trs-80 model 100 telnet
Luc Tardif
How can I connect a TRS-80 model 100 to a Linux or
FreeBSD box over a serial line?
Cable:
Standard db25-db25 null-modem with the following pinout:
1 - 1
2 - 3
3 - 2
4 - 5
5 - 4
6,8 - 20
20 - 6,8
7 - 7
Linux or FreeBSD configuration:
I have the following line in my /etc/ttys:
ttyd1 "/usr/libexec/getty std.1200" trs100 on secure
where "trs100" is defined as:
trs100|Radio Shack Model 100:\
:am:bs:le=^H:li#8:co#40:ku=^^:kd=^_:kl=^]:kr=^\:up=\EA:\
:nd=\EC:ho=\EH:ce=\EK:cd=\EJ:cl=\EE:xt:cm=\EY%+ %+ :\
:so=\Ep:se=\Eq:al=\EL:dl=\EM:
Note that when I replace "trs100" with "wy50", I can
login with my Wyse terminal without any problems,
using the same cable as above.
TRS-80 Model 100 configuration:
This is where there's most likely a problem. The machine
is in great working condition, but I have very little
experience using it (objectively, none at all). Anyways,
all I've managed to do is select "TERMCOM" menu and type
"term". This seems to do something, but it doesn't return
any form of login or anything at all. It just stalls there
and I need to BREAK to return to the TERMCOM prompt. What
is the proper procedure to get a login prompt? Should I be
playing with the DIR/ACP or ANS/ORIG switches on the left
side of the Model 100 (what are they for anyways?)? Is
there any reading material I should consult which could
be of assistance?
Thanks,
Marc
Bill Marcum
Luc Tardif wrote in message ...
The switches only apply to the internal modem, not the RS-232 port.
"DIR/ACP" selects direct connect or acoustic coupler, and "ORIG/ANS"
selects originate or answer mode. To set the TELCOM program for 1200
bps, give the command "Stat 58N1E" ("Stat" is the F3 key. If you
don't see labels above the F keys, press "Label".) For more information
about the Model 100, go to www.the-dock.com/club100.html.
The Model 100 serial port can go up to 19200 bps (98N1E) if the host
system is set for xon/xoff flow control, but without good flow control
the screen can barely keep up with 1200.
David J Firth
XT DB25 serial port, save the gender difference.
: experience using it (objectively, none at all). Anyways,
: all I've managed to do is select "TERMCOM" menu and type
: "term". This seems to do something, but it doesn't return
: any form of login or anything at all. It just stalls there
: and I need to BREAK to return to the TERMCOM prompt. What
: is the proper procedure to get a login prompt? Should I be
The basics are that you select TELCOM, which is the M100 terminal emulator
(a kind of stripped VT52 emu). Select STAT and enter the code for the baud
rate, word size, and handshaking. Enter TERM to begin terminal session.
Stat codes for common M100 uses are:
STAT bwpis,d
where b (baud): M = Internal 300 bps modem
3 = 300 bps via RS232
5 = 1200 bps via RS232
6 = 2400 bps via RS232
8 = 9600 bps via RS232
9 = 19.2K via RS232
w (word) 7 or 8
p (parity) I, O, E, or N
i (stop) 1 or 2
s (status) E = Enable xon/xoff hanshaking
D = Disable xon/xoff handshaking
d (dial) 10 = 10 pps for modem dial
20 = 20 pps for modem dial
Example: 9600N81 over RS232 with xon would be: STAT 88N1E,10
2400E71 over RS232 w/o xon would be: STAT 67E1D,10
300E71 over modem with xon would be: STAT M7E1E,10
: playing with the DIR/ACP or ANS/ORIG switches on the left
: side of the Model 100 (what are they for anyways?)? Is
: there any reading material I should consult which could
: be of assistance?
Tells the M100 whether the round modem port is connected to a phone line
directly (DIR) or via acoustic coupler (ACP). ANS/ORIG sets answer or
originate tones for the internal modem. Neither have any effect on the
RS232 port.
The baud rate used in TELCOM is a problem if you will be scrolling the
display. The LCD refresh rate is approx 600 bps, which makes 2400 bps and
higher communications sessions seem to drop characters if text is scrolling.
Your best source for info is Club 100 and the Club 100 listserv:
http://www.the-dock.com/club100.html
My web site (url in sig) is geared towrds the NEC variant of the
Kyocera-based laptops, but some of the info is easily adapted for the M100.
Good luck.
--
--
Dave Firth Mac Powerbook 160
djf...@gcfn.org Think Different
http://www.geocities.com/djfirth/ Reduce-Reuse-Recycle
Leonard Erickson
That's "TELCOM" not "TERMCOM.
At the screen where you have the "term" label on the function key, you
need to hit the STAT function key, and then set the COM parameters. The
format is "Stat rwpbs" where:
r = bit rate
M = internal modem at 300 (all other values use the RS-232 port)
1 = 75
2 = 150
3 = 300
4 = 600
5 = 1200
6 = 2400
7 = 4800
8 = 9600
9 = 19200
w = word length
6 = 6 bits
7 = 7 bits
8 = 8 bits
p = parity
E = even
O = odd
N = none
I = ignore (sent paity will be zero, recieved will be ignored)
b = stop bits
1 = 1 stop bit
2 = 2 stop bits
s = XON/XOFF status
E = XON/XOFF handshaking enabled
D = XON/XOFF handshaking disabled
Given your reference to "std.1200" you probably want either "Stat 58n1e"
or "Stat 57e1e".
Note that while the 100 can use rates up to 19200, the scrolling
restricts it to 1200.
> What is the proper procedure to get a login prompt?
Try hitting the Enter key a few times. You should get a login prompt.
> Should I be playing with the DIR/ACP or ANS/ORIG switches on the left
> side of the Model 100
No.
>(what are they for anyways?)?
They are for the internal modem. ANS/ORIG selects between Answer and
Originate mode. DIR/ACP selects between the "direct connect" cable
(plugs into a phone jack) and the Acoustic Coupler (has a pair of rubber
"cups" that fit onto the handset of a standard desk phone). Both plug
into the same connector on the 100, and the switch determines which set
of pins on it are active.
Club 100 sells direct connect cables.
> Is there any reading material I should consult which could
> be of assistance?
I've got a *stack* of "almost new" Model 100 manuals. Both the full
sized manual and the "pocket sized". Make me an offer.
--
Leonard Erickson (aka Shadow)
sha...@krypton.rain.com <--preferred
leo...@qiclab.scn.rain.com <--last resort