8 lines
363 B
Plaintext
8 lines
363 B
Plaintext
do something with $DD00, then RTS, then read $DD00
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Again, $DD00 is a CIA IO register, and so there are a number
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of routines that are required that simply check or modify the
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contents of this register in order to implement the IEC serial
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protocol. Thus it is totally unsurprising to find routines that
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start by reading $DD00 and then processing it in some way.
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