DIRECTORY Arpa, ArpaName, IO, PBasics, RefTab, Rope, SoftHdwBasics, SunAuthUnix, SunPMap, SunPMapClient, SunRPC, SunRPCAuth, UserCredentials;

SoftHdwBasicsImpl: CEDAR PROGRAM
IMPORTS ArpaName, IO, PBasics, RefTab, Rope, SunAuthUnix, SunPMapClient, SunRPC, SunRPCAuth, UserCredentials
EXPORTS SoftHdwBasics
= BEGIN OPEN SoftHdwBasics;

timeout: CARD = 2000;
retry: CARD = 5;
host: Rope.ROPE _ "cmsun";
program: INT = 555002207;
version : INT = 1;

CREATEBASE: INT = 1;
INITIALIZE: INT = 2;
FETCH: INT = 3;
STORE: INT = 4;
MASTERTOSLAVE: INT = 5;
RELAX: INT = 6;
SAMPLE: INT = 7;

nodeNames: PUBLIC ARRAY NodeType OF Rope.ROPE _ ["OToP", "RUToP", "LDToP", "LToP", "PToI", "PToRU", "PToLD", "PToL", "ORUToI", "LDToLD", "OLDToI", "ORUToL", "Tristate", "RUToRU", "ORUToLD", "LDToI", "OLDToRU", "LToI", "RUToI", "Inverter", "FlipFlop", "ParallelInput", "InputEnabled", "RAMEven", "RAMOdd", "Master", "Input", "Interchip", "Long", "Output", "LeftDown", "RightUp"];

orientationNames: PUBLIC ARRAY Orientation OF Rope.ROPE _ ["Vertical", "Horizontal"];

CreateBase: PUBLIC PROC [sizes: ArrayPosition, useConnectionMachine: BOOL _ FALSE] RETURNS [array: ArrayBase] = {
array _ NEW[ArrayBaseRec];
array.sizes _ sizes;
array.useConnectionMachine _ useConnectionMachine;
IF useConnectionMachine THEN {
addr: Arpa.Address; status: ArpaName.ReplyStatus;
myName, myPassword: Rope.ROPE;
port: CARD _ 0;
[addr, status] _ ArpaName.NameToAddress[host];
IF status#ok THEN ERROR;
array.h _ SunRPC.Create[addr, PBasics.HFromCard16[SunPMap.udpPort]];
[myName, myPassword] _ UserCredentials.Get[];
array.c _ SunRPCAuth.Initiate[SunRPCAuth.nullFlavor, SunAuthUnix.FixNameForUnix[myName], myPassword];
port _ SunPMapClient.GetPort[array.h, array.c, program, version, SunPMap.ipProtocolUDP];
IF port = 0 THEN ERROR;
array.h _ SunRPC.SetRemote[array.h, addr, PBasics.HFromCard16[PBasics.LowHalf[port]]];
SunRPC.StartCall[array.h, array.c, program, version, CREATEBASE];
PutArrayPosition[array.h, sizes];
[] _ SunRPC.SendCallAndReceiveReply[array.h, timeout, retry];
array.id _ SunRPC.GetCard32[array.h];
SunRPC.ReleaseReply[array.h];
}
ELSE CreateBaseState[array];
};

Initialize: PUBLIC PROC [array: ArrayBase] = {
IF array.useConnectionMachine THEN {
SunRPC.StartCall[array.h, array.c, program, version, INITIALIZE];
SunRPC.PutCard32[array.h, array.id];
[] _ SunRPC.SendCallAndReceiveReply[array.h, timeout, retry];
[] _ SunRPC.GetCard32[array.h];  -- throw away bogus return value to make RPC work
SunRPC.ReleaseReply[array.h];
}
ELSE InitializeState[array];
};

Fetch: PUBLIC PROC [array: ArrayBase, bit: ArrayPosition, time: INT _ -1] RETURNS [value: BOOL] = {
IF array.useConnectionMachine THEN {
SunRPC.StartCall[array.h, array.c, program, version, FETCH];
SunRPC.PutCard32[array.h, array.id];
PutArrayPosition[array.h, bit];
SunRPC.PutCard32[array.h, time];
[] _ SunRPC.SendCallAndReceiveReply[array.h, timeout, retry];
value _ GetBool[array.h];
SunRPC.ReleaseReply[array.h];
}
ELSE value _ FetchState[array, bit, time];
};

Store: PUBLIC PROC [array: ArrayBase, bit: ArrayPosition, value: BOOL] = {
IF array.useConnectionMachine THEN {
SunRPC.StartCall[array.h, array.c, program, version, STORE];
SunRPC.PutCard32[array.h, array.id];
PutArrayPosition[array.h, bit];
PutBool[array.h, value];
[] _ SunRPC.SendCallAndReceiveReply[array.h, timeout, retry];
[] _ SunRPC.GetCard32[array.h];  -- throw away bogus return value to make RPC work
SunRPC.ReleaseReply[array.h];
}
ELSE StoreState[array, bit, value];
};

MasterToSlave: PUBLIC PROC [array: ArrayBase] = {
IF array.useConnectionMachine THEN {
SunRPC.StartCall[array.h, array.c, program, version, MASTERTOSLAVE];
SunRPC.PutCard32[array.h, array.id];
[] _ SunRPC.SendCallAndReceiveReply[array.h, timeout, retry];
[] _ SunRPC.GetCard32[array.h];  -- throw away bogus return value to make RPC work
SunRPC.ReleaseReply[array.h];
}
ELSE MasterToSlaveState[array];
};

Relax: PUBLIC PROC [array: ArrayBase] = {
IF array.useConnectionMachine THEN {
SunRPC.StartCall[array.h, array.c, program, version, RELAX];
SunRPC.PutCard32[array.h, array.id];
[] _ SunRPC.SendCallAndReceiveReply[array.h, timeout, retry];
[] _ SunRPC.GetCard32[array.h];  -- throw away bogus return value to make RPC work
SunRPC.ReleaseReply[array.h];
}
ELSE RelaxState[array];
};

Sample: PUBLIC PROC [array: ArrayBase] = {
IF array.useConnectionMachine THEN {
SunRPC.StartCall[array.h, array.c, program, version, SAMPLE];
SunRPC.PutCard32[array.h, array.id];
[] _ SunRPC.SendCallAndReceiveReply[array.h, timeout, retry];
[] _ SunRPC.GetCard32[array.h];  -- throw away bogus return value to make RPC work
SunRPC.ReleaseReply[array.h];
}
ELSE SampleState[array];
};

PutArrayPosition: PROC [h: SunRPC.Handle, position: ArrayPosition] = {
SunRPC.PutCard32[h, ORD[position.type]];
SunRPC.PutCard32[h, ORD[position.orientation]];
PutPosition[h, position.chip];
PutPosition[h, position.minorArray];
PutPosition[h, position.grain];
};

PutPosition: PROC [h: SunRPC.Handle, position: Position] = {
SunRPC.PutInt32[h, position.x];
SunRPC.PutInt32[h, position.y];
};

PutBool: PROC [h: SunRPC.Handle, value: BOOL] = {
SunRPC.PutInt32[h, IF value THEN 1 ELSE 0];
};

GetBool: PROC [h: SunRPC.Handle] RETURNS [value: BOOL] = {
value _ IF SunRPC.GetCard32[h]=0 THEN FALSE ELSE TRUE;
};

CreateBaseState: PROC [array: ArrayBase] = {
CreateGrain: EnumeratePositionsProc = {
positionRef: ArrayPosition _ NEW[ArrayPositionRec];
grain: Grain _ NEW[GrainRec[SELECT position.orientation FROM
Vertical => array.sizes.grain.x,
Horizontal => array.sizes.grain.y,
ENDCASE => ERROR]];
grain.vertical _ position.orientation=Vertical;
ScheduleGrain[array, grain];
positionRef^ _ position^;
grain.key _ positionRef;
IF NOT RefTab.Store[map, positionRef, grain] THEN ERROR;
};
CreateLongLine: EnumeratePositionsProc = {
positionRef: ArrayPosition _ NEW[ArrayPositionRec];
longLine: LongLine _ NEW[LongLineRec[SELECT position.orientation FROM
Vertical => array.sizes.minorArray.y,
Horizontal => array.sizes.minorArray.x,
ENDCASE => ERROR]];
positionRef^ _ position^;
longLine.key _ positionRef;
IF NOT RefTab.Store[map, positionRef, longLine] THEN ERROR;
};
CreateMinorArray: EnumeratePositionsProc = {
positionRef: ArrayPosition _ NEW[ArrayPositionRec];
minor: MinorArray _ NEW[MinorArrayRec];
minor.vertical _ NEW[GrainSeqRec[array.sizes.grain.x]];
minor.horizontal _ NEW[GrainSeqRec[array.sizes.grain.y]];
ScheduleMinorArray[array, minor];
positionRef^ _ position^;
minor.key _ positionRef;
IF NOT RefTab.Store[map, positionRef, minor] THEN ERROR;
};
FillGrainNeighbors: EnumeratePositionsProc = {
grain: Grain _ NARROW[RefTab.Fetch[map, position].val];
temp: ArrayPositionRec _ position^;
IF position.orientation=Vertical THEN {
IF position.minorArray.y=0 THEN {
position.minorArray.y _ array.sizes.minorArray.y-1;
position.chip.y _ position.chip.y-1;
}
ELSE position.minorArray.y _ position.minorArray.y-1;
}
ELSE {
IF position.minorArray.x=0 THEN {
position.minorArray.x _ array.sizes.minorArray.x-1;
position.chip.x _ position.chip.x-1;
}
ELSE position.minorArray.x _ position.minorArray.x-1;
};
grain.leftDownGrain _ NARROW[RefTab.Fetch[map, position].val];
position^ _ temp;
IF position.orientation=Vertical THEN {
IF position.minorArray.y=array.sizes.minorArray.y-1 THEN {
position.minorArray.y _ 0;
position.chip.y _ position.chip.y+1;
}
ELSE position.minorArray.y _ position.minorArray.y+1;
}
ELSE {
IF position.minorArray.x=array.sizes.minorArray.x-1 THEN {
position.minorArray.x _ 0;
position.chip.x _ position.chip.x+1;
}
ELSE position.minorArray.x _ position.minorArray.x+1;
};
grain.rightUpGrain _ NARROW[RefTab.Fetch[map, position].val];
position^ _ temp;
SELECT position.orientation FROM
Vertical => {
position.orientation _ Horizontal;
position.grain.x _ 0;
};
Horizontal => {
position.orientation _ Vertical;
position.grain.y _ 0;
};
ENDCASE => ERROR;
FOR grainIndex: INT IN [0..grain.size) DO
SELECT position.orientation FROM
Vertical => position.grain.x _ grainIndex;
Horizontal => position.grain.y _ grainIndex;
ENDCASE => ERROR;
grain.perpendicularGrains[grainIndex].inputEnabled _ FALSE;
grain.perpendicularGrains[grainIndex].grain _ NARROW[RefTab.Fetch[map, position].val];
ENDLOOP;
position^ _ temp;
position.type _ Long;
SELECT position.orientation FROM
Vertical => {
position.minorArray.y _ 0;
position.grain.y _ 0;
};
Horizontal => {
position.minorArray.x _ 0;
position.grain.x _ 0;
};
ENDCASE => ERROR;
grain.longLine _ NARROW[RefTab.Fetch[map, position].val];
IF grain.longLine=NIL THEN ERROR;
FOR index: CARDINAL IN [0..grain.longLine.size) DO
IF grain.longLine.grains[index]=NIL THEN {
grain.longLine.grains[index] _ grain;
EXIT;
};
REPEAT FINISHED => ERROR;
ENDLOOP;
position^ _ temp;
position.type _ RAMEven;
position.orientation _ Vertical;
position.grain.x _ 0;
position.grain.y _ 0;
grain.minorArray _ NARROW[RefTab.Fetch[map, position].val];
position^ _ temp;
SELECT position.orientation FROM
Vertical => grain.minorArray.vertical[position.grain.x] _ grain;
Horizontal => grain.minorArray.horizontal[position.grain.y] _ grain;
ENDCASE => ERROR;
};
position: ArrayPosition _ NEW[ArrayPositionRec];
map: RefTab.Ref _ RefTab.Create[equal: ArrayPositionEqual, hash: ArrayPositionHash];
array.state _ NEW[ArrayBaseStateRec];
array.state.positionToEntity _ map;
EnumerateGrains[array.sizes, position, CreateGrain];
EnumerateLongLines[array.sizes, position, CreateLongLine];
EnumerateMinorArrays[array.sizes, position, CreateMinorArray];
EnumerateGrains[array.sizes, position, FillGrainNeighbors];
};

EnumeratePositionsProc: TYPE = PROC [position: ArrayPosition];

EnumerateGrains: PROC [sizes: ArrayPosition, position: ArrayPosition, call: EnumeratePositionsProc] = {
position.type _ Output;
FOR chipXIndex: INT IN [0..sizes.chip.x) DO
position.chip.x _ chipXIndex;
FOR chipYIndex: INT IN [0..sizes.chip.y) DO
position.chip.y _ chipYIndex;
FOR minorXIndex: INT IN [0..sizes.minorArray.x) DO
position.minorArray.x _ minorXIndex;
FOR minorYIndex: INT IN [0..sizes.minorArray.y) DO
position.minorArray.y _ minorYIndex;
position.grain.y _ 0;
position.orientation _ Vertical;
FOR grainXIndex: INT IN [0..sizes.grain.x) DO
position.grain.x _ grainXIndex;
call[position];
ENDLOOP;
position.grain.x _ 0;
position.orientation _ Horizontal;
FOR grainYIndex: INT IN [0..sizes.grain.y) DO
position.grain.y _ grainYIndex;
call[position];
ENDLOOP;
ENDLOOP;
ENDLOOP;
ENDLOOP;
ENDLOOP;
};

EnumerateLongLines: PROC [sizes: ArrayPosition, position: ArrayPosition, call: EnumeratePositionsProc] = {
position.type _ Long;
FOR chipXIndex: INT IN [0..sizes.chip.x) DO
position.chip.x _ chipXIndex;
FOR chipYIndex: INT IN [0..sizes.chip.y) DO
position.chip.y _ chipYIndex;
position.orientation _ Vertical;
position.minorArray.y _ 0;
position.grain.y _ 0;
FOR minorXIndex: INT IN [0..sizes.minorArray.x) DO
position.minorArray.x _ minorXIndex;
FOR grainXIndex: INT IN [0..sizes.grain.x) DO
position.grain.x _ grainXIndex;
call[position];
ENDLOOP;
ENDLOOP;
position.orientation _ Horizontal;
position.minorArray.x _ 0;
position.grain.x _ 0;
FOR minorYIndex: INT IN [0..sizes.minorArray.y) DO
position.minorArray.y _ minorYIndex;
FOR grainYIndex: INT IN [0..sizes.grain.y) DO
position.grain.y _ grainYIndex;
call[position];
ENDLOOP;
ENDLOOP;
ENDLOOP;
ENDLOOP;
};

EnumerateMinorArrays: PROC [sizes: ArrayPosition, position: ArrayPosition, call: EnumeratePositionsProc] = {
position.type _ RAMEven;
position.orientation _ Vertical;
position.grain.x _ 0;
position.grain.y _ 0;
FOR chipXIndex: INT IN [0..sizes.chip.x) DO
position.chip.x _ chipXIndex;
FOR chipYIndex: INT IN [0..sizes.chip.y) DO
position.chip.y _ chipYIndex;
FOR minorXIndex: INT IN [0..sizes.minorArray.x) DO
position.minorArray.x _ minorXIndex;
FOR minorYIndex: INT IN [0..sizes.minorArray.y) DO
position.minorArray.y _ minorYIndex;
call[position];
ENDLOOP;
ENDLOOP;
ENDLOOP;
ENDLOOP;
};

ArrayPositionToRope: PUBLIC PROC [position: ArrayPosition] RETURNS [rope: Rope.ROPE] = {
rope _ IO.PutFR["%g %g", IO.rope[orientationNames[position.orientation]], IO.rope[nodeNames[position.type]]];
rope _ Rope.Cat[rope, IO.PutFR[" [%g, %g]", IO.int[position.chip.x], IO.int[position.chip.y]]];
rope _ Rope.Cat[rope, (SELECT TRUE FROM
position.type#Long => IO.PutFR[" [%g, %g]", IO.int[position.minorArray.x], IO.int[position.minorArray.y]],
position.orientation=Vertical => IO.PutFR[" [%g, -]", IO.int[position.minorArray.x]],
ENDCASE => IO.PutFR[" [-, %g]", IO.int[position.minorArray.y]])];
rope _ Rope.Cat[rope, (SELECT TRUE FROM
position.type=InputEnabled => IO.PutFR[" [%g, %g]", IO.int[position.grain.x], IO.int[position.grain.y]],
position.orientation=Vertical => IO.PutFR[" [%g, -]", IO.int[position.grain.x]],
ENDCASE => IO.PutFR[" [-, %g]", IO.int[position.grain.y]])];
};

RopeToArrayPosition: PUBLIC PROC [rope: Rope.ROPE] RETURNS [position: ArrayPosition] = {
GetPosition: PROC [firstDash, secondDash: BOOL _ FALSE] RETURNS [pos: Position _ [0, 0]] = {
token _ IO.GetCedarTokenRope[s].token;
IF NOT Rope.Equal[token, "["] THEN ERROR;
IF firstDash THEN {
token _ IO.GetCedarTokenRope[s].token;
IF NOT Rope.Equal[token, "-"] THEN ERROR;
}
ELSE pos.x _ IO.GetInt[s];
token _ IO.GetCedarTokenRope[s].token;
IF NOT Rope.Equal[token, ","] THEN ERROR;
IF secondDash THEN {
token _ IO.GetCedarTokenRope[s].token;
IF NOT Rope.Equal[token, "-"] THEN ERROR;
}
ELSE pos.y _ IO.GetInt[s];
token _ IO.GetCedarTokenRope[s].token;
IF NOT Rope.Equal[token, "]"] THEN ERROR;
};
s: IO.STREAM _ IO.RIS[rope];
token: Rope.ROPE _ IO.GetID[s];
position _ NEW[ArrayPositionRec];
FOR orientation: Orientation IN Orientation DO
IF Rope.Equal[token, orientationNames[orientation]] THEN {
position.orientation _ orientation;
EXIT;
};
REPEAT FINISHED => ERROR;
ENDLOOP;
token _ IO.GetID[s];
FOR type: NodeType IN NodeType DO
IF Rope.Equal[token, nodeNames[type]] THEN {
position.type _ type;
EXIT;
};
REPEAT FINISHED => ERROR;
ENDLOOP;
position.chip _ GetPosition[];
position.minorArray _ GetPosition[firstDash: position.type=Long AND position.orientation=Horizontal, secondDash: position.type=Long AND position.orientation=Vertical];
position.grain _ GetPosition[firstDash: position.type#InputEnabled AND position.orientation=Horizontal, secondDash: position.type#InputEnabled AND position.orientation=Vertical];
};

ArrayPositionEqual: PUBLIC RefTab.EqualProc = {
p1: ArrayPosition _ NARROW[key1];
p2: ArrayPosition _ NARROW[key2];
RETURN[p1^=p2^];
};

ArrayPositionHash: PUBLIC RefTab.HashProc = {
FoldPair: PROC [pair: Position] = {
FoldOne[pair.x];
FoldOne[pair.y];
};
FoldOne: PROC [one: INT] = {
Fold[Basics.HighHalf[one]];
Fold[Basics.LowHalf[one]];
};
Fold: PROC [sixteenBits: CARDINAL] = {
hash _ Basics.BITXOR[hash, sixteenBits];
};
p: ArrayPosition _ NARROW[key];
hash: CARDINAL _ ORD[p.type];
hash _ 2*hash + (SELECT p.orientation FROM
Vertical => 0,
Horizontal => 1,
ENDCASE => ERROR);
FoldPair[p.chip];
FoldPair[p.minorArray];
FoldPair[p.grain];
RETURN[hash];
};

InitializeState: PROC [array: ArrayBase] = {
GrainInit: RefTab.EachPairAction = {
IF ISTYPE[val, Grain] THEN {
grain: Grain _ NARROW[val];
grain.scheduled _ FALSE;
ScheduleGrain[array, grain];
grain.leftDown _ FALSE;
grain.rightUp _ FALSE;
grain.input _ FALSE;
grain.output _ FALSE;
grain.longLine.long _ FALSE;
grain.flipFlop _ FALSE;
grain.master _ FALSE;
grain.invert _ FALSE;
grain.parallelInput _ FALSE;
FOR index: CARDINAL IN [0..grain.size) DO
grain.perpendicularGrains[index].inputEnabled _ FALSE;
ENDLOOP;
};
};
array.state.scheduledGrains _ NIL;
[] _ RefTab.Pairs[array.state.positionToEntity, GrainInit];
};

FetchState: PROC [array: ArrayBase, bit: ArrayPosition, time: INT _ -1] RETURNS [value: BOOL] = {
FetchGrain: PROC RETURNS [grain: Grain] = {
temp: ArrayPositionRec _ bit^;
bit.type _ Output;
grain _ NARROW[RefTab.Fetch[array.state.positionToEntity, bit].val];
bit^ _ temp;
};
SELECT bit.type FROM
OToP, RUToP, LDToP, LToP, PToI, PToRU, PToLD, PToL, Interchip => ERROR;
ORUToI, OLDToI, LDToI, LToI, RUToI, LDToLD, ORUToLD, RUToRU, OLDToRU, ORUToL, ParallelInput, FlipFlop, Master, Inverter, Input, Output, LeftDown, RightUp => {
grain: Grain _ FetchGrain[];
value _ SELECT bit.type FROM
ORUToI => grain.ORUToI,
OLDToI => grain.OLDToI,
LDToI => grain.LDToI,
LToI => grain.LToI,
RUToI => grain.RUToI,
LDToLD => grain.LDToLD,
ORUToLD => grain.ORUToLD,
RUToRU => grain.RUToRU,
OLDToRU => grain.OLDToRU,
ORUToL => grain.ORUToL,
Tristate => grain.Tristate,
ParallelInput => grain.parallelInput,
FlipFlop => grain.flipFlop,
Master => grain.master,
Inverter => grain.invert,
Input => grain.input,
Output => grain.output,
LeftDown => grain.leftDown,
RightUp => grain.rightUp,
ENDCASE => ERROR;
};
Long => {
longLine: LongLine _ NARROW[RefTab.Fetch[array.state.positionToEntity, bit].val];
value _ longLine.long;
};
InputEnabled => {
grain: Grain;
index: CARDINAL;
SELECT bit.orientation FROM
Vertical => {
index _ bit.grain.y;
bit.grain.y _ 0;
grain _ FetchGrain[];
bit.grain.y _ index;
};
Horizontal => {
index _ bit.grain.x;
bit.grain.x _ 0;
grain _ FetchGrain[];
bit.grain.x _ index;
};
ENDCASE => ERROR;
value _ grain.perpendicularGrains[index].inputEnabled;
};
RAMEven, RAMOdd => {
minor: MinorArray;
temp: ArrayPositionRec _ bit^;
bit.type _ RAMEven;
minor _ NARROW[RefTab.Fetch[array.state.positionToEntity, bit].val];
bit^ _ temp;
value _ SELECT bit.type FROM
RAMEven => minor.RAMEven,
RAMOdd => minor.RAMOdd,
ENDCASE => ERROR;
};
ENDCASE => ERROR;
};

StoreState: PROC [array: ArrayBase, bit: ArrayPosition, value: BOOL] = {
FetchGrain: PROC RETURNS [grain: Grain] = {
temp: ArrayPositionRec _ bit^;
bit.type _ Output;
grain _ NARROW[RefTab.Fetch[array.state.positionToEntity, bit].val];
bit^ _ temp;
};
DieIfMoreThanOne: PROC [a, b, c, d, e: BOOL _ FALSE] = {
count: CARDINAL _ 0;
IF a THEN count _ count + 1;
IF b THEN count _ count + 1;
IF c THEN count _ count + 1;
IF d THEN count _ count + 1;
IF e THEN count _ count + 1;
IF count>1 THEN ERROR;
};
SELECT bit.type FROM
OToP, RUToP, LDToP, LToP, PToI, PToRU, PToLD, PToL, Interchip => ERROR;
ORUToI, OLDToI, LDToI, LToI, RUToI, LDToLD, ORUToLD, RUToRU, OLDToRU, ORUToL, ParallelInput, FlipFlop, Master, Inverter, Input, Output, LeftDown, RightUp => {
grain: Grain _ FetchGrain[];
SELECT bit.type FROM
ORUToI => grain.ORUToI _ value;
OLDToI => grain.OLDToI _ value;
LDToI => grain.LDToI _ value;
LToI => grain.LToI _ value;
RUToI => grain.RUToI _ value;
LDToLD => grain.LDToLD _ value;
ORUToLD => grain.ORUToLD _ value;
RUToRU => grain.RUToRU _ value;
OLDToRU => grain.OLDToRU _ value;
ORUToL => grain.ORUToL _ value;
Tristate => grain.Tristate _ value;
ParallelInput => grain.parallelInput _ value;
FlipFlop => grain.flipFlop _ value;
Master => grain.master _ value;
Inverter => grain.invert _ value;
Input => grain.input _ value;
Output => grain.output _ value;
LeftDown => grain.leftDown _ value;
RightUp => grain.rightUp _ value;
ENDCASE => ERROR;
DieIfMoreThanOne[grain.ORUToI, grain.OLDToI, grain.LDToI, grain.LToI, grain.RUToI];
grain.inputSelect _ SELECT TRUE FROM
grain.ORUToI => oru,
grain.OLDToI => old,
grain.LDToI => ld,
grain.LToI => l,
grain.RUToI => ru,
ENDCASE => none;
DieIfMoreThanOne[grain.ORUToL, grain.Tristate];
grain.longControl _ SELECT TRUE FROM
grain.ORUToL => on,
grain.Tristate => old,
ENDCASE => off;
DieIfMoreThanOne[grain.LDToLD, grain.ORUToLD];
grain.leftDownSelectLeftDown _ grain.LDToLD;
DieIfMoreThanOne[grain.RUToRU, grain.OLDToRU];
grain.rightUpSelectRightUp _ grain.RUToRU;
DieIfMoreThanOne[grain.flipFlop, grain.minorArray.RAMEven OR grain.minorArray.RAMOdd];
ScheduleGrain[array, grain];
ScheduleGrain[array, grain.leftDownGrain];
ScheduleGrain[array, grain.rightUpGrain];
SchedulePerpendicularGrains[array, grain];
};
Long => {
longLine: LongLine _ NARROW[RefTab.Fetch[array.state.positionToEntity, bit].val];
IF longLine.long#value THEN ScheduleLong[array, longLine, value];
};
InputEnabled => {
grain: Grain;
index: CARDINAL;
SELECT bit.orientation FROM
Vertical => {
index _ bit.grain.y;
bit.grain.y _ 0;
grain _ FetchGrain[];
bit.grain.y _ index;
};
Horizontal => {
index _ bit.grain.x;
bit.grain.x _ 0;
grain _ FetchGrain[];
bit.grain.x _ index;
};
ENDCASE => ERROR;
grain.perpendicularGrains[index].inputEnabled _ value;
ScheduleGrain[array, grain];
};
RAMEven, RAMOdd => {
minor: MinorArray;
temp: ArrayPositionRec _ bit^;
bit.type _ RAMEven;
bit.orientation _ Vertical;
minor _ NARROW[RefTab.Fetch[array.state.positionToEntity, bit].val];
bit^ _ temp;
SELECT bit.type FROM
RAMEven => minor.RAMEven _ value;
RAMOdd => minor.RAMOdd _ value;
ENDCASE => ERROR;
ScheduleMinorArray[array, minor];
FOR index: CARDINAL IN [0..4) DO
DieIfMoreThanOne[minor.vertical[index].flipFlop, minor.RAMEven OR minor.RAMOdd];
DieIfMoreThanOne[minor.horizontal[index].flipFlop, minor.RAMEven OR minor.RAMOdd];
ENDLOOP;
};
ENDCASE => ERROR;
};

MasterToSlaveState: PROC [array: ArrayBase] = {
GrainMasterToSlave: RefTab.EachPairAction = {
WITH val SELECT FROM
grain: Grain => {
IF grain.flipFlop THEN {
master: BOOL _ IF grain.invert THEN NOT grain.master ELSE grain.master;
IF master # grain.input THEN {
grain.input _ master;
ScheduleGrain[array, grain];
SchedulePerpendicularGrains[array, grain];
};
};
};
minor: MinorArray => {
we: BOOL _ SELECT TRUE FROM
minor.RAMEven => minor.horizontal[3].leftDown,
minor.RAMOdd => NOT minor.horizontal[3].leftDown,
ENDCASE => FALSE;
IF we THEN {
wa0: BOOL _ minor.horizontal[0].leftDown;
wa1: BOOL _ minor.horizontal[1].leftDown;
wa2: BOOL _ minor.horizontal[2].leftDown;
word: CARDINAL _ SELECT TRUE FROM
wa1 AND wa2 => 3,
wa1 => 2,
wa2 => 1,
ENDCASE => 0;
horizontalGrain: Grain _ minor.horizontal[word];
FOR index: CARDINAL IN [0..4) DO
grain: Grain _ minor.vertical[index];
bit: BOOL _ grain.rightUp;
IF wa0 THEN {
IF bit#grain.perpendicularGrains[word].inputEnabled THEN {
grain.perpendicularGrains[word].inputEnabled _ bit;
ScheduleMinorArray[array, minor];
};
}
ELSE {
IF bit # horizontalGrain.perpendicularGrains[ index].inputEnabled THEN {
horizontalGrain.perpendicularGrains[index].inputEnabled _ bit;
ScheduleMinorArray[array, minor];
};
};
ENDLOOP;
};
};
ENDCASE;
};
[] _ RefTab.Pairs[array.state.positionToEntity, GrainMasterToSlave];
};

RelaxState: PROC [array: ArrayBase] = {
UNTIL array.state.scheduledGrains=NIL AND array.state.scheduledMinorArrays=NIL DO
grain: Grain _ array.state.scheduledGrains;
minor: MinorArray;
IF grain#NIL THEN {
array.state.scheduledGrains _ grain.nextGrain;
grain.scheduled _ FALSE;
RelaxGrain[array, grain];
};
minor _ array.state.scheduledMinorArrays;
IF minor#NIL THEN {
array.state.scheduledMinorArrays _ minor.nextMinorArray;
minor.scheduled _ FALSE;
RelaxMinorArray[array, minor];
};
ENDLOOP;
};

RelaxGrain: PROC [array: ArrayBase, grain: Grain] = {
IF grain.rightUpGrain#NIL AND NOT (grain.vertical AND (grain.minorArray.RAMEven OR grain.minorArray.RAMOdd)) THEN {
leftDown: BOOL _ NOT (IF grain.leftDownSelectLeftDown THEN grain.rightUpGrain.leftDown ELSE grain.rightUpGrain.output);
IF leftDown#grain.leftDown THEN {
grain.leftDown _ leftDown;
ScheduleGrain[array, grain.leftDownGrain];
IF grain.minorArray.RAMEven OR grain.minorArray.RAMOdd THEN ScheduleMinorArray[array, grain.minorArray];
};
};
IF grain.leftDownGrain#NIL THEN {
rightUp: BOOL _ NOT (IF grain.rightUpSelectRightUp THEN grain.leftDownGrain.rightUp ELSE grain.leftDownGrain.output);
IF rightUp#grain.rightUp THEN {
grain.rightUp _ rightUp;
IF grain.minorArray.RAMEven OR grain.minorArray.RAMOdd THEN ScheduleMinorArray[array, grain.minorArray];
ScheduleGrain[array, grain.rightUpGrain];
};
};
{
input: BOOL _ SELECT grain.inputSelect FROM
none => IF grain.flipFlop OR grain.invert THEN ERROR ELSE grain.input,
oru => grain.output,
old => IF grain.leftDownGrain=NIL THEN FALSE ELSE grain.leftDownGrain.output,
ld => grain.leftDown,
l => grain.longLine.long,
ru => IF grain.leftDownGrain=NIL THEN FALSE ELSE grain.leftDownGrain.rightUp,
ENDCASE => ERROR;
grain.master _ input;
IF NOT grain.flipFlop THEN {
IF grain.invert THEN input _ NOT input;
IF input#grain.input THEN {
grain.input _ input;
SchedulePerpendicularGrains[array, grain];
};
};
};
{
output: BOOL _ FALSE;
FOR index: CARDINAL IN [0..grain.size) DO
IF grain.perpendicularGrains[index].inputEnabled AND NOT grain.perpendicularGrains[index].grain.input THEN {
output _ TRUE; 
EXIT;
};
ENDLOOP;
IF grain.parallelInput AND NOT grain.input THEN output _ TRUE;
IF output#grain.output THEN {
grain.output _ output;
ScheduleGrain[array, grain];
ScheduleGrain[array, grain.leftDownGrain];
ScheduleGrain[array, grain.rightUpGrain];
};
};
IF (grain.longControl=on OR (grain.longControl=old AND (IF grain.leftDownGrain=NIL THEN FALSE ELSE grain.leftDownGrain.output))) AND grain.longLine.long#grain.output THEN ScheduleLong[array, grain.longLine, grain.output];
};

RelaxMinorArray: PROC [array: ArrayBase, minor: MinorArray] = {
re: BOOL _ SELECT TRUE FROM
minor.RAMEven => minor.horizontal[3].rightUp,
minor.RAMOdd => NOT minor.horizontal[3].rightUp,
ENDCASE => FALSE;
IF re THEN {
ra0: BOOL _ minor.horizontal[0].rightUp;
ra1: BOOL _ minor.horizontal[1].rightUp;
ra2: BOOL _ minor.horizontal[2].rightUp;
word: CARDINAL _ SELECT TRUE FROM
ra1 AND ra2 => 3,
ra1 => 2,
ra2 => 1,
ENDCASE => 0;
horizontalGrain: Grain _ minor.horizontal[word];
FOR index: CARDINAL IN [0..4) DO
grain: Grain _ minor.vertical[index];
bit: BOOL _ IF ra0 THEN grain.perpendicularGrains[word].inputEnabled ELSE horizontalGrain.perpendicularGrains[index].inputEnabled;
IF bit#grain.leftDown THEN {
grain.leftDown _ bit;
ScheduleGrain[array, grain];
IF grain.leftDownGrain#NIL THEN ScheduleGrain[array, grain.leftDownGrain];
};
ENDLOOP;
};
};

SampleState: PROC [array: ArrayBase] = {
};

SchedulePerpendicularGrains: PROC [array: ArrayBase, grain: Grain] = {
FOR index: CARDINAL IN [0..grain.size) DO
ScheduleGrain[array, grain.perpendicularGrains[index].grain];
ENDLOOP;
};

ScheduleGrain: PROC [array: ArrayBase, grain: Grain] = {
IF grain#NIL AND NOT grain.scheduled THEN {
grain.scheduled _ TRUE;
grain.nextGrain _ array.state.scheduledGrains;
array.state.scheduledGrains _ grain;
};
};

ScheduleLong: PROC [array: ArrayBase, longLine: LongLine, value: BOOL] = {
longLine.long _ value;
FOR index: CARDINAL IN [0..longLine.size) DO
longGrain: Grain _ longLine.grains[index];
IF longGrain.inputSelect=l THEN ScheduleGrain[array, longGrain];
ENDLOOP;
};

ScheduleMinorArray: PROC [array: ArrayBase, minor: MinorArray] = {
IF minor#NIL AND NOT minor.scheduled THEN {
minor.scheduled _ TRUE;
minor.nextMinorArray _ array.state.scheduledMinorArrays;
array.state.scheduledMinorArrays _ minor;
};
};

END.
’SoftHdwBasicsImpl.mesa
Copyright Σ 1988 by Xerox Corporation.  All rights reserved.
Barth, June 28, 1989 3:27:01 pm PDT

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