19 Jul
2005
19 Jul
'05
5:02 p.m.
On Wed, 2005-07-13 at 10:48 -0500, Director wrote:
I would love to see pictures of the ends of the ATR
cable. I have some ATR
cards and we will be putting one on display soon but I have never seen a
cable or the wall box.
I'll see if I can grab a photo of the cable this weekend at the museum
if nobody can oblige before then...
At least one of our Apollos (either a 3000 or 3500) has a TR card in it
that consists of two PCBs fastened together, whereas the more typical
type is just a single full-length card. Whether there's anything special
about the dual board version I don't know.
In later versions of IBM token ring the wall mounted
box (MAU) did do
something, but in original IBM TR it was strictly passive.
Ahh, that was what really prompted me to ask about the wall boxes - I
worked for a software company for several years who favoured IBM TR over
Ethernet, and recalled things not being as simple as just joining
machines together as there was a rack of IBM electronics in the corner
of each room. From what others have said about Apollo TR though it
really is simple and the wall boxes are purely for cable routing.
cheers
Jules