mirror of
https://github.com/blondie7575/SpriteGen.git
synced 2024-06-11 05:29:34 +00:00
9a4c4b7b85
The sprite generator basically works for the four primary hires colors. The included sample program renders all the sample sprites in various places on screen.
166 lines
2.2 KiB
ArmAsm
166 lines
2.2 KiB
ArmAsm
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; macros.s
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; Generally useful macros for 6502 code
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;
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; Created by Quinn Dunki on 8/15/14.
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; Copyright (c) 2014 One Girl, One Laptop Productions. All rights reserved.
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;
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; Macros
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.macro SETSWITCH name ; Sets the named softswitch (assumes write method)
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sta name
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.endmacro
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.macro SAVE_AXY ; Saves all registers
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pha
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phx
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phy
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.endmacro
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.macro RESTORE_AXY ; Restores all registers
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ply
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plx
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pla
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.endmacro
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.macro SAVE_AY ; Saves accumulator and Y index
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pha
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phy
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.endmacro
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.macro RESTORE_AY ; Restores accumulator and Y index
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ply
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pla
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.endmacro
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.macro SAVE_AX ; Saves accumulator and X index
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pha
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phx
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.endmacro
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.macro RESTORE_AX ; Restores accumulator and X index
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plx
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pla
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.endmacro
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.macro SAVE_XY ; Saves X and Y index
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phx
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phy
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.endmacro
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.macro RESTORE_XY ; Restores X and Y index
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ply
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plx
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.endmacro
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.macro SAVE_ZPP ; Saves Zero Page locations we use for parameters
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lda PARAM0
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pha
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lda PARAM1
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pha
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lda PARAM2
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pha
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lda PARAM3
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pha
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.endmacro
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.macro RESTORE_ZPP ; Restores Zero Page locations we use for parameters
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pla
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sta PARAM3
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pla
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sta PARAM2
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pla
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sta PARAM1
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pla
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sta PARAM0
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.endmacro
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.macro SAVE_ZPS ; Saves Zero Page locations we use for scratch
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lda SCRATCH0
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pha
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lda SCRATCH1
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pha
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.endmacro
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.macro RESTORE_ZPS ; Restores Zero Page locations we use for scratch
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pla
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sta SCRATCH1
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pla
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sta SCRATCH0
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.endmacro
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.macro PARAM16 addr
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lda #<addr
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sta PARAM0
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lda #>addr
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sta PARAM1
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.endmacro
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.macro CALL16 func,addr
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PARAM16 addr
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jsr func
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.endmacro
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Rendering macros
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;
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.macro LDY_AVIEW
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asl ; Find our new view record
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asl
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asl
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asl ; Records are 16 bytes wide
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tay
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.endmacro
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.macro LDY_ACTIVEVIEW
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lda WG_ACTIVEVIEW ; Find our new view record
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LDY_AVIEW
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.endmacro
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.macro LDX_ACTIVEVIEW
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lda WG_ACTIVEVIEW ; Find our new view record
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asl
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asl
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asl
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asl ; Records are 16 bytes wide
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tax
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.endmacro
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.macro LDY_FOCUSVIEW
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lda WG_FOCUSVIEW ; Find our new view record
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LDY_AVIEW
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.endmacro
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.macro VBL_SYNC ; Synchronize with vertical blanking
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lda #$80
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;macroWaitVBLToFinish:
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; bit RDVBLBAR
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; bmi macroWaitVBLToFinish
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@macroWaitVBLToStart:
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; bit RDVBLBAR
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; bpl @macroWaitVBLToStart
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.endmacro
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