[time-nuts] Z38XX PFORTH interpreter question

[Magnus Danielson]

On 06/20/2013 06:49 AM, Don Latham wrote:
> If you aren't sure a number is needed, put<number>  <word>  <.>   If a
> number is needed, one will be on the stack, and the . will just pop
> nothing. If the number is not needed, . will simply pop the unused
> number. The stack will be left clean in either case. If I remember
> right, that is . . .

For the cal command, I already know it needs a word.

Cheers,
Magnus

> Don
> Mark C. Stephens
>> Also Murray,
>>
>> Warning! don't attempt to run cal with an empty stack, it will go into a
>> negative loop forever and you will have to reboot the clock to get
>> control again.
>> I haven't found cal in the words on a Z3815A but is present on the Z380x
>> series.
>>
>>
>> -marki
>>
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Magnus Danielson
>> Sent: Thursday, 20 June 2013 6:45 AM
>> To: time-nuts at febo.com
>> Subject: Re: [time-nuts] Z38XX PFORTH interpreter question
>>
>> Hi Murray,
>>
>> On 06/18/2013 04:10 AM, Murray Greenman wrote:
>>> Hi,
>>> Has anyone made further progress in understanding the PFORTH commands?
>>
>> I have figured out roughly what most of them do, but then again it is
>> fairly obvious from their name.
>>
>> cal performs tempco calibration and you should put the length of your
>> calibration time on the stack to let it know how many seconds you want
>> to run.
>>
>> 100 cal
>>
>> will run calibration for 100 seconds (far to short).
>>
>>> I find with my Z3815A (with an E1938A hockey puck oscillator
>>> installed) that the command 'puck' returns:
>>>
>>> a= -6.305066e-13 b= 0.000000e00 a/d = 1.600000e+01 puck communication
>>> is alive puck warm= 1 puck EFC ADC err= 0
>>> status1 byte= 1
>>> status2 byte= 0
>>>
>>> What fun! I wonder what the three variables are and can one change
>>> them?
>>
>> Cool!
>>
>> Will look at that command then.
>>
>>> As a separate but related question, I've just swapped out a failed MTI
>>> 260 OCXO from this Z3815A and fitted in its place the older E1938A
>>> hockey puck. The problem I have is that the EFC sense seems to be
>>> reversed. Does anyone know how to change this, either by sending a
>>> PFORTH command or otherwise? It would be great to get the Z3815A going
>>> again.
>>
>> I will have to look at that. So many things is tuneable under the hood
>> that it should be possible to fix.
>>
>> Will have to wire up my Z3815A and fire it up.
>>
>> Cheers,
>> Magnus
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