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72 lines
2.8 KiB
ArmAsm
72 lines
2.8 KiB
ArmAsm
*
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* Alex Lukazi's 4play routines
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* http://lukazi.blogspot.com/
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*
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* (c) 2016, Brutal Deluxe Software
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* http://www.brutaldeluxe.fr/
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*
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* Use them at your own risk ;-)
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*
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mx %11
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org $300
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lst off
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*---------- Entry point
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KBD = $C000
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KBDSTROBE = $C010
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PRBYTE = $FDDA
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COUT = $FDED
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*---------- Driver equates
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FPInitAll = $1000 ; Clear tables and variables
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FPFindAll = FPInitAll+3 ; Find all 4play cards
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FPFindIt = FPFindAll+3 ; Return 1st 4play card found (if any)
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FPLoopIt = FPFindIt+3 ; ...and you can continue looping
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FPReadDigital = FPLoopIt+3 ; Read the joystick the new way
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FPSetAnalogClampValues = FPReadDigital+3 ; Set the values for the old way
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FPReadAnalog = FPSetAnalogClampValues+3 ; Read the joystick the old way
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FPReadTrigger = FPReadAnalog+3 ; Read buttons
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FPReadTrigger1 = FPReadTrigger+3 ; Read buttons
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FPReadTrigger2 = FPReadTrigger1+3 ; Read buttons
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FPReadTrigger3 = FPReadTrigger2+3 ; Read buttons
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FPSetSlot = FPReadTrigger3+3 ; Force 4play slot for...
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FPDirectRead = FPSetSlot+3 ; ...a direct read of a joystick
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*---------- The code
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jsr FPInitAll ; Clear all
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jsr FPFindAll ; Find all 4play cards
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lda $F9 ; Get slot high
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jsr PRBYTE
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lda $F8 ; Get slot low
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jsr PRBYTE
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ldx #$04 ; Force slot 4
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jsr FPSetSlot
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*---
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]lp lda #$8D
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jsr COUT
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ldx #$01 ; Read first joystick
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jsr FPDirectRead
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jsr PRBYTE ; display its value
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lda #$A0
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jsr COUT
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ldx #$02 ; Read second joystick
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jsr FPDirectRead
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jsr PRBYTE ; display its value
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lda KBD ; loop until a
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bpl ]lp ; key is pressed
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bit KBDSTROBE ; exit
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rts
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