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Todd,
I've used 128M and 1G SD cards with success. I would say they are No-name brands. I also have a 4G that doesn't work. Just be sure to format these with FAT-16. From Windows XP, they just call it "FAT". As for the eprom, if you don't have what to program it with, I don't see how OTP's are going to be of any help. I would take Gary's offer for a programmed EPROM. I can offer an EPROM too, but shipping from Canada will cost you more. Cheers, Josh Date: Tue, 27 Jan 2015 19:09:45 -0800 From: litte...@gmail.com To: n8vem...@googlegroups.com Subject: [N8VEM-S100:6096] Crusty's S100-8080 CPU Card I've been building this board and it's about 90 % populated.
While I'm waiting for parts, I was wondering about memory. 1. For the SD Card, what is recommended size & brand ? 2. 27C256 Eprom ? My Data I/O took a shit a long time ago and I sold my NeedHams. I do Have a EasyPro 90B that will do AT27C256 but they are OTP. I'm accustomed to erasing & reprogramming, but it takes 30 mins to erase under UV light. I have many UV Eproms, but nothing to program them. They are just too old. I see Mouser has; http://www.mouser.fr/ProductDetail/Atmel/AT27C256R-70PU/?qs=sGAEpiMZZMutXGli8Ay4kN4PpSZpwfyv80jBz050W6M%3d Considering they only cost $1.98 each and are OTP, the "low cost"-vs-"erase time" makes sense. I have never used OTP, but I could buy a few and write a few and compare. Once I know my programming hardware works I could go forward.... -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to n8vem-s100+...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. |