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39 lines
7.6 KiB
Plaintext
39 lines
7.6 KiB
Plaintext
head 1.1;
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branch 1.1.1;
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access ;
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symbols start:1.1.1.1 Xerox:1.1.1;
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locks ; strict;
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comment @# @;
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1.1
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date 2001.08.12.22.22.29; author freier; state Exp;
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branches 1.1.1.1;
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next ;
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1.1.1.1
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date 2001.08.12.22.22.29; author freier; state Exp;
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branches ;
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next ;
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desc
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@@
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1.1
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log
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@Initial revision
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@
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text
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@{
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File name write.mc
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Description: Mesa Write op-codes
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Author: don DXC
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Created: February 16, 1980
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AEF 21-Jul-83 11:02:18 Fix stack problem during page fault on second word of double writes
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AXD 15-Jun-83 18:39:26 New Instruction Set
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JGS November 2, 1981 4:11 PM New Instruction Set
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Last edited: DXC , March 28, 1980 5:09 PM
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Last edited: R. RXG , April 2, 1980 10:34 PM
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Last edited: RXJ , January 14, 1981 11:04 AM
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Last edited: DEG , 1-Sep-84 19:56:21 add copyright notice.
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}
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{ Copyright (C) 1980, 1981, 1983 by Xerox Corporation. All rights reserved.}
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{
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Wn Write n = 0
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WB Write Byte
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WLB Write Long Byte
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WDB Write Double Byte
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WDLB Write Double Long Byte
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PSB Put Swapped Byte
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PSDn Put Swapped Double n = 0
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PSDB Put Swapped Double Byte
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PSLB Put Swapped Long Byte
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PSDLB Put Swapped Double Long Byte
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WLIP Write Local Indirect Pair
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WLILP Write Local Indirect Long Pair
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WLDILP Write Local Double Indirect Long Pair
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WOB Write Overhead Byte
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}
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{*****************************************************************************
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WB
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*****************************************************************************}
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@@W0: TT ¬ TOS, push, L1¬L1.PushDec, c1, opcode[111'b];
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STK ¬ TOS, pop, PC ¬ PC + PC16, GOTO[Wa], c2;
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@@WB: TT ¬ TOS + ib, push, L1¬L1.PushDec2, c1, opcode[112'b];
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STK ¬ TOS, pop, PC ¬ PC + 1, c2;
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Wa: Noop, c3;
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WMpc1: Map ¬ Q ¬ [rhMDS, TT], c1;
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WMpc2: T ¬ STK, pop, c2;
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WMpc3: Rx ¬ rhRx ¬ MD, XDirtyDisp, c3;
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W: MAR ¬ [rhRx, Q + 0], L0¬L0.W, BRANCH[WMUD,$,1], c1, WMFRet[L0.W];
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Wb: MDR ¬ T, IBDisp, GOTO[SLa], c2;
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WMUD: CALL[WMapFix], c2;
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{*****************************************************************************
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PSB
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*****************************************************************************}
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@@PSB: TT ¬ STK{ptr}, fXpop, fZpop, push, c1, opcode[113'b];
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TT ¬ TT + ib, push, L1¬L1.Dec2, c2;
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STK ¬ TOS, PC ¬ PC + 1, GOTO[WMpc1], c3;
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{*****************************************************************************
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WLB
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*****************************************************************************}
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@@WLB: TT ¬ STK{ptrL}, pop, L1¬L1.Push, c1, opcode[114'b];
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TT ¬ TT + ib, CarryBr, L2¬L2.WL, c2;
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rhTT ¬ TOS{ptrH} LRot0, BRANCH[WLMpc1, WLa], c3;
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WLa: CALL[VAHiInc], c1;
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WLMpc1: Map ¬ Q ¬ [rhTT, TT], c1, VAHiRet[L2.WL];
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WLMpc2: T ¬ STK, c2;
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WLMpc3: Rx ¬ rhRx ¬ MD, XDirtyDisp, c3;
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WL: MAR ¬ [rhRx, Q + 0], L0¬L0.WL, BRANCH[WLMUD,$,1], c1, WLMFRet[L0.WL];
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WLc: MDR ¬ T{data}, IBDisp, PC ¬ PC + 1, pop, GOTO[SLa], c2;
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WLMUD: CALL[WLMapFix], c2;
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{*****************************************************************************
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PSLB
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*****************************************************************************}
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@@PSLB: rhTT ¬ STK, pop, c1, opcode[115'b];
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TT ¬ STK, fXpop, fZpop, push, c2;
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TT ¬ TT + ib, CarryBr, push, c3;
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PSLc: Map ¬ Q ¬ [rhTT, TT], push, BRANCH[PSLa, PSLb], c1;
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PSLa: STK ¬ T ¬ TOS, L1¬L1.Pop, GOTO[WLMpc3], c2;
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PSLb: Q ¬ rhTT + 1, pop, LOOPHOLE[byteTiming], c2;
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rhTT ¬ Q LRot0, GOTO[PSLc], c3;
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{*****************************************************************************
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WDB
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*****************************************************************************}
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@@WDB: Q ¬ TOS + ib, L1¬L1.Push2, c1, opcode[116'b];
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T ¬ STK{data1}, pop, c2;
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WDd: c3;
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WDMpc1: Map ¬ [rhMDS, Q], c1;
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WDMpc2: TT ¬ STK{data0}, pop, c2;
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WDMpc3: Rx ¬ rhRx ¬ MD, XDirtyDisp, c3;
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WDa: MAR ¬ [rhRx,Q + 0], L0¬L0.WD, BRANCH[WDMUD,$,1], c1, WMFRet[L0.WD];
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WDc: MDR ¬ TT, TT ¬ Q + 1, PgCarryBr, c2;
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rhTT ¬ UvMDS, push, BRANCH[WDLd, WDb], c3;
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WDb: Map ¬ Q ¬ [rhTT, Q + 1], L0¬L0.WDB, c1;
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WDe: Noop, c2;
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Rx ¬ rhRx ¬ MD, XDirtyDisp, c3;
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MAR ¬ [rhRx, Q + 0], BRANCH[WLMUD,WLc,1], c1, WLMFRet[L0.WDB];
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WDMUD: CALL[WMapFix], c2;
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{*****************************************************************************
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PSD0 and PSDB
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*****************************************************************************}
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@@PSD0: Q ¬ 0, pop, L1¬L1.PushInc, c1, opcode[117'b];
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T ¬ STK, fXpop, fZpop, push, c2;
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PC ¬ PC - PC16, push, GOTO[PSDa], c3;
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@@PSDB: Q ¬ ib, pop, c1, opcode[120'b];
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T ¬ STK, fXpop, fZpop, push, c2;
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L1¬L1.Push, push, c3;
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PSDa: Q ¬ T + Q, push, c1;
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STK ¬ T ¬ TOS, pop, GOTO[WDd], c2;
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{*****************************************************************************
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WDLB
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*****************************************************************************}
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@@WDLB: TT ¬ STK{ptrL}, pop, L1¬L1.Push2, c1, opcode[121'b];
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TT ¬ TT + ib, CarryBr, L2¬L2.WDL, c2;
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rhTT ¬ TOS{ptrH} LRot0, BRANCH[WDLMc1, WDLa], c3;
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WDLa: CALL[VAHiInc], c1;
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WDLMc1: Map ¬ Q ¬ [rhTT,TT], c1, VAHiRet[L2.WDL];
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WDLMc2: T ¬ STK{data1}, pop, L0¬L0.WDL, c2;
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WDLMc3: Rx ¬ rhRx ¬ MD, XDirtyDisp, c3;
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MAR ¬ [rhRx,Q + 0], BRANCH[WDLMUD,$,1], c1, WLMFRet[L0.WDL];
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MDR ¬ STK{data0}, c2;
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[] ¬ TT + 1, PgCarryBr, c3;
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WDLd: MAR ¬ [rhRx,Q + 1], BRANCH[WDLb, WDLc], c1;
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WDLb: MDR ¬ T{data1}, PC ¬ PC + 1, IBDisp, pop, CANCELBR[SLa,0], c2;
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WDLc: [] ¬ Q + 1, CarryBr, CANCELBR[$,2], c2;
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Q ¬ rhTT + 1, LOOPHOLE[byteTiming], BRANCH[WDLe, WDLf], c3;
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WDLe: Map ¬ Q ¬ [rhTT, TT + 1], GOTO[WDe], c1;
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WDLf: rhTT ¬ Q LRot0, GOTO[WDLc], c1;
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WDLMUD: CALL[WLMapFix], c2;
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{*****************************************************************************
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PSDLB
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*****************************************************************************}
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@@PSDLB: pop, L1¬L1.None, c1, opcode[122'b];
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rhTT ¬ STK, pop, c2;
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TT ¬ STK, fXpop, fZpop, push, c3;
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PSDLd: TT ¬ TT + ib, CarryBr, push, c1;
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Q ¬ rhTT + 1, push, LOOPHOLE[byteTiming], BRANCH[PSDLa, PSDLb], c2;
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PSDLa: GOTO[PSDLc], c3;
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PSDLb: rhTT ¬ Q LRot0, GOTO[PSDLc], c3;
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PSDLc: Map ¬ Q ¬ [rhTT, TT], push, c1;
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STK ¬ T ¬ TOS, pop, L0¬L0.WDL, GOTO[WDLMc3], c2;
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{*****************************************************************************
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WLIP
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*****************************************************************************}
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@@WLIP: MAR ¬ Q ¬ [rhL, L+alpha.left], L0¬L0.WLIP, push, c1, opcode[136'b];
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STK ¬ TOS, PC ¬ PC + 1, L2¬L2.LIP, BRANCH[LIPa,LIPb,1], c2;
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Map ¬ Q ¬ [rhMDS, TT], L1¬L1.Dec2, GOTO[WMpc2], c1, IPRet[L0.WLIP];
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{*****************************************************************************
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WLILP
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*****************************************************************************}
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@@WLILP: MAR ¬ Q ¬ [rhL, L+alpha.left], L0¬L0.WLILP, push, c1, opcode[137'b];
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STK ¬ TOS, PC ¬ PC + 1, L2¬L2.LILP0, BRANCH[LILPa,LILPb,1], c2;
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PC ¬ PC - 1, L1¬L1.Pop, c3, ILPRet[L0.WLILP];
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Map ¬ Q ¬ [rhTT, TT], GOTO[WLMpc2], c1;
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{*****************************************************************************
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WLDILP
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*****************************************************************************}
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@@WLDILP:
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MAR ¬ Q ¬ [rhL, L+alpha.left], L0¬L0.WLDILP, push, c1, opcode[140'b];
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STK ¬ TOS, PC ¬ PC + 1, L2¬L2.LILP0, BRANCH[LILPa,LILPb,1], c2;
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PC ¬ PC - 1, L1¬L1.None, GOTO[WDLMc1], c3, ILPRet[L0.WLDILP];
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{*****************************************************************************
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WOB Write Overhead Byte
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*****************************************************************************}
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@@WOB: TT ¬ TOS - ib, L1¬L1.PushDec3, c1, at[0F,10,ESC1n];
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PC ¬ PC + PC16, GOTO[Wa], c2;
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{ E N D }
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@
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1.1.1.1
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log
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@first add
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@
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text
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@@
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