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

Damn, how do you DO that? Amazing.

I put it on the proto board, then powered it up and started poking the pins while watching on a scope to see what happened. After doing a double take of data flying out, I checked it with the die shot to make sure this is probably what was happening and sure enough the 16 ROM lines go to those 16 pins. So that was that.

I still haven't captured the data yet, I have to make a rig to do it and haven't done that yet.

I found a TMS1000 on ebay that we can all pitch in and buy

http://www.ebay.com/itm/251822939309

loool. That's as bad as the $800 D650C's some idiot was selling. Let's see what he's down to now. Oh looks like $75 now. What a deal! (not)

http://www.ebay.com/itm/Roland-TR-6..._DefaultDomain_0&hash=item3f475e7844

Even at that stupid price he sold two of the three he had in the last day. LN has one of these lined up for me to dump actually. I tried and D650C's appear to dump the same as the D553C's do- it's just the CMOS version of the same chip.

Since I have both the uPD1771C-017 and -011 parts loose here I could do it over the weekend. Just a breadboard+clock+voltage and my LA/capture code and I should be good.

Unless you've done it already?

I guess you can do it. I haven't made a rig yet. I will eventually add it to my allpro 88 when I get there. I will then verify when I dump this one that it matches your dumps.

I've done the LA grabs on both, just need to do the 5 minute code to fetch the values from the data. (no clock since I ran out of pins.)

https://twitter.com/plgDavid/status/579091482893635584/photo/1

Cheers for the test mode, you rule.

Did two LA dumps of each uPD1771C's

Since the PC wraps around I got a huge amount of similar dumps each time. (2MB total once converted to 16bit raw. and they bin diffed fine with correct framing).

Still these dumps are from decapped units, so the rom data _could_ in theory be corrupt, so verify would be good.

yes, the digital dumps are to be verified against the decaps. I suspect the decaps would have errors vs. the digital dumps. It'd be good to verify data integrity and bit ordering in the ROM arrays.

The HMCS40 games I have hooked up and have test-artwork for are fully playable now.
*edit* here's epacman2: http://imgur.com/tP0Zfy8

Other HMCS40 games will have to wait a bit for Sarayan's finished svg2lay tool.