A5200 Assembly Programming with WUDSN and MADS

[eea]

I am developing some Atari 8Bit games and want to port them to the Atari 5200.  I have all of the information I need to remap GTIA, POKEY, etc and also have a memory layout that works for 16K RAM and 32K ROM.  I have changed all of the equates and it is ready to assemble.  I haven't changed the joystick code yet, but that should be straightforward once I figure out how to actually assemble the code in a format that Altirra understands.  I'd prefer to use the awesome WUDSN and MADS combination because that is what I'm using for my Atari 8Bit development environment.

 

If anybody has developed an Atari 5200 program in this environment and can provide some tips, it would be greatly appreciated!  I have seen some sample source code that sets the cartridge boot vector at the end with:

        org     $bffd
        .byte   $FF         ;Don't display Atari logo
        .byte   $00,$40     ;Start code at $4000  (or whatever the starting address is)

 

In my failed test with WUDSN and Altirra, I added this to the end and renamed the .XEX output to .a52 to try to attach the cartridge in Altirra, but it said it was an unrecognized ROM size.

If somebody knows of a different development environment, I am willing to give it a try too, but I'd definitely prefer WUDSN and MADS.

 

Once I am able to compile and run even the simplest program, I should be able to pretty easily port my 8 bit game to the A5200.

 

Thanks so much!

 

Eric
 

[Wrathchild]

Welcome @eea, have sent you a personal message (PM).

[+JAC!]

I once did an Atari 5200 port of Alienswarm with the help of playsoft. Here are the sources for a WUDSN project that compiles to both Atari XL and Atari 5200.

 

https://atariage.com/forums/topic/224914-alien-swarm-hack-request/?do=findComment&comment=3078433