Tested a couple half-word instructions (so far, so good)

This commit is contained in:
Jeff Parsons 2017-02-27 12:25:13 -08:00 committed by Jeff Parsons
commit 17e807ecb6
8 changed files with 479 additions and 579 deletions

View file

@ -2,6 +2,42 @@
"load": 0o100,
"exec": 0o100,
"data": [
0o505040111111, // HRLI 1,111111
0o505040111111, // HRLI 1,111111
0o541040222222, // HRRI 1,222222
0o544100000001, // HLR 2,1
0o504100000001, // HRL 2,1
//
// >> dw 0 l4
// 000000: 000000 000000 111111 222222 222222 111111 000000 000000
//
// Compare to SIMH:
//
// sim> dep 100 505040111111
// sim> dep 101 541040222222
// sim> dep 102 544100000001
// sim> dep 103 504100000001
// sim> ex -m 100-103
// 100: HRLI 1,111111
// 101: HRRI 1,222222
// 102: HLR 2,1
// 103: HRL 2,1
// sim> dep pc 100
// sim> step
//
// Step expired, PC: 000101 (HRRI 1,222222)
// sim> step
//
// Step expired, PC: 000102 (HLR 2,1)
// sim> step
//
// Step expired, PC: 000103 (HRL 2,1)
// sim> step
//
// Step expired, PC: 000104 (000000000000)
// sim> ex 0-3
// 0: 000000000000
// 1: 111111222222
// 2: 222222111111
// 3: 000000000000
]
}

View file

@ -540,7 +540,7 @@ class BusPDP10 extends Component {
*
* @this {BusPDP10}
* @param {number} addr is a physical address
* @param {number} w is the word (36-bit) value to write (we truncate it to 16 bits to be safe)
* @param {number} w is the word (36-bit) value to write
*/
setWordDirect(addr, w)
{

View file

@ -2651,7 +2651,7 @@ PDP10.opSETOB = function(op)
};
/**
* opHLL(0o500000): Half Word Left to Left
* opHLL(0o5N0000): Half Word Left to Left
*
* From the DEC PDP-10 System Reference Manual (May 1968), p. 2-3:
*
@ -2668,12 +2668,12 @@ PDP10.opHLL = function(op)
var a = op & PDP10.OPCODE.A_MASK;
var src = this.readWord(this.regEA);
var dst = this.readWord(a);
dst = (dst & PDP10.WORD_MASK) + (src - (src & PDP10.WORD_MASK));
dst = PDP10.setHR(op, dst, src) + (src - (src & PDP10.WORD_MASK));
this.writeWord(a, dst);
};
/**
* opHLLI(0o501000): Half Word Left to Left, Immediate
* opHLLI(0o5N1000): Half Word Left to Left, Immediate
*
* From the DEC PDP-10 System Reference Manual (May 1968), p. 2-3:
*
@ -2692,12 +2692,12 @@ PDP10.opHLLI = function(op)
{
var a = op & PDP10.OPCODE.A_MASK;
var dst = this.readWord(a);
dst = (dst & PDP10.WORD_MASK);
dst = PDP10.setHR(op, dst, 0);
this.writeWord(a, dst);
};
/**
* opHLLM(0o502000): Half Word Left to Left, Memory
* opHLLM(0o5N2000): Half Word Left to Left, Memory
*
* From the DEC PDP-10 System Reference Manual (May 1968), p. 2-3:
*
@ -2714,12 +2714,12 @@ PDP10.opHLLM = function(op)
var a = op & PDP10.OPCODE.A_MASK;
var src = this.readWord(a);
var dst = this.readWord(this.regEA);
dst = (dst & PDP10.WORD_MASK) + (src - (src & PDP10.WORD_MASK));
dst = PDP10.setHR(op, dst, src) + (src - (src & PDP10.WORD_MASK));
this.writeWord(this.regEA, dst);
};
/**
* opHLLS(0o503000): Half Word Left to Left, Self
* opHLLS(0o5N3000): Half Word Left to Left, Self
*
* From the DEC PDP-10 System Reference Manual (May 1968), p. 2-3:
*
@ -2735,7 +2735,13 @@ PDP10.opHLLM = function(op)
*/
PDP10.opHLLS = function(op)
{
if (op & PDP10.OPCODE.A_MASK) PDP10.opHLL.call(this, op);
var dst = this.readWord(this.regEA);
this.writeWord(this.regEA, PDP10.setHR(op, dst, dst));
var a = op & PDP10.OPCODE.A_MASK;
if (a) {
dst = this.readWord(a);
this.writeWord(a, PDP10.setHR(op, dst, dst));
}
};
/**
@ -2831,50 +2837,6 @@ PDP10.opHRLS = function(op)
}
};
/**
* opHLLZ(0o510000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLZ = function(op)
{
this.opUndefined(op);
};
/**
* opHLLZI(0o511000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLZI = function(op)
{
this.opUndefined(op);
};
/**
* opHLLZM(0o512000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLZM = function(op)
{
this.opUndefined(op);
};
/**
* opHLLZS(0o513000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLZS = function(op)
{
this.opUndefined(op);
};
/**
* opHRLZ(0o514000)
*
@ -2919,50 +2881,6 @@ PDP10.opHRLZS = function(op)
this.opUndefined(op);
};
/**
* opHLLO(0o520000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLO = function(op)
{
this.opUndefined(op);
};
/**
* opHLLOI(0o521000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLOI = function(op)
{
this.opUndefined(op);
};
/**
* opHLLOM(0o522000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLOM = function(op)
{
this.opUndefined(op);
};
/**
* opHLLOS(0o523000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLOS = function(op)
{
this.opUndefined(op);
};
/**
* opHRLO(0o524000)
*
@ -3007,50 +2925,6 @@ PDP10.opHRLOS = function(op)
this.opUndefined(op);
};
/**
* opHLLE(0o530000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLE = function(op)
{
this.opUndefined(op);
};
/**
* opHLLEI(0o531000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLEI = function(op)
{
this.opUndefined(op);
};
/**
* opHLLEM(0o532000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLEM = function(op)
{
this.opUndefined(op);
};
/**
* opHLLES(0o533000)
*
* @this {CPUStatePDP10}
* @param {number} op
*/
PDP10.opHLLES = function(op)
{
this.opUndefined(op);
};
/**
* opHRLE(0o534000)
*
@ -4355,6 +4229,56 @@ PDP10.opUndefined = function(op)
this.stopCPU();
};
/**
* setHR(op, dst, src)
*
* @param {number} op
* @param {number} dst (36-bit value whose 18-bit right half is either preserved or modified)
* @param {number} src (36-bit value used to determine the sign extension, if any, for the right half of dst)
* @return {number} (updated dst)
*/
PDP10.setHR = function(op, dst, src)
{
switch(op & 0o600) {
case 0o000:
dst = (dst & PDP10.WORD_MASK);
break;
case 0o200:
dst = 0;
break;
case 0o400:
dst = PDP10.WORD_MASK;
break;
case 0o600:
dst = (src > PDP10.MAX_POS? PDP10.WORD_MASK : 0);
break;
}
return dst;
};
/*
* If we want the basic half-word operations to handle all the sub-operations; ie:
*
* None
* Zero-extend
* One-extend
* Sign-extend
*
* then we need to alias all the sub-functions to the corresponding primary functions.
*/
PDP10.opHLLZ = PDP10.opHLL;
PDP10.opHLLZI = PDP10.opHLLI;
PDP10.opHLLZM = PDP10.opHLLM;
PDP10.opHLLZS = PDP10.opHLLS;
PDP10.opHLLO = PDP10.opHLL;
PDP10.opHLLOI = PDP10.opHLLI;
PDP10.opHLLOM = PDP10.opHLLM;
PDP10.opHLLOS = PDP10.opHLLS;
PDP10.opHLLE = PDP10.opHLL;
PDP10.opHLLEI = PDP10.opHLLI;
PDP10.opHLLEM = PDP10.opHLLM;
PDP10.opHLLES = PDP10.opHLLS;
PDP10.aOpXXX_KA10 = [
PDP10.opUUO, // 0o000xxx
PDP10.opUUO, // 0o001xxx

View file

@ -102,6 +102,7 @@ var PDP10 = {
DATA_LIMIT: Math.pow(2, 36),
WORD_SHIFT: Math.pow(2, 18),
WORD_MASK: 0o777777,
MAX_POS: Math.pow(2, 35) - 1,
/*
* PDP-10 opcodes are 36-bit values, most of which use the following layout:

View file

@ -83,9 +83,7 @@ class MemoryPDP10 {
this.type = type || MemoryPDP10.TYPE.NONE;
this.fReadOnly = (type == MemoryPDP10.TYPE.ROM);
this.dbg = null;
this.readBits = this.readBitsDirect = this.readNone;
this.readWord = this.readWordDirect = this.readNone;
this.writeBits = this.writeBitsDirect = this.writeNone;
this.writeWord = this.writeWordDirect = this.writeNone;
this.cReadBreakpoints = this.cWriteBreakpoints = 0;
this.copyBreakpoints(); // initialize the block's Debugger info; the caller will reinitialize
@ -222,13 +220,11 @@ class MemoryPDP10 {
/**
* setAccess(afn, fDirect)
*
* The afn parameter should be a 4-entry function table containing two bits handlers and
* two word handlers. See the static afnMemory table for an example.
* The afn parameter should be a 2-entry function table containing word read and write handlers.
* See the static afnMemory table for an example.
*
* If no function table is specified, a default is selected based on the Memory type;
* similarly, any undefined entries in the table are filled with default handlers that fall
* back to the bits handlers, and if one or both bits handlers are undefined, they default
* to handlers that simply ignore the access.
* If no function table is specified, a default is selected based on the Memory type; similarly,
* any undefined entries in the table are filled with default handlers.
*
* fDirect indicates that both the default AND the direct handlers should be updated. Direct
* handlers normally match the default handlers, except when "checked" handlers are installed;
@ -260,12 +256,10 @@ class MemoryPDP10 {
setReadAccess(afn, fDirect)
{
if (!fDirect || !this.cReadBreakpoints) {
this.readBits = afn[0] || this.readNone;
this.readWord = afn[2] || this.readNone;
this.readWord = afn[0] || this.readNone;
}
if (fDirect || fDirect === undefined) {
this.readBitsDirect = afn[0] || this.readNone;
this.readWordDirect = afn[2] || this.readNone;
this.readWordDirect = afn[0] || this.readNone;
}
}
@ -279,12 +273,10 @@ class MemoryPDP10 {
setWriteAccess(afn, fDirect)
{
if (!fDirect || !this.cWriteBreakpoints) {
this.writeBits = !this.fReadOnly && afn[1] || this.writeNone;
this.writeWord = !this.fReadOnly && afn[3] || this.writeNone;
this.writeWord = !this.fReadOnly && afn[1] || this.writeNone;
}
if (fDirect || fDirect === undefined) {
this.writeBitsDirect = afn[1] || this.writeNone;
this.writeWordDirect = afn[3] || this.writeNone;
this.writeWordDirect = afn[1] || this.writeNone;
}
}
@ -295,7 +287,6 @@ class MemoryPDP10 {
*/
resetReadAccess()
{
this.readBits = this.readBitsDirect;
this.readWord = this.readWordDirect;
}
@ -306,7 +297,6 @@ class MemoryPDP10 {
*/
resetWriteAccess()
{
this.writeBits = this.fReadOnly? this.writeNone : this.writeBitsDirect;
this.writeWord = this.fReadOnly? this.writeNone : this.writeWordDirect;
}
@ -424,27 +414,6 @@ class MemoryPDP10 {
}
}
/**
* readBitsMemory(off, addr, offBits, lenBits)
*
* @this {MemoryPDP10}
* @param {number} off
* @param {number} addr
* @param {number} offBits (the bit position of the right-most bit of the result, using modern bit numbering)
* @param {number} lenBits
* @return {number}
*/
readBitsMemory(off, addr, offBits, lenBits)
{
var w = this.aw[off];
if (offBits + lenBits <= 32) {
w = (w >> offBits) & ((1 << lenBits) - 1);
} else {
w = Math.trunc(w / Math.pow(2, offBits)) % Math.pow(2, lenBits);
}
return w;
}
/**
* readWordMemory(off, addr)
*
@ -458,29 +427,6 @@ class MemoryPDP10 {
return this.aw[off];
}
/**
* writeBitsMemory(bits, off, addr, offBits, lenBits)
*
* @this {MemoryPDP10}
* @param {number} bits (only the right-most lenBits of bits are used, so it doesn't need to be pre-masked)
* @param {number} off
* @param {number} addr
* @param {number} offBits (the bit position of the right-most bit of the result, using modern bit numbering)
* @param {number} lenBits
*/
writeBitsMemory(bits, off, addr, offBits, lenBits)
{
var w = this.aw[off];
var shiftBits = Math.pow(2, offBits);
bits %= Math.pow(2, lenBits);
var v = (w % Math.pow(2, offBits + lenBits));
w = (w - v) + (bits * shiftBits) + (v % shiftBits);
if (this.aw[off] != w) {
this.aw[off] = w;
this.fDirty = true;
}
}
/**
* writeWordMemory(w, off, addr)
*
@ -491,26 +437,10 @@ class MemoryPDP10 {
*/
writeWordMemory(w, off, addr)
{
this.aw[off] = w;
this.fDirty = true;
}
/**
* readBitsChecked(off, addr, offBits, lenBits)
*
* @this {MemoryPDP10}
* @param {number} off
* @param {number} addr
* @param {number} offBits (the bit position of the right-most bit of the result, using modern bit numbering)
* @param {number} lenBits
* @return {number}
*/
readBitsChecked(off, addr, offBits, lenBits)
{
if (DEBUGGER && this.dbg && this.addr != null) {
this.dbg.checkMemoryRead(this.addr + off);
if (this.aw[off] != w) {
this.aw[off] = w;
this.fDirty = true;
}
return this.readBitsDirect(off, addr, offBits, lenBits);
}
/**
@ -529,24 +459,6 @@ class MemoryPDP10 {
return this.readWordDirect(off, addr);
}
/**
* writeBitsChecked(bits, off, addr, offBits, lenBits)
*
* @this {MemoryPDP10}
* @param {number} bits
* @param {number} off
* @param {number} addr
* @param {number} offBits (the bit position of the right-most bit of the result, using modern bit numbering)
* @param {number} lenBits
*/
writeBitsChecked(bits, off, addr, offBits, lenBits)
{
if (DEBUGGER && this.dbg && this.addr != null) {
this.dbg.checkMemoryWrite(this.addr + off);
}
if (this.fReadOnly) this.writeNone(bits, off, addr); else this.writeBitsDirect(bits, off, addr, offBits, lenBits);
}
/**
* writeWordChecked(w, off, addr)
*
@ -587,11 +499,9 @@ MemoryPDP10.idBlock = 0;
/*
* This is the effective definition of afnNone, but we need not fully define it, because setAccess()
* uses these defaults when any of the 4 handlers (ie, 2 bits handlers and 2 word handlers) are undefined.
* uses these defaults when any of the handlers are undefined.
*
MemoryPDP10.afnNone = [
MemoryPDP10.prototype.readNone,
MemoryPDP10.prototype.writeNone,
MemoryPDP10.prototype.readNone,
MemoryPDP10.prototype.writeNone
];
@ -599,15 +509,11 @@ MemoryPDP10.afnNone = [
MemoryPDP10.afnNone = [];
MemoryPDP10.afnMemory = [
MemoryPDP10.prototype.readBitsMemory,
MemoryPDP10.prototype.writeBitsMemory,
MemoryPDP10.prototype.readWordMemory,
MemoryPDP10.prototype.writeWordMemory
];
MemoryPDP10.afnChecked = [
MemoryPDP10.prototype.readBitsChecked,
MemoryPDP10.prototype.writeBitsChecked,
MemoryPDP10.prototype.readWordChecked,
MemoryPDP10.prototype.writeWordChecked
];

View file

@ -155,7 +155,7 @@ class Int36 {
* The lower bound is ZERO and the upper bound is Int36.MAXVAL. Whenever an Int36 value should be
* interpreted as a signed value, values above Int36.MAXPOS (ie, values with bit 35 set) should be
* converted to their signed counterpart by subtracting the value from Int36.BIT36 (aka MAXVAL + 1);
* the easiest way to do that is call isNegative() to check the sign bit and then call negate() as
* the easiest way to do that is call isNeg() to check the sign bit and then call negate() as
* appropriate.
*
* NOTE: We use modern bit numbering, where bit 0 is the right-most (least-significant) bit and
@ -233,7 +233,7 @@ class Int36 {
var i36Rem = new Int36();
var i36Tmp = new Int36(this.value, this.extended);
if (!fUnsigned && i36Tmp.isNegative()) {
if (!fUnsigned && i36Tmp.isNeg()) {
i36Tmp.negate();
fNeg = true;
}
@ -585,7 +585,7 @@ class Int36 {
fNegQ = !fNegQ;
}
if (this.isNegative()) {
if (this.isNeg()) {
this.negate();
fNegR = true; fNegQ = !fNegQ;
}
@ -593,52 +593,52 @@ class Int36 {
this.extend();
/*
* Initialize the four double-length 72-bit "bits" values we need for the division process.
* Initialize the four double-length 72-bit values we need for the division process.
*
* The process involves shifting the divisor left 1 bit (ie, doubling it) until it equals
* or exceeds the dividend, and then repeatedly subtracting the divisor from the dividend and
* shifting the divisor right 1 bit until the divisor is "exhausted" (no bits left), with an
* "early out" if the dividend gets "exhausted" first.
*
* Note that each element of these "bits" arrays is a 36-bit value, so it's rarely a good idea
* Note that each element of these double arrays is a 36-bit value, so it's rarely a good idea
* to use bit-wise operators on them, because those would operate on only the low 32 bits.
* Stick with the "bits" worker functions I've created, and trust your JavaScript engine to
* Stick with the double worker functions I've created, and trust your JavaScript engine to
* inline/optimize the code.
*
* TODO: Profile this code to determine if individual variables (eg, bitsResLo and bitsResHi)
* TODO: Profile this code to determine if individual variables (eg, dResLo and dResHi)
* instead of 2-element arrays is faster and/or less impactful on garbage collection. I prefer
* both the simplified syntax of arrays as well as their extensibility if we ever want/need
* to go beyond 72 bits.
*/
var bitsRes = [0, 0];
var bitsPow = [1, 0];
var bitsDiv = [divisor, 0];
var bitsRem = [this.value, this.extended];
var dRes = [0, 0];
var dPow = [1, 0];
var dDiv = [divisor, 0];
var dRem = [this.value, this.extended];
while (Int36.cmpBits(bitsRem, bitsDiv) > 0) {
Int36.addBits(bitsDiv, bitsDiv);
Int36.addBits(bitsPow, bitsPow);
while (Int36.cmpD(dRem, dDiv) > 0) {
Int36.addD(dDiv, dDiv);
Int36.addD(dPow, dPow);
}
do {
if (Int36.cmpBits(bitsRem, bitsDiv) >= 0) {
Int36.subBits(bitsRem, bitsDiv);
Int36.addBits(bitsRes, bitsPow);
if (Int36.zeroBits(bitsRem)) break;
if (Int36.cmpD(dRem, dDiv) >= 0) {
Int36.subD(dRem, dDiv);
Int36.addD(dRes, dPow);
if (Int36.zeroD(dRem)) break;
}
Int36.shrBits(bitsDiv);
Int36.shrBits(bitsPow);
} while (!Int36.zeroBits(bitsPow));
Int36.shrD(dDiv);
Int36.shrD(dPow);
} while (!Int36.zeroD(dPow));
/*
* Since divisors are limited to 36-bit values, something's wrong if we have an extended remainder.
*/
if (DEBUG && bitsRem[1]) {
if (DEBUG && dRem[1]) {
console.log("divExtended() assertion failure");
}
this.value = bitsRes[0];
this.extended = bitsRes[1];
this.remainder = bitsRem[0];
this.value = dRes[0];
this.extended = dRes[1];
this.remainder = dRem[0];
if (fNegQ) this.negate();
@ -689,11 +689,11 @@ class Int36 {
}
/**
* isNegative()
* isNeg()
*
* @return {boolean}
*/
isNegative()
isNeg()
{
return (this.extended > Int36.MAXPOS || this.extended == null && this.value > Int36.MAXPOS);
}
@ -738,83 +738,118 @@ class Int36 {
}
/**
* addBits(bitsDst, bitsSrc)
* readBits(off, len)
*
* Adds bitsSrc to bitsDst.
*
* @param {Array.<number>} bitsDst
* @param {Array.<number>} bitsSrc
* @param {number} off (the bit position of the right-most bit of the result, using modern bit numbering)
* @param {number} len
* @return {number}
*/
static addBits(bitsDst, bitsSrc)
readBits(off, len)
{
bitsDst[0] += bitsSrc[0];
bitsDst[1] += bitsSrc[1];
if (bitsDst[0] >= Int36.BIT36) {
bitsDst[0] %= Int36.BIT36;
bitsDst[1]++;
var w = this.value;
if (off + len <= 32) {
w = (w >> off) & ((1 << len) - 1);
} else {
w = Math.trunc(w / Math.pow(2, off)) % Math.pow(2, len);
}
return w;
}
/**
* writeBits(bits, off, len)
*
* @param {number} bits (only the right-most len of bits are used, so it doesn't need to be pre-masked)
* @param {number} off (the bit position of the right-most bit of the result, using modern bit numbering)
* @param {number} len
*/
writeBits(bits, off, len)
{
var w = this.value;
var shift = Math.pow(2, off);
bits %= Math.pow(2, len);
var v = (w % Math.pow(2, off + len));
w = (w - v) + (bits * shift) + (v % shift);
this.value = w;
}
/**
* addD(dDst, dSrc)
*
* Adds dSrc to dDst.
*
* @param {Array.<number>} dDst
* @param {Array.<number>} dSrc
*/
static addD(dDst, dSrc)
{
dDst[0] += dSrc[0];
dDst[1] += dSrc[1];
if (dDst[0] >= Int36.BIT36) {
dDst[0] %= Int36.BIT36;
dDst[1]++;
}
}
/**
* cmpBits(bitsDst, bitsSrc)
* cmpD(dDst, dSrc)
*
* Compares bitsDst to bitsSrc, by computing bitsDst - bitsSrc.
* Compares dDst to dSrc, by computing dDst - dSrc.
*
* @param {Array.<number>} bitsDst
* @param {Array.<number>} bitsSrc
* @return {number} > 0 if bitsDst > bitsSrc, == 0 if bitsDst == bitsSrc, < 0 if bitsDst < bitsSrc
* @param {Array.<number>} dDst
* @param {Array.<number>} dSrc
* @return {number} > 0 if dDst > dSrc, == 0 if dDst == dSrc, < 0 if dDst < dSrc
*/
static cmpBits(bitsDst, bitsSrc)
static cmpD(dDst, dSrc)
{
var result = bitsDst[1] - bitsSrc[1];
if (!result) result = bitsDst[0] - bitsSrc[0];
var result = dDst[1] - dSrc[1];
if (!result) result = dDst[0] - dSrc[0];
return result;
}
/**
* shrBits(bitsDst)
* shrD(dDst)
*
* Shifts bitsDst right one bit.
* Shifts dDst right one bit.
*
* @param {Array.<number>} bitsDst
* @param {Array.<number>} dDst
*/
static shrBits(bitsDst)
static shrD(dDst)
{
if (bitsDst[1] % 2) {
bitsDst[0] += Int36.BIT36;
if (dDst[1] % 2) {
dDst[0] += Int36.BIT36;
}
bitsDst[0] = Math.trunc(bitsDst[0] / 2);
bitsDst[1] = Math.trunc(bitsDst[1] / 2);
dDst[0] = Math.trunc(dDst[0] / 2);
dDst[1] = Math.trunc(dDst[1] / 2);
}
/**
* subBits(bitsDst, bitsSrc)
* subD(dDst, dSrc)
*
* Subtracts bitsSrc from bitsDst.
* Subtracts dSrc from dDst.
*
* @param {Array.<number>} bitsDst
* @param {Array.<number>} bitsSrc
* @param {Array.<number>} dDst
* @param {Array.<number>} dSrc
*/
static subBits(bitsDst, bitsSrc)
static subD(dDst, dSrc)
{
bitsDst[0] -= bitsSrc[0];
bitsDst[1] -= bitsSrc[1];
if (bitsDst[0] < 0) {
bitsDst[0] += Int36.BIT36;
bitsDst[1]--;
dDst[0] -= dSrc[0];
dDst[1] -= dSrc[1];
if (dDst[0] < 0) {
dDst[0] += Int36.BIT36;
dDst[1]--;
}
}
/**
* zeroBits(bits)
* zeroD(d)
*
* True if bits are all zero, false otherwise.
*
* @param {Array.<number>} bits
* @param {Array.<number>} d
*/
static zeroBits(bits)
static zeroD(d)
{
return !bits[0] && !bits[1];
return !d[0] && !d[1];
}
/**

View file

@ -28,22 +28,22 @@
http://pcjs.org/modules/shared/lib/debugger.js (C) Jeff Parsons 2012-2017
http://pcjs.org/modules/pdp10/lib/debugger.js (C) Jeff Parsons 2012-2017
*/
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function Cd(a){t.call(this,"SerialPort",a,1048576);this.v=a.upperCase;"string"==typeof this.v&&(this.v="true"==this.v);this.u=!0;this.i=[];var b=a.binding;if("console"!=b){var c;a=Dd;b&&(void 0===c&&(c="Panel"),(c=y(c,this.id))&&(b=c.G[b])&&this.fa(null,a,b))}this.b=this.B=null;this.exports={connect:this.nb,receiveData:this.Oa,receiveStatus:this.Ob,setConnection:this.Rb}}p(Cd,t);l=Cd.prototype;
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function Fd(a,b,c,d){if(c)if(b){0>a.v&&a.u.length&&(a.v=0);if(0>a.v||b!=a.u[a.v])a.u.splice(0,0,b),a.v=0;a.v--}else a.P?b="end":b=a.u[a.v+1];a=[];if(b){b=b.replace(/""/g,"'");c=0;var e=null;d=d||";";for(var g=0;g<=b.length;g++){var f=b.charAt(g);if('"'==f||"'"==f)e?f==e&&(e=null):e=f;else if(f==d&&!e||!f)a.push(Ya(b.substring(c,g))),c=g+1}}return a}
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function Bd(a){t.call(this,"ROM",a,128);this.U=this.b=null;this.B=+a.addr;this.u=+a.size;this.i=a.alias;"string"==typeof this.i&&(this.i=eval(this.i));this.v=a.file;this.F=Ra(this.v);if(this.v){a=this.v;var b=Sa(this.F);"json"!=b&&"hex"!=b&&(a=Ua()+"/api/v1/dump?file="+this.v+"&format=bytes&decimal=true");var c=this;H(a,null,!0,function(a,b,g){g?(c.ba("Unable to load ROM resource (error "+g+": "+a+")"),c.v=null):(ta(c.Ka,a,b),(a=ib(a,b))?(c.b=a.Y,c.U=a.U):c.v=null);Cd(c)})}}p(Bd,t);
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