National Semiconductor 48-bit and 56-bit ECC polynomials

Eric Smith spacewar at
Fri Nov 18 00:09:37 CST 2016

On Thu, Nov 17, 2016 at 7:54 PM, Al Kossow <aek at> wrote:

> MFM?


> If nothing else, there are a few domestic
> 8466 chip pulls on eBay for $13 that maybe you could decap or push a
> bitstream into.

A DP8466 by itself won't help, because the ECC polynomial gets loaded into
it by another processor.

A DP8496 or DP8497 has the polynomial hardwired.

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