I recently offered to help a fellow UKVAC member out with recreating a 82S153 in a GAL16V8.
We were originally hoping to get a dump of the original chip and convert it over but we were sent a Verilog implementation.
After a couple of attempt we finally got it working and it is now available for download.
The GAL in question replaces the PLD at 7C, connected to the sound Z80 CPU.
Massive thanks to Adam over at https://ppclone.blogspot.com/ for providing his code.
Got a mates MTX512 here and noticed it has a PAL so would have been rude not to dump it.
There is the PLD listing for this PAL available somewhere on the net but not an actual JEDEC file for it.
GAL has been tested and confirmed working
Today I added 4 new PAL dumps.
The first 3 are from a CPS2 motherboard and are labelled as follows:
BGS-A2
BGS-A3
BGS-A4
These were taken from a non working motherboard and dumped using the ABI. They are untested at this point as Im not removing the pals from a known good motherboard to test so if you use these please let me know if they work or not.
The next one is something Ive been working on for a while and have put quite a lot of effort into.
It from a Sega ST-V motherboard and is labelled 315-5833.
Again, I am marking this as untested. I have tested it successfully with my 3 games which are Die Hard Arcade, Winter Heat and VF Kids. It also works with the Modbios.
Please test this one out as much as you can and let me know how it works.
Im pretty sure that it wont work with any add-on hardware but im also sure that all of that stuff came with a replacement GAL.
Today my reprint copy of Pier Solar finally arrived.
Ive been waiting a long time for this ever since missing out on the original run a while ago.
The games is a brand new RPG title for the classic Sega Megadrive/Genesis and comes on a technically impressive 64Mb cartridge.
Ive quickly fired it up and it looks great but I cant find my AV cable for the Megadrive and I refuse to play this over RF so ill wait until I get another AV lead, hopefully RCM will have one I can swipe next weekend.
Received this Plus/4 today from eBay. Sold as untested with no PSU and fully expected this to be broken.
The power supply connector is a 4 pin affair that looks similar to the C128 and Amiga but it is not. All is not lost however as if you remove the original connector it can be directly replaced with one from a C64, and that’s just what I did.
The swap was a very quick operation and to my surprise the system fired up with no issues other than some keys on the keyboard need a little more force than others.
I think the SD2IEC is also compatible but I will need an external power supply for it as mine normally plugs into the cassette port of a C64/128 for its power needs.