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100 lines
2.0 KiB
Plaintext
100 lines
2.0 KiB
Plaintext
X-ASM 2.0 QUICK REFERENCE
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=========================
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6502 commands
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-------------
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ADC - add with carry
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AND - and
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ASL - arithmetic shift left
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BCC - branch if carry clear
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BCS - branch if carry set
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BEQ - branch if equal
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BIT - test bits
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BMI - branch if minus
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BNE - branch if not equal
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BPL - branch if plus
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BRK - break
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BVC - branch if overflow clear
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BVS - branch if overflow set
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CLC - clear carry
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CLD - clear decimal
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CLI - clear interrupts
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CLV - clear overflow
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CMP - compare
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CPX - compare with X
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CPY - compare with Y
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DEC - decrement
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DEX - decrement X
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DEY - decrement Y
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EOR - exclusive or
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INC - increment
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INX - increment X
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INY - increment Y
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JMP - jump
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JSR - jump to subroutine
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LDA - load accumulator
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LDX - load X
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LDY - load Y
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LSR - logical shift right
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NOP - no operation
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ORA - or accumulator
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PHA - push accumulator
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PHP - push flags
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PLA - pull accumulator
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PLP - pull flags
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ROL - rotate left
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ROR - rotate right
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RTI - return from interrupt
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RTS - return from subroutine
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SBC - subtract with carry
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SEC - set carry
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SED - set decimal
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SEI - set interrupts
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STA - store accumulator
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STX - store X
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STY - store Y
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TAX - transfer accumulator to X
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TAY - transfer accumulator to Y
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TSX - transfer stack pointer to X
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TXA - transfer X to accumulator
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TXS - transfer X to stack pointer
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TYA - transfer Y to accumulator
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X-Asm 2.0 pseudo-commands
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-------------------------
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ADD - add
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INW - increment word
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JCC - jump if carry clear
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JCS - jump if carry set
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JEQ - jump if equal
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JMI - jump if minus
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JNE - jump if not equal
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JPL - jump if plus
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JVC - jump if overflow clear
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JVS - jump if overflow set
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MVA - move byte using accumulator
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MVX - move byte using X
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MVY - move byte using Y
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MWA - move word using accumulator
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MWX - move word using X
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MWY - move word using Y
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SUB - subtract
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X-Asm 2.0 directives
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--------------------
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DTA - define data
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EIF - end if
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ELS - else
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END - end
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EQU - equal
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ERT - error if true
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ICL - include
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IFT - if true
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INI - init
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INS - insert
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OPT - options
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ORG - origin
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RUN - run
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===
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