Date   : Fri, 26 Nov 2010 12:13:14 +1100
From   : plexer@... (James McGill)
Subject: Electron Ferranti ULA reverse engineering progress

Hi Ed,

Can you tell me if it has much about the 1200 baud cassette decoding
circuitry? This is something I'm interested in understanding, and
would on its own be worth picking up a copy.

Regards,
James

On Fri, Nov 26, 2010@... AM, Ed Spittles <percy.p.person@...>
wrote:
>
>
> On 12 November 2010 19:03, Philip Pemberton <philpem@...> wrote:
>>
>> (and I'm still waiting for my copy of the ULA book, bah.)
>
> Mine arrived this morning (direct from Chris
> Smith?http://www.zxdesign.info/book/?) and it looks like it has a lot of
> useful info: pictures of the cells in various generations of device,
> descriptions of the pad ring, equivalent circuits for various types of flop.
>
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