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Finished the PDP-10 Move Magnitude opcodes, along with the Push Down and Pop Up opcodes (uncovering some SIMH weirdness along the way)

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Jeff 2017-03-02 16:38:00 -08:00 • committed by Jeff Parsons
commit affaa1075c
8 changed files with 398 additions and 224 deletions
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13
modules/pdp10/lib/debugger.js
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@ -885,6 +885,9 @@ class DebuggerPDP10 extends Debugger {
case DebuggerPDP10.REGS.ND:
value = this.cpu.fNoDivide? 1 : 0;
break;
case DebuggerPDP10.REGS.PD:
value = this.cpu.fPDOverflow? 1 : 0;
break;
}
return value;
}
@ -3145,15 +3148,16 @@ class DebuggerPDP10 extends Debugger {
*/
doStep(sCmd, sOption)
{
if (sOption == '?') {
var fCallStep = true;
var nRegs = (sCmd == "p"? 0 : (sCmd == "pr"? 1 : -1));
if (sOption == '?' || nRegs < 0) {
this.println("step commands:");
this.println("\tp\tstep over instruction");
this.println("\tpr\tstep over instruction with register update");
return;
}
var fCallStep = true;
var nRegs = (sCmd == "pr"? 1 : 0);
/*
* Set up the value for this.nStep (ie, 1 or 2) depending on whether the user wants
* a subsequent register dump ("pr") or not ("p").
@ -3819,10 +3823,11 @@ if (DEBUGGER) {
C1: 4, // single-bit "register" representing the Carry 1 flag
OV: 5, // single-bit "register" representing the Overflow flag
ND: 6, // single-bit "register" representing the No Divide flag
PD: 7, // single-bit "register" representing the Pushdown Overflow flag
};
DebuggerPDP10.REGNAMES = [
"PC", "RA", "EA", "C0", "C1", "OV", "ND"
"PC", "RA", "EA", "C0", "C1", "OV", "ND", "PD"
];
/*