Floppy Disk Controller: Difference between revisions
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m (→Controller Reset: - formatting error) |
m (→Controller Reset: - 2nd formatting error) |
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# Wait for the resulting IRQ6. |
# Wait for the resulting IRQ6. |
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# Send a Sense Interrupt command (required). |
# Send a Sense Interrupt command (required). |
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# If your OS/driver never turned off polling mode (see the Configure command), then you have to send 3 more Sense Interrupt commands. (Alternately, you can tell if you need the extra 3 by examining the top 2 bits of the st0 byte returned by the first Sense Interrupt. If both bits are set, |
# If your OS/driver never turned off polling mode (see the Configure command), then you have to send 3 more Sense Interrupt commands. (Alternately, you can tell if you need the extra 3 by examining the top 2 bits of the st0 byte returned by the first Sense Interrupt. If both bits are set, you need to send 3 more.) |
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you need to send 3 more.) |
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# If your OS/driver never sent a Lock command, then you need to send a new Configure command (the fifo information was lost in the reset). |
# If your OS/driver never sent a Lock command, then you need to send a new Configure command (the fifo information was lost in the reset). |
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# Do a Drive Select procedure for the next drive to be accessed. |
# Do a Drive Select procedure for the next drive to be accessed. |
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