[time-nuts] Rom Expansion for HP5370B

[Bruce Griffiths]

Poul-Henning Kamp wrote:
> In message<466FDFC184A3469EAC08EEE5EE36CDBE at hm.clpa.com>, "Bob Camp" writes:
>
>    
>> Is the CPU strictly an I/O machine or does it do any of the timing for the
>> counter?
>>      
> All the counting is hardware.
>    
Not so for the 5370A (was this changed for the 5370B?), the 16 bit N0 
counter length is extended in software when and if required.
> Basically the CPU arms, waits, reads registers, does math, puts on
> display and sends display over GPIB if asked to.
>
>    
Bruce