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Very nice! That's one of the games I've got on a LONG TODO list for the 32X.

Tomahomae wrote: Tue Oct 14, 2025 6:51 am asmsh.c file attached to the threadhead got an operative fix for jumpbacks.

Cool. I'll update my asmx and look into that PPC issue...

I was quite happy working with the xm-player until I hit that snag. Any idea what it could be? I guess I'll start looking at the d32xr code.


Certain SH2 chips had a bug that made it lose interrupts that interrupt other interrupts. Sega made sure none of those chips made it into the Saturn, but ...

Awesome work! It's always good to see obscure controllers get some loving.

That wasn't the only place with that error. I was just pointing out the first instance and that anything like it would need to be fixed. I'll go through it and find the others and check against the test code.

The first block of quoted code correctly checks strings. The second quoted code is the problem code that is trying to pass integers to a string function.

Any word on the PPC support? Or do you need more help finding issues?

As more feedback on the update - I haven't had any of those SQL errors since. All fine at this point.

You should be using Y0 of U8 to control the save space mapping. ROM space and SAVE space share the same map - ROM at 0x000000 - 0x3FFFFF, and SAVE at 0x200000 - 0x3FFFFF. Most of the time, you'll not be using all of save space... most flash carts only provide 32KB of save. Some more, some less. But ...

I can see one error already. Look at this code

case o_ThreeReg:
oldLine=linePtr;
GetWord(word);
reg1=FindReg(word,"O");
if(reg1==0) parm=parm|0x400;
else linePtr=oldLine;

GetWord(word);
reg1=FindReg(word,".");
if(reg1==0) parm=parm|1;
else linePtr=oldLine;


Okay... remember that if ...

Thanks. Knowing the syntax asmx uses for SH will allow us 32X/Saturn/DC folks to modify our code to work for cases where we want to use asmx instead of gas or shasm.

sh2_fixed.s - an example of gas format
https://pastebin.com/RhrBM7bB

int_m.src - hitachi assembler format (most SEGA's libs for 32X and Saturn are in this format)
https://pastebin.com/1tuKMYHw

Very nice. In case you have trouble finding it, the line goes in asmx.c at line 532 as part of the AsmInit() function.

One caveat - it doesn't accept gas syntax... or apparently old Hitachi syntax... as a matter of fact, I'm having trouble finding which syntax it's using. Maybe you can clarify that ...

There's notes on that in the 32X docs, but no, it's not reset. One of the things I do in my MD side hardware init code is clear RV and wait for the 32X side to reboot.


| wait on Mars side
move.w #0,0xA15104 /* set cart bank select */
move.b #0,0xA15107 /* clear RV - allow SH2 to access ROM */
8 ...

Very cool. Thanks.