Sega CD booting

Xynxyn · Post by **Xynxyn** » Tue Nov 05, 2013 8:13 am

Hi guys. I'm back and I've got a question for you.

I was looking for sega cd header. There was anything, probably done by Chilly Willy, I think. But I can't find it anywhere.

Post by **KanedaFr** » Tue Nov 05, 2013 12:33 pm

Did you look at LukeProjectCD ?
https://code.google.com/p/240p-test-sui ... gacdfiles/

Xynxyn · Post by **Xynxyn** » Tue Nov 05, 2013 2:23 pm

Thank you very much. It's probably that. I have never tested it,... is it compatible with SGDK?

Post by **KanedaFr** » Tue Nov 05, 2013 6:00 pm

It seems :
viewtopic.php?p=21348#21348

Xynxyn · Post by **Xynxyn** » Sun Nov 10, 2013 12:06 pm

Thanks. I decided to compile cube_flat for test. but I've got a problems.
First "problem" was with segacd.o in catalog "lib\", but I immediately compiled segacd.s and moved to "lib\". There was also problem with "libgendev.a", but I just copied "libmd.a" and renamed it to "libgendev.a".

But now I don't know what to do.

Code: Select all

C:/SGDK/lib/segacd.o: In function `_HBL':
(.text+0x158): undefined reference to `_hblank_callback'
C:/SGDK/lib/segacd.o: In function `_VBL':
(.text+0x168): undefined reference to `_vblank_callback'
C:/SGDK/lib/libgendev.a(memory.o): In function `MEM_init':
memory.c:(.text+0x6c): undefined reference to `_bend'
make: *** [out/romscd.out] Error 1

Should I do all these things I did before or did I do something wrong?

Stef · Post by **Stef** » Mon Nov 11, 2013 8:39 am

This is the exact problem mentionned in the other topic. bend_ is defined in the md.ld file so be sure to look in this file and modify your own ld file apropriately

Xynxyn · Post by **Xynxyn** » Mon Nov 11, 2013 4:14 pm

Where is that topic? I use files included to LukeProjectCD by author. In those there is a problem. I was searching "_hblank_callback" but, there wasn't any subroutine called " _hblank_callback". ;|

powerofrecall · Post by **powerofrecall** » Mon Nov 25, 2013 5:12 am

Kind of late, and since I don't use SGDK I don't know but isn't that a user function? Like you need your own hblank_callback() C function. i.e. the hblank vector calls that function you need to supply, so you could leave it blank.

kubilus1 · Post by **kubilus1** » Mon Nov 25, 2013 8:46 pm

I had to rename a few things in the ld files to get LukeProjectCD to work with SGDK in the Linux build stuff. I believe the "hblank" and "vblank" stuff becomes "hint" and "vint". There may have been other things as well, but that should get you started.

I remember I had trouble getting that particular demo to work with that boot code for some reason. I would be curious if you got it to work.