151 lines
2.2 KiB
NASM
151 lines
2.2 KiB
NASM
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.MLIB "APMACS.LIB"
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.FILE "APTV.ASM"
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.TITLE " <<< AMUSEMENT PARK - TODDVIEW HOOKS >>>"
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.WIDTH 132
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.OPTION B,D,L,T
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.MNOLIST
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**************************************************************************
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* *
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* COPYRIGHT (C) 1992 MIDWAY MANUFACTURING COMPANY. *
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* ALL RIGHTS RESERVED. *
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* *
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**************************************************************************
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* GET THE SYSTEM STUFF
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.INCLUDE "AP.H"
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.GLOBAL TVPATCH, TVPATCHX
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.GLOBAL TVBP, TVBPX
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.DEF ROMTRAP
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.REF QSNDRST
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.TEXT
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*
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*HOOK CALLED WHENEVER TODDVIEW GAINS CONTROL OF THE PROCESSOR
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TVBP
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MMTM SP,A1,A14
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;CALLA QSNDRST
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.IF 0 ;TUNIT & ROMTRAPON
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;DISABLE X2E -- ROM TRAP / A2D
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MOVW @INTENB,A14
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ANDNI X2E,A14
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MOVW A14,@INTENB
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.ENDIF
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MMFM SP,A1,A14
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RETS
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*
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*HOOK CALLED BEFORE TODDVIEW GIVES CONTROL BACK TO THE PROGRAM
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TVBPX
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MMTM SP,A1,A14
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MOVW @INTPEND,A1 ;GET PENDING BITS
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ANDNI DIE,A1 ;CLEAR DIE PENDING
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MOVW A1,@INTPEND
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MMFM SP,A1,A14
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RETS
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**
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** ROMTRAP - VECTOR FOR ROM TRAP INTERRUPT
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** A2D INTERRUPT HITS HERE TOO...
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**
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** JFL 11 JAN 93
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**
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ROMTRAP
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.IF TUNIT & DEBUG
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MMTM SP,A0,A1
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;IS THIS THE A2D INTERRUPT?
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MOVW @TALKPORT,A0
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BTST B_A2D,A0
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JRNZ RTNOTA2D
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;READ FROM A2D TO CLEAR IT
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MOVW @A2D_PORT,A0 ;TURN OFF A2D INTERRUPT
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;WAIT A BIT TO LET LINE SETTLE (NEEDED?)
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MOVK 10,A0
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DSJ A0,$
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;CHECK IF BOTH INTERRUPTS HAPPENED
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MOVW @INTPEND,A0 ;CHECK IF A2D CLEAR CAUSED PENDING TO GO AWAY
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ANDI X2E,A0
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JRZ RTX
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TLOCKUP
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NOP ;DOES THIS EVER HAPPEN THAT BOTH GO OFF? NO WAY!
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RTNOTA2D
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TLOCKUP ;WRITE TO ROM
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NOP ;WRITE TO ROM
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RTX
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MMFM SP,A0,A1
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.ENDIF
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RETI
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TVPATCH:
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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.word 0
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TVPATCHX:
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