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@@ -0,0 +1,51 @@ |
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# zybino: LR35902ish racket language |
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very early days for now. |
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in the racket repl: |
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``` |
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(run-lines (list |
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(8b-ld-reg-imm 4 #x01) |
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(8b-ld-reg-imm 5 #x50) |
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(8b-ld-reg-imm 7 #x69) |
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(8b-ld-reg-reg 6 7) |
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(8b-ld-reg-reg 7 4) |
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(8b-ld-reg-imm 5 #x51) |
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(8b-ld-reg-reg 6 7))) |
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``` |
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will evaluate to: |
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``` |
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PC: $07, SP: $00, Flags: %00000000 |
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BC: $0000, DE: $0000 |
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HL: $0151, AF: $0100 |
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(HL): $01 |
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$0150 > $69 $01 $00 $00 $00 $00 $00 $00 $00 $00 $00 $00 $00 $00 $00 $00 < $0160 |
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``` |
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which is the equivilent of: |
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``` |
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LD H, $01 |
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LD L, $50 |
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LD A, $69 |
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LD (HL), A |
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LD A, H |
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LD L, $51 |
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LD (HL), A |
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``` |
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# notes |
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register numbering is following how the LR35902 decodes instructions, as such: |
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* 0: B |
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* 1: C |
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* 2: D |
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* 3: E |
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* 4: H |
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* 5: L |
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* 6: (HL) |
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* 7: A |
