Search found 2985 matches
- Fri May 02, 2008 7:56 am
- Forum: Sound
- Topic: how can i do music on megadrive?
- Replies: 288
- Views: 552539
Why is there a need for such thing ? Additional timing ? Oh - just for frequency scaling. One way is to use two bytes. The low byte acts as the float part and the upper byte is the whole part. Just add the whole part/byte to the wave/sample pointer. That way you don't have to store multiple samples...
- Thu May 01, 2008 9:04 pm
- Forum: Megadrive/Genesis
- Topic: Question topic
- Replies: 17
- Views: 14919
I saw normal cartridges failing to run on the 32x (one Sonic 3D cart from a friend doesn't run on the 32x with good video while without it it's all OK, while normally Sonic 3D doesn't get affected). Simply you can't expect a non-32x game running with the 32x attached. Same goes with the Sega CD, do...
- Thu Apr 17, 2008 10:45 pm
- Forum: Megadrive/Genesis
- Topic: Mega Drive Research and Development Center
- Replies: 27
- Views: 23183
I checked and ASMX is MRI compatible, so don't worry. However it's missing DCB and macro parameters don't seem to work properly :/ (what, it only accepts one parameter per macro?). Hence Ninja Fight didn't assemble with it. Well, it IS open source. When a problem is found, it can be looked into. Wi...
- Thu Apr 17, 2008 6:47 am
- Forum: Megadrive/Genesis
- Topic: Mega Drive Research and Development Center
- Replies: 27
- Views: 23183
So there was Basiegaxorz. I forgotten where the page was :P Now I can make examples for it too... through a lot of the examples in the page are already built-in instructions. I guess that most of the Basiegaxorz examples (at first at least) will have to do with handling the FM channels, ability it ...
- Wed Apr 16, 2008 7:07 am
- Forum: Megadrive/Genesis
- Topic: Mega Drive Research and Development Center
- Replies: 27
- Views: 23183
Not a bad start. I would add these to the tools: 68K BASIC: BasiEgaXorz - http://devster.monkeeh.com/sega/basiegaxorz/ 68K and Z80 assembly: asmx - http://xi6.com/projects/asmx/ 68K C/C++: uclinux gcc 4.1.1 - http://www.uclinux.org/pub/uClinux/m68k-elf-tools/tools-20061214/ SH2 C/C++: KPIT GNU Tools...
- Wed Apr 02, 2008 5:47 am
- Forum: Regen
- Topic: Old Regen pages
- Replies: 547
- Views: 774712
- Tue Apr 01, 2008 6:03 pm
- Forum: Regen
- Topic: Old Regen pages
- Replies: 547
- Views: 774712
- Mon Mar 24, 2008 6:20 pm
- Forum: Megadrive/Genesis
- Topic: Learning ASM
- Replies: 13
- Views: 12698
You use an assembler for assembly language. There's the old SNASM assembler that many folks use. I think more folks here are using asmx. http://xi6.com/projects/asmx/ You can use any editor you're comfortable with to write the assembly files. As for example code, you'll have to look around. The demo...
- Mon Mar 24, 2008 5:56 am
- Forum: Megadrive/Genesis
- Topic: Learning ASM
- Replies: 13
- Views: 12698
That Sega2F doc... it has a bunch of things mis-aligned (like values in tables), and has a lot of missing pages, the PDF version is better (but heavier in file size) and it's here on the forum somewhere... EDIT: there it is...: http://www.spritesmind.net/_GenDev//forum/viewtopic.php?t=227 This is t...
- Sun Mar 23, 2008 11:21 pm
- Forum: Megadrive/Genesis
- Topic: Learning ASM
- Replies: 13
- Views: 12698
Some things to read... http://en.wikipedia.org/wiki/Motorola_68000 http://www.tigernt.com/onlineDoc/68000.pdf http://srf50194.ld.infoseek.co.jp/asm/mc68000.shtml http://www.math.unipd.it/~mezzetti/ROME68000/Manual/Tome0/toc.html Once you understand how the 68000 works, then you want to read about th...
- Fri Mar 21, 2008 1:54 am
- Forum: Tools
- Topic: Tomsoft Sega Kit released
- Replies: 9
- Views: 15282
Downloaded, verified, and uploaded to RabidSwear.TmEE co.(TM) wrote:if anyone has managed to DL, would that one be kind enough to host it somewhere as the traffic on that site seems to be insane...
http://rapidshare.com/files/101118000/SegaKit.zip.html
- Wed Mar 19, 2008 6:10 pm
- Forum: Sound
- Topic: 68000 ram access from z80 ?
- Replies: 41
- Views: 36875
I always thought it was because 68000 bank access by Z80 was done through the IO chip (the only chip which got access to both complete data buses) it maybe affects the timing of banking access, bad data can be read if the read cycle is shortened And maybe it doesn't affect carts with faster roms. S...
- Mon Mar 17, 2008 6:43 pm
- Forum: Sound
- Topic: 68000 ram access from z80 ?
- Replies: 41
- Views: 36875
- Mon Mar 17, 2008 6:40 pm
- Forum: Regen
- Topic: Old Regen pages
- Replies: 547
- Views: 774712
Hi, For people using Linux, I have uploaded the Linux version. Tell me how it goes. stay safe, AamirM Holy crap! That's slow!! It runs Sonic 3 slower on my 2.4 GHz X2 than my PSP. :shock: Maybe something is wrong with the way the timing is handled. Really??? Runs fine on my pentium 1.6 Ghz. I'll ll...
- Mon Mar 17, 2008 5:23 am
- Forum: Sound
- Topic: 68000 ram access from z80 ?
- Replies: 41
- Views: 36875
I take it the DMA has priority to the 68000 bus over the Z80. You could try splitting the DMA into smaller pieces to give the Z80 a better chance at bus cycles. You want larger DMAs to minimize the overhead of setting up the DMAs, but too big and they hold everything off too much. You could experime...