Re: IBM 5140 - schematics?

[Tony Duell via cctalk]

On Sat, Apr 28, 2018 at 3:57 PM, Anders Nelson via cctalk
 wrote:
> Hey all,
>
> I have an IBM 5140 portable with a printer but I'd really like to use it as
> a terminal among other things. Any chance there's documentation available
> for that Centronics connector or another internal header with RS232 or
> whatever?

I've never seen schematics for this machine (and as I don't own one, I
haven't reverse-engineered it).

However there is a technical reference manual,

6280655_PC_Convertable_Technical_Reference_Volume_1_Feb86.pdf

which I think I got from Bitsavers. Page 46 and following of that .pdf
(page 2-37 and following of the original manual) give the pinout and
signals on the 'I/O Channel connector' which I think is the one you
are asking about. Looks to be pretty much the 8 bit ISA bus
signals.

It's a 72 pin connector, good luck in finding something to fit it!

-tony

IBM 5140 - schematics?

[Anders Nelson via cctalk]

Hey all,

I have an IBM 5140 portable with a printer but I'd really like to use it as
a terminal among other things. Any chance there's documentation available
for that Centronics connector or another internal header with RS232 or
whatever?

=]
-- 
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com

SPARCserver 600 PROMs

[Dennis Grevenstein via cctalk]

Hi,

I am looking for years now for bootproms for a SPARCserver 600.
I have been able to obtain 2.14 prom images and they work. This
allows upgrading the CPUs to SuperSPARC I. However, you need
2.14.3 to install faster CPUs and some slightly different 2.14.3H
to install HyperSPARC CPUs. There is a set of images going
around in archives, this it’s actually 2.14, rather than 2.14.3.
Does anyone here have prom images of 2.14.3 or 2.14.3H?

thanks,
Dennis

-- 
Don't suffer from insanity...
Enjoy every minute of it.

Re: IBM 5140 - schematics?

[Bill Degnan via cctalk]

>
> 6280655_PC_Convertable_Technical_Reference_Volume_1_Feb86.pdf
>
> which I think I got from Bitsavers. Page 46 and following of that .pdf
> (page 2-37 and following of the original manual) give the pinout and
> signals on the 'I/O Channel connector' which I think is the one you
> are asking about. Looks to be pretty much the 8 bit ISA bus
> signals.
>
> It's a 72 pin connector, good luck in finding something to fit it!
>
> -tony
>

Surprised there is no regular rs232 port

>

Re: IBM 5140 - schematics?

[Paul Berger via cctalk]

On 2018-04-28 5:00 PM, Bill Degnan via cctalk wrote:

6280655_PC_Convertable_Technical_Reference_Volume_1_Feb86.pdf

which I think I got from Bitsavers. Page 46 and following of that .pdf
(page 2-37 and following of the original manual) give the pinout and
signals on the 'I/O Channel connector' which I think is the one you
are asking about. Looks to be pretty much the 8 bit ISA bus
signals.

It's a 72 pin connector, good luck in finding something to fit it!

-tony


Surprised there is no regular rs232 port

There is an add on serial/parallel port that has a standard RS-232 port, 
they are pretty common.


Paul.