Updated BINman to support IPS patching (v4.6.0).
Recently needed to patch a file so though i best add it. Its not thoroughly tested but im sure bugs will be discovered in time and i will fix it.
I have a ninja spirit on my collection since more than 10 years. I play it regularly but the other day it once powered up the foreground layer had some vertical black bars crossing the screen for the complete height on the right side.
After a while also the left part started to blick glitching ( cannot be seen on the screenshot below unfortunately)
The board is an irem M72 and the background and foreground layers are handled on the bottom board. The circuit for both playfields is completely the same.
Schematics are available for Rtype which is the same hardware minus the C board.
I checked immediately the circuit which draws the foreground and decided to check a couple of TTL
With some luck I immediately found one 74ls283@10A (IC 78) which was glitching badly the left part of the screen when testing with the probe on pin 10.
74LS86@7B ( IC50)was also glitching the screen when testing with the probe on pin 6
The HP logic comparator gave me bad outputs on some pins of these TTLs.
After desoldering them I tested on my TTL tester and they were declared good!
I decided to solder back new ones to be on the safe side and to my surprise the game was fixed.
Turns out that the TTL tester didn’t catch the subtle faults of these ICs ( not Fujitsu parts!)
Not one of mine but I feel this one deserves more awareness.
https://gitlab.com/loic.petit/cps2-reverse
There are schematics and KiCAD libraries too.
I know there are others out there that have had issues with Vogatek JAMMA adapters but this is the first time ive personally had an issue.
I’ve had this Konami adapter for a few years now but never had to use it.
It had issues with the Red channel when I first used it one a Shao-lin’s Road PCB.
I physically disconnected the Red signal from the PCB but found there was a SYNC signal still present on the pin.
Using a multimeter I found that pin 14 on both sides of the adapter were shorted.
I lifted the Red pin at the adapter and found this
You can see the metal pin from the SYNC signal folded up and making contact with the Red pad once it was soldered.
You can see issues That Virtvic had with his Pacman adapter HERE
If you have recently bought any of these adapters then it may be worth your time doing some checks
Made a few small updates since the last version. Download from the usual page.
Enjoy