Re: Okay, what did I do wrong?


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Posted by Tom A. on 9, 2000 at 1:07 AM:

In Reply to: Okay, what did I do wrong? posted by Mark Lord on 8, 2000 at 1:45 PM:

Mark,

I understand your frustration! Believe me, I've been there. As I don't have the Impress anymore, I don't have my fingerboard pinouts in front of me but it sounds like you've done the wiring correctly.

Are you sure you have the Impress monitor set to 15KHz and not 25KHz? There's a connector on the monitor board pcb to select the desired frequency. I know you have played some real arcade boards on the machine so you probably already have it set to 15KHz, just wanted to throw out an idea.

-Tom A.

: Finally got the time to piece together my MAME cab and the blasted thing doesn't work. It just gives me a blue rolling screen and a high pitched squeal. This is the way I have the VGA-to-JAMMA wired up:

: VGA pin 1 (Red) -> JAMMA pin 12 (Red)
: VGA pin 2 (Green) -> JAMMA pin N (Green)
: VGA pin 3 (Blue) -> JAMMA pin 13 (Blue)
: VGA pin 6 (Ground) -> JAMMA pin 14 (Ground)
: VGA pin 7 (Ground) -> JAMMA pin 14 (Ground)
: VGA pin 8 (Ground) -> JAMMA pin 14 (Ground)
: VGA pin 10 (Ground) -> JAMMA pin 14 (Ground)
: VGA pin 13 (H.Sync) -> JAMMA pin P (C.Sync)
: VGA pin 14 (V.Sync) -> JAMMA pin P (C.Sync)

: I have the H.Sync and V.Sync wires twisted together to get a composite sync signal. I've checked continuity and there are no cold joints. I'm using a Trident 9880 Blade3D video card and a standard res monitor (15.75KHz). My AUTOEXEC.BAT runs BLADETSR.EXE (no parameters) at startup and I have MSDOS.SYS set to BOOTGUI=0. I've also tried BLADETSR.EXE -E, but that didn't work either.

: What am I overlooking or doing wrong?

: Thanks,
: Mark




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