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Improved separation of FDC media parameters from drive parameters

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This commit is contained in:
Jeff Parsons 2014-10-20 00:24:13 -05:00 • committed by jeffpar
commit 1809543577
32 changed files with 1915 additions and 1887 deletions
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28
my_modules/pcjs-client/lib/hdc.js
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@ -34,13 +34,13 @@
"use strict";
if (typeof module !== 'undefined') {
var str = require("../../shared/lib/strlib");
var web = require("../../shared/lib/weblib");
var DiskAPI = require("../../shared/lib/diskapi");
var Component = require("../../shared/lib/component");
var ChipSet = require("./chipset");
var Disk = require("./disk");
var State = require("./state");
var str = require("../../shared/lib/strlib");
var web = require("../../shared/lib/weblib");
var DiskAPI = require("../../shared/lib/diskapi");
var Component = require("../../shared/lib/component");
var ChipSet = require("./chipset");
var Disk = require("./disk");
var State = require("./state");
}
/**
@ -145,7 +145,7 @@ HDC.aDriveTypes = [
* so aDriveTypes must first be indexed by a controller index (this.iHDC).
*
* The following is a more complete description of the drive types supported by the MODEL_5170, where C is
* Cylinders, H is Heads, WP is Write Pre-Comp, and LZ is Landing Zone (in practice, we don't need WP or LZ).
* Cylinders, H is Heads, WP is Write Pre-Comp, and LZ is Landing Zone (in practice, we don't need WP or LZ).
*
* Type C H WP LZ
* ---- --- -- --- ---
@ -457,7 +457,7 @@ HDC.BIOS = {
};
/*
* NOTE: These are useful values for reference, but they're not actually used for anything at the moment.
* NOTE: These are useful values for reference, but they're not actually used for anything at the moment.
*/
HDC.BIOS.DISK_CMD = {
RESET: 0x00,
@ -865,7 +865,7 @@ HDC.prototype.initDrive = function(iDrive, drive, driveConfig, data, fReset)
/*
* The next group of properties are set by user requests to load/unload disk images.
*
* NOTE: I now avoid reinitializing drive.disk in order to retain any previously mounted disk across resets.
* We no longer reinitialize drive.disk, in order to retain previously mounted disk across resets.
*/
if (drive.disk === undefined) {
drive.disk = null;
@ -1235,7 +1235,7 @@ HDC.prototype.outXTCData = function(port, bOut, addrFrom)
}
if (this.regDataTotal >= cbCmd) {
/*
* It's essential that XTC.STATUS.IOMODE be set here, at least after the final 8-byte HDC.XTC.DATA.CMD.INIT_DRIVE sequence.
* It's essential that XTC.STATUS.IOMODE be set here, at least after the final 8-byte HDC.XTC.DATA.CMD.INIT_DRIVE sequence.
*/
this.regStatus |= HDC.XTC.STATUS.IOMODE;
this.regStatus &= ~HDC.XTC.STATUS.REQ;
@ -1650,13 +1650,13 @@ HDC.prototype.outATCDrvHd = function(port, bOut, addrFrom)
* of configured hard drives is something other than 2, using INT 0x13/AH=0x10. This in turn calls the
* BIOS "TST_RDY" function, which selects the drive in this register (see DRIVE_MASK), and then immediately
* expects regStatus to reflect success or failure.
*
*
* We were always returning success, because no ATC command was actually issued, and so the user would
* always get a spurious CMOS configuration error: "System Options Not Set-(Run SETUP)".
*
*
* So now we update regStatus here. I'm not sure which status bits are normally set to indicate failure,
* but it should be sufficient to set or clear the READY bit according to whether the drive exists or not.
*
*
* TODO: Dig into the ATC documentation some more, and determine what other situations, if any, regStatus
* needs to be updated.
*/