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So, if I'm following correctly, which I think I am. I only need to burn / replace these two chips.

Pretty sure you're right.   

Could you possibly recommend a reader / burner?

Any recommendation that I might provide would only be second-hand information so I'll defer to others who have practical hands-on experience to recommend a burner and software combination.


Scott

Not sure if this falls within the scope of this build, but there's someone working on fixes for CV-1000 slowdowns which are being added to unofficial builds as they indeed seem to improve the current emulation (despite not being an ultimate solution):

https://github.com/CoffeePope/mame-sh34/

One more question. Would this be the type of replacement chip?

Super huge ultra massive necro revival!

I've maintained a list of all the japanese style cocktail cab projects web pages that crossed my path. The OP's webpage disappeared a long time ago, but I managed to mirror it before then, so here is the mirror. Plenty of pics

http://dannygalaga.com/mirroredsites/hankin/NewPage2.htm

So, if I'm following correctly, which I think I am. I only need to burn / replace these two chips.

Thanks Scott! That clears it up a bit! Could you possibly recommend a reader / burner?

OK, after some tough Googling...lol. I found these files and got the hack to work in MAME. If I wanted this to work on a real arcade with a PCB, I'd need to burn 5 IC chips and replace them on the board correct?

You probably won't need to burn all of them.

Compare the hash on each "asteroid.zip" file to the hash of the corresponding "asteroid6.zip" file.
- If the hashes match, that ROM was not modified for the hack ==> no need to burn a replacement.
- Pretty sure the file named "asteroid6.h2" is "035144-04e.h2"and "asteroid6.ef2" is "035145-04e.ef2"

It looks like your ROMs don't have labels on them.
- Before you burn a replacement ROM, read the old one to confirm which one it actually is.
- You may want to label them with the ROM and Revision numbers/hack name for future reference.

Problem, I don't have sockets for H2 and J2....hmmm, I'm not exactly sure which ones to replace besides 035143-02. But even that one seems to be in the wrong spot...

You have a 034986-02 PCB so the locations are a bit different than originally anticipated.

If you look at your Sheet 1, Side B schematic, you'll find this section that shows that there are a different number of chips and different locations on the -01 and -02 boards.
- Looks like the PROMs at J2+K1 combine into the 035143 ROM located at C1 on your board.
- Looks like the PROMs at H2+J1 combine into the 035144 ROM located at DE1 on your board.
- Looks like the PROMs at F2+H1 combine into the 035145 ROM located at F1 on your board.




Scott

(11 Years Later...)

Nice little CNC, but I quickly outgrew it.

Last year I acquired a Genmitsu Reno 4040 and immediately upgraded it to 6040 with their X-axis expansion kit. Much better size, more capable of life-size projects.

Then of course, a few months later, I outgrew it again. I'm now upgrading it to a 6080 with a hybrid spoilboard. This should give me a cutting area within a few inches of Typefighter01's CNC.

2.5 years then turned into 11...

Life happened, projects got delayed.

But I've kept contact with Typefighter01 all this time. And I've talked to him about resurrecting this crazy project.

Problem, I don't have sockets for H2 and J2....hmmm, I'm not exactly sure which ones to replace besides 035143-02. But even that one seems to be in the wrong spot...