468 lines
8.3 KiB
ArmAsm
468 lines
8.3 KiB
ArmAsm
*
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* Sword of Sodan: the game
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*
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* (c) 1989, Discovery Software
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* (s) 2018, Brutal Deluxe Software
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*
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mx %00
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TYP BIN
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ORG $000800
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lst off
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*----------------------------
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use START.E
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ptrA000 = $A000 ; where FILEDATA is in bank 0
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ptr025E38 = $025E3B ; where L5E38 jumps to
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ptr025E88 = $025E8B ; where L5E88 jumps to
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ptr028179 = $02817C ; where L8179 jumps to
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*----------------------------
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JMP L097C
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jmpl L09F8 ; new pointer to loadFILE
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jmpl saveSCORE ; AV 201806 - save score
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L0803 DW $1400
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L0805 DW $0000
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L0807 DW $0000
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L0809 DW $0000
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L080B DW $0000
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L080D DW $0000
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L080F DW $0000
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L0811 DW $0000
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L0813 DB $00
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L0814 DB $00
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L0815 DB $00
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L0816 DB $00
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L0817 DB $00
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L0818 DB $00
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DB $00
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DB $00
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DB $00
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DB $00
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DB $00
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DB $00
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DB $00
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DB $00
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DB $00
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DB $00
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L0823 DB $00
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DB $00
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L0825 DB $00
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DB $00
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L0827 DB $00
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DB $00
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*----------------------------
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L0829 STA L0811
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STY L0807
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STX L0809
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SEP #$30
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LDA #$C8
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STA L08FA
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REP #$30
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LDA #$0003
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STA L0813
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LDA L0811
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STA L0814
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LDA #$1000
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STA L0816
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JSR L08F5
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LDX L0818
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STX L0823
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SEP #$20
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LDA #$D1
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STA L08FA
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REP #$30
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LDA #$0002
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STA L0813
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LDA L0823
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STA L0814
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JSR L08F5
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LDA L0815
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STA L0825
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STA L080D
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LDA L0817
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AND #$00FF
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STA L0827
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STA L080F
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L0883 LDA L0825
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CMP #$8000
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BCC L0893
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LDA #$8000
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STA L080B
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BRA L0899
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L0893 LDA L0825
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STA L080B
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L0899 SEP #$30
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LDA #$CA
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STA L08FA
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REP #$30
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LDA #$0004
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STA L0813
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LDA L0823
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STA L0814
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LDA #$1400
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STA L0815
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LDA L080B
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STA L0817
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JSR L08F5
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LDA L0807
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CMP L0803
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BNE L08CD
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LDA L0809
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CMP L0805
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BEQ L08D0
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L08CD JSR L0949
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L08D0 LDA L0825
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SEC
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SBC L080B
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STA L0825
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BNE L0883
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SEP #$30
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LDA #$CC
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STA L08FA
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REP #$30
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LDA #$0001
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STA L0813
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LDA L0823
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STA L0814
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JSR L08F5
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RTS
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L08F5 SEC
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XCE
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JSR PRODOS8
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L08FA DB $00
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DA L0813
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PHP
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CLC
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XCE
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PLP
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REP #$30
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BCC L0940
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LDX L0811
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LDA |$0003,X
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JSL $025E38
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LDA L0A90
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SEC
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SBC #$000A
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STA L0A90
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STZ $1C
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STZ $1E
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PLA
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SEP #$30
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LDA #$CC
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STA L0938
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REP #$30
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LDA #$0001
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STA L0813
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LDA L0823
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STA L0814
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SEC
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XCE
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JSR PRODOS8
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L0938 DB $00
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DA L0813
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CLC
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XCE
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REP #$30
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RTS
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*----------------------------
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L0940 BIT $D8
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BPL L0948
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JSL $025E88
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L0948 RTS
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*----------------------------
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L0949 SEP #$30
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LDA L0805
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STA L0963+2
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LDA L0809
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STA L0963+1
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REP #$30
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LDA L080B
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DEC
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LDX L0803
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LDY L0807
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L0963 MVN $000000,$000000
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PHK
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PLB
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LDA L0807
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CLC
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ADC L080B
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STA L0807
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LDA L0809
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ADC #$0000
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STA L0809
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RTS
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*----------------------------
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L097C SEC
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XCE
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JSR HOME
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SEI
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CLC
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XCE
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REP #$30
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SEP #$30
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PHB
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LDA #$E1
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PHA
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PLB
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LDA #$80
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TSB CYAREG
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LDA #$40
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TSB NEWVIDEO
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LDA #$30
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TRB STATEREG
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LDA #$0F
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TRB CLOCKCTL
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LDA #$F0
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TRB TBCOLOR
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PLB
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REP #$30
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PHA
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PHP
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SEP #$20
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LDA #$1F
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STAL $E1C035
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REP #$20
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PLP
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PLA
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LDA #$0000
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LDX #$0000
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L09BD STAL $E12000,X
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INX
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INX
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BPL L09BD
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LDA #$0001
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LDY #$0000
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JSL L09F8
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SEP #$20
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L09D1 LDAL $E1C019
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BMI L09D1
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L09D7 LDAL $E1C019
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BPL L09D7
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REP #$20
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LDAL $E1C029
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ORA #$0080
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STAL $E1C029
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LDA #$0000
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LDY #$0000
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JSL L09F8
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JMPL ptr028179
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*
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* SAVE SCORE
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*
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saveSCORE
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rtl
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*
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* LOAD FILE
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*
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* A= INDEX IN $A000
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* Y= ENTRY INDEX FROM THE TARGET SOURCE POINTER
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*
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* A000 = (A010, A012...): THIS IS A
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* A012 = (A0DE, A0F7...): THIS IS Y
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L09F8 PHA
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PHP
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SEP #$20
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LDA #$1F
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STAL $E1C035
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REP #$20
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PLP
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PLA
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PHB
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PHK
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PLB
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STZ $D8
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PHA
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LDX #$00FE
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L0A0F LDA $00,X
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STAL $010100,X
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DEX
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DEX
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BPL L0A0F
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PLA
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PHY
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ASL
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TAY
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LDA ptrA000,Y
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STA $00
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PLA ; WAS Y
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ASL
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TAY
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LDA ($00),Y
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STA $00
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LDY #$0000
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L0A2C LDA ($00),Y
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CMP #$FFFF
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BEQ L0A73
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PHA
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INY
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INY
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LDA ($00),Y
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STA $18
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PHA
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INY
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INY
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LDA ($00),Y
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STA $1A
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TAX
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INY
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INY
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LDA ($00),Y
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STA $1C
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INY
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INY
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LDA ($00),Y
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STA $1E
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INY
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INY
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STY L0A90
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PLY
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PLA
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JSR L0829
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LDA $1C
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ORA $1E
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BEQ L0A6E
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LDA [$18]
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CMP #$9000
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BCC L0A66
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DB $00 ; breaks if size > $9000
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L0A66 INC $18
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INC $18
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JSL L0AC0
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L0A6E LDY L0A90
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BRA L0A2C
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L0A73 LDX #$00FE
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L0A76 LDAL $010100,X
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STA $00,X
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DEX
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DEX
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BPL L0A76
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PLB
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PHA
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PHP
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SEP #$20
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LDA #$1F
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STAL $E1C035
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REP #$20
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PLP
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PLA
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RTL
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L0A90 DW $0000
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*----------------------------
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MX %11
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L0A92 LDY #$00
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STY $12
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LDA #$00
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L0A98 STA $1000,Y
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INY
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CPY #$80
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BNE L0A98
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L0AA0 LDA [$18]
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REP #$30
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INC $18
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SEP #$30
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PHA
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STA [$1C]
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REP #$30
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INC $1C
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DEC $20
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SEP #$30
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PLA
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STA $1000,Y
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INY
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BNE L0AA0
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RTS
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L0ABB LDA #$00
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STA $14
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RTS
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*----------------------------
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MX %00
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L0AC0 PHB
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PEA $0000
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PLB
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PLB
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STA $20
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SEP #$30
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JSR L0A92
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JSR L0ABB
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L0AD0 LDA [$18]
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REP #$30
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INC $18
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SEP #$30
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TAX
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BEQ L0AF9
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LDA [$18]
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REP #$30
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INC $18
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SEP #$30
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TAY
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L0AE4 LDA $1000,Y
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STX $10
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LDX $14
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STA $1100,X
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INX
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STX $14
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LDX $10
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INY
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DEX
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BNE L0AE4
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BRA L0B09
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L0AF9 LDA [$18]
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REP #$30
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INC $18
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SEP #$30
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LDX $14
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STA $1100,X
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INX
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STX $14
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L0B09 LDX #$00
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L0B0B LDA $1100,X
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STA [$1C]
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REP #$30
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INC $1C
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DEC $20
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BEQ L0B2D
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SEP #$30
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LDY $12
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STA $1000,Y
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INY
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STY $12
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INX
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CPX $14
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BNE L0B0B
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LDX #$00
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STX $14
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BRA L0AD0
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L0B2D REP #$30
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PLB
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RTL
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