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Updated hard drive tables for all standard IBM PC AT and Compaq DeskPro drive types

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This commit is contained in:
Jeff Parsons 2015-12-05 10:54:03 -08:00
commit 63b4150871
3 changed files with 142 additions and 41 deletions
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28
modules/pcjs/lib/chipset.js
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@ -838,12 +838,14 @@ ChipSet.CMOS = {
DIAG: 0x0E,
SHUTDOWN: 0x0F,
FDRIVE: 0x10,
HDRIVE: 0x12,
HDRIVE: 0x12, // bits 4-7 contain type of drive 0, bits 0-3 contain type of drive 1 (type 0 means none)
EQUIP: 0x14,
BASEMEM_LO: 0x15,
BASEMEM_HI: 0x16, // the BASEMEM values indicate the total Kb of base memory, up to 0x280 (640Kb)
EXTMEM_LO: 0x17,
EXTMEM_HI: 0x18, // the EXTMEM values indicate the total Kb of extended memory, up to 0x3C00 (15Mb)
EXTHDRIVE0: 0x19, // if bits 4-7 of HDRIVE contains 15, then the type of drive 0 is stored here (16-255)
EXTHDRIVE1: 0x1A, // if bits 0-3 of HDRIVE contains 15, then the type of drive 1 is stored here (16-255)
CHKSUM_HI: 0x2E,
CHKSUM_LO: 0x2F, // CMOS bytes included in the checksum calculation: 0x10-0x2D
EXTMEM2_LO: 0x30,
@ -1722,21 +1724,27 @@ ChipSet.prototype.addCMOSMemory = function(addr, size)
* capacity of drives to be specified with a simple array (eg, [360, 360] for two 360Kb drives).
*
* @this {ChipSet}
* @param {number} iDrive
* @param {number} bType
* @param {number} iDrive (0 or 1)
* @param {number} bType (0 for none, 1-14 for original drive type, 16-255 for extended drive type; 15 reserved)
* @return {boolean} true if successful, false if not (eg, CMOS not initialized yet, or no CMOS on this machine)
*/
ChipSet.prototype.setCMOSDriveType = function(iDrive, bType)
{
if (this.abCMOSData) {
var b = this.abCMOSData[ChipSet.CMOS.ADDR.HDRIVE];
this.assert(bType > 0 && bType < 0xf);
if (iDrive) {
b = (b & ChipSet.CMOS.HDRIVE.D0_MASK) | bType;
} else {
b = (b & ChipSet.CMOS.HDRIVE.D1_MASK) | (bType << 4);
var bExt = null, iExt;
var bOrig = this.abCMOSData[ChipSet.CMOS.ADDR.HDRIVE];
if (bType > 15) {
bExt = bType; bType = 15;
}
this.setCMOSByte(ChipSet.CMOS.ADDR.HDRIVE, b);
if (iDrive) {
bOrig = (bOrig & ChipSet.CMOS.HDRIVE.D0_MASK) | bType;
iExt = ChipSet.CMOS.ADDR.EXTHDRIVE1;
} else {
bOrig = (bOrig & ChipSet.CMOS.HDRIVE.D1_MASK) | (bType << 4);
iExt = ChipSet.CMOS.ADDR.EXTHDRIVE0;
}
this.setCMOSByte(ChipSet.CMOS.ADDR.HDRIVE, bOrig);
if (bExt != null) this.setCMOSByte(iExt, bExt);
return true;
}
return false;