Manual for MAI DT4315A

[Stefan Nuernberger]

I recently acquired a MAI Systems DT4315A terminal, 1993 model.
Unfortunately the internet does not reveal much useful information about
it. I'm searching particularly for the manual. Maybe someone out there
still owns a copy of the document and likes to share. Thanks.

Stefan

[Andrew Buckeridge]

These may be a bit like older
Televideo tvi910 or tvi920 or
LSI adm3a or adm3a+.

On Fri, 19 Sep 2008 20:38:26 +0200

Post by Stefan Nuernberger
I recently acquired a MAI Systems DT4315A terminal, 1993 model.
Unfortunately the internet does not reveal much useful information about
it. I'm searching particularly for the manual. Maybe someone out there
still owns a copy of the document and likes to share. Thanks.
Stefan

[Stefan Nuernberger]

Post by Andrew Buckeridge
These may be a bit like older
Televideo tvi910 or tvi920 or
LSI adm3a or adm3a+.
On Fri, 19 Sep 2008 20:38:26 +0200

Post by Stefan Nuernberger
I recently acquired a MAI Systems DT4315A terminal, 1993 model.
Unfortunately the internet does not reveal much useful information about
it. I'm searching particularly for the manual. Maybe someone out there
still owns a copy of the document and likes to share. Thanks.
Stefan

Thanks for the reply but I don't think those devices are quite related.
As I wrote the MAI DT4315A was manufactured 1993 so it should be quite a
bit newer than he TeleVideo or LSI. However I managed to gather some
important information on the device.
First it uses 220V current. I assume that is not quite common in the US
so this is a device maybe manufactured exclusively for Europe. There is
a MAI DT4315 (without the "A") that maybe resembles the 110V US Version.
This Document [1] has some useful information on the 4315. Strangely
they call it "BASIC FOUR-4315".

- It's a Dual Universe terminal with two RJ45 serial host ports and one
RJ45 printer port
- It supports VT100 Emulation
- Supported formats: 80 x 25, 80 x 30, 132 x 25, 132 x 30, 132 x 36
- Black on White / White on Black modes
- The terminal menu can be accessed through [CTRL]+[ESC]
- The host port is switched through [ALT]+[ESC]

Pin Assignment for the Host Ports
PIN -> Signal
1 TXD
2 Signal Ground
3 RXD
4 Signal Ground
5 DSR
6 Signal Ground
7 DTR
8 Signal Ground

(Does this pin assignment adhere to some standard?)

The keyboard uses a 4P4C (RJ9/RJ10) connection like a telephone handset.
I don't know the pin assignments for this, but that should not be a
problem as long as the original keyboard is working.

This information should be quite sufficient to get the device hooked up
and working. A complete manual would be nice anyway ;)

[1] http://www.bcpsystems.com/support/matrix/Fibs/4315.txt

[legalize+ (Richard)]

[Please do not mail me a copy of your followup]

Post by Stefan Nuernberger
First it uses 220V current. I assume that is not quite common in the US
so this is a device maybe manufactured exclusively for Europe. There is
a MAI DT4315 (without the "A") that maybe resembles the 110V US Version.
This Document [1] has some useful information on the 4315. Strangely
they call it "BASIC FOUR-4315".

It was very common for terminal manufacturers to OEM their terminals to
other companies. The other companies put their branding on the case,
but it was manufactured by the original equipment manufacturer (OEM).

[p***@gmail.com]

MAI did not use X/Open curses where codes could be compiled and optimised for the terminal based on a spec in a database. They were hard coded in the OSBBII kernel. For this reason they supported the compact tvi91X like codes only. Also the serial ports only ran at 9600 bit/s. OEMs had to provide firmware with this emulation. They had a Unix like BOSS/IX which did have termcap which did not optimise or compress. They also had mainframe like BOSS/VS along with their existing paying customers.