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Codify reasons for assorted traps

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This commit is contained in:
Jeff 2016-09-28 15:35:22 -07:00 • committed by Jeff Parsons
commit c858fd0699
7 changed files with 375 additions and 295 deletions
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59
modules/pdp11/lib/device.js
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@ -263,11 +263,35 @@ DevicePDP11.prototype.writeMMR0 = function(data, addr)
var idx = 4;
data = this.cpu.setMMR0(data);
if (data & PDP11.MMR0.ENABLED | PDP11.MMR0.DSTMODE) {
idx = (this.cpu.MMR3 & PDP11.MMR3.MMU_22BIT)? 1 : 2;
idx = (this.cpu.regMMR3 & PDP11.MMR3.MMU_22BIT)? 1 : 2;
}
this.display.misc = (this.display.misc & ~7) | idx;
};
/**
* readRCSR(addr)
*
* @this {DevicePDP11}
* @param {number} addr (eg, PDP11.UNIBUS.RCSR or 177560)
* @return {number}
*/
DevicePDP11.prototype.readRCSR = function(addr)
{
return this.tty.rcsr;
};
/**
* writeRCSR(data, addr)
*
* @this {DevicePDP11}
* @param {number} data
* @param {number} addr (eg, PDP11.UNIBUS.RCSR or 177560)
*/
DevicePDP11.prototype.writeRCSR = function(data, addr)
{
this.tty.rcsr = (this.tty.rcsr & 0x80) | (data & ~0x80);
};
/**
* readXCSR(addr)
*
@ -1090,26 +1114,26 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
var kw11 = this.kw11;
switch (physicalAddress & ~1) {
case 0x3FFF7E: /*017777576*/ // MMR2
result = this.insertData(cpu.MMR2, physicalAddress, data, byteFlag);
if (result >= 0) cpu.MMR2 = result;
result = this.insertData(cpu.regMMR2, physicalAddress, data, byteFlag);
if (result >= 0) cpu.regMMR2 = result;
break;
case 0x3FFF7C: /*017777574*/ // MMR1
result = cpu.MMR1;
result = cpu.regMMR1;
if (result & 0xff00) result = ((result << 8) | (result >> 8)) & 0xffff;
break;
// case 0x3FFF7A: /*017777572*/ // MMR0
// cpu.MMR0 = (cpu.MMR0 & 0xf381) | (cpu.mmuLastMode << 5) | (cpu.mmuLastPage << 1);
// cpu.regMMR0 = (cpu.regMMR0 & 0xf381) | (cpu.mmuLastMode << 5) | (cpu.mmuLastPage << 1);
// if (data < 0) {
// result = cpu.MMR0;
// result = cpu.regMMR0;
// } else {
// result = this.insertData(cpu.MMR0, physicalAddress, data, byteFlag);
// result = this.insertData(cpu.regMMR0, physicalAddress, data, byteFlag);
// if (result >= 0) {
// cpu.MMR0 = result &= 0xf381;
// cpu.regMMR0 = result &= 0xf381;
// cpu.mmuLastMode = (result >> 5) & 3;
// cpu.mmuLastPage = (result >> 1) & 0xf;
// if (result & 0x101) {
// idx = 2; // 18 bit
// if (cpu.MMR3 & 0x10) idx = 1; // 22 bit
// if (cpu.regMMR3 & 0x10) idx = 1; // 22 bit
// if (result & 0x1) {
// cpu.mmuEnable = PDP11.ACCESS.READ | PDP11.ACCESS.WRITE;
// } else {
@ -1421,18 +1445,18 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
switch (physicalAddress & ~1) {
case 0x3FF54E: /*017772516*/ // MMR3 - UB 22 x K S U
if (data < 0) {
result = cpu.MMR3;
result = cpu.regMMR3;
} else {
result = this.insertData(cpu.MMR3, physicalAddress, data, byteFlag);
result = this.insertData(cpu.regMMR3, physicalAddress, data, byteFlag);
if (result >= 0) {
if (cpu.cpuType !== 70) result &= ~0x30; // don't allow 11/45 to do 22 bit or use unibus map
cpu.MMR3 = result;
cpu.regMMR3 = result;
cpu.mmuMask[0] = (result & 4 ? 0xf : 0x7);
cpu.mmuMask[1] = (result & 2 ? 0xf : 0x7);
cpu.mmuMask[3] = (result & 1 ? 0xf : 0x7);
if (cpu.mmuEnable) {
idx = 2; // 18 bit
if (cpu.MMR3 & 0x10) idx = 1; // 22 bit
if (cpu.regMMR3 & 0x10) idx = 1; // 22 bit
this.display.misc = (this.display.misc & ~7) | idx;
}
}
@ -1514,10 +1538,11 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
* ES6 ALERT: As you can see below, I've finally started using computed property names.
*/
DevicePDP11.UNIBUS_TABLE = {
[PDP11.UNIBUS.LKS]: [null, null, DevicePDP11.prototype.readLKS, DevicePDP11.prototype.writeLKS],
[PDP11.UNIBUS.MMR0]: [null, null, DevicePDP11.prototype.readMMR0, DevicePDP11.prototype.writeMMR0],
[PDP11.UNIBUS.XCSR]: [null, null, DevicePDP11.prototype.readXCSR, DevicePDP11.prototype.writeXCSR],
[PDP11.UNIBUS.PSW]: [null, null, DevicePDP11.prototype.readPSW, DevicePDP11.prototype.writePSW]
[PDP11.UNIBUS.LKS]: /* 177546 */ [null, null, DevicePDP11.prototype.readLKS, DevicePDP11.prototype.writeLKS],
[PDP11.UNIBUS.RCSR]: /* 177560 */ [null, null, DevicePDP11.prototype.readRCSR, DevicePDP11.prototype.writeRCSR],
[PDP11.UNIBUS.XCSR]: /* 177564 */ [null, null, DevicePDP11.prototype.readXCSR, DevicePDP11.prototype.writeXCSR],
[PDP11.UNIBUS.MMR0]: /* 177572 */ [null, null, DevicePDP11.prototype.readMMR0, DevicePDP11.prototype.writeMMR0],
[PDP11.UNIBUS.PSW]: /* 177776 */ [null, null, DevicePDP11.prototype.readPSW, DevicePDP11.prototype.writePSW]
};
/**