GSCats/macros.s

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.macro OP8
.i8
.a8
.endmacro
.macro OP16
.i16
.a16
.endmacro
.macro BITS8A
sep #%00100000
.a8
.endmacro
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.macro BITS8
sep #%00110000
OP8
.endmacro
.macro BITS16
rep #%00110000
OP16
.endmacro
.macro DBR bankNum
BITS8
lda bankNum
pha
plb
BITS16
.endmacro
.macro SYNCDBR
phk
plb
.endmacro
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.macro SAVE_DBR
phb
phk
plb
.endmacro
.macro RESTORE_DBR
plb
.endmacro
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.macro EMULATION
sec ; Enable 8-bit mode
xce
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OP8
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.endmacro
.macro NATIVE
clc ; Enable 16-bit mode
xce
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BITS16
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.endmacro
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.macro SHRVIDEO
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BITS8
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lda NEWVIDEO
ora #%11000001
sta NEWVIDEO
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BITS16
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.endmacro
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.macro CLASSICVIDEO
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BITS8
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lda NEWVIDEO
and #%00111111
sta NEWVIDEO
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BITS16
.endmacro
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.macro SHADOWMEMORY
sep #%00100000 ; 3 16-bit A only, to preserve X/Y
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.a8
lda SHADOW ;5
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sta SHADOWREGISTER ;4
lda #0 ;2
sta SHADOW ;5
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rep #%00100000 ;3
.a16
.endmacro
.macro NORMALMEMORY
sep #%00100000 ; 3 16-bit A only, to preserve X/Y
.a8
lda SHADOWREGISTER ;4
sta SHADOW ;5
rep #%00100000 ;3
.a16
.endmacro
.macro FASTGRAPHICS ;34 cycles, 12 bytes
sei ;2
phd ;4
sep #%00100000 ; 3 16-bit A only, to preserve X/Y
.a8
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lda STACKCTL ;5
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sta STACKREGISTER ;4
ora #$30 ;2
sta STACKCTL ;5
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rep #%00100000 ;3
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.a16
tsc ;2
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sta STACKPTR ;4
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.endmacro
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.macro SLOWGRAPHICS ;28 cycles, 12 bytes
sep #%00100000 ; 3 16-bit A only, to preserve X/Y
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.a8
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lda STACKREGISTER ;4
sta STACKCTL ;5
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rep #%00100000 ;3
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.a16
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lda STACKPTR ;4
tcs ;2
pld ;5
cli ;2
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.endmacro
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.macro LOADPARAM24 bankNumDoubled,addr16
lda #bankNumDoubled
sta PARAM24+1
lda #addr16
sta PARAM24
.endmacro
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.macro pstring Arg
.byte .strlen(Arg), Arg
.endmacro
.macro qbyte Arg
.dbyt Arg>>16,Arg&$0000ffff
.endmacro
.macro qbytei Arg
.dbyt ~(Arg>>16),~(Arg&$0000ffff)
.endmacro
.macro qbyte7 Arg
.dbyt (Arg>>16)&$7777,Arg&$00007777
.endmacro
.macro BREAK
pha
lda breakpoint
beq nobrk
lda #1
sta $e1c029
pla
brk
nobrk:
pla
.endmacro
.macro HARDBRK
pha
lda #1
sta $e1c029
pla
brk
.endmacro
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;;;;;;;;;;
; Stack Macros
.macro SAVE_AXY ; Saves all registers
pha
phx
phy
.endmacro
.macro RESTORE_AXY ; Restores all registers
ply
plx
pla
.endmacro
.macro SAVE_AY ; Saves accumulator and Y index
pha
phy
.endmacro
.macro RESTORE_AY ; Restores accumulator and Y index
ply
pla
.endmacro
.macro SAVE_AX ; Saves accumulator and X index
pha
phx
.endmacro
.macro RESTORE_AX ; Restores accumulator and X index
plx
pla
.endmacro
.macro SAVE_XY ; Saves X and Y index
phx
phy
.endmacro
.macro RESTORE_XY ; Restores X and Y index
ply
plx
.endmacro
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.macro SAVE_P0 ; Saves PARAML0
lda PARAML0
pha
.endmacro
.macro RESTORE_P0 ; Restores PARAML0
pla
sta PARAML0
.endmacro