[Xastir] Thanks for the info !

[Bob Donnell]

Anyone else remember the MicroColorComputer?  That was Curt's programming
platform, if I recall right.  I recall the group of packeteers in Seattle
being amazed that it had enough horsepower to do the receive job.  

Of course, Curt, being a typicall not-excessively-funded college student was
making work what he had access to.  He also wire-wrapped a clone of the GLB
Electronics PK-1 TNC.  I've no idea (truthfully!) where he got the EPROM
image to run it though. 

Reminds me of someone's tag line I saw not too long ago - something like:
Engineers:  Making what we can get do what we want.

-----Original Message-----
From: xastir-bounces at xastir.org [mailto:xastir-bounces at xastir.org] On Behalf
Of Kurt A. Freiberger
Sent: Wednesday, June 25, 2008 2:22 PM
To: Xastir - APRS client software discussion
Subject: Re: [Xastir] Thanks for the info !



Curt, WE7U wrote:
> On Wed, 25 Jun 2008, Chris Moulding wrote:
> 
>> Many thanks, Bob for your detailed clear explanation of the situation 
>> regarding modems. It looks like my best option is to find a suitable 
>> KISS modem circuit to convert the data on transmit and receive. It 
>> would also make it compatible with all APRS programs.
> 
> FWIW my first entry into packet was an XR2211 hooked to a radio's 
> speaker jack and a uP interrupt pin.  I coded the receive routines and 
> interrupt handler in assembly, ran them inside a Forth interpreter.

Damn, that's hard core!!!!

Hmmm, wonder if there's a VMware image for Forth?


I also computed the CRC16.  I wouldn't recommend doing
> it that way, but it did work.  That was on a 0.79MHz 6803 as I recall.  
> I didn't do transmit on that setup, only receive.  That was in early 
> '85 I think.
> 
> All of that is taken care of if you start with a KISS TNC.  The 
> Tracker2, the OT1+, the TT4, and the TNC-X can all do it for very 
> small $$.  Some of them may be able to do 300 baud as well.
> 

-- 
Kurt A. Freiberger     Austin, TX	kurt at badgers-hill.net
Amateur Radio Callsign WB5BBW  		AIM Handle: WB5BBW
        "Reputation is what other people know about you.
            Honor is what you know about yourself."
         - Lois McMaster Bujold - "A Civil Campaign"
_______________________________________________
Xastir mailing list
Xastir at xastir.org
http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir