Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Added BACKTRACK support to I/O instructions, so that ATC Disk I/O can be tracked, too

Browse source
This commit is contained in:
Jeff Parsons 2014-12-29 15:58:26 -08:00 • committed by jeffpar
commit 14a55eb1fa
6 changed files with 111 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

18
modules/pcjs/lib/x86opxx.js
View file

@ -1213,6 +1213,7 @@ var X86OpXX = {
if (nReps--) {
var b = this.bus.checkPortInputNotify(this.regDX, this.regEIP - nDelta - 1);
if (BACKTRACK) this.backTrack.btiMemLo = this.backTrack.btiIO;
this.setSOByte(this.segES, this.regDI, b);
this.regDI = (this.regDI + ((this.regPS & X86.PS.DF)? -1 : 1)) & 0xffff;
this.nStepCycles -= nCycles;
@ -1258,7 +1259,10 @@ var X86OpXX = {
}
if (nReps--) {
var addrFrom = this.regEIP - nDelta - 1;
var w = this.bus.checkPortInputNotify(this.regDX, addrFrom) | (this.bus.checkPortInputNotify(this.regDX, addrFrom) << 8);
var w = this.bus.checkPortInputNotify(this.regDX, addrFrom);
if (BACKTRACK) this.backTrack.btiMemLo = this.backTrack.btiIO;
w |= (this.bus.checkPortInputNotify(this.regDX, addrFrom) << 8);
if (BACKTRACK) this.backTrack.btiMemHi = this.backTrack.btiIO;
this.setSOWord(this.segES, this.regDI, w);
this.regDI = (this.regDI + ((this.regPS & X86.PS.DF)? -2 : 2)) & 0xffff;
this.nStepCycles -= nCycles;
@ -3014,6 +3018,7 @@ var X86OpXX = {
opINb: function() {
var port = this.getIPByte();
this.regAX = (this.regAX & ~0xff) | this.bus.checkPortInputNotify(port, this.regEIP - 2);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInP;
},
/**
@ -3023,7 +3028,10 @@ var X86OpXX = {
*/
opINw: function() {
var port = this.getIPByte();
this.regAX = this.bus.checkPortInputNotify(port, this.regEIP - 1) | (this.bus.checkPortInputNotify((port + 1) & 0xffff, this.regEIP - 2) << 8);
this.regAX = this.bus.checkPortInputNotify(port, this.regEIP - 2);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.regAX |= (this.bus.checkPortInputNotify((port + 1) & 0xffff, this.regEIP - 2) << 8);
if (BACKTRACK) this.backTrack.btiAH = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInP;
},
/**
@ -3094,6 +3102,7 @@ var X86OpXX = {
*/
opINDXb: function() {
this.regAX = (this.regAX & ~0xff) | this.bus.checkPortInputNotify(this.regDX, this.regEIP - 1);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInDX;
},
/**
@ -3102,7 +3111,10 @@ var X86OpXX = {
* op=0xED (in AX,dx)
*/
opINDXw: function() {
this.regAX = this.bus.checkPortInputNotify(this.regDX, this.regEIP - 1) | (this.bus.checkPortInputNotify((this.regDX + 1) & 0xffff, this.regEIP - 1) << 8);
this.regAX = this.bus.checkPortInputNotify(this.regDX, this.regEIP - 1);
if (BACKTRACK) this.backTrack.btiAL = this.backTrack.btiIO;
this.regAX |= (this.bus.checkPortInputNotify((this.regDX + 1) & 0xffff, this.regEIP - 1) << 8);
if (BACKTRACK) this.backTrack.btiAH = this.backTrack.btiIO;
this.nStepCycles -= this.CYCLES.nOpCyclesInDX;
},
/**