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The damned thing still refuses to do 1. It doesn’t need to be pin-compatible, although that would be nice. Easy enough to work up a simple adapter.
If no, you may find that a standard 1. Even more interesting is to datashet a SRAM, write the contents and then do a warm boot.
MCUmall EPROM BIOS Chip Burner Forum – toc
I find the hands-on work, including the debugging, to really get this information across to all levels of students. Actually, it’s abut as you know it uses the early K motherboard. According to the schematic that I have, pin 1 is connected to pin 27 check this with an ohmmeter and labeled A Install the program attached to this post http: One more comment in the form of an actual answer: I see from an earlier post that you are using a ‘dual’ drive.
Hey Chuck, Do pin 22 of u18 and u19 need to remain connected to their original mother board conections, or should they be isolated before connecting them to pin 3 of u13? But now I can feed it my Everex mfm card so I can get around it.
However, it struck me that you must be spending a lot of time getting them to the point where they understand what they’re hooking up, and why.
29c256 datasheet pdf
This question appears to be off-topic. The 29C eeproms arrived datawheet, so I’ll try it out and give results, for those interested. Specifically, it should be reasonably priced, reliable, easily available and likely to remain so. I don’t think you can do much better than Futurlec http: There probably is–I’ve certainly done this with 28C64s on things such as disk controllers. You could then brick your BIOS just like the big boys They have a good price.
AT29C256 – 29C256 256k 120ns CMOS Flash Memory Datasheet
Close enough–pin 1 on the 28C is A14, while on the 27C it’s Vpp. The bios works, buy the at still refuses to employ 1. Again, not a difficult mod. What does “refuses to do” actually mean?
Well, I suppose technically they’re the same chip inside but just in a package that doesn’t allow erasing, but yes, it’s certainly confusing and misleading and I often read about folks who thought they’d ordered a UV eraseable and got an OTP instead; that’s why I mentioned it.
Then, you wouldn’t even have to remove the chips from the sockets Yes, I booted a with it with its ROM chips removed. I used two of these as adapters.
Just a simple pin swap–between 1 and I’m also assuming that we don’t care about Datadheet since we won’t be programming it in place? Ellen Spertus 2 9 Though replacing the stock ibm one gave me kb functionality, i would like 1. Not much luck though, any suggestions on who still carries them? It is a little cheaper in price, and also in stock.