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First cut at PDP-10 byte instructions

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Jeff 2017-03-02 23:10:24 -08:00 • committed by Jeff Parsons
commit 25aa95cec8
7 changed files with 396 additions and 276 deletions
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12
modules/pdp10/lib/debugger.js
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@ -1415,7 +1415,7 @@ class DebuggerPDP10 extends Debugger {
findInstruction(opCode, fOperands = true)
{
var opNum, opMask, aModes, iMode = 0;
var op = (opCode / PDP10.OPCODE.OPSHIFT)|0;
var op = (opCode / PDP10.OPCODE.OP_SCALE)|0;
for (var mask in DebuggerPDP10.OPTABLE) {
var opMasks = DebuggerPDP10.OPTABLE[mask];
@ -1423,7 +1423,7 @@ class DebuggerPDP10 extends Debugger {
if (opNum) {
opMask = +mask;
/*
* When we extracted op from opCode using OPSHIFT, we included 6 additional bits
* When we extracted op from opCode using OP_SCALE, we included 6 additional bits
* to help distinguish OPIO instructions from non-OPIO instructions. But for the
* following tests, we don't need those bits, so we get rid of them now.
*/
@ -1458,7 +1458,7 @@ class DebuggerPDP10 extends Debugger {
sOperation += this.toStrWord(opCode);
} else {
if (opMask == PDP10.OPCODE.OPIO) {
sOperation += this.toStrBase((opCode / PDP10.OPCODE.IOSHIFT) & PDP10.OPCODE.IOMASK, -1);
sOperation += this.toStrBase((opCode / PDP10.OPCODE.IO_SCALE) & PDP10.OPCODE.IO_MASK, -1);
} else {
sOperation += this.toStrBase((opCode >> PDP10.OPCODE.A_SHIFT) & PDP10.OPCODE.A_MASK, -1);
}
@ -1564,7 +1564,7 @@ class DebuggerPDP10 extends Debugger {
} else {
opMode = ((iMode & 0o3) << 1) | ((iMode & 0o14) << 2);
}
opCode = (op | (opMode << 6)) * PDP10.OPCODE.OPSHIFT;
opCode = (op | (opMode << 6)) * PDP10.OPCODE.OP_SCALE;
break;
}
}
@ -1601,12 +1601,12 @@ class DebuggerPDP10 extends Debugger {
}
if (!i && aOperands.length > 1) {
if (opMask == PDP10.OPCODE.OPIO) {
if (operand < 0 || operand > PDP10.OPCODE.IOMASK) {
if (operand < 0 || operand > PDP10.OPCODE.IO_MASK) {
this.println("device code out of range: " + match[2]);
opCode = -1;
break;
}
opCode += (operand * PDP10.OPCODE.IOSHIFT);
opCode += (operand * PDP10.OPCODE.IO_SCALE);
}
else {
if (operand < 0 || operand > PDP10.OPCODE.A_MASK) {