11 lines
324 B
Plaintext
11 lines
324 B
Plaintext
.program z80_write_monitor
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.wrap_target
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wait 0 gpio 10 ; /IOREQ asserted
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mov isr, null
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; IN base is GP0. Capture /OE, DIR, D0-D7, /IOREQ, /RD, CS,
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; A0 and A1 in their corresponding GPIO bit positions.
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in pins, 15
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push block
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wait 1 gpio 10 ; do not count this bus cycle again
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.wrap
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