Re: LZ: f-term and wavpak


[Prev][Next][Index][Thread]

Re: LZ: f-term and wavpak



On Mon, 30 Sep 1996, Josh Franta wrote:


> SAM STAUFFER wrote:
> > 
> > -> I was wondering could you make a program like f-term on the 92 for
> > -> zshell?  I know fargo isn't out yet and nobody has used it or f-term
> > -> so don't flame me on that.  But is it possible to make a
> > -> communications program for zshell that can hook up to a modem through
> > -> the link port?
> > 
> > Yes, but how would you hook up a modem to the link port you need DTR
> > RING etc... etc... pins and such, Anyone know?
> 
> You could use TIs graph-link, which works because it has a TTL to RS232
> converter (IC?) in it to communicate w/serial port of a computer. Just
> plug this cable into modem and you're set.. That chip is why you can't
> use TI's software with a $4/$5 link cable, and why the grph link is so
> expensive. This method works...I've used it for fterm on fargo.


Or, quite simply, just wire TX and RX through to the TI-85 .. a plain 
dumb terminal (which is all you can really expect within reason) doesn't 
need to worry about CD and RING and all of that other good stuff, it 
really only has to worry about TX and RX .. the next fun part is 
implementing a shift register or UART in software, but hey, if my c64 can 
do it.. ;)


Of course, when only passing TX and RX you have to do the sa,e kind of 
wiring stuff that you have  to do with 25->9 pin connections sometimes, 
to wit, wire the modem's MR to the modem's TR, etc, etc, so to the modem 
it seems like the other end is using all 25 pins when it's really only 
using 2.


dreamer


References: