| C64 ROM | Routines |
| Prev: FE07 | Up: Map | Next: FE1C |
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Used by the routine at FF90.
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| FE18 | 85 9D | STA $9D | set message mode flag | |
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This entry point is used by the routine at FE07.
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| FE1A | A5 90 | LDA $90 | read the serial status byte | |
| Prev: FE07 | Up: Map | Next: FE1C |