-- FILE: <JPROG>PrivateRamDefs.mesa Last Edited by Mitchell, September 9, 1977 12:22 PM

PrivateRamDefs: DEFINITIONS =

BEGIN -- module body

Version: CARDINAL = 0;

-- C O M P I L E - T I M E C O N S T A N T S A N D T Y P E S

BootLocusVector: TYPE = RECORD[CARDINAL];

PackedMuFile: TYPE = MACHINE DEPENDENT RECORD

[

brJunk: ARRAY [0..21B) OF UNSPECIFIED,-- header stuff in .br file prepared by Packmu.Run

blv: BootLocusVector,-- put there by Packmu.Run

constVector: ARRAY [1..maxConstAddr] OF CARDINAL,-- const 0 is always zero

ramVector: ARRAY [0..maxRamAddr] OF MicroCode

];

MicroAddress: TYPE = [0..7777B];

-- Bus Source (bs) field values when not used as part of a Const address

ReadR: CARDINAL = 0;

RGets: CARDINAL = 1;

MinusOne: CARDINAL = 2;

ReadS: CARDINAL = 3;-- RAM related

SGets: CARDINAL = 4;-- RAM related

ReadMD: CARDINAL = 5;

ReadMouse: CARDINAL = 6;

ReadDisplacement: CARDINAL = 7;

MicroCode: TYPE = MACHINE DEPENDENT RECORD -- for RAM-related tasks

[ -- the best definition of these fields is in Alto manual, pp. 5-7, p. 53

r: [0..37B],-- R register select

aluF: {Bus, T, BusOrT, BusAndT, BusXorT, BusPlus1, BusMinus1, BusPlusT, BusMinusT, BusMinusTMinus1, BusPlusTPlus1, BusPlusSkip, BusDotT, BusAndNotT, undefAlu1, undefAlu2},

bs: [0..7B],-- a bus source constant or low 3 bits of const address

f1: {SwMode, WrtRam, RdRam, RmrGets, taskSpec4, taskSpec5, taskSpec6, taskSpec7, Noop, MarGets, Task, Block, Llsh1, Lrsh1, Llcy8, ReadConst},

f2: {taskSpec0, taskSpec1, taskSpec2, taskSpec3, taskSpec4, taskSpec5, taskSpec6, taskSpec7, Noop, BusEq0, ShLt0, ShEq0, Bus, AluCy, MdGets, ReadConst},

loadT: {no, yes},

loadLM: {yes, no},-- inverted bit

next: [0..1777B]-- next MicroInstruction Address

];

EmSTART: CARDINAL = 20B;-- microaddress of Alto emulator main loop

maxConstAddr: MicroAddress = 377B;

maxRamAddr: MicroAddress = 1777B;

RamImage: TYPE = DESCRIPTOR FOR ARRAY OF MicroCode;

ConstantImage: TYPE = DESCRIPTOR FOR ARRAY [1..maxConstAddr] OF CARDINAL;

END. --PrivateRamDefs

Edit Log

Remark: Sturgis: 5-Jun-79 18:23:51: any comments earlier than October 1, 1978 placed in the Juniper History Log.