Post by oompa loompa on Feb 29, 2004 16:55:05 GMT -5
some of the pins on my schematic differ from the hacker's document b/c i used sega's schematic for reference, so those name appear there.
SL1 and SR1 are sound inputs that feed directly into the sega's sound mixer. like, you can hook up a mic or cd player or something and make tons o music.
YS is a wierd one. When I was experimenting with the 32x, I disconnected this line, and the vdp on the 32x couldn't render its graphics. I guess this indicated when the backdrop color is being drawn. The hacker's doc says its a video signal, but its not, its some kind of control signal.
EDCLK is the dot clock that runs at 2 times the speed (eg, 1 dot = 2 clocks)
!CE_L indicates that memory is being accessed from 0x000000-0x400000 (the cartridge memory)
!CE_H indicated that memory is being accessed in general (all memory addresses). i might have gotten CE_L and CE_H mixed up here.
CAS - i dunno. I think its a control line for VRAM. I thought that it was column strobe for dynamic memories, but there was no RAS line to go with it.
Post by oompa loompa on Mar 2, 2004 4:06:49 GMT -5
i had the schematics but i removed them b/c i was gonna make a duplicate of it in cad. i actually got the schematics from the web, but i don't remember where i got them from x.x, its like yea know, one of those things =D