a classiccmp electronics project?

From: vrs <vrs_at_msn.com>
Date: Fri Jul 30 19:26:51 2004

> OK. I was thinking about the microcode ROMs in an HP9810 (somethign that
> _I_ am working on, and those are most certainly 'hit' as soon as INIT is
> deaseserted and the microocde program counter starts to change. I prefer
> to think of general-purpose solutions (i.e. somethign that will replace
> every 256*4 ROM), rather than soemthing that works only in specific
> machines under specific circumstances.

I must not be getting it, somehow.

Why can't you just use a 45ns or 55ns 27c256 or 27c512 and swizzle the
pinout? These are around $3 per chip, and seem to meet the requirements.

    Vince
Received on Fri Jul 30 2004 - 19:26:51 BST