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111 lines
2.2 KiB
C
111 lines
2.2 KiB
C
//
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// main.c
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// 6502
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//
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// Created by Tamas Rudnai on 7/14/19.
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// Copyright © 2019 GameAlloy. All rights reserved.
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//
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#ifndef __6502_INSTR_TRANSFER_H__
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#define __6502_INSTR_TRANSFER_H__
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/**
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TAX Transfer Accumulator to Index X
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A -> X N Z C I D V
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+ + - - - -
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addressing assembler opc bytes cyles
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--------------------------------------------
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implied TAX AA 1 2
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**/
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static inline void TAX() {
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dbgPrintf("TAX ");
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m6502.X = m6502.A;
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set_flags_NZ(m6502.X);
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}
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/**
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TXA Transfer Index X to Accumulator
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X -> A N Z C I D V
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+ + - - - -
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addressing assembler opc bytes cyles
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--------------------------------------------
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implied TXA 8A 1 2
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**/
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static inline void TXA() {
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dbgPrintf("TXA ");
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m6502.A = m6502.X;
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set_flags_NZ(m6502.A);
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}
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/**
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TAY Transfer Accumulator to Index Y
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A -> Y N Z C I D V
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+ + - - - -
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addressing assembler opc bytes cyles
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--------------------------------------------
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implied TAY A8 1 2
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**/
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static inline void TAY() {
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dbgPrintf("TAY ");
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m6502.Y = m6502.A;
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set_flags_NZ(m6502.Y);
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}
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/**
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TYA Transfer Index Y to Accumulator
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Y -> A N Z C I D V
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+ + - - - -
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addressing assembler opc bytes cyles
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--------------------------------------------
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implied TYA 98 1 2
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**/
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static inline void TYA() {
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dbgPrintf("TYA ");
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m6502.A = m6502.Y;
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set_flags_NZ(m6502.A);
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}
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/**
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TSX Transfer Stack Pointer to Index X
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SP -> X N Z C I D V
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+ + - - - -
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addressing assembler opc bytes cyles
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--------------------------------------------
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implied TSX BA 1 2
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**/
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static inline void TSX() {
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dbgPrintf("TSX ");
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m6502.X = m6502.sp;
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set_flags_NZ(m6502.X);
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}
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/**
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TXS Transfer Index X to Stack Register
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X -> SP N Z C I D V
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- - - - - -
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addressing assembler opc bytes cyles
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--------------------------------------------
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implied TXS 9A 1 2
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**/
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static inline void TXS() {
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dbgPrintf("TXS ");
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m6502.sp = m6502.X;
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}
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#endif // __6502_INSTR_TRANSFER_H__
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