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I've received several requests to post build information on the QB-3 I built and brought to CAX this year. I don't normally do "build" posts so sorry if the format isn't very polished. I'll kick it off posting several pics of the cab inside and out then follow up with detailed info about the...

I recently picked up one of these programmers to do some of the BPROMS that none of my other programmers do. To do the calibration/repair of the Unipak you really need one of these extenders so you can access the pots while the board is installed in the programmer. If someone has one for sale...

Which MCR games used the standard "CPU" and which use the "super CPU"? There's a difference in how the background graphics systems work so they are NOT interchangeable, does anyone know which games use which?

I'm trying to ship a boardset back to an individual in Italy via USPS. When I fill out the customs information selecting Video game parts (HS code 95043090) it gives me a warning that these goods are prohibited to be shipped into Italy. "Toys not entirely made of wood" (no joke that's the...

I've been troubleshooting a few 6502 fluke pods and in the process have determined the Fluke doesn't support adding wait states on CPU reads when the RDY signal is de-asserted. I'm looking for any boards that use this signal to support slower memories so I can validate my findings.

Looking for this panel OR someone willing to send me a few pics of the PCB top and bottom.

Anyone out there willing to snap a couple pics of the front and back of this PCB? Hopefully with enough resolution I can read the part numbers of the ICs? I would REALLY appreciate it! Specifically the main large PCB that the displays are mounted on.

Does anyone have schematics they are willing to share or possibly have one of these boards they are willing to loan or sell?

I've been working on an FPGA multi for the Exidy shooters. Wanted to see what the interest level on this was. I can either do just the kit that requires an original board set or an FPGA solution that replaces the board stack (no original boards needed) Opinions?

Working on a Crossbow and need to replace prom at 3K. Unfortunately the roms for MAME aren't valid for Crossbow as it uses a 32x8 prom not a 256x4.

I don't normally post stuff like this but standing back and looking at this I couldn't resist. Yes, it is factory. If no one figures it out I will post the answer in a couple days.

I typed a long explanation on this but by the time it was done the forum timed out and I lost it all. So I'll just post my conclusions. design flaws: 1. The compliance voltage for the 5V supply on the AR is WELL beyond normal design criteria causing excessive power/heat to be dissipated in the...

looking for flight yoke (just the yoke), thrust mechanism and cardboard monitor bezel. Help me bring this rare game back to life!

Does anyone have/know where to find this. I need the schematics for the daughter/audio/IO board NOT the mainboard (which is the same/similar to all the Midway boards)

In the process of coding the Boxing Bugs audio for the multi Cinematronics FPGA I ran across these markings on a few BB audio boards. It looks like there's a signature and a three letter initials? written with a black pen. 2 of the three boards I have show this although they look like different...

I though I read a post where someone was doing this but I can’t seem to find it now. I’m incorporating the sound into my multi Cinematronics FPGA and need a working board to test against. If I can’t borrow/buy one then I’ll prototype one up, just wanted to save time if this exists somewhere.

I just finished up implementing the Cinematronics CCPU in an FPGA. It's currently playing Star Castle, War of the Worlds, Armor Attack, Demon, Rip Off and Solar Quest. I've posted a couple vids below. I'm starting on the sound implementation now. If you would like to be added to the list for...

I just picked up a Gyruss and am trying to figure out how the original bezel/artwork was on the game. I played it quite a bit in the 80's and seem to remember some level of tinted plastic but this one is completely clear. It also has the bezel artwork pressed up against the front plastic which I...

Anyone have detailed knowledge of the speed the cine hardware draws vectors? I don't have access to a machine to scope. I'm looking for: 1. update rate of the D/A's (in Hz, possibly a range? not sure if it waits longer when a longer vector is being drawn.) 2. update rate of screen. (I assume...

My first FPGA port of an arcade game. Built in 1999 for my son that was 2 at the time. Found these surplus 6" CGA monitor for $20 ea and figured this would be a cool project for them. My son (19 now) is asking what's the NEXT mini game? Any suggestions? 23rWBNd14r8