C64 ROM | Routines |
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Used by the routine at FFB7.
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FE07 | A5 BA | LDA $BA | get the device number | |
FE09 | C9 02 | CMP #$02 | compare device with RS232 device | |
FE0B | D0 0D | BNE $FE1A | if not RS232 device go ?? | |
get RS232 device status
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FE0D | AD 97 02 | LDA $0297 | get the RS232 status register | |
FE10 | 48 | PHA | save the RS232 status value | |
FE11 | A9 00 | LDA #$00 | clear A | |
FE13 | 8D 97 02 | STA $0297 | clear the RS232 status register | |
FE16 | 68 | PLA | restore the RS232 status value | |
FE17 | 60 | RTS |
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