31 Dec
2013
31 Dec
'13
6:16 p.m.
Il giorno mar, 31/12/2013 alle 16.21 +0100, Christian Corti ha scritto:
On Mon, 30 Dec 2013, supervinx wrote:
Well, referring to the images, I should terminate only the BusOut lines
on A3, or also the +DA lines on A2?
Has anyone built such a terminator?
May be it's a good idea to open the printer and look at the internal
terminator (if one is visible...)
What kind of terminator is it?
Google broken?
http://computermuseum.informatik.uni-stuttgart.de/dev/ibm_5110/technik/en/i…
Basically, you have to put pullups to all output lines. If you want to
make it better, you should consider using combinations of pullups and
pulldowns (330/220 or something like that).
The inputs on the interface are the Bus In lines, Machine Check and
IRQ2, so the other signals are output lines.
Christian