Reverse engineering 161 in 1 cartridge to change Rom games
- Thread starter goguelnikov
- Start date
When I first started I found quite a few of my errors were just the 1.27mm socket pins on the dumper board needing to be resoldered. Can't hurt to try.
My errors always seem to be inconsistent. I can run the verify 2-3 times and get different numbers each time. Sometimes I'm lucky and they're just 0 across the board, but that's maybe 1/3 chips.
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xodaraP
Legendary
Just resoldered everything again - the programmer side was just used to program a C ROM that verified fine so should be ok
MD5 verification failed upon dumping the V ROM I just programmed. Going to run the PROG command again I guess
MD5 verification failed upon dumping the V ROM I just programmed. Going to run the PROG command again I guess
If you cut open any of the female connectors, you'll see a single whip design; something we stopped using in IC sockets over 30 years ago. All it takes is some flux on the male pins, and you don't have a connection. I find I need to clean the programmer often using deoxite to get it to register sometimes.
xodaraP
Legendary
I've cut into a couple of mine by accident while cutting down to size and mine are definitely dual wipe
Hmm.. I need to look into it again. I recall seeing the connector on only 1 side. I'll look at it next time I make one of these carts..
Hi, could you be explain how to solder the jwestfall69 daughterboard with the chips, with a video per example, is so hard.
Wombat
Beginner
My guess is that if you use a memory card (or a solution like the Neo save masta) you'll be able to get around this limitation. Not sure if all MVS games support the memory card however.
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GeorgeSpinner
Grand Master
I do use neobiosmastaVMC on most of my MVS PCBs. Turf Masters supports memory card, so I should be good.
Good thinking!
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GeorgeSpinner
Grand Master
That looks pretty cool. Where did you get it?I have this solution also - it is like a SaveMasta:
I'm always interested in this stuff.
You Can ping me here: https://twitter.com/NeoJamma
Hi @rewrite or @Vortex or @ArcadeTV , i have some promblems with the Usb Blaster and the Quartus II 13.0SP1, on windows 10 x64, when i need to program the altera Max, Quartus said to me that the jtag chain is broken. I use a usb Blaster clone with quartus driver, but dont work. Any solution or alternative to program the 3 altera max. I select the altera epm3256atc144-10n on quartus. I dont know if the jtag pins need a pull up resistor, the altera will be supply with 3.3 volt (with the usb Blaster, or with a arduino with 3.3 volt out). I know that we can use other software for programming the altera Max but i need a little tutorial. Or a link to buy a tested and working Usb Blaster that work on Windows 10 x64 and quartus II 13.0SP1.
I have all chips programmed, for my MVS cart, but the altera Max is the problem to make the cart.
Thanks
I have all chips programmed, for my MVS cart, but the altera Max is the problem to make the cart.
Thanks
@pluger I did not use a USB Blaster, so I can't help on that front. I followed @ack 's instructions using both openOCD and one of these guys because I was too cheap to buy one:
https://www.amazon.com/dp/B07T9CPMHT?psc=1&ref=ppx_yo2ov_dt_b_product_details
https://www.arcade-projects.com/thr...to-change-rom-games.15069/page-18#post-397200
I also used Win10 x64 if that's of any help.
https://www.amazon.com/dp/B07T9CPMHT?psc=1&ref=ppx_yo2ov_dt_b_product_details
https://www.arcade-projects.com/thr...to-change-rom-games.15069/page-18#post-397200
I also used Win10 x64 if that's of any help.
I had one CPLD that refused to be programmed by the programmer I suggested and had to use a USB blaster on it.
The USB blaster will not supply power to the CPLD/board. The VCC/GND pins on it are just used as a voltage reference. What you will want to do is hook up the USB blaster to the jtag port, then have the board plugged into and powered by an mvs motherboard. I also had a bit of a headache getting it working, as it turned out the clone I had was bad. Took a while to figure out that was the problem and not something I was doing wrong.
This was the bad one
https://www.amazon.com/gp/product/B00CAVG4JS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
This one worked
https://www.amazon.com/gp/product/B07F5H5LPZ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The USB blaster will not supply power to the CPLD/board. The VCC/GND pins on it are just used as a voltage reference. What you will want to do is hook up the USB blaster to the jtag port, then have the board plugged into and powered by an mvs motherboard. I also had a bit of a headache getting it working, as it turned out the clone I had was bad. Took a while to figure out that was the problem and not something I was doing wrong.
This was the bad one
https://www.amazon.com/gp/product/B00CAVG4JS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
This one worked
https://www.amazon.com/gp/product/B07F5H5LPZ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Interesting, this can't be shipped to CA. Figured for $9 I'd pick one up in case.
I struggled a lot with programming CPLDs. The one you'd suggested /did/ work for all of them, but it took a lot of tries of reseating the leads again and again and again in slightly different ways until they'd take, sometimes having to clean the contacts once or twice. They all reported back programmed with 0 errors in the end, but it took a lot of tries on some boards.
Out of curiosity, which one was the issue?
If the Usb Blaster dont supply the correct voltage, could be connect the vcc/gnd pins to a external power supply, per example a arduino with 3.3 V out? or the boar must be connected to a mvs board (mv-1, etc...), the mvs or aes card could be connect to another power supply (Power adapter) to the cart pins?
I order the FT232H USB, this friday i tested.