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Adds writeback of track location.

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This commit is contained in:
Thomas Harte 2018-06-09 20:34:12 -04:00
parent b4d0d4fff6
commit 12c59ede09
1 changed files with 15 additions and 8 deletions
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23
Machines/AppleII/AppleII.cpp
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@ -276,18 +276,25 @@ class ConcreteMachine:
) {
printf("RWTS %d: %d %d [%d]\n", ram_[io_control_block_address+0x0c], ram_[io_control_block_address+4], ram_[io_control_block_address+5], ram_[0x478]);
// Get the track identified.
/* auto track = diskii_card()->get_drive(ram_[io_control_block_address+0x02] - 1).step_to(Storage::Disk::HeadPosition(ram_[io_control_block_address+4]));
// Get the track identified and store the new head position.
auto track = diskii_card()->get_drive(ram_[io_control_block_address+0x02] - 1).step_to(Storage::Disk::HeadPosition(ram_[io_control_block_address+4]));
// Write the new head position to the proper screen hole.
// Continue only if this was a read...
if(ram_[io_control_block_address+0x0c] == 1) {
// Read logical sector at [5], write [b] bytes (where 0 is 256) to [8]/[9]
// DOS 3.3 keeps the current track (unspecified drive) in 0x478; the current track for drive 1 and drive 2
// is also kept in that Disk II card's screen hole.
ram_[0x478] = ram_[io_control_block_address+4];
if(ram_[io_control_block_address+0x02] == 1) {
ram_[0x47e] = ram_[io_control_block_address+4];
} else {
ram_[0x4fe] = ram_[io_control_block_address+4];
}
// Check whether this is a read, not merely a seek.
// if(ram_[io_control_block_address+0x0c] == 1) {
// // Read logical sector at [5], write [b] bytes (where 0 is 256) to [8]/[9]
// }
// Force an RTS.
*value = 0x60;*/
// *value = 0x60;
}
}
}