Hi Kirk, and welcome!!! Bought time you made it over here!
Yes, your message came through...the Stella list is notoriously sporadic.
:)
Hmmm...I haven't been to the dig in a while, so I don't know what works,
what's broken, or why. But try compiling the attached .bin using DASM.
It's a test program that I use that is very slightly modified from Nick
Bensema's original "how to draw a playfield" demo. The command line
should look like the following:
dasm batdemo.asm -f3 -obatdemo.bin
You can use z26 (best emulation, IMHO) or stellax (better developer
tools, maybe) for developing against. Are you still in the Boston
area? If so, I can lend a hand when you need to run with real hardware.
Take care,
-Chris
On 22 Jun 2002 KirkIsrael@xxxxxxxxxxxxx wrote:
>
> Hi there...
> Just signed up...some might recognize me from rec.games.video.clasic.
>
> I've decided I'd really like to try to port JoustPong to the 2600.
> It should be (relatively) easy: 2 players, one ball, no background
> to speak of.
>
> (I've already written it in VB, Java, and PocketC for Palm.)
>
> So I'm a pretty experienced high-level programmer, but without
> a lot of low level experience (except from when I used to pour
> over corewar...)
>
> My very baby steps haven't been going so well.
> I found a copy of DASM 2.12 (why are so many "dig" links busted?)
> but have yet to compile a working BIN...I'm not sure if I have
> the most proper vcs.h file or not.
>
> And I've noticed that a lot of the Dig's Bin's don't work at all
> on some emulators, like Cracker's "another"...is there any opinion
> on which is the safest one to develop against? (I suppose at some point I should give in and get the hardware that'll let me dump to an actual VCS)
>
> Finally, I haven't received any messages this evening...has it been
> quiet, or did I not subscribe as well as I'd hoped? (I hope this gets
> through...)
>
> Thanks,
> Kirk
> --
> KirkIsrael@xxxxxxxxxxxxx http://kisrael.com
> "I believe that Ronald Reagan will someday make this country
> what it once was. . . an artic wilderness." --Steve Martin
>
>
> ----------------------------------------------------------------------------------------------
> Archives (includes files) at http://www.biglist.com/lists/stella/archives/
> Unsub & more at http://www.biglist.com/lists/stella/
>
>
; Disassembly of ..\stellax\roms\batdemo.bin
; Disassembled Tue Apr 30 23:36:39 2002
; Using DiStella v2.0
;
; Command Line: C:\DOCUME~1\CHRISW~1\MYDOCU~1\ATARI_~1\TOOLS\DISTELLA.EXE ..\stellax\roms\batdemo.bin
;
processor 6502
include vcs.h
VSYNC = $00
VBLANK = $01
WSYNC = $02
COLUPF = $08
COLUBK = $09
CTRLPF = $0A
PF0 = $0D
PF1 = $0E
PF2 = $0F
CXCLR = $2C
SWCHB = $0282
INTIM = $0284
TIM64T = $0296
ORG $F800
START:
SEI
CLD
LDX #$FF
TXS
LDA #$00
LF807: STA VSYNC,X
DEX
BNE LF807
LF80C: JSR LF82A
JSR LF81B
JSR LF848
JSR LF88A
JMP LF80C
LF81B: LDA $83
STA COLUPF
LDA $80
STA $81
STA COLUBK
LDA #$01
STA CTRLPF
RTS
LF82A: LDX #$00
LDA #$02
STA WSYNC
STA WSYNC
STA WSYNC
STA VSYNC
STA WSYNC
STA WSYNC
LDA #$2C
STA TIM64T
LDA #$00
STA CXCLR
STA WSYNC
STA VSYNC
RTS
LF848: LDA INTIM
BNE LF848
STA WSYNC
STA VBLANK
LDY #$08
LDX #$17
LF855: LDA LFF00,X
STA PF0
LDA LFF18,X
STA PF1
LDA LFF30,X
STA PF2
LF864: INC $81
INC $81
LDA $81
STA WSYNC
STA COLUBK
DEY
BEQ LF874
JMP LF864
LF874: TXA
BEQ LF87D
DEX
LDY #$08
JMP LF855
LF87D: LDA #$02
STA WSYNC
STA VBLANK
LDX PF0
LDX PF1
LDX PF2
RTS
LF88A: LDX #$1D
STA WSYNC
LDA SWCHB
AND #$08
BNE LF8A5
DEC $82
BPL LF89F
LDA #$02
STA $82
DEC $83
LF89F: STA WSYNC
DEX
BNE LF89F
RTS
LF8A5: INC $80
LDA SWCHB
AND #$01
BNE LF89F
LDA #$00
STA $83
JMP LF89F
LF8B5: .byte $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
.byte $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
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LFF00: .byte $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$20,$20,$70,$F0,$F0
.byte $F0,$E0,$E0,$C0,$80,$00,$00,$00
LFF18: .byte $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$10,$10,$11,$3B,$7B,$FF
.byte $FF,$FF,$FF,$FF,$FF,$FF,$7C,$30
LFF30: .byte $00,$00,$80,$80,$C0,$C0,$C0,$E2,$E2,$F2,$FA,$FF,$FF,$FF,$3F,$9F
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