I want to read all my 5-inch floppies, using Sprinter.
These were created on TRS-80 Model 4, and have 256-byte
sectors.
What is the I/O port address for 1793, and what is I/O port
address for "drive-select" for A and B drives?
(I wish to use a 5-inch diskette for drive B).
How is interrupt provided to the CPU from WD1793
(e.g. NMI or other INT)?
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