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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 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 [EMAIL PROTECTED] 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 [email protected] http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir _______________________________________________ Xastir mailing list [email protected] http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
