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Well, I found the Microvision ROM pics quickly, so I uploaded them: www.seanriddle.com/mvroms.7z

I don't have ROM pics of Blockbuster, Mindbuster or Phaser Strike, which are ones that Kevin dumped.

I only have O Output PLA pics of Blockbuster and Vegas Slots.

I don't have instruction PLA pics of any of the chips.

As I get time, I'll put together O PLA and instruction PLA pics.

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hap Offline
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Cool, thanks =)
this will take a while to verify :P
http://pastebin.com/yRhEua73

A couple of weeks ago, I have already obtained the O PLAs for Pinball, Blockbuster, Bowling, Vegas Slots.
The microinstruction PLAs for Pinball, Blockbuster, Bowling is the default one (tms1100_default_mpla.pla, matching TI documentation). I couldn't read the one for Vegas Slots but we can assume they all use the default microinstruction set.

On another note, the MESS driver for Coleco Total Control 4 is uploaded: http://git.redump.net/mame/tree/src/mess/drivers/tc4.c

Last edited by hap; 02/20/15 12:24 AM.
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Nice!

I forgot that I had put some of those image on my web site before. I agree that the games probably all use the default instruction PLA. And the games likely wouldn't display properly if the output PLAs were wrong. My guess is that I just looked at the OPLAs on the dice and told Paul which game used which. I checked the ROMs several times, but as you know, it wouldn't be too surprising if there were a few bit errors.

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Am I correct in assuming that Kevin's Microvision dumps were done electronically, and those games were never decapped? (As I recall, he was only able to dump the earlier TMS1100 revisions this way.)

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Yes.

Sean decapped Blockbuster, though.

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Yeah, Kevin was able to dump the B-revision chips. On the E-revisions, he could only get the lower 7 bits, and he didn't get anything from the G-revision chips (or TMS1400s).

My notes show that he dumped Blockbuster, Phaser Strike, Mindbuster and Vegas Slots. I decapped Blockbuster and Vegas Slots.

I had tried dumping the chips electronically using the info in the patents and never got it to work. Kevin started with the patent info and tweaked it until he got it to work. He told me a couple of years ago that he had an idea to get all the bits off the E-revision chips, but I don't know if he's worked on it any more.

We now have a die shot of the G-revision chip (and TMS1400s), so he might be able to figure out how to modify his method to work with those.

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Entex Baseball (1) has a TMS1000 labeled MP0914; this one is dated 7949.

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hap Offline
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Ok, looking forward to the decap and pinout info =)

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Interesting, so they ended up using different chips after all.

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I've checked the Microvision roms, and only found 1 error:

seaduel_raw.bin, offset $66A, change $AA to $AB.
(for seaduel.bin, this maps to offset $5F9. oldval $50, newval $70. newcrc="77a8f71b")

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