antoine-source/swordofsodan/S1/START.S
Antoine Vignau 92b66ae6ec Adding Sword of Sodan
My 2018 disassembly to make it HDD installable
2022-08-19 11:41:47 +02:00

468 lines
8.3 KiB
ArmAsm

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