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RE: [N8VEM-S100:6099] Crusty's S100-8080 CPU Card



Ok,  Let us know when you get it running!

> Date: Wed, 28 Jan 2015 13:36:09 -0600
> From: litte...@mchsi.com
> To: n8vem...@googlegroups.com
> Subject: RE: [N8VEM-S100:6099] Crusty's S100-8080 CPU Card
>
> Josh,
>
> I may have not been very clear, I can do OTP's, just have
> never done them before.
>
> I'm used to the old erase and reprogram.
>
> Todd
>
> ----- Original Message -----
> From: Crusty OMO <cru...@hotmail.com>
> To: n8vem...@googlegroups.com
> Sent: Wed, 28 Jan 2015 08:29:25 -0600 (CST)
> Subject: RE: [N8VEM-S100:6097] Crusty's S100-8080 CPU Card
>
> 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....
>
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