PDP-11/84 (KDJ11-B) and Error 61

[Mike Ross]

On Wed, Feb 3, 2016 at 2:28 PM, Jerome H. Fine <jhfinedp3k at compsys.to> wrote:
>>Ulrich Tagge wrote:Hi Glen,
>
>> [Snip]
>>
>> List/change parameters in the Setup table
>>
>>     A - ANSI Video terminal (1)          0=No,   1=Yes  = 1
>>     B - Power up  0=Dialog, (1)=Automatic, 2=ODT, 3=24  = 1
>>     C - Restart   0=Dialog, (1)=Automatic, 2=ODT, 3=24  = 1
>>     D - Ignore battery                   0=No,   1=Yes  = 0
>>     E - PMG 0-(7) 1=.4us, 2=.8, 3=1.6, 4=3.2,...7=25.6  = 7
>>     F - Disable clock CSR                0=No,   1=Yes  = 0
>>     G - Force clock interrupts           0=No,   1=Yes  = 0
>>     H - Clock  0=Power supply, 1=50Hz, 2=60Hz, 3=800Hz  = 1
>
>
> Does anyone have an idea as to how the choice of the 800Hz
> option was made?

I wondered about that too and blinked twice when I saw it. I could
only think of some aerospace or military application derived from
doubling a 400Hz power supply frequency... or maybe some lab
application that needs that clock...

Mike

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