It has recently been found out that on B boards 93646B-3 and 93646B-4 there is a suspected routing error for one of the pins from PAL 3.
This means that if you are doing a game conversion using on of these B boards, you cannot natively use the BGSB3G PAL chip, you will have to either lift pin 9 of the PAL and solder a wire to C13 of connector CN3 or use PAL BGSB3F, lift pin 7 and solder a wire to C13 of connector CN3.
Long ago I needed a program to interleave 2 binary files together. At the time SirMorris over at the RCM forum made one up and it did the job nicely.
Since that time, ive got into programming myself and decided to make my own program that did exactly the same thing. From then, I kept adding bits to it to make my life a little easier and focused on ease and speed of use. Its now progressed into something that I use regular when dealing with ROM’s and things.
It can:
Interleave 2 files
Deinterleave files
Split files
Swap upper and lower portions of a file
I’ve had quite a surprising number of people tell me they also found it useful which is nice.
Found this on my NSS board. It had “V3” written on a label in pen so couldnt verify if it was original or not so never submitted it to MAME.
Ive since been told my the author of the NO$ emulators that its seems to be legit.
In amongst a box of boards I had this Pang 3 on the CPS1 hardware.
The game didnt work but ended up being another dodgy motherboard. The game actually worked fine.
Going purely from the quality of the board im going to say that it is a very good bootleg of the Mitchell B board.
Its just too poor to be genuine i feel.
There is a difference to this one though.
It has been hacked to use a different C board.
The C board used in this case was from Final Fight which is nice because I regret selling mine recently so I will make up a new one.
This board also has the Mach215 security PLCC on it. I will attempt to read it out when I make up an adapter.
I have dumped the two 27c4096 ROM’s and confirmed they are not in MAME so you can find them in my downloads section if you want them for any reason.
PC18 from the Jamma+ forum was round yesterday with his Mortal Kombat 2 board which appeared to have a few little faults.
1. The game crashed just before he completed it
2. No fatalities could be performed
3. Some sound effects were missing
We fired it up on the test bench and I saw for myself the second 2 issues. We could not test the crashing issue because I’m crap and Megadrive joypads with only 3 buttons are no good for playing MK2 arcade version!
First thing we did was check the test menu DIP switch settings as fatalities can be turned off but they were set to ON.
Second, check all the ROM’s against MAME. All checked out OK.
A little bit of head scratching later we checked the boards operation against MAME’s operation. This board was running on version 1.1 and sure enough the sounds were missing in MAME too.
At this point we decided to check with Google and it turns out that in the early versions of MK2, there were all sorts missing from the game including most of the fatalities, some sounds and the endings too (might be why the game crashed at the end?).
As most of the ROM chips are for graphics we just erased the program EPROM’s and burned version 3.1 ROM’s. The game now does all sorts of stuff that it never used to do.
We still couldn’t check the crashing issue but hopefully that’s sorted too