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This commit is contained in:
Jeff Parsons 2016-03-09 14:22:26 -08:00
commit 0735ea8186
9 changed files with 61 additions and 45 deletions
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16
modules/pcjs/lib/hdc.js
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@ -151,7 +151,7 @@ HDC.DEFAULT_DRIVE_NAME = "Hard Drive";
/*
* Drive type tables differed across IBM controller models (XTC drive types don't match ATC drive types)
* and across OEMs (eg, Compaq drive types only match a few IBM drive types), so you must use iDriveTable to
* and across OEMs (eg, COMPAQ drive types only match a few IBM drive types), so you must use iDriveTable to
* index the correct table type inside both aDriveTables and aDriveTypes.
*/
HDC.aDriveTables = ["XTC", "ATC", "COMPAQ"];
@ -223,9 +223,9 @@ HDC.aDriveTypes = [
23: [306, 4]
},
/*
* aDriveTypes[2] is for the Compaq DeskPro (ATC) controller.
* aDriveTypes[2] is for the COMPAQ DeskPro (ATC) controller.
*
* NOTE: According to Compaq, drive type 25 (0x19) must be used with their 130Mb drive when using MS-DOS 3.1
* NOTE: According to COMPAQ, drive type 25 (0x19) must be used with their 130Mb drive when using MS-DOS 3.1
* or earlier, or when using any [unspecified] application software that supports only 17 sectors per track;
* otherwise, use drive type 35 (0x23), which uses the drive's full capacity of 34 sectors per track.
*/
@ -233,7 +233,7 @@ HDC.aDriveTypes = [
1: [306, 4], // same as IBM
2: [615, 4], // same as IBM
3: [615, 6], // same as IBM
4: [1023, 8], // 68Mb (67.93Mb: 1023*8*17*512 or 71,233,536 bytes) (TODO: Cylinders is listed as 1024 in the Compaq TechRef; confirm)
4: [1023, 8], // 68Mb (67.93Mb: 1023*8*17*512 or 71,233,536 bytes) (TODO: Cylinders is listed as 1024 in the COMPAQ TechRef; confirm)
5: [940, 6], // same as IBM
6: [697, 5],
7: [462, 8], // same as IBM
@ -269,7 +269,7 @@ HDC.aDriveTypes = [
35: [966, 8, 34], // 130Mb (128.30Mb: 966*8*34*512 or 134,529,024 bytes)
36: [966, 9, 34],
37: [966, 5, 34],
38: [612, 16, 63], // 300Mb (301.22Mb: 612*16*63*512 or 315,850,752 bytes) (TODO: Cylinders is listed as 611 in the Compaq TechRef; confirm)
38: [612, 16, 63], // 300Mb (301.22Mb: 612*16*63*512 or 315,850,752 bytes) (TODO: Cylinders is listed as 611 in the COMPAQ TechRef; confirm)
39: [1023,11, 33],
40: [1023,15, 34],
41: [1630,15, 52],
@ -1865,7 +1865,7 @@ HDC.prototype.outATCDrvHd = function(port, bOut, addrFrom)
* TODO: Dig into the ATC documentation some more, and determine what other situations, if any, regStatus
* needs to be updated.
*
* UPDATE: The Compaq DeskPro 386 ROM BIOS requires setting STATUS.SEEK_OK in addition to STATUS.READY;
* UPDATE: The COMPAQ DeskPro 386 ROM BIOS requires setting STATUS.SEEK_OK in addition to STATUS.READY;
* a quick retest of the MODEL_5170_REV3 BIOS suggests that it's happy with that change, so it's quite likely
* that was the appropriate change all along.
*/
@ -2030,7 +2030,7 @@ HDC.prototype.doATC = function()
* Bytes from the requested sector(s) will now be delivered via inATCByte().
*
* FYI, I'm taking a shotgun approach to these status bits: I need to clear STATUS.BUSY and
* set STATUS.DATA_REQ, because otherwise CompaqDeskPro386 reads will fail, and I need to set
* set STATUS.DATA_REQ, because otherwise COMPAQ DeskPro 386 reads will fail, and I need to set
* the STATUS.READY and STATUS.SEEK_OK bits, because otherwise MODEL_5170_REV3 reads will fail.
*/
hdc.regStatus = HDC.ATC.STATUS.READY | HDC.ATC.STATUS.SEEK_OK | HDC.ATC.STATUS.DATA_REQ;
@ -2063,7 +2063,7 @@ HDC.prototype.doATC = function()
case HDC.ATC.COMMAND.SEEK: // 0x70
/*
* Physically, this moves the head(s) to the requested cylinder, but logically, there isn't anything to do;
* in fact, we didn't even need this command for the MODEL_5170 ROM BIOS (the Compaq DeskPro 386 ROM BIOS was
* in fact, we didn't even need this command for the MODEL_5170 ROM BIOS (the COMPAQ DeskPro 386 ROM BIOS was
* another story).
*/
fInterrupt = true;