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Floppy Disk Controller: Difference between revisions
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fixed wrong header
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(Old content of TDR section is BS - I have a floppy tape drive that still works. Added Tape Drive Register documentation.) |
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FIFO: The FIFO register may not have a 16byte buffer in all modes, but this is a minor difference that does not really affect its operation.
=== Tape Drive Register ===
TDR: The Tape Drive Register is a R/W register which is identical in all modes. According to the documentation for the Intel 82077AA, the two least significant bits form a number between 1 and 3 (0 is an invalid value, drive 0 may not be selected) that assigns tape support to one particular drive out of four total drives. It is probably irrelevnant for modern uses, is not supported by any emulator and is probably not worth implementing support for unless you have all the real hardware to test this functionality on.
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