[volt-nuts] HP3458A calibration memory backup

[Poul-Henning Kamp]

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In message <BLU170-W25AD7ABFFDEFA96E92F6FCCEEB0 at phx.gbl>, Mark Sims writes:

>The HP3458A MREAD command returns a 16 bit value as a decimal
>integer.  The 2kB cal SRAM is only 8 bits wide and the values are
>returned in the high byte.  On two of my machines the low byte is
>always B9 hex.  One the other one (earlier serial number) it is
>always FF.

I belive that depends on what happened previously on the data-bus
of the M68K cpu.


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