2023-12-22 02:17:58 +01:00
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; .include "irq_handler.h65"
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; .bss
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2023-12-21 17:28:02 +01:00
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2023-12-22 02:17:58 +01:00
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; .code
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2023-12-21 17:28:02 +01:00
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2023-12-22 02:17:58 +01:00
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; .proc register_via_handler
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; .endproc
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2023-12-21 17:28:02 +01:00
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2023-12-22 02:17:58 +01:00
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; .proc remove_via_handler
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; .endproc
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2023-12-21 17:28:02 +01:00
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2023-12-22 02:17:58 +01:00
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; .proc main_handler
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; Print "Unknown IRQ"
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; rti
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; .endproc
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2023-12-21 17:28:02 +01:00
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2023-12-22 02:17:58 +01:00
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; .zeropage
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; tmp: .res 1
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2023-12-21 17:28:02 +01:00
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2023-12-22 02:17:58 +01:00
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; .macro VIAHandler via_addr, via_handlers_table
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; lda via_addr + IO::IFR
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; sta tmp
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; bbr7 tmp,@rts ; irq
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; bbs0 tmp,@ca2
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; bbs1 tmp,@ca1
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; bbs2 tmp,@sr
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; bbs3 tmp,@cb2
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; bbs4 tmp,@cb1
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; bbs5 tmp,@t2
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; bbs6 tmp,@t1
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; ; TODO error, one should have been true
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; stp
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; @rts:
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; rts
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; @ca2: jmp (via_handlers_table)
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; @ca1: jmp (via_handlers_table+2)
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; @sr: jmp (via_handlers_table+4)
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; @cb2: jmp (via_handlers_table+6)
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; @cb1: jmp (via_handlers_table+8)
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; @t2: jmp (via_handlers_table+10)
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; @t1: jmp (via_handlers_table+12)
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; .endmacro
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