C64 ROM | Routines |
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return Zb = 1 = [STOP]
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F6ED | A5 91 | LDA $91 | read the stop key column | |
F6EF | C9 7F | CMP #$7F | compare with [STP] down | |
F6F1 | D0 07 | BNE $F6FA | if not [STP] or not just [STP] exit | |
just [STP] was pressed
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F6F3 | 08 | PHP | save status | |
F6F4 | 20 CC FF | JSR $FFCC | close input and output channels | |
F6F7 | 85 C6 | STA $C6 | save the keyboard buffer index | |
F6F9 | 28 | PLP | restore status | |
F6FA | 60 | RTS |
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