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Possibly mights the tiniest bit of headway with 'the IWM'.

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I'm now pretty sure that my 3.5" drive, which for now is implemented in the IWM (yuck) is just responding to queries incorrectly.
This commit is contained in:
Thomas Harte
2019-06-13 22:38:09 -04:00
parent f6f9024631
commit bde975a3b9
4 changed files with 23 additions and 13 deletions
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Components/DiskII/IWM.cpp
+15 -10
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@@ -102,7 +102,7 @@ uint8_t IWM::read(int address) {
case SEL: // Disk in place.
LOG("disk in place)");
sense = drives_[active_drive_] && drives_[active_drive_]->has_disk() ? 0x00 : 0x80;
sense = drives_[active_drive_] && drives_[active_drive_]->has_disk() ? 0 : 1;
break;
// case CA0: // Disk head step completed (1 = still stepping?).
@@ -112,21 +112,21 @@ uint8_t IWM::read(int address) {
case CA0|SEL: // Disk locked (i.e. write-protect tab).
LOG("disk locked)");
// sense = drives_[active_drive_] && drives_[active_drive_]->get_is_read_only() ? 0x00 : 0x80;
sense = drives_[active_drive_] && drives_[active_drive_]->get_is_read_only() ? 0x80 : 0x00;
sense = drives_[active_drive_] && drives_[active_drive_]->get_is_read_only() ? 1 : 0;
break;
case CA1: // Disk motor running.
LOG("disk motor running)");
sense = drives_[active_drive_] && drives_[active_drive_]->get_motor_on() ? 0x00 : 0x80;
sense = drives_[active_drive_] && drives_[active_drive_]->get_motor_on() ? 0 : 1;
break;
case CA1|SEL: // Head at track 0.
LOG("head at track 0)");
sense = drives_[active_drive_] && drives_[active_drive_]->get_is_track_zero() ? 0x00 : 0x80;
sense = drives_[active_drive_] && drives_[active_drive_]->get_is_track_zero() ? 0 : 1;
break;
case CA1|CA0|SEL: // Tachometer (?)
sense = drives_[active_drive_] && drives_[active_drive_]->get_tachometer() ? 0x00 : 0x80;
sense = drives_[active_drive_] && drives_[active_drive_]->get_tachometer() ? 0 : 1;
LOG("tachometer " << PADHEX(2) << int(sense) << ")");
break;
@@ -140,20 +140,25 @@ uint8_t IWM::read(int address) {
//
case CA2|CA1: // Single- or double-sided drive.
LOG("single- or double-sided drive)");
sense = drives_[active_drive_] && (drives_[active_drive_]->get_head_count() == 1) ? 0x80 : 0x00;
sense = drives_[active_drive_] && (drives_[active_drive_]->get_head_count() == 1) ? 1 : 0;
break;
case CA2|CA1|CA0: // Present/HD. (per the Mac Plus ROM)
LOG("present/HD)");
sense = drives_[active_drive_] ? 0 : 1;
break;
case CA2|CA1|CA0: // Drive installed. (per the Mac Plus ROM)
case CA2|CA1|CA0|SEL: // Drive installed. (per Inside Macintosh)
LOG("drive installed)");
sense = drives_[active_drive_] ? 0x00 : 0x80;
sense = drives_[active_drive_] ? 0 : 1;
break;
}
return
return uint8_t(
(mode_&0x1f) |
(drive_motor_on_ ? 0x20 : 0x00) |
sense;
(sense << 7)
);
} break;
case Q7: case Q7|ENABLE: