C64 ROM
Routines
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FCD1
FCCA: stop the cassette motor
Used by the routines at
FBCD
and
FC93
.
FCCA
A5 01
LDA $01
read the 6510 I/O port
FCCC
09 20
ORA #%00100000
mask xx1x xxxx, turn the cassette motor off
FCCE
85 01
STA $01
save the 6510 I/O port
FCD0
60
RTS
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FCBD
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FCD1