Search found 159 matches
- Sun Mar 18, 2007 7:34 pm
- Forum: Megadrive/Genesis
- Topic: Can anyone...
- Replies: 15
- Views: 13939
You might also try taking apart EA carts. I know they have some with RAM that use TTL chips for address decode. I've been mostly focusing on EEPROM support, though, since they're only 8 pins and need no battery and no battery control chip. The ones I've looked at so far are: * Acclaim 670127 with EE...
- Wed Mar 14, 2007 11:55 am
- Forum: Mega/SegaCD
- Topic: Megacd timing issues and solutions (PCM, HINT, DMA...)
- Replies: 6
- Views: 9245
Re: Megacd timing issues and solutions (PCM, HINT, DMA...)
pc=(unsigned char *) 0xFF0011;*pc=0xE2;//Stop Channel1 only pc=(unsigned char *) 0xFF000F;*pc=0x80+0x40+1;//Select channel1 pc=(unsigned char *) 0xFF000D;*pc=0x80;//Make it START at 0x8000 pc=(unsigned char *) 0xFF0011;*pc=0xE0;//Start all channels What optimization level (-O) are you using with th...
- Sun Mar 04, 2007 4:27 am
- Forum: Megadrive/Genesis
- Topic: Demoscene-style fonts
- Replies: 3
- Views: 6004
For those just looking for simple fonts, here's the two 8x8 fonts I use. The first one is a script font that I mostly ripped from the Colecovision game Kevtris, then tweaked the rest of the characters to match. The second is the standard Namco font. If you want them opaque, change the 0 to your desi...
- Wed Feb 28, 2007 5:34 am
- Forum: Sound
- Topic: how can i do music on megadrive?
- Replies: 288
- Views: 552804
ok...DAC is good but I now have a problem with all the only possibilities I saw : di / dac stuff / ei which is impossible :( A trick I learned from ColecoVision might help: When doing something that will conflict with the interrupt, set a "busy" flag. In the interrupt, if the "busy" flag is set, do...
They won't flood, it's not that kind of game. (And it would be a pain to do without lots of tile management-fu.) It's more like a Columns type of game. You make fully capped groups to score points. The bigger the group, the more points. The bombs are to let you clean out tiles that will never match ...
- Sun Feb 25, 2007 12:38 am
- Forum: Megadrive/Genesis
- Topic: Detecting the bios
- Replies: 15
- Views: 12583
I have a later model 1601 Genesis (one of the ones that didn't have the EXT port installed) and it shows the "licensed by Sega" startup screen. So apparently some model 1 units have the TMSS stuff. EDIT: I've just checked and my 1601 returns $A10001 = $A1 I don't have an older 1601 handy right now, ...
- Sun Feb 25, 2007 12:03 am
- Forum: Demos
- Topic: Mini demo / tech MD stuff posted by members :)
- Replies: 94
- Views: 81755
Here's what I've been working on. I was working on a RPG for the ColecoVision, but I was tired of the limtations of that system (not enough colors, and the impending doom of bank switching on a system with no emulator support for it). It was about 22K just for the demo with some maps, so I converted...
- Sat Feb 24, 2007 11:41 pm
- Forum: Megadrive/Genesis
- Topic: How to display DEC numbers ???
- Replies: 7
- Views: 7420
Here's one I've been using: ;----------------------------------------------------------------------- ; Convert a number from binary to ASCII decimal with leading zero suppression ; ; ENTRY: D0.W = number to convert ; A0 = 6 byte buffer ; USES: D1 = loop counter ; D2 = leading zero counter ; D3 = cur...