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From: cortez@ux1.cso.uiuc.edu (Jeff Cortez)
Newsgroups: misc.wanted,comp.sys.tandy,comp.misc,com.wanted
Subject: Re: TRS80, Model 100 Portable Questions
Message-ID: <1991Mar7.170755.12357@ux1.cso.uiuc.edu>
Date: 7 Mar 91 17:07:55 GMT
References: <1991Mar5.134533.3044@waikato.ac.nz> <1991Mar5.134902.3046@waikato.ac.nz>
Organization: University of Illinois at Urbana
Lines: 71

>	1.  There's a RAM OPTION socket inside the MODEL 100; can anyone tell
>		me what chip(s) fit in this, and what extra capacity it/they
>		will give me.

There is a 8K ram chip which Radio Shack sells which fits this socket.
I don't remember the price, but it wasn't that much.  Some third-party
firms also sold memory expansion boards which plugged into this socket,
but I don't think any of them are still in business.  Anyone else know?

>	2.  There's a ROM OPTION socket as well; what would this be for, and
>		was anything ever produced for it?

This socket is used for many programs written for the Model 100.  I use
WriteRom myself.  There are many other programs available.  I will try
to repost later with the name's of some companies.

>	3.  The BUS connector, what use is it?

The BUS connector is used to hook up the external visual display expander.
(If anyone has one and wants to sell it I am interested :-))  Besides this,
the only thing else which I know of was the Chipmunk drive which I think is
not produced any longer.

>	4.  What are the pin configurations for the phone plug and Cassete plug
>		(and has anyone used them successfully outside the us)

Would have to look at the manual for the exact pin config., but I do know
that radio shack sells a modem cable and cassette cable which allow you to
use these ports.  Of course modem cable is made for use in the US so I don't
know how well it will work elsewhere. :-)  The cassette cable though should
work fine anywhere.

>	5.  TELCOM
>		(a).  Can Telcom CALL using tones, not pulses?

Telcom does not decide what to use, the switch on the left side labeled
touch tone/pulse does for the internal modem and external modems decide on
their own.

>		(b).  Can anyone list all that you can change with the STAT
>			command, and the options for each, i.e. which letter
>			changes baud rate, parity, etc etc

You can change RS232 communication speed and setup.  Also you can change
the internal modem setup.  Again, I need to get home to see what the manual
says so I will respond later with specifics.

>	6.  BASIC
>		What other M100 specific commands (like DATE$,Day,time,IPL)
>		are there.

Most normal BASIC commands are supported.  There are some specific commands
but I would refer you to the BASIC manual (which it seems you don't have :-( )
If you want, contact me and maybe we can make a deal for getting copies of
the manual sent to you.


>This is a pretty tall order, but any help anyone can give me will be really
>gratefully accepted.

>				Thanks	- Simon

Well no order is to tall.  :-).

By the way, for all you users who have been trying to contact me direct,
make note of my new email address.  I am still checking the old one, but
not very often.

Jeff Cortez
Maintainer of the Tandy100 Archives
tandy@uiuc.edu