[time-nuts] HP 5370A to B conversion

Poul-Henning Kamp phk at phk.freebsd.dk
Fri Dec 19 13:21:36 EST 2014

In message <BLU170-W435E764ADDFE88A3A4EBEECE6B0 at phx.gbl>, Mark Sims writes:

>It's not practical to convert an "A" to a true "B" model.  They
>use a different input front end circuit.  But,  the rest of the
>machine is compatible.  The "B" firmware runs on a "A".  John's CPU
>board works on either version.

The only differene in the software is a single byte fix for an
obscure race-condition.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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