mirror of https://github.com/mre/mos6502.git
Add the Revision A variant, one that has no ROR
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@ -418,3 +418,17 @@ impl crate::Variant for Nmos6502 {
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}
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}
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}
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pub struct RevisionA;
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impl crate::Variant for RevisionA {
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fn decode(opcode: u8) -> Option<(Instruction, AddressingMode)> {
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match opcode {
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0x66 => None,
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0x6a => None,
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0x6e => None,
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0x76 => None,
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0x7e => None,
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_ => Nmos6502::decode(opcode),
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}
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}
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}
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