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bank_80.asm
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DATA_808000:
db $00, $00, $72, $4E, $00, $00, $71, $4E
db $00, $00, $71, $4E, $00, $00, $71, $4E
db $00, $00, $51, $4E, $00, $00, $51, $4E
db $00, $00, $51, $4E, $00, $00, $51, $4A
db $00, $00, $50, $4A, $00, $00, $50, $4A
db $00, $00, $50, $4A, $00, $00, $30, $4A
db $00, $00, $30, $4A, $00, $00, $30, $4A
db $00, $00, $30, $4A, $00, $00, $2F, $4A
db $00, $00, $2F, $4A, $00, $00, $2F, $4A
db $00, $00, $2F, $4A, $00, $00, $0F, $46
db $00, $00, $0F, $46, $00, $00, $0F, $46
db $00, $00, $0E, $46, $00, $00, $0E, $46
db $00, $00, $0E, $46, $00, $00, $0E, $46
db $00, $00, $EE, $45, $00, $00, $EE, $45
db $00, $00, $EE, $45, $00, $00, $EE, $45
db $00, $00, $ED, $45, $00, $00, $ED, $41
db $00, $00, $ED, $41, $00, $00, $CD, $41
db $00, $00, $CD, $41, $00, $00, $CD, $41
db $00, $00, $CD, $41, $00, $00, $CC, $41
db $00, $00, $CC, $41, $00, $00, $CC, $41
db $00, $00, $CC, $41, $00, $00, $AC, $41
db $00, $00, $AC, $41, $00, $00, $AC, $3D
db $00, $00, $AB, $3D, $00, $00, $AB, $3D
db $00, $00, $AB, $3D, $00, $00, $AB, $3D
db $00, $00, $8B, $3D, $00, $00, $8B, $3D
db $00, $00, $8B, $3D, $00, $00, $8B, $3D
db $00, $00, $8A, $3D, $00, $00, $8A, $3D
db $00, $00, $8A, $3D, $00, $00, $8A, $3D
db $00, $00, $8A, $39, $00, $00, $8A, $39
db $00, $00, $6A, $39, $00, $00, $69, $39
db $00, $00, $69, $39, $00, $00, $69, $39
db $00, $00, $69, $39, $00, $00, $69, $39
db $00, $00, $69, $39, $00, $00, $48, $39
db $00, $00, $48, $35, $00, $00, $48, $35
db $00, $00, $48, $35, $00, $00, $48, $35
db $00, $00, $48, $35, $00, $00, $48, $35
db $00, $00, $27, $35, $00, $00, $27, $35
db $00, $00, $27, $31, $00, $00, $27, $31
db $00, $00, $27, $31, $00, $00, $27, $31
db $00, $00, $06, $31, $00, $00, $06, $31
db $00, $00, $06, $2D, $00, $00, $06, $2D
db $00, $00, $06, $2D, $00, $00, $06, $2D
db $00, $00, $05, $2D, $00, $00, $E5, $2C
db $00, $00, $E5, $28, $00, $00, $E5, $28
db $00, $00, $E5, $28, $00, $00, $E5, $28
db $00, $00, $E5, $28, $00, $00, $E4, $24
db $00, $00, $C4, $24, $00, $00, $C4, $24
db $00, $00, $C4, $24, $00, $00, $C4, $24
db $00, $00, $C4, $24, $00, $00, $C3, $20
db $00, $00, $C3, $20, $00, $00, $A3, $20
db $00, $00, $A3, $20, $00, $00, $A3, $20
db $00, $00, $A3, $20, $00, $00, $A3, $1C
db $00, $00, $A2, $1C, $00, $00, $A2, $1C
db $00, $00, $82, $1C, $00, $00, $82, $1C
db $00, $00, $82, $18, $00, $00, $82, $18
db $00, $00, $81, $18, $00, $00, $81, $18
db $00, $00, $81, $18, $00, $00, $61, $18
db $00, $00, $61, $14, $00, $00, $61, $14
db $00, $00, $60, $14, $00, $00, $60, $14
db $00, $00, $60, $14, $00, $00, $60, $14
db $00, $00, $77, $4A, $00, $00, $77, $46
db $00, $00, $77, $46, $00, $00, $77, $46
db $00, $00, $57, $46, $00, $00, $57, $46
db $00, $00, $57, $46, $00, $00, $56, $46
db $00, $00, $56, $42, $00, $00, $56, $42
db $00, $00, $56, $42, $00, $00, $36, $42
db $00, $00, $36, $42, $00, $00, $36, $42
db $00, $00, $36, $42, $00, $00, $36, $3E
db $00, $00, $36, $3E, $00, $00, $36, $3E
db $00, $00, $36, $3E, $00, $00, $15, $3E
db $00, $00, $15, $3E, $00, $00, $15, $3E
db $00, $00, $15, $3A, $00, $00, $15, $3A
db $00, $00, $15, $3A, $00, $00, $15, $3A
db $00, $00, $F5, $39, $00, $00, $F5, $39
db $00, $00, $F5, $39, $00, $00, $F5, $39
db $00, $00, $F5, $35, $00, $00, $F4, $35
db $00, $00, $F4, $35, $00, $00, $D4, $35
db $00, $00, $D4, $35, $00, $00, $D4, $35
db $00, $00, $D4, $35, $00, $00, $D4, $31
db $00, $00, $D4, $31, $00, $00, $D4, $31
db $00, $00, $D4, $31, $00, $00, $B4, $31
db $00, $00, $B4, $31, $00, $00, $B3, $31
db $00, $00, $B3, $2D, $00, $00, $B3, $2D
db $00, $00, $B3, $2D, $00, $00, $B3, $2D
db $00, $00, $93, $2D, $00, $00, $93, $2D
db $00, $00, $93, $2D, $00, $00, $93, $2D
db $00, $00, $93, $29, $00, $00, $93, $29
db $00, $00, $93, $29, $00, $00, $93, $29
db $00, $00, $92, $29, $00, $00, $92, $29
db $00, $00, $72, $29, $00, $00, $72, $25
db $00, $00, $72, $25, $00, $00, $72, $25
db $00, $00, $72, $25, $00, $00, $72, $25
db $00, $00, $72, $25, $00, $00, $52, $21
db $00, $00, $51, $21, $00, $00, $51, $21
db $00, $00, $51, $21, $00, $00, $51, $21
db $00, $00, $51, $21, $00, $00, $51, $21
db $00, $00, $31, $1D, $00, $00, $31, $1D
db $00, $00, $30, $1D, $00, $00, $30, $1D
db $00, $00, $30, $1D, $00, $00, $30, $1D
db $00, $00, $10, $19, $00, $00, $10, $19
db $00, $00, $0F, $19, $00, $00, $0F, $19
db $00, $00, $0F, $19, $00, $00, $0F, $19
db $00, $00, $0F, $15, $00, $00, $EF, $14
db $00, $00, $EE, $14, $00, $00, $EE, $14
db $00, $00, $EE, $14, $00, $00, $EE, $14
db $00, $00, $EE, $14, $00, $00, $ED, $10
db $00, $00, $CD, $10, $00, $00, $CD, $10
db $00, $00, $CD, $10, $00, $00, $CD, $10
db $00, $00, $CD, $10, $00, $00, $CC, $0C
db $00, $00, $CC, $0C, $00, $00, $AC, $0C
db $00, $00, $AC, $0C, $00, $00, $AC, $0C
db $00, $00, $AC, $0C, $00, $00, $AB, $0C
db $00, $00, $AB, $08, $00, $00, $AB, $08
db $00, $00, $8B, $08, $00, $00, $8B, $08
db $00, $00, $8A, $08, $00, $00, $8A, $08
db $00, $00, $8A, $04, $00, $00, $8A, $04
db $00, $00, $8A, $04, $00, $00, $6A, $04
db $00, $00, $69, $04, $00, $00, $69, $04
db $00, $00, $69, $00, $00, $00, $69, $00
db $00, $00, $69, $00, $00, $00, $69, $00
rare_string:
db "Rareware"
piracy_string:
db "A thief!"
display_error_message:
TYA ;$8083D0 \ Copy message id to A
JSL VRAM_payload_handler_global ;$8083D1 | Upload the anti-piracy screen contents
LDA #DATA_FD258E ;$8083D5 |\ Upload background palette
LDY #$0000 ;$8083D8 | |
LDX #$0020 ;$8083DB | |
JSL DMA_palette ;$8083DE |/
LDA #DATA_FD0408 ;$8083E2 |\ Upload piracy text color
LDY #$0000 ;$8083E5 | |
LDX #$0001 ;$8083E8 | |
JSL DMA_palette ;$8083EB |/
LDA #$0039 ;$8083EF |\ Load PPU settings for anti-piracy screen
JSL set_PPU_registers_global ;$8083F2 |/
STP ;$8083F6 /
RESET_start:
SEI ;$8083F7 \ Disable interrupts
LDA #$80 ;$8083F8 |\ Enable F-Blank
STA PPU.screen ;$8083FA |/
LDA #$01 ;$8083FD |\ Enable autojoy and fastROM
STA CPU.enable_interrupts ;$8083FF | |
STA CPU.rom_speed ;$808402 |/
DEC A ;$808405 |\ Disable HDMA
STA CPU.enable_hdma ;$808406 |/
CLC ;$808409 |\ Disable emulation mode
XCE ;$80840A |/
REP #$30 ;$80840B |\ Anti piracy: Ensure dp is zero
TDC ;$80840D | | and the emulation flag was set
ADC #$FFFF ;$80840E | |
BEQ .anti_piracy_test ;$808411 |/
BRL .prepare_anti_piracy ;$808413 / Anti piracy triggered
.anti_piracy_test ; \
TSX ;$808416 |\ Check if the reset vector was
LDA #RESET_start-1 ;$808417 | | the most recent popped value
CMP $FFFF,x ;$80841A | |
BEQ .check_for_false_positive ;$80841D |/
LDY #$1FFD ;$80841F | Load number of RAM bytes to scan
SEP #$20 ;$808422 | Use 8 bit to check each byte
.next_byte ; |
LDA $0000,y ;$808424 | Load byte to scan
CMP #$4C ;$808427 |\ Test for JMP $83F7 (reset vector)
BEQ .jmp_test ;$808429 |/
CMP #$6C ;$80842B |\ Test for JMP ($xxxx) (indirect reset vector)
BEQ .indirect_jmp_test ;$80842D |/
CMP #$60 ;$80842F |\ Test for #$60-#$7F being sequential
BEQ .sequential_test ;$808431 |/
.resume_scanning ; |
DEY ;$808433 |\ If not at the end of RAM continue scanning
BPL .next_byte ;$808434 |/
REP #$20 ;$808436 |\ Test that SRAM is present
LDA.l sram_base ;$808438 | |
INC A ;$80843C | |
STA.l sram_base ;$80843D | |
CMP.l sram_base ;$808441 | |
BNE .prepare_anti_piracy ;$808445 |/ Otherwise trigger anti piracy
DEC A ;$808447 |\ Restore byte modified from SRAM test
STA.l sram_base ;$808448 |/
LDY #$003D ;$80844C | Load wrong console message
LDA PPU.status_ppu2 ;$80844F |\ Verify the console is NTSC
AND #$0010 ;$808452 | |
BNE .prepare_message ;$808455 |/ Display wrong console message
BRA .final_piracy_test ;$808457 / Do the final piracy test
.jmp_test
REP #$20 ;$808459 \
LDA $0001,y ;$80845B |\ Check if the operand was the reset vector
CMP #RESET_start ;$80845E | |
BEQ .check_for_false_positive ;$808461 |/
SEP #$20 ;$808463 |
BRA .resume_scanning ;$808465 / Continue scanning
.indirect_jmp_test
REP #$20 ;$808467 \
LDX $0001,y ;$808469 |\ Test if operand was ROM
BMI .address_rom ;$80846C |/
CPX #$2000 ;$80846E |\ Test if the operand was low RAM
BPL .invalid_address ;$808471 |/ Otherwise skip the indirect test
.address_rom ; |
LDA $0000,x ;$808473 |\ Check if the operand pointed to the reset vector
CMP #RESET_start ;$808476 | |
BEQ .check_for_false_positive ;$808479 |/
.invalid_address ; |
SEP #$20 ;$80847B |
BRA .resume_scanning ;$80847D / Continue scanning
.sequential_test
TYX ;$80847F \ X is used to preserve Y if the test fails
.next_count ; |
CMP $0000,x ;$808480 |\ Scan for the sequential string of $60-$7F
BNE .resume_scanning ;$808483 | |
INX ;$808485 | |
INC A ;$808486 | |
BPL .next_count ;$808487 |/
REP #$20 ;$808489 | Fall through to final check
.check_for_false_positive ; |
PHK ;$80848B |\ Set current databank
PLB ;$80848C |/
LDX #$0006 ;$80848D | Load anti piracy test string length
- ; |
LDA piracy_string_result,x ;$808490 |\ Avoid false positive by checking if
CMP rare_string,x ;$808493 | | the anti piracy check was prior passed
BNE .write_piracy_string ;$808496 | | Otherwise jump and fail anti piracy check
DEX ;$808498 | |
DEX ;$808499 | |
BPL - ;$80849A |/
BRA .prepare_logo ;$80849C / Boot the game
.write_piracy_string
LDX #$0006 ;$80849E \ Load anti piracy string length
LDY #$0004 ;$8084A1 | Load target iteration count
.write_next_byte ; |
LDA piracy_string,x ;$8084A4 |\ Load the current anti piracy byte
STA piracy_string_result,x ;$8084A7 | | Write the anti piracy byte in RAM
CMP.l sram_base,x ;$8084AA | |\ If the byte is already in SRAM decrease the
BNE + ;$8084AE | | | iteration count. If zero, the full string
DEY ;$8084B0 | |/ was already present.
+ ; | |
STA.l sram_base,x ;$8084B1 | | Write the anti piracy byte to SRAM
DEX ;$8084B5 | |\ Move anti piracy index
DEX ;$8084B6 | |/
BPL .write_next_byte ;$8084B7 |/ Continue writing until there are no more bytes
TYA ;$8084B9 |\ If the anti piracy failure string was already in SRAM
BEQ .prepare_anti_piracy ;$8084BA |/ Display the anti piracy message
LDY #$003B ;$8084BC | Otherwise load irregularity detected message
BRA .prepare_message ;$8084BF / Display the message
.prepare_anti_piracy
LDY #$003C ;$8084C1 \ Load anti piracy message
.prepare_message ; |
LDA #$0000 ;$8084C4 |\ Zero the direct page register
TCD ;$8084C7 |/
LDX #stack ;$8084C8 |\ Reset the stack register
TXS ;$8084CB |/
%return(display_error_message) ;$8084CC | Push address to decompress and display the message
%return(clear_VRAM) ;$8084CF | Push address for clearing VRAM
BRA init_registers ;$8084D2 / Initialize MMIO registers
.final_piracy_test ; \
PHK ;$8084D4 |\ Set current databank
PLB ;$8084D5 |/
LDX #$0006 ;$8084D6 | Load anti piracy string length
- ; |
LDA piracy_string_result,x ;$8084D9 |\ Verify the anti piracy failure string is not in RAM
CMP piracy_string,x ;$8084DC | |
BNE .prepare_logo ;$8084DF | |
DEX ;$8084E1 | |
DEX ;$8084E2 | |
BPL - ;$8084E3 |/
BRA .prepare_anti_piracy ;$8084E5 / If the string was matched, display anti piracy message
.prepare_logo ; \
LDA #$0000 ;$8084E7 |\ Clear first word of SRAM
STA.l sram_base ;$8084EA |/
LDX #stack ;$8084EE |\ Reset the stack register
TXS ;$8084F1 |/
%return(start_engine) ;$8084F2 | Push address to start the game engine
%return(clear_VRAM) ;$8084F5 | Push address for clearing VRAM
init_registers: ; |
SEP #$30 ;$8084F8 | Use 8 bit to manipulate MMIO
LDX #$00 ;$8084FA | Reset index to clear PPU MMIO
.clear_PPU ; |
STZ $2101,x ;$8084FC |\ Clear $2101 - $2134
STZ $2101,x ;$8084FF | | Clear twice to handle write twice registers
INX ;$808502 | |
CPX #$34 ;$808503 | |
BNE .clear_PPU ;$808505 |/
LDX #$00 ;$808507 | Reset index to clear CPU MMIO
.clear_CPU ; |
STZ $4202,x ;$808509 |\ Clear 4202-420C
INX ;$80850C | |
CPX #$0B ;$80850D | |
BNE .clear_CPU ;$80850F |/
LDA #$8F ;$808511 |\ Enable F-Blank with full brightness
STA PPU.screen ;$808513 |/
LDA #$80 ;$808516 |\
STA PPU.vram_control ;$808518 | | Increment VRAM after high byte write
STA PPU.set_mode_7 ;$80851B |/ Use large mode 7 tilemap bounds
LDA #$01 ;$80851E |\ Enable fastROM
STA CPU.rom_speed ;$808520 |/
STZ PPU.set_color_math ;$808523 | Disable color math
STZ PPU.video_mode ;$808526 | Reset screen mode
STZ CPU.enable_interrupts ;$808529 | Disable interrupts and autojoy
LDA #$FF ;$80852C |\ Initalize outport (unused)
STA CPU.output_port ;$80852E |/
LDA #$E0 ;$808531 |\ Set fixed color
STA PPU.fixed_color ;$808533 |/
LDA #$30 ;$808536 |\ Clear color math settings
STA PPU.color_addition_logic ;$808538 |/
LDA #$00 ;$80853B |\ Disable mosaic
STA PPU.mosaic ;$80853D |/
STZ PPU.layer_1_scroll_x ;$808540 |\ Clear layer 1-3 horizontal scroll (Layer 1)
STZ PPU.layer_1_scroll_x ;$808543 | |
STZ PPU.layer_2_scroll_x ;$808546 | | Layer 2
STZ PPU.layer_2_scroll_x ;$808549 | |
STZ PPU.layer_3_scroll_x ;$80854C | | Layer 3
STZ PPU.layer_3_scroll_x ;$80854F |/
LDA #$FF ;$808552 |\ Set layer 1-3 vertical scroll to $FFFF
STA PPU.layer_1_scroll_y ;$808554 | | Layer 1
STA PPU.layer_1_scroll_y ;$808557 | |
STA PPU.layer_2_scroll_y ;$80855A | | Layer 2
STA PPU.layer_2_scroll_y ;$80855D | |
STA PPU.layer_3_scroll_y ;$808560 | | Layer 3
STA PPU.layer_3_scroll_y ;$808563 |/
REP #$30 ;$808566 | Restore to 16 bit access...
SEP #$20 ;$808568 | ...Just to make A 8 bit again
LDX #$000A ;$80856A | Load up the number of H/DMA bytes to clear
.clear_DMA ; |
STZ DMA[0].settings,x ;$80856D |\ Zero out channels 0-7
STZ DMA[1].settings,x ;$808570 | |
STZ DMA[2].settings,x ;$808573 | |
STZ DMA[3].settings,x ;$808576 | |
STZ DMA[4].settings,x ;$808579 | |
STZ DMA[5].settings,x ;$80857C | |
STZ DMA[6].settings,x ;$80857F | |
STZ DMA[7].settings,x ;$808582 | |
DEX ;$808585 | | Next byte
BPL .clear_DMA ;$808586 |/ Continue until addresses from all channel are clear
REP #$20 ;$808588 | Back to a full 16 bit
RTS ;$80858A /
init_registers_global:
JSR init_registers ;$80858B \ Wrapper for long calls
RTL ;$80858E /
VRAM_zero_fill:
dw $0000 ;$80858F > Used for VRAM fill byte
clear_VRAM:
STZ PPU.vram_address ;$808591 \ Initialize VRAM to zeros
LDA #VRAM_zero_fill ;$808594 |\ Set DMA source word
STA DMA[0].source ;$808597 |/
STA DMA[0].unused_2 ;$80859A | Set HDMA word (not used.)
STZ DMA[0].size ;$80859D | Set size to zero, (full 64K)
LDA #$1809 ;$8085A0 |\ Set DMA destination 2118, fixed transfer,
STA DMA[0].settings ;$8085A3 |/ with two register write once
SEP #$20 ;$8085A6 |
LDA #VRAM_zero_fill>>16 ;$8085A8 |\ Set DMA source bank
STA DMA[0].source_bank ;$8085AA |/
LDA #$01 ;$8085AD |\
STA CPU.enable_dma ;$8085AF |/ Enable channel 1 DMA
REP #$20 ;$8085B2 |
RTS ;$8085B4 /
clear_VRAM_global:
JSR clear_VRAM ;$8085B5 \ Wrapper for long calls
RTL ;$8085B8 /
start_engine: ; \
STZ $00 ;$8085B9 |\ Zero the first byte of WRAM
LDX #$0000 ;$8085BB | | Set up MVN
LDY #$0001 ;$8085BE | |
LDA #$FFFF ;$8085C1 | | 64K
MVN $7E, $7E ;$8085C4 |/ Copy first byte of WRAM across bank 7E (zero bank 7E)
LDY #$0000 ;$8085C7 |\ Set up another MVN
TYX ;$8085CA | |
LDA #$FFFF ;$8085CB | |
MVN $7F, $7E ;$8085CE |/ Copy 64K from bank 7E to 7F (zero bank 7F)
PHK ;$8085D1 |\ Set the program bank to the data bank
PLB ;$8085D2 |/
LDX #$0006 ;$8085D3 |\ Number of bytes minus one to copy (due to 16 bit)
.rare_string_copy ; | |
LDA rare_string,x ;$8085D6 | | Use the Rareware anti piracy success string,
STA piracy_string_result,x ;$8085D9 | | and copy that into RAM
DEX ;$8085DC | |
DEX ;$8085DD | |
BPL .rare_string_copy ;$8085DE |/ Copy the string until there are no more bytes
JSL upload_spc_engine ;$8085E0 | Upload the SPC engine
restart_rareware_logo: ; |
JSL disable_screen ;$8085E4 | Disable the screen
JSR clear_full_wram ;$8085E8 | Clear WRAM
JML init_rareware_logo ;$8085EB / Initialize the Rareware logo
setup_title_screen_transition: ; \
LDA #$FFFF ;$8085EF |\ After the title screen is reached the first time
STA.l enable_intro_bypass ;$8085F2 |/ allow it to be bypassed.
JSL disable_screen ;$8085F6 | Turn the screen off to allow for f-blank
LDA #init_title_screen ;$8085FA |\ Set the active game mode to title screen init
STA gamemode_pointer ;$8085FD |/
STZ PPU.oam_address ;$8085FF |
LDA #simple_gamemode_nmi ;$808602 | Use a basic nmi routine that delegates to the game mode
JMP set_nmi_pointer_keep_bank ;$808605 / Set the nmi pointer (skip bank reset)
simple_gamemode_nmi: ; \
LDA #stack ;$808608 |\ Reset the stack to clear off the bytes used by the
TCS ;$80860B |/ interrupt handled (and interrupt itself)
CODE_80860C: ; |
LDA #incomplete_frame_nmi ;$80860C |\ Setup a dummy NMI pointer for lag frames
STA NMI_pointer ;$80860F |/
INC global_frame_counter ;$808611 | Increment the frame counter
JMP.w (gamemode_pointer) ;$808613 / Run the active gamemode
CODE_808616:
LDA #$0100 ;$808616 |
CLC ;$808619 |
ADC $0985 ;$80861A |
STA $0985 ;$80861D |
SEP #$20 ;$808620 |
LDA screen_brightness ;$808622 |
STA PPU.screen ;$808625 |
REP #$20 ;$808628 |
CODE_80862A: ; |
PHB ;$80862A |
PHB ;$80862B |
PLA ;$80862C |
SEC ;$80862D |
SBC #$C000 ;$80862E |
BCC CODE_808636 ;$808631 /
DATA_808633:
db $00, $80, $FD
CODE_808636:
INC $D5 ;$808636 \
BNE CODE_808640 ;$808638 |
INC $D7 ;$80863A |
BNE CODE_808640 ;$80863C |
DEC $D7 ;$80863E |
CODE_808640: ; |
LDA #simple_gamemode_nmi ;$808640 |
STA NMI_pointer ;$808643 |
SEP #$20 ;$808645 |
LDA CPU.nmi_flag ;$808647 |
LDA #$81 ;$80864A |
STA CPU.enable_interrupts ;$80864C |
STZ joypad.port_0 ;$80864F |
CODE_808652: ; |
WAI ;$808652 |
BRA CODE_808652 ;$808653 /
LDA player_1_pressed ;$808655 |
AND #$0020 ;$808658 |
BNE CODE_808672 ;$80865B |
LDA $0987 ;$80865D |
CLC ;$808660 |
ADC #$0010 ;$808661 |
CMP #$0800 ;$808664 |
BMI CODE_80866C ;$808667 |
LDA #$0800 ;$808669 |
CODE_80866C: ; |
STA $0987 ;$80866C |
JMP CODE_80860C ;$80866F /
CODE_808672:
LDA $0987 ;$808672 \
SEC ;$808675 |
SBC #$0010 ;$808676 |
BPL CODE_80867E ;$808679 |
LDA #$0000 ;$80867B |
CODE_80867E: ; |
STA $0987 ;$80867E |
JMP CODE_80860C ;$808681 /
CODE_808684:
JSL disable_screen ;$808684 |
SEP #$20 ;$808688 |
LDA #$FF ;$80868A |
STA PPU.layer_1_scroll_y ;$80868C |
STA PPU.layer_1_scroll_y ;$80868F |
REP #$20 ;$808692 |
LDA #DATA_FD0FF0 ;$808694 |
LDY #$0000 ;$808697 |
LDX #$0040 ;$80869A |
JSL DMA_palette ;$80869D |
LDA #$0008 ;$8086A1 |
JSL VRAM_payload_handler_global ;$8086A4 |
LDA #$0007 ;$8086A8 |
JSL set_PPU_registers_global ;$8086AB |
LDA #$7000 ;$8086AF |
STA PPU.vram_address ;$8086B2 |
LDY #$0064 ;$8086B5 |
LDX #$0000 ;$8086B8 |
CODE_8086BB: ; |
LDA.l DATA_ED57EF,x ;$8086BB |
STA PPU.vram_write ;$8086BF |
INX ;$8086C2 |
INX ;$8086C3 |
TXA ;$8086C4 |
AND #$000F ;$8086C5 |
BNE CODE_8086BB ;$8086C8 |
STZ PPU.vram_write ;$8086CA |
STZ PPU.vram_write ;$8086CD |
STZ PPU.vram_write ;$8086D0 |
STZ PPU.vram_write ;$8086D3 |
STZ PPU.vram_write ;$8086D6 |
STZ PPU.vram_write ;$8086D9 |
STZ PPU.vram_write ;$8086DC |
STZ PPU.vram_write ;$8086DF |
DEY ;$8086E2 |
BNE CODE_8086BB ;$8086E3 |
LDA #$0001 ;$8086E5 |
STA pending_dma_hdma_channels ;$8086E8 |
SEP #$20 ;$8086EB |
LDA #$0F ;$8086ED |
STA PPU.screen ;$8086EF |
REP #$20 ;$8086F2 |
CODE_8086F4: ; |
BRA CODE_8086F4 ;$8086F4 /
CODE_8086F6:
JSL disable_screen ;$8086F6 \
PHK ;$8086FA |
PLB ;$8086FB |
LDA #$8000 ;$8086FC |
TSB $08C4 ;$8086FF |
LDA #$0001 ;$808702 |
STA $05FB ;$808705 |
JSR CODE_808712 ;$808708 |
LDA #CODE_8087E1 ;$80870B |
JML CODE_808C9E ;$80870E /
CODE_808712:
LDA #$AA55 ;$808712 \
STA rng_result ;$808715 |
LDA #$3765 ;$808717 |
STA rng_seed_2 ;$80871A |
STZ $05FD ;$80871C |
STZ $05FF ;$80871F |
LDA #$0040 ;$808722 |
TRB $08C2 ;$808725 |
STZ player_1_held ;$808728 |
STZ player_1_released ;$80872B |
STZ player_2_pressed ;$80872E |
LDA $05FB ;$808731 |
CMP #$0002 ;$808734 |
BNE CODE_80875E ;$808737 |
LDA #$000C ;$808739 |
STA level_number ;$80873C |
STA $08C8 ;$80873E |
LDA #$0001 ;$808741 |
STA $08A6 ;$808744 |
LDX $05FD ;$808747 |
LDA level_number ;$80874A |
STA DATA_FE9388,x ;$80874C |
INX ;$808750 |
INX ;$808751 |
LDA $08A6 ;$808752 |
STA DATA_FE9388,x ;$808755 |
INX ;$808759 |
INX ;$80875A |
STX $05FD ;$80875B |
CODE_80875E: ; |
LDA.l $000605 ;$80875E |
AND #$0003 ;$808762 |
CMP #$0003 ;$808765 |
BNE CODE_80876E ;$808768 |
JML restart_rareware_logo ;$80876A /
CODE_80876E:
ASL A ;$80876E \
TAX ;$80876F |
LDA.l DATA_FE958E,x ;$808770 |
STA $000601 ;$808774 |
INC $0605 ;$808778 |
LDA.l $000601 ;$80877B |
STA $36 ;$80877F |
LDA #$00FE ;$808781 |
STA $38 ;$808784 |
LDA $05FB ;$808786 |
CMP #$0001 ;$808789 |
BNE CODE_8087B8 ;$80878C |
PHB ;$80878E |
PHK ;$80878F |
PLB ;$808790 |
LDY $05FD ;$808791 |
LDA [$36],y ;$808794 |
STA $000603 ;$808796 |
INY ;$80879A |
INY ;$80879B |
LDA [$36],y ;$80879C |
STA level_number ;$80879E |
STA $08C8 ;$8087A0 |
INY ;$8087A3 |
INY ;$8087A4 |
LDA [$36],y ;$8087A5 |
STA $08A6 ;$8087A7 |
INY ;$8087AA |
INY ;$8087AB |
STY $05FD ;$8087AC |
INY ;$8087AF |
INY ;$8087B0 |
LDA [$36],y ;$8087B1 |
STA $0005FF ;$8087B3 |
PLB ;$8087B7 |
CODE_8087B8: ; |
RTS ;$8087B8 /
CODE_8087B9:
JSL CODE_80F3FB ;$8087B9 \
PHK ;$8087BD |
PLB ;$8087BE |
LDA #CODE_8087C5 ;$8087BF |
JMP CODE_808C9E ;$8087C2 /
CODE_8087C5:
JML CODE_80F482 ;$8087C5 /
CODE_8087C9:
JSL disable_screen ;$8087C9 |
PHK ;$8087CD |
PLB ;$8087CE |
JSR CODE_808712 ;$8087CF |
LDA #CODE_8087E1 ;$8087D2 |
JML CODE_808C9E ;$8087D5 /
CODE_8087D9:
LDA.l $0006B1 ;$8087D9 \
JML CODE_B5CDFD ;$8087DD /
CODE_8087E1:
PHK ;$8087E1 \
PLB ;$8087E2 |
JSL disable_screen ;$8087E3 |
JSL CODE_BB9210 ;$8087E7 |
PHK ;$8087EB |
PLB ;$8087EC |
LDA #$0200 ;$8087ED |
JSR set_fade ;$8087F0 |
JSR prepare_oam_dma_channel ;$8087F3 |
SEP #$20 ;$8087F6 |
LDA $0529 ;$8087F8 |
STA gamemode_submode ;$8087FB |
LDA $0527 ;$8087FD |
STA nmi_submode ;$808800 |
REP #$20 ;$808802 |
LDA #CODE_808819 ;$808804 |
JMP CODE_808C9E ;$808807 /
CODE_80880A:
SEP #$20 ;$80880A |
STA gamemode_submode ;$80880C |
XBA ;$80880E |
STA nmi_submode ;$80880F |
REP #$20 ;$808811 |
LDA #CODE_808819 ;$808813 |
JMP CODE_808C9E ;$808816 /
CODE_808819:
LDA nmi_submode ;$808819 \
ASL A ;$80881B |
TAX ;$80881C |
JSR (DATA_80B6C1,x) ;$80881D |
SEP #$20 ;$808820 |
LDA CPU.ppu_status ;$808822 |
REP #$20 ;$808825 |
BMI CODE_808830 ;$808827 |
LDA #$0005 ;$808829 |
JSL throw_exception ;$80882C |
CODE_808830: ; |
LDA gamemode_submode ;$808830 |
ASL A ;$808832 |
TAX ;$808833 |
JMP (DATA_80D411,x) ;$808834 /
CODE_808837:
JSR CODE_80883B ;$808837 \
RTL ;$80883A /
CODE_80883B:
BNE CODE_808863 ;$80883B \
LDA #main_sprite_table ;$80883D |
STA $0593 ;$808840 |
LDA #main_sprite_table_end ;$808843 |
STA $0595 ;$808846 |
STZ $08A4 ;$808849 |
LDA $08A4 ;$80884C |
INC A ;$80884F |
STA $08A2 ;$808850 |
LDA #$0E40 ;$808853 |
STA $0597 ;$808856 |
LDA #$16D8 ;$808859 |
STA $0599 ;$80885C |
JSR CODE_808889 ;$80885F |
RTS ;$808862 /
CODE_808863:
LDA #$0E40 ;$808863 \
STA $0593 ;$808866 |
LDA #$16D8 ;$808869 |
STA $0595 ;$80886C |
LDA #$0001 ;$80886F |
STA $08A4 ;$808872 |
INC A ;$808875 |
STA $08A2 ;$808876 |
LDA #main_sprite_table ;$808879 |
STA $0597 ;$80887C |
LDA #main_sprite_table_end ;$80887F |
STA $0599 ;$808882 |
JSR CODE_808889 ;$808885 |
RTS ;$808888 /
CODE_808889:
PHX ;$808889 \
LDX $0593 ;$80888A |
LDA #$001E ;$80888D |
STA $30,x ;$808890 |
LDX $0597 ;$808892 |
LDA #$0000 ;$808895 |
STA $30,x ;$808898 |
PLX ;$80889A |
RTS ;$80889B /
CODE_80889C:
JSR CODE_8088A0 ;$80889C \
RTL ;$80889F /
CODE_8088A0:
LDA $08A4 ;$8088A0 \
EOR #$0001 ;$8088A3 |
BRA CODE_80883B ;$8088A6 /
get_level_number:
LDA level_number ;$8088A8 \ This routine is absolutely stupid. Its a dp load used
RTL ;$8088AA / exactly once in the entire ROM. Competes with SMW stupidity
set_all_oam_offscreen: ; \
LDA #$0200 ;$8088AB |\ Mark the next oam slot as the first slot
STA $70 ;$8088AE |/
JSR set_unused_oam_offscreen ;$8088B0 | Run the normal OAM clear routine
RTL ;$8088B3 /
set_unused_oam_offscreen_global:
PHB ;$8088B4 \ Wrapper for the routine that clears up unused OAM slots
JSR set_unused_oam_offscreen ;$8088B5 |
PLB ;$8088B8 |
RTL ;$8088B9 /
set_unused_oam_offscreen:
PHK ;$8088BA \
PLB ;$8088BB |
LDX $70 ;$8088BC |\ Check if oam is already full
CPX #oam_table+(sizeof(oam)*128) ;$8088BE | |
BEQ .oam_full ;$8088C1 |/
LDA #$F0FF ;$8088C3 | Offscreen Y/X position
.next_slot ; |\
STA $00,x ;$8088C6 | | Mark the slot screen
INX ;$8088C8 | |\ Increment to the next slot
INX ;$8088C9 | | |
INX ;$8088CA | | |
INX ;$8088CB | |/
CPX #$0400 ;$8088CC | | And check if we are at the last oam slot
BNE .next_slot ;$8088CF |/
.oam_full ; |
RTS ;$8088D1 / Dead sprites nuked.
clear_wram_tables:
LDY #.wram_tables ;$8088D2 \ Load an index to the table of tables to clear
PHB ;$8088D5 |\
PHK ;$8088D6 | | Standard data bank swap
PLB ;$8088D7 |/
BRA .clear_table_entry ;$8088D8 / Jump to the table clearing loop entry
.clear_table
TAX ;$8088DA \ Move the table into X as a base pointer
LDA.w wram_clear_table.size,y ;$8088DB |\ Get the number of bytes to clear (divided by 2 because
LSR A ;$8088DE |/ each address is cleared as a word)
.clear_table_slot ; |
STZ $00,x ;$8088DF |\ Clear each slot until A is zero
INX ;$8088E1 | | Each clear handles two bytes
INX ;$8088E2 | |
DEC A ;$8088E3 | |
BNE .clear_table_slot ;$8088E4 |/
INY ;$8088E6 |\ Move to the next table entry
INY ;$8088E7 | |
INY ;$8088E8 | |
INY ;$8088E9 |/
.clear_table_entry ; |
LDA.w wram_clear_table.address,y ;$8088EA |\ Check if the address to clear is valid low ram
BPL .clear_table ;$8088ED |/ Otherwise we are done
PLB ;$8088EF |
RTL ;$8088F0 /
.wram_tables
dw aux_sprite_table, $092E
dw $16B2, $0026
dw $16D8, $0026
dw $0D7A, $0002
dw $0BA0, $0002
dw $0BA2, $0002
dw $0A36, $0002
dw $0A38, $0002
dw $0B04, $0020
dw $0B24, $0040
dw $00EF, $0002
dw $00F1, $0002
dw $0B64, $0010
dw $0B74, $0010
dw $0A42, $0040
dw $0929, $0002
dw $092B, $0002
dw $092D, $0002
dw $0923, $0002
dw $0515, $003E
dw $095B, $0008
dw $0963, $0008
dw $0D4A, $0002
dw $0989, $0002
dw $091B, $0002
dw $0919, $0002
dw $0B02, $0002
dw $FFFF
DMA_to_VRAM:
JSR .DMA_to_VRAM ;$80895F \ Simple JSL to RTS wrapper
RTL ;$808962 /
.DMA_to_VRAM
STA DMA[0].source ;$808963 \ Store the DMA source word
STY DMA[0].size ;$808966 | Store the DMA size
LDA #$1801 ;$808969 |\ Set DMA destination to $2118, write once, two registers
STA DMA[0].settings ;$80896C |/
SEP #$30 ;$80896F |
STX DMA[0].source_bank ;$808971 | Store the DMA source bank
LDA #$01 ;$808974 |\ Enable the DMA
STA CPU.enable_dma ;$808976 |/
REP #$30 ;$808979 |
RTS ;$80897B /
CODE_80897C:
PHB ;$80897C \
JSR CODE_808988 ;$80897D |
PLB ;$808980 |
RTL ;$808981 /
CODE_808982:
JSL CODE_809025 ;$808982 \
BRA CODE_808A00 ;$808986 /
CODE_808988:
PHK ;$808988 \
PLB ;$808989 |
SEP #$20 ;$80898A |
LDA #$01 ;$80898C |
CODE_80898E: ; |
BIT CPU.ppu_status ;$80898E |
BNE CODE_80898E ;$808991 |
REP #$20 ;$808993 |
LDA $05FB ;$808995 |
BNE CODE_808982 ;$808998 |
LDA $0B02 ;$80899A |
AND #$0020 ;$80899D |
BEQ CODE_8089C9 ;$8089A0 |
LDA $0927 ;$8089A2 |
BPL CODE_8089C2 ;$8089A5 |
LDA #$0100 ;$8089A7 |
CLC ;$8089AA |
ADC $0927 ;$8089AB |
STA $0927 ;$8089AE |
LDA #$0002 ;$8089B1 |
TSB $0B02 ;$8089B4 |
LDA player_active_pressed ;$8089B7 |
AND #$EFFF ;$8089BA |
STA player_active_pressed ;$8089BD |
BRA CODE_808A3C ;$8089C0 /
CODE_8089C2:
SEC ;$8089C2 \
SBC $0925 ;$8089C3 |
STA $0927 ;$8089C6 |
CODE_8089C9: ; |
LDA CPU.port_0_data_1 ;$8089C9 |
TAX ;$8089CC |
EOR player_1_held ;$8089CD |
AND CPU.port_0_data_1 ;$8089D0 |
STA player_1_released ;$8089D3 |
TXA ;$8089D6 |
EOR player_1_held ;$8089D7 |
AND player_1_held ;$8089DA |
STA player_2_pressed ;$8089DD |
STX player_1_held ;$8089E0 |
LDA CPU.port_1_data_1 ;$8089E3 |
TAX ;$8089E6 |
EOR player_1_pressed ;$8089E7 |
AND CPU.port_1_data_1 ;$8089EA |
STA player_2_held ;$8089ED |
TXA ;$8089F0 |
EOR player_1_pressed ;$8089F1 |
AND player_1_pressed ;$8089F4 |
STA player_2_released ;$8089F7 |
STX player_1_pressed ;$8089FA |
JSR CODE_808BB0 ;$8089FD |
CODE_808A00: ; |
LDA $060D ;$808A00 |
BNE CODE_808A26 ;$808A03 |
LDA player_1_held ;$808A05 |
STA player_active_held ;$808A08 |
LDA player_1_released ;$808A0B |
STA player_active_pressed ;$808A0E |
BRA CODE_808A3C ;$808A11 /
CODE_808A13:
LDA $060F ;$808A13 \
ASL A ;$808A16 |
TAX ;$808A17 |
LDA $0502,x ;$808A18 |
STA player_active_held ;$808A1B |
LDA $0506,x ;$808A1E |
STA player_active_pressed ;$808A21 |
BRA CODE_808A3C ;$808A24 /
CODE_808A26:
DEC A ;$808A26 \
BNE CODE_808A13 ;$808A27 |
LDA $08A2 ;$808A29 |
AND #$0002 ;$808A2C |
TAX ;$808A2F |
LDA $0502,x ;$808A30 |
STA player_active_held ;$808A33 |
LDA $0506,x ;$808A36 |
STA player_active_pressed ;$808A39 |
CODE_808A3C: ; |
LDA $0B02 ;$808A3C |
AND #$0010 ;$808A3F |
BEQ CODE_808A76 ;$808A42 |
LDA player_active_held ;$808A44 |
XBA ;$808A47 |
AND #$000F ;$808A48 |
ASL A ;$808A4B |
TAX ;$808A4C |
LDA.l DATA_808B90,x ;$808A4D |
EOR player_active_held ;$808A51 |
AND #$0F00 ;$808A54 |
EOR player_active_held ;$808A57 |
STA player_active_held ;$808A5A |
LDA player_active_pressed ;$808A5D |
XBA ;$808A60 |
AND #$000F ;$808A61 |
ASL A ;$808A64 |
TAX ;$808A65 |
LDA.l DATA_808B90,x ;$808A66 |
EOR player_active_pressed ;$808A6A |
AND #$0F00 ;$808A6D |
EOR player_active_pressed ;$808A70 |
STA player_active_pressed ;$808A73 |
CODE_808A76: ; |
LDA $08C2 ;$808A76 |
AND #$0040 ;$808A79 |
BNE CODE_808AB4 ;$808A7C |
if !version == 1 ; |
LDA #$0010 ;$808A7E |
TRB $08C4 ;$808A81 |
BNE CODE_808A8D ;$808A84 |
endif ; |
LDA $08C2 ;$808A86 |
AND #$0040 ;$808A89 |
RTS ;$808A8C /
if !version == 1
CODE_808A8D:
LDA #$0040 ;$808A8D \
TSB $08C2 ;$808A90 |
LDA #$075E ;$808A93 |
JSL play_high_priority_sound ;$808A96 |
LDA #$065E ;$808A9A |
JSL play_high_priority_sound ;$808A9D |
LDA #$055E ;$808AA1 |
JSL play_high_priority_sound ;$808AA4 |
LDA #$045E ;$808AA8 |
JSL play_high_priority_sound ;$808AAB |
LDA global_frame_counter ;$808AAF |
STA $0636 ;$808AB1 |
endif ; |
CODE_808AB4: ; |
LDA player_active_pressed ;$808AB4 |
AND #$1000 ;$808AB7 |
BNE CODE_808AED ;$808ABA |
LDA $D5 ;$808ABC |
SEC ;$808ABE |
SBC #$0001 ;$808ABF |
STA $D5 ;$808AC2 |