13 Feb
2013
13 Feb
'13
2:40 p.m.
------------------------------
On Wed, Feb 13, 2013 1:35 PM PST Cindy Croxton Electronics Plus wrote:
I have seen plenty of 8-bit and 16-bit floppy
controllers where the end
drops lower than the connectors, especially if the card is very long; it
supports the card in the case or the motherboard. Usually there is a brand
of some sort. Sorry, I can't identify it by the numbers you gave. Maybe if
you could post a pic somewhere of the front and back?
I know I have. Can't recall off the top what computers used them or if they were just
early ISA cards. But remember this seems to be an oldee. Or was it just populated
(repopulated?) with old chips? Otherwise what could be that old and mostly look like an
ISA card? What bus used 62 pins?
14 Feb
14 Feb
2:08 p.m.
I know I have. Can't recall off the top what
computers used them or if
they were just early ISA cards. But remember this seems to be an oldee.
Some original IBM 8 bit cards wee like this, so as to eet a little more
board area. I think the Monochrome display adapter was one.
This is, I beleive, the reason why the 5170 motherboard has a couple of 8
bit slots The pads are there to add the 16 bit extension connectors, but
you cna't fit some of the IBM cards if those conencotrs are present.
Or was it just populated (repopulated?) with old
chips? Otherwise what
could be that old and mostly look like an ISA card? What bus used 62 pins?
What dis the IBM System 23 uyse? From what I remember, the aexpansion
boards looked like ISA cards.
-tony
3:30 p.m.
[skirt extending below ISA fingers]
On Thu, 14 Feb 2013, Tony Duell wrote:
Many boards had a skirt that extended below the top of the ISA connector
down almost to the surface of the motherboard. You could not install
those board in slots that were lined up with chips on the motherboard.
But skirts that extended past the length of the fingers of the ISA card
edge were quite rare, and only usable on extender boards, such as
short-height cases that mounted their ISA boards to an adapter to make
them PARALLEL to the motherboard.
I know I have.
Can't recall off the top what computers used them or if
they were just early ISA cards. But remember this seems to be an oldee.
Some
original IBM 8 bit cards wee like this, so as to eet a little more
board area. I think the Monochrome display adapter was one. This is, I beleive, the reason why the 5170
motherboard has a couple of 8
bit slots The pads are there to add the 16 bit extension connectors, but
you cna't fit some of the IBM cards if those conencotrs are present.
AND, think of all the pennies that were saved in manufacturing by only
using the 8 bit connector and leaving off the other connector!
--
Grumpy Ol' Fred cisin at xenosoft.com
4331
days inactive
4332
days old
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