Recent content by mikey

I contacted Jian from buyicnow about a year ago, and he said that the 26L6420 with the SOP44 adapter is a drop in replacement for 42 pin, 16bit eproms. It requires 44 pins to program, but just 42 when being read. He is able to program them before shipping as well, which is probably necessary as...

Hey guys. Just wondering if anyone knows what pin on the DL-1625 (the CPS2's custom 68000) is the halt pin? I would like to add a pause switch to the A board, but can't find any pinout info since it's a custom variant. Thanks!

Anyone have a spare manual for Eight Man AES? A buddy of mine is looking for one. Will need to be mailed to Canada. Thanks!

Thanks for the info and pointers so far guys, appreciate the help. As for 27C322's, they can't be used as drop in replacements for V roms because they are 16bit only, and V roms need to be 8bit. In order to use one as an 8 bit rom, you would have to add a few components and do a fair bit of...

Hey everyone. Just wondering if anybody can lend me a hand with verifying this, letting me know if I'm doing it all completely wrong, giving pointers etc. Basically, I'm trying to develop an adaptor for the 29F032 to conform to the standard DIP42 package like a 27C322 would use. The point is to...

Just wondering what the general consensus is on some of the third party controllers out there, specifically for SNES and Genesis (6 button). I have read lots of really mixed reviews on the various ones available, and just wondered if anyone here has tried any of them out and can offer some good...

Not sure what kind of cable you're using for the A/V, but it's possible there's an issue with the grounding in it. If the video or audio are not grounded, they will likely not work or have some sort of issue, especially if connected to two different inputs. If you have a multimeter, check to see...

Stereo mod is really easy, you just solder to these pads with the yellow box around them, and you get line level stereo output. Sounds awesome in stereo!

Looks like one of the Japanese revisions uses socket 33 for one of the program roms, which must be under the C board. This is also verified by the MAME set kodj. I don't see any that use 34 though, and I don't see a MAME dump that uses 34 either. I don't think the type of board you have...

Found this listing on Kijiji. Seems like some alright deals on complete AES games. Hopefully someone can take advantage of this. Not sure if the guy will ship them though. http://www.kijiji.ca/v-old-video-games/ottawa/neo-geo-games/1035538344?enableSearchNavigationFlag=true

For the pseudo stereo circuit? I used this one: Here is a perfboard layout for it I drew up: The light blue lines are jumpers, and the black lines are traces under the board. Here is a parts list for the project as well: Group Name Value Part # Quantity...

I grabbed this Amiga SC1224 hoping it would be a good RGB monitor for my workbench, but when I got it home and powered it up, the power LED came on but CRT itself didn't seem to do anything. It makes a buzzing kind of noise whenever it's on, and if the speaker is hooked up, when you turn up the...

I have a 1942 board that isn't working. It was fine before I moved, now it doesn't display anything when I power it up. I noticed that the power LED on my supergun was dim when this particular board was plugged in. I tested the board and found that the 5v line only has 68ohms of resistance to...

Here are all the pictures he sent me. He included the pics of the volume trimpot because he said it's not working properly and he had to attach a wire to make it function. It just needs to be replaced probably.

I tried it with an LM1881 as well but got the same results (shaky picture). Do you wire up the 1881 the same way you would for a sync cleaner (like the image from gamesx I included here)? Or do you have to change some components? I read on another forum posting that you have to use an 820k...