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21 lines
446 B
ArmAsm
21 lines
446 B
ArmAsm
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; 2019-12-22, Greg King
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; Link an interrupt handler if joysticks are used by a program.
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;
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.interruptor joy_libref, 9
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.include "cbm_kernal.inc"
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.include "cx16.inc"
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joy_libref:
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lda VERA::IRQ_FLAGS
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lsr a
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bcc not_vsync
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jsr JOYSTICK_SCAN ; Bit-bang game controllers
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clc ; Let other Jiffy handlers run
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not_vsync:
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rts
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