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SubjectRe: Patch: BadRAM put to use
On Fri, Mar 24, 2000 at 04:16:58PM -0700, Val Henson wrote:

> > > I can use 61 MB out of 64 MB, which is a great result, and good for
> > > trees. My main concern regarding trees is not reuse of RAM that
> > > suffered from static electricity, but to be able to use RAM in spite
> > > of manufacturing errors; a very large portion of RAMs (95% of the
> > > production?) must now be discarded of due to such errors. Trees
> > > don't like that. Neither do I.

It may interest you to know that the venerable ZX Spectrum [1] already
employed this technique for all of its 16384 bytes of RAM. Sir Clive bought
chips with single errors, and only used the ones where the error was in
lower part of the chip (I believe). He then modified the Spectrum to only
use the upper part.


bert hubert

[1] Possibly known als a 'Timex' to US viewers

| - U N I X -
| Inspice et cautus eris - D11T'95

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