Date: February 13, 1983  1:34 PM
From: Larry Clark, Lynne McCreight, and Frank Vest
Subject: Dorado Board Revision Status
To: DoradoCore^.pa
Reply-To: Clark

Filed on:	[Indigo]<DoradoDocs>RevStatus.press
	[Indigo]<DoradoLogic>RevStatus.bravo

This is a list of the revision levels for the Dorado logic drawings.
Boards should be marked to reflect the current reworked board revision level.
The documentation will be updated soon.  Corrections and updates requested.

BOARD		REV		CHANGES

BaseBoard	swAk		Unknown
		swAl		Watchdog timer fix
		swAm		Fix timer error; Current
		pc Bb		Unknown
		pc Bc		Watchdog timer
		pc Bd		Fix timer error
		pc Be		Unknown
		pc Bf		Unknown
		pc Bg		Resistors changed from 5% to 1%; Current 

				Notes:	1. Last pc logic drawing rev is Be.
					2. Pull-up resistors have been added
					to the 3140 Op Amps on the board but
					the documentation has not been changed.

ContB		swCd		Current
		mwCd		Current
		apcDa		Current

ContA		swCd		Current
		mwCd		Current
		apcDa		Current

ProcL		swCi		Null
		mwCf		Unknown
		mwCg		Null
		mwCh		Fix to "Hold" signal. Current
		mwCi		Terminator resistors added to selected mw boards
				Rev Ci withdrawn for production boards
		apcDa		mw to apc
		apcDb		Correct artwork errors; Current

				Note:	Last apc logic drawing rev is Da.

ProcH		mwCd		Unknown
		mwCe		Null
		mwCe		Current
		apcDa		mw to apc
		apcDb		Correct artwork errors; Current

				Note:	Last apc logic drawing rev is Da.

IFU		swCh		Current
		mwCe		Unknown
		mwCf		Multiwire layout change
		mwCg		Fix interupts after XFER
		mwCh		Current
		apcDa		mw to apc
		apcDb		Correct artwork errors; Current

				Note:	Last apc logic drawing rev is Da.

MemC		swBe		Null; Current
		mwBd		Unknown
		mwBe		Null; Current
		apcBe		mw to apc; Current (Used for Resource boards only.)
		apcDa		Null; Current

				Note:	Last apc logic drawing rev is Be.

MemX		Cc		Old rev; Not reworkable
		swCg		Unknown
		swCh		Current
		mwCg		Unknown
		mwCh		Current
		apcDa		mw to apc
		apcDb		Correct artwork errors; Current

				Notes:	1. Last apc logic drawing rev is Da.
					2. Socket with .01 uF caps added
					to 64K map chip locations but
					the documentation has not been changed.
					3. On MemX23.sil the 22 uF cap locations
					at b13 and c11 need correction but
					the documentation has not been changed.

MemD		swBe		Current; 1k cache chips
		swCa		Current; 4k cache chips
		mwBe		Current; 1k cache chips
		mwCa		Current; 4k cache chips
		apcDa		mw to apc; 1k cache chips; Current

MSA		swBg		Current
		pcPa		Current: also known as "PCMSA"

				Note: Chip j2 pinout is wrong and
				clock at  c1.9 is missing on logic drawings.

DskEth		swBd		2 boards in service; cannot be reworked
		swCe		Null
		swCf		Current
		mwCe		Null
		mwCf		Current
		apcDa		mw to apc
		apcDb		Power off disk protect; Current

				Notes:	1. Plats added at a18, f03, and f06 but
					the documentation has not been changed.

DispY		swCh		Fix DispM color problems
		swCi		Unknown
		swCj		LF Display mod.
		swCk		Trial 1000 line display enhancement
		mwCh		Fix DispM color problems 
		mwCi		Unknown
		mwCj		LF Display mod
		mwCk		1000 line display enhancement; not used
		apcDa		mw to apc; created from Cj
		apcDb		Correct artwork errors; Current

				Notes:	1. Chip in a02 not required but
					the documentation has not been changed.

DispM		swCg		Unknown 
		swCh		add prog PhaseRef and NTSC crystal option; 1 exists 
		mwCg		Current; not upgraded to Ch
		mwCh		add prog PhaseRef and NTSC crystal option; 1 exists
		apcDa		mw to apc; Current

				Notes:	1. apc does not yet exist.


Special Board:

Music		swAc		Current