Home Page Forums MAME MAME TMS-09xx/1xxx thread (was New Dumps)

Kevtris tried to dump a upd774-based chip from a CV cart and it isn't looking good so far. We may need to decap one to see if there's a test mode accessible on die.
I know some CV carts use upd774 and some use upd777 (I assume both use the same core and the 777 has more rom? ram?)

LN

Yes. He is available on IRC server Efnet, channel #messdev.

sorry, I haven't checked the forum much lately; looked like interest pretty much evaporated on the micro dumping front when no one else wanted to vector the VFDs.

that and I had to get the HDMI NES adapter finished up so I did like 2 months of crunch on that getting it finished.

sean: I would've liked it if you warned me you were going to send those boards- I can't do anything with either. The D774 is some kind of ASIC so even if I do dump it, I am not sure it will be useful, and I am in the dark and don't even know how to power it up because I don't have the base unit.

What's the other board? some kind of 80 pin micro on that and it does not have a test pin at all according to the datasheet so I dunno if I can do anything with it. And being 80 pin SMD that makes it all the more tougher.

Yeah, the 'job opening' for vectoring VFDs is still unanswered. That shouldn't stop us from dumping/emulating handhelds though!

kevtris: I (not realizing that they didn't have any obvious test mode nor that we did not know the pinout) asked Sean to send you those chips (well, I asked him to send the upd774), so don't blame him, please.

LN

s'ok. not blaming anyone... just would've liked a little warning :-)

I can continue to dump/pin/photog the VFDs for the games.

I didn't realize there were vfds that needed to be vectorized. I can have a look, I'm kinda used to vectorizing stuff by now, where are they?

OG.

About the Cassette Vision stuff. I do have a base device and did quite a few recordings (from JAP RF OUT). Started the pinout, but the video output from the uPD77X itself is not simple RGB or composite, its something else that needs to be figured out.

PCB pics of the cassette vision main unit pcb and the cart pcbs are very much wanted, at this point.

LN

Already scanned. I'll try to make a blog post with everything in it.
Including videos.