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Routines |
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Used by the routine at 76F9. The number of lines has just been printed. Has ERIC gone over the limit?
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| F9BB | LD A,($7FC7) | Collect the MSB of the lines total | ||
| F9BE | CP $03 | Is the lines total < 7680 (30*256)? | ||
| F9C0 | RET C | Return if so | ||
| F9C1 | JR NZ,$F9C9 | Jump if the MSB > 3 (lines total > 10240) | ||
| F9C3 | LD A,($7FC6) | So the MSB is 3; collect the LSB from 7FC6 | ||
| F9C6 | CP $E8 | Is the lines total < 10000 (=232+256*30)? | ||
| F9C8 | RET C | Return if so | ||
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ERIC has 10000 lines or more. The end (of the game) is nigh.
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| F9C9 | PUSH HL | |||
| F9CA | LD HL,$FAE2 | Point HL at the first of the last two commands in command list 0xDE ('Find ERIC', and 'Send ERIC home') | ||
| F9CD | LD ($A377),HL | Place this address into bytes 0x77 and 0x78 of MR WACKER's buffer, so that these commands become his command list | ||
| F9D0 | LD HL,$A37A | Set bit 0 of byte 0x7A of MR WACKER's buffer, triggering a command list restart | ||
| F9D3 | SET 0,(HL) | |||
| F9D5 | LD HL,$7FF8 | Set the MSB of the lesson clock to 0xFF (so that the lesson cannot end before MR WACKER has begun looking for ERIC) | ||
| F9D8 | LD (HL),$FF | |||
| F9DA | POP HL | |||
| F9DB | RET | |||
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