Routines |
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F400 | LD L,$64 | Replace the primary command routine address in bytes 0x63 and 0x64 of the teacher's buffer with F400 (this routine) | ||||||
F402 | LD (HL),$F4 | |||||||
F404 | CALL $7CD0 | Is ERIC in the room? | ||||||
F407 | JR Z,$F410 | Jump if so | ||||||
ERIC is absent.
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F409 | LD L,$64 | Replace the address of this primary command routine in bytes 0x63 and 0x64 of the teacher's buffer with that of F300 | ||||||
F40B | LD (HL),$F3 | |||||||
F40D | JP $F305 | Make EINSTEIN tell the teacher that ERIC is not in class | ||||||
ERIC is in class, so fire off a question and answer.
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F410 | CALL $7A32 | Prepare a question and the answer | ||||||
F413 | LD BC,$7986 | Hand over control to the routine at 7986, making the teacher ask the question | ||||||
F416 | CALL $7CF1 | |||||||
Control returns here when the teacher has finished asking the question.
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F419 | EX DE,HL | Transfer the teacher's character number to D | ||||||
F41A | CALL $7CB6 | Make the teacher wait for EINSTEIN to answer the question | ||||||
F41D | JR $F404 |
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