| Electronics > Repair |
| Vintage chip Programmer : " Micropross ROM 3000U " |
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| Vince:
--- Quote from: Zoli on October 31, 2022, 02:22:06 pm --- --- Quote from: Vince on October 31, 2022, 09:47:52 am ---... - It's got two serial ports at the back , DB25, for I/Os. ... --- End quote --- My suspicion: one serial is for computer communication, one for terminal communication; so it would be worthwhile to check for Tx activity on the ports during startup. --- End quote --- Stupid me, thanks for pointing the elephant in the room ! :palm: I guess the bigger the elephant the harder it is to see..... OK will do some probing soon, stay tuned ! >:D |
| Vince:
--- Quote from: Paceguy on October 31, 2022, 03:39:45 pm ---Matthieu Benoit may not have anything on his site concerning Micropross, but he may know someone who could be of help to you. I believe that he has a fairly wide network of contacts with people who are into programmers. --- End quote --- Yeah, probably ! We will soon find out, as I already e-mailed him a couple hours ago, and pointed him to this thread. 8) |
| PaulAm:
At that era serial display terminals were quite common. Today you would just use a comm program on a pc, of course, but they were pretty rare in those days. Looks like it was probably a pretty pricey item when new. |
| capt bullshot:
--- Quote from: Paceguy on October 31, 2022, 11:01:27 am ---Hi Vince, I would highly suggest that you contact Matthieu Benoit at matthieu.benoit.free.fr. He has much info on older eprom programmers and could be of help to you. I too have picked up a couple of vintage programmers and Matthieu has been of great help. I believe that yours is not a stand alone one and has to be linked to a computer. Good luck with your project! --- End quote --- Well, that name rang some bell ... Yes, it's the place where I used to find some useful information about my ALL-03 porgrammer: BTW - Vince: I enjoyed your teardown pictures. Afair, the 6502 doesn't have an internal Xtal oscillator, so IMO there's a dedicated oscillator (might be as simple as some '04 gate) for the 8MHz and the 1.8432MHz baudrate crystals. No need to place the crystals near the 6551 and 6502 chips. |
| Vince:
Good point Cap'tan about the oscillator..... I already got a reply from Matthieu Benoït, that was quick ! Sadly not much info. He says : 1) used to know someone who knew these programmers well, but the e-mail address he had for him doesn't appear to be valid/working any longer. Also he added that this person was really really really old... so chances he passed away sadly, taking valuable information with him for eternity, bummer !! 2) He does remember these particular programmer very well himself. He can vividly remember a particular shop in Paris, back then, that had two of these very programmers, along with documentation and disquettes. He chose not to buy one because he found them too bulky... even back then ! :-DD He gave me the name of the shop and the town, which is near Paris. The name of the shop rings a bell, think it's quite well known, probably still exists today, will check and try to contact them about it ! You never know your luck... maybe they have some stuff related to it still in an old box hiding somewhere under a desk, or someone remember something about it... I bet whoever worked in that shop back then, is long retired or dead, but maybe before doing so, they passed some knowledge to the next generation of staff, who knows... worth a shot ! But as he says, given that these were French / local, chances are there are still some French people alive today that live somewhere, and could help. The challenge is of course to FIND these people ! :-DD |
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