: I want to hook up an old 8088 as a dumb termianl. I have some serial cable
: but it has only four wires so I need to know which pins are essentila for use
: and which ones can be ignored. Also what kindof software do I need to run at both ends. I was thinking of kermit at the 8088 end, but I have no idea what to do at the linux end. I need it to send out and receive the login instructions.
: any help would be appreciated. If it would be easier to run minux on the 8088,
: please speak up. I only have a 20 meg drive. is that enough to run minux.
For RS232 over DB-25, pins 2, 3, and 7 are probably all you
*need*. 2 & 3 are send/recieve. 7 is a ground. You need a
2/3 swap - as both machines are DCE. This is what "null modem"
Of course you can get commercial cables that do exactly what
you want at places like CompUSA. Radio Shack sells generic
straight through cables and all the gender benders & null modem
adapters you could want.
You are running DOS on the 8088? I used to own a Leading
Edge XT, 8088 at 7.15 MHz & 20 MB hard disk, Dos 3.1. I
used to connect it to my Mac II, at 19,200 BAUD with kermit
(at both ends). However, some people have said that "an XT
can only cope with 4800 BAUD, or 9600 on a good day". Your
mileage may vary.
Kermit generally does not come on Linux distributions (like
InfoMagic). It can be obtained in source form from
Columbia(?). It compiled easily for me under Linux. You
don't need kermit under Linux, but having it on both sides
gives you highly reliably file transfer. You only need a
modem program on the "terminal" side.
The hard disk is not material. I used to have a DOS 3.1
bootable floppy with kermit on it. It had some spare space
for small downloads. My XT only used 360 KB floppies.
These days I'd add a screen saver, such as scrn (which
just blanks the screen after 15 minutes of dis-use).
There are unix'es that will run on an XT. Minix and Coherant
come to mind. I ran Dan Lanciani's OS 88 for awhile. It
booted in 512K RAM! I had two logins at one time - one
from the Mac, one on the XT's own console. Just for fun, I
printed some lables at the same time. Imagine a UNIX root
file system on a 360 K floppy.
Anyway, running UNIX on your XT will not improve it as
a terminal over DOS, if the sole application desired is
For that matter, Kermit gives you vt102 emulation, which
is quite a bit smarter than, for example, an ADM 3 dumb
terminal. Maybe I'm dating myself.
Programmer at DCCS, UPENN