| C64 ROM | Routines |
| Prev: FED6 | Up: Map | Next: FF2E |
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Used by the routine at FE72.
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| FF07 | AD 95 02 | LDA $0295 | nonstandard bit timing low byte | |
| FF0A | 8D 06 DD | STA $DD06 | save VIA 2 timer B low byte | |
| FF0D | AD 96 02 | LDA $0296 | nonstandard bit timing high byte | |
| FF10 | 8D 07 DD | STA $DD07 | save VIA 2 timer B high byte | |
| FF13 | A9 11 | LDA #$11 | set timer B single shot, start timer B | |
| FF15 | 8D 0F DD | STA $DD0F | save VIA 2 CRB | |
| FF18 | A9 12 | LDA #$12 | ||
| FF1A | 4D A1 02 | EOR $02A1 | EOR with the RS-232 interrupt enable byte | |
| FF1D | 8D A1 02 | STA $02A1 | save the RS-232 interrupt enable byte | |
| FF20 | A9 FF | LDA #$FF | ||
| FF22 | 8D 06 DD | STA $DD06 | save VIA 2 timer B low byte | |
| FF25 | 8D 07 DD | STA $DD07 | save VIA 2 timer B high byte | |
| FF28 | AE 98 02 | LDX $0298 | ||
| FF2B | 86 A8 | STX $A8 | ||
| FF2D | 60 | RTS | ||
| Prev: FED6 | Up: Map | Next: FF2E |