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Added more register documentation

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This commit is contained in:
Jeff 2016-09-24 21:32:00 -07:00 • committed by Jeff Parsons
commit 56c305ca64
5 changed files with 503 additions and 349 deletions
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72
modules/pdp11/lib/device.js
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@ -204,7 +204,7 @@ DevicePDP11.prototype.initBus = function(cmp, bus, cpu, dbg)
* readPSW(addr)
*
* @this {DevicePDP11}
* @param {number} addr (ie, PDP11.UNIBUS.PSW)
* @param {number} addr (eg, PDP11.UNIBUS.PSW)
* @return {number}
*/
DevicePDP11.prototype.readPSW = function(addr)
@ -697,7 +697,7 @@ DevicePDP11.prototype.insertData = function(original, physicalAddress, data, byt
if (physicalAddress & 1) {
if (!byteFlag) {
//log.push("TRAP 4 201 " + physicalAddress.toString(8) + " " + data.toString(8));
return this.cpu.trap(4, 122);
return this.cpu.trap(PDP11.TRAP.BUS_ERROR, 122);
}
if (data >= 0) {
data = ((data << 8) & 0xff00) | (original & 0xff);
@ -821,7 +821,7 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
case 0x3FFFC0: /*017777700*/ // 017777700 - 017777777
switch (physicalAddress & ~1) {
/*
* Superseded by UNIBUS_TABLE (much more of this code will be commented out
* Superseded by UNIBUS_TABLE (more of this code will be commented out
* as it is replaced by read/write handlers in the UNIBUS_TABLE; stay tuned).
*
case 0x3FFFFE: // 017777776 // PSW
@ -840,19 +840,19 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
*/
case 0x3FFFFC: /*017777774*/ // stack limit
if (data < 0) {
result = cpu.stackLimit & 0xff00;
result = cpu.regSL & 0xff00;
} else {
if (physicalAddress & 1) {
data = data << 8;
}
cpu.stackLimit = data | 0xff;
cpu.regSL = data | 0xff;
result = 0;
}
//log.push("stacklimit access "+cpu.stackLimit.toString(8));
//log.push("stack limit access "+cpu.regSL.toString(8));
break;
case 0x3FFFFA: /*017777772*/ // PIR
if (data < 0) {
result = cpu.pir;
result = cpu.regPIR;
} else {
if (physicalAddress & 1) {
data = data << 8;
@ -864,28 +864,28 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
result += 0x22;
} while (idx >>= 1);
}
cpu.pir = result;
cpu.regPIR = result;
cpu.priorityReview = 2;
}
break;
case 0x3FFFF6: /*017777766*/ // CPU error
if (cpu.cpuType !== 70) return cpu.trap(4, 222);
if (cpu.cpuType !== 70) return cpu.trap(PDP11.TRAP.BUS_ERROR, 222);
if (data < 0) {
result = cpu.CPU_Error;
result = cpu.regCPUErr;
} else {
result = cpu.CPU_Error = 0; // Always writes as zero?
result = cpu.regCPUErr = 0; // TODO: Always writes as zero?
}
break;
case 0x3FFFF4: /*017777764*/ // System I/D
if (cpu.cpuType !== 70) return cpu.trap(4, 224);
if (cpu.cpuType !== 70) return cpu.trap(PDP11.TRAP.BUS_ERROR, 224);
result = 1;
break;
case 0x3FFFF2: /*017777762*/ // Upper size
if (cpu.cpuType !== 70) return cpu.trap(4, 226);
if (cpu.cpuType !== 70) return cpu.trap(PDP11.TRAP.BUS_ERROR, 226);
result = 0;
break;
case 0x3FFFF0: /*017777760*/ // Lower size
if (cpu.cpuType !== 70) return cpu.trap(4, 228);
if (cpu.cpuType !== 70) return cpu.trap(PDP11.TRAP.BUS_ERROR, 228);
result = (BusPDP11.MAX_MEMORY >> 6) - 1;
break;
case 0x3FFFF8: /*017777770*/ // Microprogram break
@ -899,7 +899,7 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
case 0x3FFFE4: /*017777744*/ // Memory system error
case 0x3FFFE2: /*017777742*/ // High error address
case 0x3FFFE0: /*017777740*/ // Low error address
if (cpu.cpuType !== 70) return cpu.trap(4, 232);
if (cpu.cpuType !== 70) return cpu.trap(PDP11.TRAP.BUS_ERROR, 232);
idx = (physicalAddress - 0x3FFFE0) /*017777740*/ >> 1;
if (data < 0) {
result = cpu.controlReg[idx];
@ -968,8 +968,8 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
}
return result;
default:
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 124);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 124);
}
break;
case 0x3FFF80: /*017777600*/ // 017777600 - 017777677 MMU user mode Map
@ -1121,8 +1121,8 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
}
break;
default:
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 126);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 126);
}
break;
case 0x3FFF00: /*017777400*/ // 017777400 - 017777477
@ -1164,8 +1164,8 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
if (result >= 0) rk11.rkdb = result;
break;
default:
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 128);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 128);
}
break;
case 0x3FFDC0: /*017776700*/ // 017777600 - 017777677 rp11 controller
@ -1269,8 +1269,8 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
if (result >= 0) rp11.rpcs3 = result;
break;
default:
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 132);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 132);
}
break;
case 0x3FF900: /*017774400*/ // 017774400 - 017774477
@ -1308,8 +1308,8 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
}
break;
default:
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 134);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 134);
}
break;
case 0x3FF540: /*017772500*/ // 017772500 - 017772577
@ -1334,8 +1334,8 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
}
break;
default:
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 136);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 136);
}
break;
case 0x3FF4C0: /*017772300*/ // 017772300 - 017772377 MMU kernel mode Map
@ -1356,7 +1356,7 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
break;
case 0x3FF0C0: /*017770300*/ // 017770300 - 017770377 Unibus Map
case 0x3FF080: /*017770200*/ // 017770200 - 017770277 Unibus Map
if (cpu.cpuType !== 70) return cpu.trap(4, 234);
if (cpu.cpuType !== 70) return cpu.trap(PDP11.TRAP.BUS_ERROR, 234);
idx = (physicalAddress >> 2) & 0x1f;
result = cpu.unibusMap[idx];
if (physicalAddress & 0x2) /*02*/ result = result >> 16;
@ -1384,13 +1384,13 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
idx = (physicalAddress >> 1) & 0xff;
result = DevicePDP11.M9312[idx];
} else {
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 138);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 138);
}
break;
default:
cpu.CPU_Error |= 0x10;
return cpu.trap(4, 142);
cpu.regCPUErr |= PDP11.CPUERR.TIMEOUT;
return cpu.trap(PDP11.TRAP.BUS_ERROR, 142);
}
if (byteFlag && result >= 0) { // make any required byte adjustment
if ((physicalAddress & 1)) {
@ -1405,8 +1405,12 @@ DevicePDP11.prototype.access = function(physicalAddress, data, byteFlag)
return result;
};
DevicePDP11.UNIBUS_TABLE = {};
DevicePDP11.UNIBUS_TABLE[PDP11.UNIBUS.PSW] = [null, null, DevicePDP11.prototype.readPSW, DevicePDP11.prototype.writePSW];
/*
* ES6 ALERT: As you can see below, I've finally started using computed property names.
*/
DevicePDP11.UNIBUS_TABLE = {
[PDP11.UNIBUS.PSW]: [null, null, DevicePDP11.prototype.readPSW, DevicePDP11.prototype.writePSW]
};
/**
* DevicePDP11.init()