Re: WTB: 64K cache SIMM (72-pin)
On 8/31/2018 8:35 PM, Cameron Kaiser via cctalk wrote: Trying to restore an Alpha Micro ColdFire-based system, and it's missing its cache SIMM. It works without it, but it sure would be nice. AM doesn't have much info on it but it appears to be a 72-pin 64KB SIMM (unknown speed), same keying as 72-pin RAM SIMMs. I doubt this is a custom part and ISTR that PCs of around that time used something similar. If you've got something like this mouldering in your parts drawer, please advise. Thanks! I have three devices which if I remember right were cache modules, but they all appear to be 80 pin devices. Slightly longer pins than the typical 72-pin SIMMs, fit into a vertical socket on the MB. Any chance you've got the pin count wrong? -Rick
WTB: 64K cache SIMM (72-pin)
Trying to restore an Alpha Micro ColdFire-based system, and it's missing its cache SIMM. It works without it, but it sure would be nice. AM doesn't have much info on it but it appears to be a 72-pin 64KB SIMM (unknown speed), same keying as 72-pin RAM SIMMs. I doubt this is a custom part and ISTR that PCs of around that time used something similar. If you've got something like this mouldering in your parts drawer, please advise. Thanks! -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- Heisenberg may have been here. -
RE: Lear Sielger keyboard for parts or repair (shorter link)
-Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Electronics Plus via cctalk Sent: Friday, August 31, 2018 5:04 PM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: Lear Sielger keyboard for parts or repair https://bit.ly/2N8N8Io Original link too long, I guess! Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sa...@elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
Lear Sielger keyboard for parts or repair
https://www.elecshopper.com/lear-siegler-adm-11-keyboard-for-parts-or-repair .html Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sa...@elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
Re: Thicknet/10base5 Test Segment: The Cable is In!
Yeah, Allied Telesyn/Telesis made (and still makes!) really decent hardware at a midrange price. I often recommend their gigabit and PoE switches for cost-sensitive projects, especially where management isn't really needed. Thanks, Jonathan On Fri, Aug 31, 2018 at 5:56 PM Cameron Kaiser via cctalk < cctalk@classiccmp.org> wrote: > > Allied Telesis made a "multi port tap" that provided four AUI ports off a > > single Ethernet tap. I don't know if it was a repeater/hub inside, or > what. > > It was much smaller than a DELNI or DEREP. > > Pretty sure I know the device you're talking about and I think it was > a hub internally. I liked it a lot better than the DELNI. > > Come to think of it, I liked most of Allied Telesyn's stuff. I still have > a 10Mbit hub of theirs handling the low speed systems and the 10b2 segment > going to the HP 9000, and a whole mess of the transceivers which are > periodically useful on AUI-only systems. > > -- > personal: > http://www.cameronkaiser.com/ -- > Cameron Kaiser * Floodgap Systems * www.floodgap.com * > ckai...@floodgap.com > -- #include > >
Re: Thicknet/10base5 Test Segment: The Cable is In!
> Allied Telesis made a "multi port tap" that provided four AUI ports off a > single Ethernet tap. I don't know if it was a repeater/hub inside, or what. > It was much smaller than a DELNI or DEREP. Pretty sure I know the device you're talking about and I think it was a hub internally. I liked it a lot better than the DELNI. Come to think of it, I liked most of Allied Telesyn's stuff. I still have a 10Mbit hub of theirs handling the low speed systems and the 10b2 segment going to the HP 9000, and a whole mess of the transceivers which are periodically useful on AUI-only systems. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- #include
Re: Thicknet/10base5 Test Segment: The Cable is In!
> On Aug 31, 2018, at 3:32 PM, systems_glitch wrote: > > Allied Telesis made a "multi port tap" that provided four AUI ports off a > single Ethernet tap. I don't know if it was a repeater/hub inside, or what. > It was much smaller than a DELNI or DEREP. That's not surprising. The DEC boxes were from the very early days of 10 Mb/s Ethernet, when transceivers and repeaters were large complex circuits. Remember the DEUNA? That was two hex Unibus boards, quite full of stuff. Soon afterwards all that stuff was integrated into an IC or two. Transceivers were a bit more difficult because of the analog design involved, and not everyone got it right. I remember a 10Base2 transceiver chip that would take down VAXclusters by sending garbage occasionally. paul
Re: Thicknet/10base5 Test Segment: The Cable is In!
Allied Telesis made a "multi port tap" that provided four AUI ports off a single Ethernet tap. I don't know if it was a repeater/hub inside, or what. It was much smaller than a DELNI or DEREP. That totally sounds like the one located in the Cray. My guess is most people would hook AUI transceivers but they just run ribbon cables to 4 boards then I think the 10base2 feeds into a BNC T plugged into it. - Ethan
Re: Thicknet/10base5 Test Segment: The Cable is In!
I think I've seen reports of multi AUI port taps. Correct? I think my Cray has a 4 port AUI box w/ 1 x 10base2. It has DB15 ribbons going to each of the IOSV CPU cards. Allied Telesyn might be the mfgr. -- : Ethan O'Toole
Re: Thicknet/10base5 Test Segment: The Cable is In!
Allied Telesis made a "multi port tap" that provided four AUI ports off a single Ethernet tap. I don't know if it was a repeater/hub inside, or what. It was much smaller than a DELNI or DEREP. Thanks, Jonathan On Fri, Aug 31, 2018 at 3:33 PM Paul Koning via cctalk < cctalk@classiccmp.org> wrote: > > > > On Aug 31, 2018, at 3:25 PM, Grant Taylor via cctalk < > cctalk@classiccmp.org> wrote: > > > > On 08/31/2018 01:07 PM, systems_glitch via cctalk wrote: > >> Yeah, I forget what the original allowed length was for drop cables, > but I seem to remember it striking me as quite long! A few feet of CAT5 (or > even better, STP) has a lot of wiggle room :P > > > > I think I've seen reports of multi AUI port taps. Correct? > > You may be thinking of the DELNI, a multi AUI hub. Not a repeater, > apparently. DEC also made a repeater in that era, the DEREP -- just two > ports. That may be why the DELNI was built, as a way to get more fanout > without the complexity of a multiport repeater built out of discrete > electronics. > > > Could you have one multi-port tap in a computer lab (of 5 ~ 20 machines) > and connect them all to the single tap? Sort of like what is done with > 10BaseT cables to a hub in the room? > > Yes, the DELNI allowed for that, you'd plug in up to 8 NICs and then > connect the uplink port to a transceiver. > > paul > >
Re: Thicknet/10base5 Test Segment: The Cable is In!
> On Aug 31, 2018, at 3:25 PM, Grant Taylor via cctalk > wrote: > > On 08/31/2018 01:07 PM, systems_glitch via cctalk wrote: >> Yeah, I forget what the original allowed length was for drop cables, but I >> seem to remember it striking me as quite long! A few feet of CAT5 (or even >> better, STP) has a lot of wiggle room :P > > I think I've seen reports of multi AUI port taps. Correct? You may be thinking of the DELNI, a multi AUI hub. Not a repeater, apparently. DEC also made a repeater in that era, the DEREP -- just two ports. That may be why the DELNI was built, as a way to get more fanout without the complexity of a multiport repeater built out of discrete electronics. > Could you have one multi-port tap in a computer lab (of 5 ~ 20 machines) and > connect them all to the single tap? Sort of like what is done with 10BaseT > cables to a hub in the room? Yes, the DELNI allowed for that, you'd plug in up to 8 NICs and then connect the uplink port to a transceiver. paul
Re: Thicknet/10base5 Test Segment: The Cable is In!
On 08/31/2018 01:07 PM, systems_glitch via cctalk wrote: Yeah, I forget what the original allowed length was for drop cables, but I seem to remember it striking me as quite long! A few feet of CAT5 (or even better, STP) has a lot of wiggle room :P I think I've seen reports of multi AUI port taps. Correct? Could you have one multi-port tap in a computer lab (of 5 ~ 20 machines) and connect them all to the single tap? Sort of like what is done with 10BaseT cables to a hub in the room? -- Grant. . . . unix || die
Re: Thicknet/10base5 Test Segment: The Cable is In!
> On Aug 31, 2018, at 3:07 PM, systems_glitch wrote: > > Yeah, I forget what the original allowed length was for drop cables, but I > seem to remember it striking me as quite long! A few feet of CAT5 (or even > better, STP) has a lot of wiggle room :P 50 meters, says IEEE 802.3. paul
Re: Thicknet/10base5 Test Segment: The Cable is In!
Yeah, I forget what the original allowed length was for drop cables, but I seem to remember it striking me as quite long! A few feet of CAT5 (or even better, STP) has a lot of wiggle room :P Thanks, Jonathan On Fri, Aug 31, 2018 at 3:08 PM Paul Koning wrote: > > > > On Aug 31, 2018, at 2:45 PM, systems_glitch > wrote: > > > > Yeah, you can make up your own AUI cables with less-than-spec wire and > get away with it no problem, but I was referring to NOS premade AUI cables > being a limited resource. > > > > I've made them with DA15s and CAT5 cable before, and it works for short > runs. > > That figures; the impedance is not quite the same but close enough (78 > ohms vs. 100) and AUI cable is supposed to be shielded. But there should > be a fair amount of margin. > > paul > > >
Re: Thicknet/10base5 Test Segment: The Cable is In!
> On Aug 31, 2018, at 2:45 PM, systems_glitch wrote: > > Yeah, you can make up your own AUI cables with less-than-spec wire and get > away with it no problem, but I was referring to NOS premade AUI cables being > a limited resource. > > I've made them with DA15s and CAT5 cable before, and it works for short runs. That figures; the impedance is not quite the same but close enough (78 ohms vs. 100) and AUI cable is supposed to be shielded. But there should be a fair amount of margin. paul
Re: Thicknet/10base5 Test Segment: The Cable is In!
Yeah, you can make up your own AUI cables with less-than-spec wire and get away with it no problem, but I was referring to NOS premade AUI cables being a limited resource. I've made them with DA15s and CAT5 cable before, and it works for short runs. Thanks, Jonathan On Fri, Aug 31, 2018 at 1:21 PM Paul Koning wrote: > I understand 10Base5 cable being limited, though regular 50 ohm coax > generally works fine if you work around the lack of stripes. > > AUI cable, though, that doesn't seem much of a problem. Straightforward N > pair twisted pair cable, terminated with DA15 connectors. The slide locks > are not quite common but I believe still exist in parts catalogs, and you > can do without them in any case. > > paul > > > On Aug 31, 2018, at 11:25 AM, systems_glitch via cctalk < > cctalk@classiccmp.org> wrote: > > > > Honestly? I'm worried about someone reading the list archive and hoarding > > them all away. It's a limited resource. > > > > I'll send you the link off-list. > > > > Thanks, > > Jonathan > > > > On Fri, Aug 31, 2018 at 11:18 AM Grant Taylor via cctalk < > > cctalk@classiccmp.org> wrote: > > > >> On 08/31/2018 08:04 AM, systems_glitch wrote: > >>> Excellent, glad it made it there quickly and safely! > >> > >> Me too. > >> > >>> If anyone needs AUI cables, I don't have a bunch on hand, but I can > pass > >>> on the seller I buy them from -- 1m cable, $20 shipped in the US. > >> > >> Is there any reason not to go ahead and share the information publicly? > >> > >> I know that I will eventually need to acquire some AUI cables. > >> > >> The kicker is that I had two, exactly what I need and the NICs to > >> connect them to before a cross country move that I got rid of a LOT of > >> stuff. (I keep finding out exactly how much I'm replacing. :-( No > fun.) > >> > >> > >> > >> -- > >> Grant. . . . > >> unix || die > >> > >
Re: Novapalooza in 2 months...
Bruce Ray wrote: > Really, the Nova is 50? Yup - so join us in celebrating the personal and > technical impact of this youngster.. I always found it amusing that Data General's computers were named after transitory phenomena: Nova, Supernova, Eclipse. Of course, in the grand scale of things, we all are. :-( Alan
Re: Thicknet/10base5 Test Segment: The Cable is In!
I understand 10Base5 cable being limited, though regular 50 ohm coax generally works fine if you work around the lack of stripes. AUI cable, though, that doesn't seem much of a problem. Straightforward N pair twisted pair cable, terminated with DA15 connectors. The slide locks are not quite common but I believe still exist in parts catalogs, and you can do without them in any case. paul > On Aug 31, 2018, at 11:25 AM, systems_glitch via cctalk > wrote: > > Honestly? I'm worried about someone reading the list archive and hoarding > them all away. It's a limited resource. > > I'll send you the link off-list. > > Thanks, > Jonathan > > On Fri, Aug 31, 2018 at 11:18 AM Grant Taylor via cctalk < > cctalk@classiccmp.org> wrote: > >> On 08/31/2018 08:04 AM, systems_glitch wrote: >>> Excellent, glad it made it there quickly and safely! >> >> Me too. >> >>> If anyone needs AUI cables, I don't have a bunch on hand, but I can pass >>> on the seller I buy them from -- 1m cable, $20 shipped in the US. >> >> Is there any reason not to go ahead and share the information publicly? >> >> I know that I will eventually need to acquire some AUI cables. >> >> The kicker is that I had two, exactly what I need and the NICs to >> connect them to before a cross country move that I got rid of a LOT of >> stuff. (I keep finding out exactly how much I'm replacing. :-( No fun.) >> >> >> >> -- >> Grant. . . . >> unix || die >>
Re: Thicknet/10base5 Test Segment: The Cable is In!
Honestly? I'm worried about someone reading the list archive and hoarding them all away. It's a limited resource. I'll send you the link off-list. Thanks, Jonathan On Fri, Aug 31, 2018 at 11:18 AM Grant Taylor via cctalk < cctalk@classiccmp.org> wrote: > On 08/31/2018 08:04 AM, systems_glitch wrote: > > Excellent, glad it made it there quickly and safely! > > Me too. > > > If anyone needs AUI cables, I don't have a bunch on hand, but I can pass > > on the seller I buy them from -- 1m cable, $20 shipped in the US. > > Is there any reason not to go ahead and share the information publicly? > > I know that I will eventually need to acquire some AUI cables. > > The kicker is that I had two, exactly what I need and the NICs to > connect them to before a cross country move that I got rid of a LOT of > stuff. (I keep finding out exactly how much I'm replacing. :-( No fun.) > > > > -- > Grant. . . . > unix || die >
Re: Thicknet/10base5 Test Segment: The Cable is In!
On 08/31/2018 08:04 AM, systems_glitch wrote: Excellent, glad it made it there quickly and safely! Me too. If anyone needs AUI cables, I don't have a bunch on hand, but I can pass on the seller I buy them from -- 1m cable, $20 shipped in the US. Is there any reason not to go ahead and share the information publicly? I know that I will eventually need to acquire some AUI cables. The kicker is that I had two, exactly what I need and the NICs to connect them to before a cross country move that I got rid of a LOT of stuff. (I keep finding out exactly how much I'm replacing. :-( No fun.) -- Grant. . . . unix || die
Re: Thicknet/10base5 Test Segment: The Cable is In!
Excellent, glad it made it there quickly and safely! If anyone needs AUI cables, I don't have a bunch on hand, but I can pass on the seller I buy them from -- 1m cable, $20 shipped in the US. Thanks, Jonathan On Fri, Aug 31, 2018 at 1:14 AM Grant Taylor via cctalk < cctalk@classiccmp.org> wrote: > On 06/25/2018 03:20 PM, systems_glitch via cctalk wrote: > > Anyone interested in cable can email me directly (please change the > > subject line, it'll get binned into my cctalk folder otherwise). I can > > provide any level of "kit" from just the cable to fully ready to go. I > > do have a very few NOS Cabletron ST-500-01 transceiver/non-intrusive > > tap kits as well. > > Hi Jonathan, > > I wanted to take a moment and say "Thank You!" for making it a > possibility for me to have a functional 10Base5 / Thicknet / Hosepipe > network segment. > > I received mine in the mail today. :-) > > I look forward to picking up a couple of NICs with AUI interfaces and > the requisite AUI cables to connect to the transceivers that you provided. > > If this was eBay I'd say: 5 out of 5 - I would do business with > Jonathan again. > > Thank you again. :-) > > > > -- > Grant. . . . > unix || die >
