I am an EE looking for the EPROM image of prom #40
(the lower one) on the CP-07 board of a MV Junior.
I managed to wipe mine, before I realized that I
did not have a good image of it. Bonehead move,
I had previously imaged all of the EPROMs in the whole
machine, for a rainy day, and that day has come.
Unfortunately, EPROM#40 is a 27c256, while all the
rest of the EPROMs are 27128's -- When I previously
imaged the EPROM#40, I only read out half of it! -
I wish I had paid more attention.
So, to make a long story short, I need an image
of #40 on CP-07. This is called the "ladder software"
EPROM, (it ruins the ladder logic CPU on the CP-07)
I will trade / share all of the other roms that I imaged
for this, and I am willing to help others repair/give advice
on the MX-2 (I have spent a TON of time reverse engineering
the dam thing thanks to Yaskawa's totally-closed mouth
nature of tech support)
I have a Matsuura MC 500V2 VMC with an MX2 controller with a CP-07 board. The machine has a problem. However, if you think the images in the proms of this machine are useful to you, I'll be happy to give them to you. You will have to tell me how to take images of an EPROM
All the best