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https://github.com/nathanriggs/AppleIIAsm-Collection.git
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35 lines
685 B
Plaintext
35 lines
685 B
Plaintext
RAND16
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LDA RNDL
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STA :SEED
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LDA RNDH
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STA :SEED+1
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LDA :SEED
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BEQ :LOW0
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ASL :SEED
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LDA :SEED+1
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ROL
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BCC :NOEOR
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:DOEOR ; HIGH BYTE IN A
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EOR #>$0369
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STA :SEED+1
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LDA :SEED
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EOR #<$0369
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STA :SEED
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JMP :EXIT
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:LOW0
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LDA :SEED+1
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BEQ :DOEOR
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ASL
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BEQ :NOEOR
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BCS :DOEOR
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:NOEOR
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STA :SEED+1
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:EXIT LDX :SEED+1
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LDY :SEED
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STY RETURN
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STX RETURN+1
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LDA #2
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STA RETLEN
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RTS
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:SEED DS 2
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