1 Mar
1998
1 Mar
'98
1:33 p.m.
Found in a box of stuff rescued (via a friend)..FWIW the box this
thing was in,
was IBM factory labeled... Board, measuring approx 6 in x 3 in. at the
top left is
a centronix female connector. About 3/4 in to the right, is what appears
to be a RCA
type phono jack. The part number on the board is 79F4761.. There appears
to be
two (memory?) sockets on it, one of which is empty, the other has a
label on it, that
reads as follows:
239X .STD
V0.86
92-2-27 23A7
Inscribed directly on the chip is:
-150DC
1506NOT
(copyright symbol) 1988 AMD
Can anybody clue me in on this thing?
AdvTHANKSance,
Will
1 Mar
1 Mar
5:45 p.m.
will emerson wrote:
Found in a box of stuff rescued (via a friend)..FWIW the box this
thing was in,
was IBM factory labeled... Board, measuring approx 6 in x 3 in. at the
top left is
a centronix female connector. About 3/4 in to the right, is what appears
to be a RCA
type phono jack. The part number on the board is 79F4761.. There appears
to be
two (memory?) sockets on it, one of which is empty, the other has a
label on it, that
reads as follows:
239X .STD
V0.86
92-2-27 23A7
Inscribed directly on the chip is:
-150DC
1506NOT
(copyright symbol) 1988 AMD
Can anybody clue me in on this thing?
AdvTHANKSance,
Will
Hi Will:
Just a guess, but it may be a 'pre' PC printer card.
Untill IBM decided to save a few cents, and foisted off their kluge of a
'parallel port' using a DB25 connector, it was almost 'set in stone'
that a DB25 connection was RS232 serial. The printer ports all used the
centronix connector.
(And YES, I'm still peeved at IBM for doing that.)
Chuck
--
-----------------------------------------------------------
He, who will not reason, is a bigot; William Drumond,
he, who cannot, is a fool; Scottish writer
and he, who dares not, is a slave. (1585-1649)
While he that does, is a free man! Joseph P. 1955-
-----------------------------------------------------------
(be sure to correct the return address when using 'reply')
Chuck Davis / Sutherlin Industries FAX # (804) 799-0940
1973 Reeves Mill Road E-Mail -- cad(a)gamewood.net
Sutherlin, Virginia 24594 Voice # (804) 799-5803
7:02 p.m.
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2 Mar
2 Mar
3:48 p.m.
Tim Shoppa wrote:
36, if I counted corectly....
Nope.... On the extreme right, is some kind of 4 pin connector (power?)
labeledCN1., next to it (left) is a smaller 7 pin connector, labeled CN10,
Just to the left of
that, is a 6 pin connector. labeled CN9. At the extreme left. is some type of
34 pin
(again, if I counted right) connector (maybe 1/8" thick X 1 3/4" wide), then
(l to r)
some surface mount chips, labelled as follows.
first one is
TEC
EC-A541
JAPAN
9151 E49
Next chip labelled
TOSHIBA
TMP90C04 1F
92094CZ
Followed by two more, smaller surface mounts, both labelled
JAPAN 9142
65256BLFP-121
00059990
Yup! There's a window!
Found in
a box of stuff rescued (via a friend)..FWIW the box this
thing was in,
was IBM factory labeled... Board, measuring approx 6 in x 3 in. at the
top left is
a centronix female connector.
How many conductors? About 3/4 in to the right, is what appears
to be a RCA
type phono jack.
Is there an edge connector, too? two (memory?) sockets on it, one of which is
empty, the other has a
label on it, that
reads as follows:
239X .STD
V0.86
92-2-27 23A7
Inscribed directly on the chip is:
-150DC
1506NOT
(copyright symbol) 1988 AMD
Is there a quartz window under the sticker? This sounds like this
is an EPROM containing some sort of firmware.
What other chips are on the board? Are they DIP's or surface mount or ???
Tim.
Chip (with window) is DIP, others described above. surface mount......
Again, all help greatly appreciated!
Will
9641
days inactive
9642
days old
3 comments
3 participants
participants (3)
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cad＠gamewood.net -
shoppa＠alph02.triumf.ca -
wpe＠interserv.com