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git-svn-id: https://svn.code.sf.net/p/acme-crossass/code-0/trunk@3 4df02467-bbd4-4a76-a152-e7ce94205b78
81 lines
1.0 KiB
Plaintext
81 lines
1.0 KiB
Plaintext
;ACME 0.07
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!ifdef Lib_65816_std_a !eof
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Lib_65816_std_a = 1
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; Labels and macros for Western Digital's 65c816 processor
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cpu_e_cop = $fff4
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cpu_e_abort = $fff8
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cpu_e_nmi = $fffa
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cpu_e_reset = $fffc
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cpu_e_irq = $fffe
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cpu_n_cop = $fff4
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cpu_n_brk = $fff6
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cpu_n_abort = $fff8
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cpu_n_nmi = $fffa
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cpu_n_irq = $fffe
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!macro cpu_emu {; switch to emulation mode
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sec
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xce
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}
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!macro cpu_native {; switch to native mode
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clc
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xce
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}
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!macro a8 {; switch A to 8 bit
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sep #%..#.....
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!as
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}
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!macro a16 {; switch A to 16 bit
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rep #%..#.....
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!al
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}
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!macro i8 {; switch X/Y to 8 bit
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sep #%...#....
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!rs
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}
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!macro i16 {; switch X/Y to 16 bit
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rep #%...#....
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!rl
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}
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!macro ai8 {; switch A/X/Y to 8 bit
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sep #%..##....
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!as
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!rs
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}
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!macro ai16 {; switch A/X/Y to 16 bit
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rep #%..##....
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!al
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!rl
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}
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!macro a8i16 {; switch A to 8, X/Y to 16 bit
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+a8
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+i16
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}
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!macro a16i8 {; switch A to 16, X/Y to 8 bit
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+a16
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+i8
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}
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!macro inc24 .t {; increase 24-bit counter
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inc .t
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bne .j; "*" syntax not used here because size of ".t" is unknown
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inc .t + 1
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bne .j
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inc .t + 2
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.j
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}
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