Search found 95 matches
- Mon Jan 30, 2012 11:14 pm
- Forum: Video Display Processor
- Topic: Double-Screen?
- Replies: 14
- Views: 12566
- Mon Jan 30, 2012 10:18 pm
- Forum: Video Display Processor
- Topic: Double-Screen?
- Replies: 14
- Views: 12566
- Sun Jan 22, 2012 9:08 pm
- Forum: Regen
- Topic: Regen 0.972 and 0.972D
- Replies: 193
- Views: 401473
- Fri Jun 24, 2011 5:04 pm
- Forum: Video Display Processor
- Topic: Anyone know much about the MD VDP (Game Gear welcome too!)
- Replies: 4
- Views: 4660
- Thu Jun 23, 2011 10:04 pm
- Forum: Tools
- Topic: VGM Music Maker
- Replies: 93
- Views: 79884
Just go into project settings, select All Configurations, and navigate to Configuration Properties, Linker, Input. Set "Ignore All Default Libraries" to Yes. Then select the Advanced heading and enter "DllMain" in the Entry Point field. Here is the import library for an older version of the Visual C...
- Thu Jun 23, 2011 12:33 pm
- Forum: Megadrive/Genesis
- Topic: Initialization Problems
- Replies: 9
- Views: 8509
I have been setting SL/RR to FF, then issuing a key off, but here are some various procedures from other games. Sonic 1 - Key off all channels, set all TL registers to 7F Sonic 2 - Key off all channels, set all registers to FF (30 through 8F) Sonic & Knuckles, Sonic 3, Castle of Illusion, World of I...
- Wed Jun 22, 2011 12:16 pm
- Forum: Megadrive/Genesis
- Topic: Initialization Problems
- Replies: 9
- Views: 8509
- Tue May 17, 2011 8:27 am
- Forum: Sound
- Topic: Okay... how DO you make OPN voices?
- Replies: 4
- Views: 4853
A technique I sometimes use is to load a recording of the intrument up in a frequency analyzer, and look for groups of evenly spaced lines around a central line. Then, set an operator to the middle frequency and another with a frequency equal to the spacing, and let the second modulate the first, an...
- Fri Jan 28, 2011 9:51 pm
- Forum: Megadrive/Genesis
- Topic: ASM: Utilising the full ASCII table, is it viable?
- Replies: 5
- Views: 4270
- Thu Oct 14, 2010 11:51 pm
- Forum: Mega/SegaCD
- Topic: Small Sega CD PCM question: sample rates
- Replies: 12
- Views: 13862
- Tue Aug 24, 2010 2:41 pm
- Forum: Megadrive/Genesis
- Topic: i wanna know how to convert bin to asm.
- Replies: 8
- Views: 8134
- Thu Aug 05, 2010 8:38 pm
- Forum: Megadrive/Genesis
- Topic: Blood Shot issue
- Replies: 10
- Views: 6599
It was using a negative value as a function table index, so I found out, using Gens' instruction logging feature, that the value was coming from that DIVU instruction, and that it was overflowing, so that the old value in the register was used, without N being set. Since there was a BMI afterwards, ...
- Wed Aug 04, 2010 8:19 pm
- Forum: Megadrive/Genesis
- Topic: Blood Shot issue
- Replies: 10
- Views: 6599
DIVU doesn't set the N flag correctly when there is an overflow. The manual doesn't tell how it should be set, so someone has to test it on a real Mega Drive. I found that putting $6D00 at location $EDEA fixes the problem. I don't know what to do about the messed up textures in the first room, though.
- Wed Aug 04, 2010 2:00 am
- Forum: Video Display Processor
- Topic: My scrolling routine is bad
- Replies: 5
- Views: 5790
On most Mega Drive sound systems, including the one just mentioned, the digitized samples sound way too broken. This was not so much of a problem in Sonic 1 and Phantasy Star IV, because the main sound engine was implemented on the 68000, with the Z80 dedicated to digitized samples, but this method ...