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Routines |
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Called from the main loop at 25129.
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| 27022 | LD A,251 | Read keys Q-W-E-R-T. | ||
| 27024 | IN A,(254) | |||
| 27026 | AND 16 | Keep only bit 4 (corresponding to 'T'). | ||
| 27028 | LD HL,31850 | Pick up the last recorded 'T' pressed indicator. | ||
| 27031 | CP (HL) | Does the current value match? | ||
| 27032 | RET Z | Return if so. | ||
| 27033 | LD (HL),A | Save the current 'T' pressed indicator. | ||
| 27034 | AND A | Is 'T' being pressed? | ||
| 27035 | RET NZ | Return if not. | ||
| 27036 | LD HL,31849 | Toggle the sound on/off indicator by flipping bits 3 and 4. | ||
| 27039 | LD A,(HL) | |||
| 27040 | XOR 24 | |||
| 27042 | LD (HL),A | |||
| 27043 | RET | |||
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