It will be faulty in other ways anyway, nobody nicks the ram and rom off a good board....
I would not bother worrying about the PLD's unless its running with graphics errors.
Normally you need a worker to go from anyway, or at least good documentation.Until I see a similar board online that's the end of the road for this board the eprom eraser needs a rest...
How are you getting on with all those boots? heheIt's a 518B but I've replaced these before with a 517B...
Hey real quick I have a street bootleg that had a transistor break off. I thought I got the right replacement, any chance you can read the part number on the transistor near the chip with a red 8 on it?
It's a 518B but I've replaced these before with a 517B...
Hi Hammy,How are you getting on with all those boots? hehe
I actually got another in recently with the 2 x 27c040's for program, got it running as usual but seems to have a dead PLD or something in the sprites area. (it runs with errors, replaced the 374's still the same)
The program was SF2RK in mame, i had forgotten it was 2 chip!
Very frustratingly I also found this image on UKVAC which is exactly the same PCB as mine but would you believe it the ROMS are covered! I did try to contact the user but it seems they're no longer active on the site. Can't tell but from the looks of the sticker it looks like this has four ROMs underneath?How are you getting on with all those boots? hehe
I actually got another in recently with the 2 x 27c040's for program, got it running as usual but seems to have a dead PLD or something in the sprites area. (it runs with errors, replaced the 374's still the same)
The program was SF2RK in mame, i had forgotten it was 2 chip!
PLA? if you are copying GAL's I assume you mean PLD, when you dumped it did it come up as blank/all FFs or something i.e protected?Of the five boards I got from you three are working two still with very minor errors one has a PLA missing U6 that I have to hot swap from another board. I tried copying a GAL but it didn't work any tips appreciated.