ADM-3A Lower case ROM issue

[Jörg Hoppe]

Am 14.12.2016 um 20:13 schrieb Steve Hatle:
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> -------- Original Message --------
> Subject: Re: ADM-3A Lower case ROM issue
> From: Jörg_Hoppe <j_hoppe at t-online.de>
> Date: Wed, December 14, 2016 9:00 am
> To: cctech at classiccmp.org
>
>
> By accident, I just now restored an ADM3 (not the "A")!
> Lowercase ROM was made with an pin-rearranged 2706 EPROM.
> Additional RAM was inserted, DIP switches were set: works perfectly.
>
> However, with lowercase ROM installed and DIP switches set, but extra
> RAM missing,
> the Space "0x20" was displayed as a " ` ".
> So I think you have an RAM issue.
> Perhaps cleaning the socketed extra RAM helps?
>
> Joerg
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> ----
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> Thanks - that sounds like my symptoms exactly. I'll check out the RAM.
>
> Steve
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> Well, there you go. The sockets for two 2102 RAM chips are empty!
>
> Anybody have a couple of these guys they can spare, or a quick pointer
> on where to buy them?
I got mine from Bulgaria:
http://www.ebay.de/itm/311745516883

Joerg

>
> Thanks all, esp. Joerg for the tip!
>
> Steve
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