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| author | Nikolay Nikolov <nickysn@users.sourceforge.net> | 2018-02-10 13:52:13 +0200 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2018-02-15 00:18:14 -0500 |
| commit | b00a03a49e28d518435deeb22d119bbd959e78a3 (patch) | |
| tree | 3f341f9ad140f83be369a7594e770b229b1618e3 | |
| parent | 4a6dbcea3e412fe12effa2f812f50dd7eae90955 (diff) | |
| download | seabios-b00a03a49e28d518435deeb22d119bbd959e78a3.tar.gz | |
floppy: hold the DOR reset bit low for 4 microseconds, when resetting
Signed-off-by: Nikolay Nikolov <nickysn@users.sourceforge.net>
| -rw-r--r-- | src/hw/floppy.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/hw/floppy.c b/src/hw/floppy.c index 3012b3aa..16989c29 100644 --- a/src/hw/floppy.c +++ b/src/hw/floppy.c @@ -328,6 +328,8 @@ floppy_enable_controller(void) dprintf(2, "Floppy_enable_controller\n"); // Clear the reset bit (enter reset state), but set 'enable IRQ and DMA' floppy_dor_mask(FLOPPY_DOR_RESET, FLOPPY_DOR_IRQ); + // Real hardware needs a 4 microsecond delay + usleep(4); // Set the reset bit (normal operation) and keep 'enable IRQ and DMA' on floppy_dor_mask(0, FLOPPY_DOR_IRQ | FLOPPY_DOR_RESET); int ret = floppy_wait_irq(); |