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Cleaned up disk types

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This commit is contained in:
Jeff Parsons 2016-03-17 08:31:38 -07:00
commit 456aae0ebe
5 changed files with 63 additions and 64 deletions
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37
modules/pcjs/lib/chipset.js
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@ -2986,8 +2986,15 @@ ChipSet.prototype.advanceDMA = function(channel, fInit)
if (!channel.masked) {
chipset.bus.setByte(addrCur, b);
if (BACKTRACK) {
if (!off && obj.file && chipset.messageEnabled(Messages.DISK)) {
chipset.printMessage("loading " + obj.file.sPath + '[' + obj.offFile + "] at %" + str.toHex(addrCur), true);
if (!off && obj.file) {
if (chipset.messageEnabled(Messages.DISK)) {
chipset.printMessage("loading " + obj.file.sPath + '[' + obj.offFile + "] at %" + str.toHex(addrCur), true);
}
/*
if (obj.file.sPath == "\\SYSBAS.EXE" && obj.offFile == 512) {
chipset.cpu.stopCPU();
}
*/
}
bto = chipset.bus.addBackTrackObject(obj, bto, off);
chipset.bus.writeBackTrackObject(addrCur, bto, off);
@ -4411,14 +4418,14 @@ ChipSet.prototype.out8042InBuffData = function(port, bOut, addrFrom)
break;
/*
* This case is reserved for command bytes that the 8042 is not expecting, which should therefore be passed on
* to the Keyboard itself.
* This case is reserved for command bytes that the 8042 is not expecting, which should therefore be passed
* on to the Keyboard itself.
*
* Here's some relevant MODEL_5170 ROM BIOS code, "XMIT_8042" (missing from the original MODEL_5170 ROM BIOS listing),
* which sends a command code in AL to the Keyboard and waits for a response, returning it in AL. Note that
* the only "success" exit path from this function involves LOOPing 64K times before finally reading the Keyboard's
* response; either the hardware and/or this code seems a bit brain-damaged if that's REALLY what you had to do to ensure
* a valid response....
* Here's some relevant MODEL_5170 ROM BIOS code, "XMIT_8042" (missing from the original MODEL_5170 ROM BIOS
* listing), which sends a command code in AL to the Keyboard and waits for a response, returning it in AL.
* Note that the only "success" exit path from this function involves LOOPing 64K times before finally reading
* the Keyboard's response; either the hardware and/or this code seems a bit brain-damaged if that's REALLY
* what you had to do to ensure a valid response....
*
* F000:1B25 86E0 XCHG AH,AL
* F000:1B27 2BC9 SUB CX,CX
@ -4453,9 +4460,9 @@ ChipSet.prototype.out8042InBuffData = function(port, bOut, addrFrom)
* F000:1B62 83E901 SUB CX,0001 ; EXIT WITH SUCCESS (CX != 0)
* F000:1B65 C3 RET
*
* But WAIT, the FUN doesn't end there. After this function returns, "KBD_RESET" waits for a Keyboard interrupt
* to occur, hoping for scan code 0xAA as the Keyboard's final response. "KBD_RESET" also returns CX to the caller,
* and the caller ("TEST.21") assumes there was no interrupt if CX is zero.
* But WAIT, the FUN doesn't end there. After this function returns, "KBD_RESET" waits for a Keyboard
* interrupt to occur, hoping for scan code 0xAA as the Keyboard's final response. "KBD_RESET" also returns
* CX to the caller, and the caller ("TEST.21") assumes there was no interrupt if CX is zero.
*
* MOV AL,0FDH
* OUT INTA01,AL
@ -4470,9 +4477,9 @@ ChipSet.prototype.out8042InBuffData = function(port, bOut, addrFrom)
* JNZ G11
* ...
*
* However, if [INTR_FLAG] is set immediately, the above code will exit immediately, without ever decrementing CX.
* CX can be zero not only if the loop exhausted it, but also if no looping was required; the latter is not an
* error, but "TEST.21" assumes that it is.
* However, if [INTR_FLAG] is set immediately, the above code will exit immediately, without ever decrementing
* CX. CX can be zero not only if the loop exhausted it, but also if no looping was required; the latter is not
* an error, but "TEST.21" assumes that it is.
*/
default:
this.set8042CmdData(this.b8042CmdData & ~ChipSet.KBC.DATA.CMD.NO_CLOCK);