52 lines
755 B
Markdown
52 lines
755 B
Markdown
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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
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