--------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECH00003 Date: 08/10/97 From: KRIS O'SHEA Time: 06:15pm \/To: CHARLES MILLER (Read 3 times) Subj: Re: RG58 ? -=> Quoting Charles Miller to Luis Manterola <=- Hi! > Hi Kris! > > KS> I have some coax which is labelled RG58. Is this suitable for BNC netwo > KS> cards ? Do BNC cards take 50 Ohm or 75 Ohm connectors ? I can never > KS> remember! > > It's fine, RG58 and 50 Ohm terminators. > CM> RG58A/U is recommended.. RG58 is not quite up to spec. Well, the cable I have is actually labelled : '6058 DEARBORN RG 58/U COAXIAL CABLE (A)' Do you know what the maximum length of this sort of cable is ? I have about 30 metres of it, terminated in 50 Ohm BNC connectors. Cheers. Kris >:-> ... A clean desk is a sign of a cluttered desk drawer. --- FMail/386 1.22 * Origin: What's The Story BBS +44 (0)1903 536481 24Hrs 2:441/50 (2:441/50) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECH00004 Date: 08/12/97 From: GEORGE FLIGER Time: 07:16am \/To: MIKE BILOW (Read 3 times) Subj: Re: RG58 ? On 10 Aug 97 05:59pm, Mike Bilow wrote to Charles Ring: MB> Charles Ring wrote in a message to Mike Bilow: CM>> RG58A/U is recommended.. RG58 is not quite up to spec. [much deleted for my cutsey reply] MB> You must solder the connectors MB> onto stranded coax, and most network technicians these days MB> would have no clue how to solder something. I beg your pardon! George CNE4 ... "This won't hurt, I promise." --- Via Silver Xpress V4.4P [Reg] * Origin: Chipper Clipper * Networking fun! (1:137/2) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECH00005 Date: 08/13/97 From: MIKE BILOW Time: 06:14am \/To: LEE ARONER (Read 3 times) Subj: Transfer stops occasional LEE ARONER wrote in a message to MIKE BILOW: JL> I'm having problems with my two-card network (both are SMC JL> 8003EP:s). While testing file transfers, it goes well for a MB> Are you by any chance hanging either card on IRQ 7? If so, change it. LA> Is that because of the default LPT1 assignment to that IRQ? Yes, but also because IRQ 7 is the dumping ground for all transient IRQs that are too short for the controller to identify. -- Mike --- * Origin: N1BEE BBS +1 401 944 8498 V.34/V.FC/V.32bis/HST16.8 (1:323/107) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECH00006 Date: 08/13/97 From: MIKE BILOW Time: 06:15am \/To: LEE ARONER (Read 3 times) Subj: Transfer stops occasional LEE ARONER wrote in a message to MIKE BILOW: JL> No... but what makes IRQ 7 that special? MB> Two things. First, it is often assumed to be owned by LPT1 MB> even if it is not. Second, it is the dumping ground for MB> transients on other IRQ lines which are shorter than the rated MB> recognition time, so IRQ 7 will frequently be signalled to MB> software if some card on another IRQ is defective. LA> Wow! What an interesting tidbit. Explains a lot of odd little LA> things over the years....Is this the default behaviour of the PIC? Yes, and it has always been documented as such. -- Mike --- * Origin: N1BEE BBS +1 401 944 8498 V.34/V.FC/V.32bis/HST16.8 (1:323/107) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECI00000 Date: 08/13/97 From: TOM MOELLER Time: 06:58pm \/To: MIKE BILOW (Read 3 times) Subj: Transfer stops occasional Mike Bilow wrote in a message to LEE ARONER: MB> Second, it is the dumping ground for MB> transients on other IRQ lines which are shorter than the rated MB> recognition time, so IRQ 7 will frequently be signalled to MB> software if some card on another IRQ is defective. LA> Wow! What an interesting tidbit. Explains a lot of odd little LA> things over the years....Is this the default behaviour of the PIC? MB> Yes, and it has always been documented as such. Thanks for the note - I just looked in my 1985 Intel databook for the 82C59A and here's the paragraph you describe: "If no interrupt is present at step 4 of either sequence (i.e. the request was too short in duration) the 82C59A-2 will issue an interrupt level 7. Both the vectoring bytes and the CAS lines will look like an interrupt level 7 was requested." The sequence they're referring to is the handshaking between the PIC and the microprocessor... 1. IRQ line goes high 2. PIC 'evaluates' the request and drives INT line to CPU 3. CPU sees the INT line, and pulses the INTA* line to the PIC 4. PIC chooses highest priority IRQ and does housekeeping until... 5. CPU pulses INTA* line again, during which the PIC writes a data byte 6. Cycle is done Thanks again for pointing something out. Engineers (not necessarily Novell Engineers) like to know electronics trivia - sometimes it comes in useful! } Tom --- * Origin: The Engineer's Studio BBS || Saratoga, NY (1:267/14) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECI00001 Date: 08/09/97 From: SCOTT PARKS Time: 11:51pm \/To: DAVID MASON (Read 3 times) Subj: 3Com 3C509 Problem David Mason wrote in a message to Rune Johansen: DM> The machine I want to use the NIC in /isn't/ EISA so would DM> it matter if the EISA config on the other machine isn't set? You can't set what you don't have ... unless I misunderstood? Scott Parks sparks@helix.eskimo.com --- GEcho 1.11+ * Origin: Helix BBS - Support National Public Radio (1:343/70) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECI00002 Date: 08/09/97 From: JONATHAN HUNTER Time: 02:00am \/To: MIKE BILOW (Read 3 times) Subj: Internet Via Network? Hello Mike! 14 Jul 97 16:14, Mike Bilow wrote to Greg MacLellan: GM>> nope, i live in kingston, ontario, so does he. it's through GM>> the cable company's internet service. MB> Be aware that you need to apply some updates to OS/2 if you want it to MB> operate as a DHCP client, and all cable modems need DHCP. Knowing MB> this may save you a great deal of frustration. Hmmm. My cable modem runs with Linux (it's never known anything else), and AFAIK Linux doesn't support DHCP? I do know that whatever IP address I tell Linux the modem has, then that's he IP address the modem uses (after I reset it; it can't change without resetting!) Jonathan ... Man who fishes in others' holes often catches crabs. --- FMail 1.02 * Origin: Ninja BBS - 0161 283 1098 - http://www.ninja.ml.org/bbs/ (2:250/182) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECI00003 Date: 08/13/97 From: WILLIAM HARGRAVE Time: 01:59pm \/To: KRIS O'SHEA (Read 3 times) Subj: Re: RG58 ? Hello Kris! On Sunday August 10 1997 at 18:15, Kris O'Shea wrote to Charles Miller: KOS> Well, the cable I have is actually labelled : KOS> '6058 DEARBORN RG 58/U COAXIAL CABLE (A)' KOS> Do you know what the maximum length of this sort of cable is ? I have KOS> about 30 metres of it, terminated in 50 Ohm BNC connectors. Oh, < 200m. You can probably get much more, but it's out of spec. .......................................................................... Will --- FMailX32 1.22 * Origin: wth@pinpoint.craybbs.co.uk (2:254/211.20) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECJ00000 Date: 08/12/97 From: NEIL CROFT Time: 07:17am \/To: MIKE BILOW (Read 3 times) Subj: cd-roms and drive letters Hiya Mike, On 08-08-97, whilst lying in the gutter of the information super highway, I heard Mike Bilow whispering to Neil Croft about cd-roms and drive letters, TK>> You CAN do that with OS/2. With Toronto Virtual File System. TK>> With that, your CD-ROMs can be linked as directories on one TK>> virtual drive. And it's possible to share that drive on your TK>> network. It's great. I had a copy of this knocking around The Pillarbox for ages which I'd tried once and only managed to get a c: full of pdumps and popuplogs with. I grabbed a new copy for a totally different reason (problems with my home intranet server) andgot it working first time. MB> TVFS.ZIP 451K 1-31-97 THE TORONTO VIRTUAL FILE SYSTEM IS AN MB> VERSION 2.10 Available from Hobbes as TVFS210.ZIP which is where I got it from. /| / neil.croft@pillarbox.coracle.com / |/eil =o) 2:250/410 @ fidonet http://osiris.sunderland.ac.uk/~ca5cru/fido/pbox.html --- * Origin: The Pillarbox BBS +44-1709-517224 (2:250/410) --------------- FIDO MESSAGE AREA==> TOPIC: 193 LAN Ref: ECJ00001 Date: 08/13/97 From: WILLIAM HARGRAVE Time: 10:50pm \/To: MIKE BILOW (Read 3 times) Subj: Re: throughput Hello Mike! On Tuesday August 12 1997 at 07:47, Mike Bilow wrote to Michael Fox: MB> It is more common to see switching hubs on 100 Mbps than on 10 Mbps, MB> but it is still awfully expensive. If you need the speed, then you MB> pay the money. It's the silly administrators who think upgrading everything to 100Base-TX will solve all network problems, when a properly planned network taking into account traffic demands and usage, could save a lot of money and disruption. .......................................................................... Will --- FMailX32 1.22 * Origin: wth@pinpoint.craybbs.co.uk (2:254/211.20)