAME01.lc now
issued by ROUTE and the generation and storage of prescan files along
with press files. Please update your backuptemplates appropriately.

Ken
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*start*
00358 00024 US 
Date: 27 NOV 1978 1827-PST
From: FIALA
Subject: Midas Release
To:   Dorado Users Group:

A new release of Dorado model1 Midas is available on Maxc1 <D1>.
This release has almost all the changes needed to support MemC, MemD,
and MemX and incorporates all decoding changes that I am aware of.
Several other bugs are also fixed.
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*start*
00311 00024 US 
Date:  5 DEC 1978 1336-PST
From: DEUTSCH
Subject: New Micro
To:   Micro-Micro(D) Users:

Fixes a bug which caused infinite looping or other strange behavior at the
end of assembly when storage was nearly full.  No other intended changes.
On [Maxc1]<Alto> and [Iris]<d0> as usual.
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*start*
01335 00024 US 
Date: 16 DEC 1978 1244-PST
From: MCDANIEL
Subject:  you'll love it
To:   Dorado Core Group:

Date: 15 DEC 1978 1952-PST
From: STROLLO
Subject: A Dorado Smalltalk experience
To:   Smalltalk Users Group:
cc:   goldstein

I had the opportunity tonight to try out Dorado Smalltalk on my Smalltalk
Calendar system. It is impressively speedy. A loop which I have timed
pretty carefully on my Alto at 15 seconds takes a shade over 3 seconds on
Dorado. This is more impressive when you consider I am using XM Smalltalk
on my Alto and had to use the 64K AI/AII (latest WFS release) version on Dorado
whose emulator does not yet support XM Altos. On other things which I
have timed the speed up factors range between 2 and 5. To those not
familiar with the way Smalltalk is being emulated on Dorado, realize that
the Alto and the Nova code and all that are being emulated. The raw
Dorado horsepwer is of course much more than the trivial factors quoted above.
Most important it
feels acceptably fast, and, since the average number I am getting out of
people for Smalltalk on NoteTaker is in the 2 to 5X Alto Smalltalk range,
Smalltalk Calendar will be a useable tool on the NoteTaker.

I left the file Calendar.Boot on the simulated 44 disk of the Dorado in
case anyone would like to play with it.
   Ted
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*start*
00327 00024 US 
Date: 16 DEC 1978 1330-PST
From: MCDANIEL
Subject: don't acquire a new midas for model1
To:   Dorado Core Group:

[maxc]<d1>d1midasrun-model1.dm;17 written on 11 dec 78 will not
initialize -- it goes into swat. Keep your current version of midas
until Ed gets a channce to fix the problem.
Gene
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*start*
00664 00024 US 
Date: 18 DEC 1978 0859-PST
From: MCDANIEL
Subject: testmodel0.midas
To:   Dorado Users Group:

I've updated the midas.run on the model 0 debugging disk to a new version
so it can run the command file, "testModel0". This command file sequences
the machine through the microdiagnostics that are currently available. 
Unfortunately, any error that gets detected will cause the command file to
halt.

TestModel0.midas is available on the model 0 debugging disk. This file causes
the diagnostics to execute in an infinite loop. It may be useful if you suspect
a hardware problem. Try ruknning it when you are done with the machine.
Gene
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*start*
01547 00024 US 
Date: 19 Dec 1978 2:33 pm (Tuesday)
From: Taft
Subject: Model 1 instruction placement
To: D1Users^

This message is to warn you of a problem in Dorado model 1 instruction
placement which you may encounter while converting model 0 microcode to run
on model 1.  I hope this warning will save you some time.

In the hardware, there are potentially 14 pairs of targets for JCN-encoded
conditional branches in each page.  However, MicroD is presently able to make
use of only 7 of them.  Furthermore, if you have a CALL at the true target of a
JCN-encoded conditional branch, the .+1 constraint on the next instruction may
make another conditional branch target pair unusable.

Unfortunately, the changes required to fix this are not trivial.  This may
eventually be fixed when the dispatch table mechanism is implemented, but
there are no immediate plans to do that.

In the meantime, you may have to leave FF free in more instructions than you
did in model 0.  The symptom of having too many JCN-branch targets in one
page is that MicroD gives the error message "ran out of pages attempting to
assign ring:" followed by a bunch of instruction addresses.  Among those
addresses will be all the targets of JCN-encoded conditional branches that have to
be on the same page.  Note that if you leave FF free in an instruction
containing a conditional branch, the branch will be encoded in FF rather than
JCN, so it won't consume a JCN-branch target pair.

My thanks to Peter for figuring this all out and explaining it to me.
	Ed

*start*
00250 00024 US 
Date: 22 DEC 1978 1902-PST
From: FIALA
Subject: Model 1 Midas Release
To:   Dorado Users Group:

New Model 1 Midas is released.  Fixes Map read-write problem and
several other bugs.  Prettyprint of errors is enhanced.
-------
*start*
00626 00024 US 
Date: 26 DEC 1978 1236-PST
From: MCDANIEL
Subject: new mema for model 1
To:   Dorado Core Group:

[ivy]<dorado>mema.dm contains a new version of the memory diagnostics.
There are two main changes:
	1) The cache patterns now include a left cycled zero bit.
	2) The xBoard tests include a map addressing test.

To simplify remembering how to acquire versions of mema, I've left
two new command files on the model1 debugging disk. "NewDoradoMema.cm" will
automatically load mema from [ivy]<dorado>mema.dm and 
"NewMcDMemA.cm" will automatically load mema from [ivy]<mcdaniel>dorado>mema.dm.

Gene
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*start*
00550 00024 US 
Date: 29 DEC 1978 1234-PST
From: DEUTSCH
Subject: Release of MicroD 7.9
To:   Micro-Micro(D) Users:

Another change in the placement algorithm.  If you have a Dorado microprogram that
fills more than 7/8 of IM, you should run it through the new MicroD to make sure
it will still place.

There is a new global and local switch /A, which lists only the locations of
instructions which are absolutely placed (i.e. with an AT[...] clause).
/A, /C, /L (local), and /N are mutually exclusive; local switches override global.
------