[A83] in/out
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[A83] in/out
I'm just reading this:
When direct addressing is used (in a,(n); out (n),a) the
address n is output on the lower 8 address lines, while the
contents of a appear on the higher 8 address lines.
Contrary to this, in the case of indirect addressing (in r,
(c); out (c),r) the data in the register given appears on
the data lines, while the contents of _BC_ are output on
the address lines, i. e. 65536 ports can be addressed.
Is that true?
PG
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