GC1000 Bidding update

[Terry Perdue]

The processor is the 3870 single-chip F8. It is possible to read the
internal ROM, but only with special equipment, as timing was very critical.
I believe that the RS-232 uP was the same identical part, and contained the
code for the both the clock and the serial interface. (Sounds like this is a
case of not being Y1.998K compliant.)

Terry
-----Original Message-----
From: Mike Morris <morris at COGENT.NET>
To: HEATH at LISTSERV.TEMPE.GOV <HEATH at LISTSERV.TEMPE.GOV>
Date: Sunday, April 18, 1999 11:41 PM
Subject: Re: GC1000 Bidding update


>I can guarantee it's not - at least in the RS-232...
>I forget - does it display the year on the front panel?
>
>I rememberer seeing a note on a unix newsgroup years ago
>that when you hook the GC-1000 to a server (requiring the
>optional RS-232 kit) and use it to set the server time
>that you should use a certain driver on it, as that
>driver masks off the year bits so they are ignored.
>I did a little research and discovered that the year bits
>are sourced off a set of dipswitches and not the radio
>signal - as I recall the unit will go up to 1998...
>
>Maybe the unit can be hardware-modified to decode the
>actual transmitted year bits and send them to the RS-232,
>but not having a manual I have no way of knowing.
>If it's in the microprocessor, we may be screwed - Heath
>was big on the Fairchild F8 line for a while, and I no
>longer have access to the development system (even if there
>was a way to read the program out of one of those chips).
>If it's not a F8 family chip then maybe there's a chance...
>
>Mike WA6ILQ
>
>At 09:14 PM 04/18/99 -0500, you wrote:
>>One has to hope that thing is Y2K compliant, huh?
>>
>>:D
>>
>>Buzz, ke0ms
>
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