30 Jul
2002
30 Jul
'02
5:24 a.m.
Hi
I'm always looking for DTL chips. Finding these
would be great. Anyone with some of these hiding
away or some old surplus board with them on it,
I'd be interested. I forget the numbers I need
but one is a open collector nand ( something like
935? but that sounds like a RTL). I'll have to make
list.
Dwight
30 Jul
30 Jul
6:56 a.m.
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12:46 p.m.
I have some very strange boards from a CNC controller
that had video and an 8080, but is made mostly of what
I think are DTL chips. All are in sockets. Send the
list, these are taking up space!
846
930
830, etc.
--- "Dwight K. Elvey" <dwightk.elvey(a)amd.com> wrote:
Hi
I'm always looking for DTL chips. Finding these
would be great. Anyone with some of these hiding
away or some old surplus board with them on it,
I'd be interested. I forget the numbers I need
but one is a open collector nand ( something like
935? but that sounds like a RTL). I'll have to make
list.
Dwight
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31 Jul
31 Jul
7:13 a.m.
--- Loboyko Steve <sloboyko(a)yahoo.com> wrote:
I have some very strange boards from a CNC controller
that had video and an 8080, but is made mostly of what
I think are DTL chips. All are in sockets. Send the
list, these are taking up space!
846
930
830, etc.
I am looking for some DTL chips to make a repro W706/W707 TTY
interface set for my Straight-8 and PDP-8/S (got *no* serial
I/O for them. :-( )
http://www.pdp8.net/w-boards/pics/w706.shtml?small
http://www.pdp8.net/w-boards/pics/w707.shtml?small
The chips there are:
W707
MC799 Dual Power Buffer (1)
MC790 Dual J-K Flip-Flop (8)
MC724 Quad Input Gate (5)
MC789 Hex Inverter (5)
W706
MC790 Dual J-K Flip-Flop (9)
MC789 Hex Inverter (6)
MC724 Quad Input Gate (5)
MC799 Dual Power Buffer (1)
Obviously, I'd rather find a real W706 and W707 than build my own, but
in the absence of any quantities of 35-year-old modules falling out of
a heretofore unknown closet, I'm forced to contemplate reproductions.
Thanks,
-ethan
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9:13 a.m.
I will look through the boards and see what I can come
up with. I swear half of the chips on the boards (and
there are about 10) are 846's, though.
--- Ethan Dicks <erd_6502(a)yahoo.com> wrote:
--- Loboyko Steve <sloboyko(a)yahoo.com> wrote:
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I have some very strange boards from a CNC
controller
that had video and an 8080, but is made mostly of
what
I think are DTL chips. All are in sockets. Send
the
list, these are taking up space!
846
930
830, etc.
I am looking for some DTL chips to make a repro
W706/W707 TTY
interface set for my Straight-8 and PDP-8/S (got
*no* serial
I/O for them. :-( )
http://www.pdp8.net/w-boards/pics/w706.shtml?small
http://www.pdp8.net/w-boards/pics/w707.shtml?small
The chips there are:
W707
MC799 Dual Power Buffer (1)
MC790 Dual J-K Flip-Flop (8)
MC724 Quad Input Gate (5)
MC789 Hex Inverter (5)
W706
MC790 Dual J-K Flip-Flop (9)
MC789 Hex Inverter (6)
MC724 Quad Input Gate (5)
MC799 Dual Power Buffer (1)
Obviously, I'd rather find a real W706 and W707 than
build my own, but
in the absence of any quantities of 35-year-old
modules falling out of
a heretofore unknown closet, I'm forced to
contemplate reproductions.
Thanks,
-ethan
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10:08 a.m.
on 31/7/02 3:12 PM, Ethan Dicks at erd_6502(a)yahoo.com wrote:
I am looking for some DTL chips to make a repro
W706/W707 TTY
interface set for my Straight-8 and PDP-8/S (got *no* serial
I/O for them. :-( )
http://www.pdp8.net/w-boards/pics/w706.shtml?small
http://www.pdp8.net/w-boards/pics/w707.shtml?small
The chips there are:
W707
MC799 Dual Power Buffer (1)
MC790 Dual J-K Flip-Flop (8)
MC724 Quad Input Gate (5)
MC789 Hex Inverter (5)
W706
MC790 Dual J-K Flip-Flop (9)
MC789 Hex Inverter (6)
MC724 Quad Input Gate (5)
MC799 Dual Power Buffer (1)
The MC7xx were RTL, not DTL. Motorola made them. They typically used a 3.6
volt power supply, like the Fairchild uL9xx RTL series of the same era (late
'60s I think).
Arlen Michaels
1:15 p.m.
--- Arlen Michaels <arlen(a)acm.org> wrote:
on 31/7/02 3:12 PM, Ethan Dicks at erd_6502(a)yahoo.com
wrote:
> I am looking for some DTL chips to make a repro W706/W707...
The MC7xx were RTL, not DTL. Motorola made them.
They typically used a
3.6 volt power supply, like the Fairchild uL9xx RTL series of the same
era (late '60s I think).
Ah. I stand corrected. RTL, then. I have a couple of MC8xx chips,
but no MC7xx chips.
-ethan
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6 comments
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participants (5)
-
ard＠p850ug1.demon.co.uk -
arlen＠acm.org -
dwightk.elvey＠amd.com -
erd_6502＠yahoo.com -
sloboyko＠yahoo.com