[sdiy] RAS/CAS timing

[Tom Arnold]

On Tue, Apr 22, 2003 at 10:09:12PM -0300, fmg wrote:
> A friend sent to me several 'defunct' 286 motherboards some time ago.
> This weekend I check them and found one still functioning, then I
> used this MB to check the RAMs of the others ones and found that ALL
> are working ok. I'm planing now to build a digital delay/echo for
> audio and maybe CV/ENV with them but, and thats why I'm wrinting this,
> is there any schematic that help me to achieve the goal ?  I 'google'
> for hours without lucky.

I'm working on just such a project right now.  I had a very simple way of
solving all my timing issues.

Static RAM.

Hitachi has a several very large static RAM chips and they are fairly cheap.
Even the cache RAM off an old 386 board is quite usable.

-- 
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 - Tom Arnold -       When I was small, I was in love,                  - 
 - Sysabend   -       In love with everything.                          -
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 --------------         -- Thomas Dolby, "Cloudburst At Shingle Street" -