xucaen Posted January 1, 2015 Share Posted January 1, 2015 I had asked a question in http://atariage.com/forums/topic/233319-78hdrexe-not-compatible-with-windows-7-64/ about the 78hdr.exe, to which RevEng pointed me to http://atariage.com/forums/topic/160424-a78-header-changes/page-2#entry3074840, So, I cut and pasted the header code into the sample (see below) and then I did: dasm 7800aprt.s -f3 -o7800aprt.bin -l7800aprt.lst a78sign -f 7800aprt.bin When I run in emu7800, I get an error saying "ROM not recognized" I've dabbled in 6502 assembly before but still learning. What am I doing wrong? ; Atari 7800 sprite sample ; Written by Daniel Boris (dboris@home.com) ; ; Assemble with DASM ; processor 6502 ; ************ Hardware Adresses *************************** INPTCTRL equ $01 ;Input control AUDC0 equ $15 ;Audio Control Channel 0 AUDC1 equ $16 ;Audio Control Channel 1 AUDF0 equ $17 ;Audio Frequency Channel 0 AUDF1 equ $18 ;Audio Frequency Channel 1 AUDV0 equ $19 ;Audio Volume Channel 0 AUDV1 equ $1A ;Audio Volume Channel 1 INPT0 equ $08 ;Paddle Control Input 0 INPT1 equ $09 ;Paddle Control Input 1 INPT2 equ $0A ;Paddle Control Input 2 INPT3 equ $0B ;Paddle Control Input 3 INPT4 equ $0C ;Player 0 Fire Button Input INPT5 equ $0D ;Player 1 Fire Button Input BACKGRND equ $20 ;Background Color P0C1 equ $21 ;Palette 0 - Color 1 P0C2 equ $22 ;Palette 0 - Color 2 P0C3 equ $23 ;Palette 0 - Color 3 WSYNC equ $20 ;Wait For Sync P1C1 equ $21 ;Palette 1 - Color 1 P1C2 equ $22 ;Palette 1 - Color 2 P1C3 equ $23 ;Palette 1 - Color 3 MSTAT equ $28 ;Maria Status P2C1 equ $29 ;Palette 2 - Color 1 P2C2 equ $2A ;Palette 2 - Color 2 P2C3 equ $2B ;Palette 2 - Color 3 DPPH equ $2C ;Display List List Pointer High P3C1 equ $2D ;Palette 3 - Color 1 P3C2 equ $2E ;Palette 3 - Color 2 P3C3 equ $2F ;Palette 3 - Color 3 DPPL equ $30 ;Display List List Pointer Low P4C1 equ $31 ;Palette 4 - Color 1 P4C2 equ $32 ;Palette 4 - Color 2 P4C3 equ $33 ;Palette 4 - Color 3 CHARBASE equ $34 ;Character Base Address P5C1 equ $35 ;Palette 5 - Color 1 P5C2 equ $36 ;Palette 5 - Color 2 P5C3 equ $37 ;Palette 5 - Color 3 OFFSET equ $38 ;Unused - Store zero here P6C1 equ $39 ;Palette 6 - Color 1 P6C2 equ $3A ;Palette 6 - Color 2 P6C3 equ $3B ;Palette 6 - Color 3 CTRL equ $3C ;Maria Control Register P7C1 equ $3D ;Palette 7 - Color 1 P7C2 equ $3E ;Palette 7 - Color 2 P7C3 equ $3F ;Palette 7 - Color 3 SWCHA equ $280 ;P0, P1 Joystick Directional Input SWCHB equ $282 ;Console Switches CTLSWA equ $281 ;I/O Control for SCHWA CTLSWB equ $283 ;I/O Control for SCHWB SEG.U data ;******* Vairables ******************************** org $40 xpos ds.b 1 ;X Position of sprite ypos ds.b 1 ;Y Position of sprite temp ds.b 1 dlpnt ds.w 1 dlend ds.b 12 ;Index of end of each DL ;********************************************************** SEG ROM HEADER ORG ROMTOP-128 DC.B 1 ; 0 Header version - 1 byte DC.B "ATARI7800" ; 1..16 "ATARI7800 " - 16 bytes DS 7,32 DC.B "Your name here"; 17..48 Cart title - 32 bytes DS HEADER+49-.,0 DC.B $00,$00,256->ROMTOP,$00; 49..52 data length - 4 bytes DC.B $00,$00 ; 53..54 cart type - 2 bytes ; bit 0 - pokey at 4000 ; bit 1 - supergame bank switched ; bit 2 - supergame ram at $4000 ; bit 3 - rom at $4000 ; bit 4 - bank 6 at $4000 ; bit 5 - supergame banked ram ; bit 6 - pokey at $450 ; bit 8-15 - Special ; 0 = Normal cart DC.B 1 ; 55 controller 1 type - 1 byte DC.B 1 ; 56 controller 2 type - 1 byte ; 0 = None ; 1 = Joystick ; 2 = Light Gun DC.B 0 ; 57 0 = NTSC 1 = PAL DC.B 0 ; 58 Save data peripheral - 1 byte (version 2) ; 0 = None / unknown (default) ; 1 = High Score Cart (HSC) ; 2 = SaveKey ORG HEADER+63 DC.B 0 ; 63 Expansion module ; 0 = No expansion module (default on all currently released games) ; 1 = Expansion module required ORG HEADER+100 ; 100..127 "ACTUAL CART DATA STARTS HERE" - 28 bytes DC.B "ACTUAL CART DATA STARTS HERE" ROMTOP ORG $8000 ;Start of code START sei ;Disable interrupts cld ;Clear decimal mode ;******** Atari recommended startup procedure lda #$07 sta INPTCTRL ;Lock into 7800 mode lda #$7F sta CTRL ;Disable DMA lda #$00 sta OFFSET sta INPTCTRL ldx #$FF ;Reset stack pointer txs ;************** Clear zero page and hardware ****** ldx #$40 lda #$00 crloop1 sta $00,x ;Clear zero page sta $100,x ;Clear page 1 inx bne crloop1 ;************* Clear RAM ************************** ldy #$00 ;Clear Ram lda #$18 ;Start at $1800 sta $81 lda #$00 sta $80 crloop3 lda #$00 sta ($80),y ;Store data iny ;Next byte bne crloop3 ;Branch if not done page inc $81 ;Next page lda $81 cmp #$20 ;End at $1FFF bne crloop3 ;Branch if not ldy #$00 ;Clear Ram lda #$22 ;Start at $2200 sta $81 lda #$00 sta $80 crloop4 lda #$00 sta ($80),y ;Store data iny ;Next byte bne crloop4 ;Branch if not done page inc $81 ;Next page lda $81 cmp #$27 ;End at $27FF bne crloop4 ;Branch if not ldx #$00 lda #$00 crloop5 ;Clear 2100-213F sta $2100,x inx cpx #$40 bne crloop5 ;************* Build DLL ******************* ; 20 blank lines ldx #$00 lda #$4F ;16 lines sta $1800,x inx lda #$21 ;$2100 = blank DL sta $1800,x inx lda #$00 sta $1800,x inx lda #$44 ;4 lines sta $1800,x inx lda #$21 sta $1800,x inx lda #$00 sta $1800,x inx ; 192 mode lines divided into 12 regions ldy #$00 DLLloop2 lda #$4F ;16 lines sta $1800,x inx lda DLPOINTH,y sta $1800,x inx lda DLPOINTL,y sta $1800,x inx iny cpy #$0D ;12 DLL entries bne DLLloop2 ; 26 blank lines lda #$4F ;16 lines sta $1800,x inx lda #$21 ;$2100 = blank DL sta $1800,x inx lda #$00 sta $1800,x inx lda #$4A ;10 lines sta $1800,x inx lda #$21 sta $1800,x inx lda #$00 sta $1800,x ;***************** Setup Maria Registers **************** lda #$18 ;DLL at $1800 sta DPPH lda #$00 sta DPPL lda #$18 ;Setup Palette 0 sta P0C1 lda #$38 sta P0C2 lda #$58 sta P0C3 lda #$43 ;Enable DMA sta CTRL lda #$00 ;Setup ports to read mode sta CTLSWA sta CTLSWB lda #$40 ;Set initial X position of sprite sta xpos mainloop lda MSTAT ;Wait for VBLANK and #$80 beq mainloop lda SWCHA ;Read stick and #$80 ;Pushed Right? bne skip1 ldx xpos ;Move sprite to right inx stx xpos skip1 lda SWCHA ;Read stick and #$40 ;Pushed Left? bne skip2 ldx xpos ;Move sprite to left dex stx xpos skip2 lda SWCHA ;Read stick and #$20 ;Pushed Down? bne skip3 ldx ypos ;Move sprite down cpx #176 beq skip3 ;Don't move if we are at the bottom inx stx ypos skip3 lda SWCHA ;Read stick and #$10 ;Pushed Up? bne skip4 ldx ypos ;Move sprite up beq skip4 ;Don't move if we are at the top dex stx ypos skip4 ;********************** reset DL ends ****************** ldx #$0C lda #$00 dlclearloop dex sta dlend,x bne dlclearloop ;******************** build DL entries ********************* lda ypos ;Get Y position and #$F0 lsr ;Divide by 16 lsr lsr lsr tax lda DLPOINTL,x ;Get pointer to DL that this sprite starts in sta dlpnt lda DLPOINTH,x sta dlpnt+1 ;Create DL entry for upper part of sprite ldy dlend,x ;Get the index to the end of this DL lda #$00 sta (dlpnt),y ;Low byte of data address iny lda #$40 ;Mode 320x1 sta (dlpnt),y iny lda ypos and #$0F ora #$a0 sta (dlpnt),y iny lda #$1F ;Palette 0, 1 byte wide sta (dlpnt),y iny lda xpos ;Horizontal position sta (dlpnt),y sty dlend,x lda ypos and #$0F ;See if sprite is entirely within this region beq doneDL ;branch if it is ;Create DL entry for lower part of sprite inx ;Next region lda DLPOINTL,x ;Get pointer to next DL sta dlpnt lda DLPOINTH,x sta dlpnt+1 ldy dlend,x ;Get the index to the end of this DL lda #$00 sta (dlpnt),y iny lda #$40 ;Mode 320x1 sta (dlpnt),y iny lda ypos and #$0F eor #$0F sta temp lda #$a0 clc sbc temp sta (dlpnt),y iny lda #$1F ;Palette 0, 1 byte wide sta (dlpnt),y iny lda xpos ;Horizontal position sta (dlpnt),y sty dlend,x doneDL ;************** add DL end entry on each DL ***************************** ldx #$0C dlendloop dex lda DLPOINTL,x sta dlpnt lda DLPOINTH,x sta dlpnt+1 ldy dlend,x iny lda #$00 sta (dlpnt),y txa bne dlendloop vbloop lda MSTAT ;Wait for VBLANK to end and #$80 bne vbloop jmp mainloop ;Loop redraw NMI RTI IRQ RTI ;Pointers to the DLs DLPOINTH .byte $22,$22,$22,$22,$23,$23,$23,$23,$24,$24,$24,$24 DLPOINTL .byte $00,$40,$80,$C0,$00,$40,$80,$C0,$00,$40,$80,$C0 ;************** Graphic Data ***************************** org $a000 .byte %00111100 org $a100 .byte %00111100 org $a200 .byte %01000010 org $a300 .byte %01000010 org $a400 .byte %10011001 org $a500 .byte %10011001 org $a600 .byte %10100101 org $a700 .byte %10100101 org $a800 .byte %10000001 org $a900 .byte %10000001 org $aA00 .byte %10100101 org $aB00 .byte %10100101 org $aC00 .byte %01000010 org $aD00 .byte %01000010 org $aE00 .byte %00111100 org $aF00 .byte %00111100 ;************** Cart reset vector ************************** org $fff8 .byte $FF ;Region verification .byte $87 ;ROM start $4000 .word #NMI .word #START .word #IRQ Quote Link to comment Share on other sites More sharing options...
RevEng Posted January 1, 2015 Share Posted January 1, 2015 I assembled your code above, signed it with sign7800, and it works fine in MESS. I don't use EMU7800, but it's probably expecting the .a78 extension instead of .bin. Quote Link to comment Share on other sites More sharing options...
+Trebor Posted January 1, 2015 Share Posted January 1, 2015 When I run in emu7800, I get an error saying "ROM not recognized" I've dabbled in 6502 assembly before but still learning. What am I doing wrong? I'm pretty certain EMU7800, much like the ProSystem emulator, utilizes an external database* where an entry must be entered to recognize many ROMs properly. MESS just requires a correct header and is the most accurate regarding faithfully emulating the console timings, graphical abilities, as well as the TIA and POKEY sounds. *EDIT: See "ROMProperties.csv (the list of recognized ROM files.)" for EMU7800. Strongly recommend utilizing MESS though. Quote Link to comment Share on other sites More sharing options...
xucaen Posted January 1, 2015 Author Share Posted January 1, 2015 This is interesting.. does a real 7800 require a header? Also I tried mess (mame64.exe??) and couldn't get it to work at all. running mame64 7800aprt.bin from command line displays a help of some kind as if my command line syntax was wrong. Double clicking mame64.exe gives me an error that no rom was found. Quote Link to comment Share on other sites More sharing options...
RevEng Posted January 1, 2015 Share Posted January 1, 2015 No. a78 was invented to support emulators, since the 7800 cart hardware can vary widely, and the emulator doesn't otherwise know what hardware you're trying to use. For a real cartridge, you'd use the headerless .bin file burned to an EPROM, since you'd be the one ensuring your software matches the cart hardware. If you use a configurable flash cart like CC2, you use the .bin format since it doesn't know about a78, but you wind up passing on the same required-hardware info via it's menu configuration file. 1 Quote Link to comment Share on other sites More sharing options...
RevEng Posted January 1, 2015 Share Posted January 1, 2015 BTW, heads-up there's a bug in the source that will manifest if you extend the demo to support more than 1 sprite in any given zone - there's a missing "iny" before the end of the DL gets stored with "sty dlend,x". Because of this the second sprite's DL entry will be positioned incorrectly in memory and overwrite a byte of the first sprite's DL entry. 1 Quote Link to comment Share on other sites More sharing options...
xucaen Posted January 1, 2015 Author Share Posted January 1, 2015 No. a78 was invented to support emulators, since the 7800 cart hardware can vary widely, and the emulator doesn't otherwise know what hardware you're trying to use. For a real cartridge, you'd use the headerless .bin file burned to an EPROM, since you'd be the one ensuring your software matches the cart hardware. If you use a configurable flash cart like CC2, you use the .bin format since it doesn't know about a78, but you wind up passing on the same required-hardware info via it's menu configuration file. This is fascinating. Was there a typical or standard cart type that Atari tended to use? What about the a78sign.exe? What is that for? Quote Link to comment Share on other sites More sharing options...
RevEng Posted January 1, 2015 Share Posted January 1, 2015 The list of cart types can be found in Eckhard's 7800 Bankswitching Guide. a78sign (older) and sign7800 (newer) are tools used to calculate and embed the cryptographic signature of the cartridge ROM into the last bit of the ROM. NTSC 7800 consoles calculate this signature and compare it to the ROM's signature. If they don't match, the console throws itself into 2600 mode. In a nutshell, it's a DRM check. PAL decks don't do this same check, and instead use other heuristics to determine when to go to 2600 mode. I always assumed this was due to the old US ban on exporting crypto, but there may have been other reasons. 1 Quote Link to comment Share on other sites More sharing options...
xucaen Posted October 21, 2015 Author Share Posted October 21, 2015 Where can I find the newer sign7800.exe? The old a78sign.exe doesn't seem to work with this example or my other experiments. I think 60% of my troubles stems from that not working and me trying to change the code to make it work. ugh. Quote Link to comment Share on other sites More sharing options...
+Trebor Posted October 22, 2015 Share Posted October 22, 2015 Where can I find the newer sign7800.exe? Try the version posted here. Quote Link to comment Share on other sites More sharing options...
xucaen Posted October 22, 2015 Author Share Posted October 22, 2015 Thanks!! I also have mame64 running. I think I am on the right path. 1 Quote Link to comment Share on other sites More sharing options...
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