test-drb October 2005

test-drb@ccmp.vtda.org

264 participants
655 discussions

PCs that support only one floppy drive in hardware

by ajp166＠bellatlantic.net

> >Subject: Re: PCs that support only one floppy drive in hardware > From: ard at p850ug1.demon.co.uk (Tony Duell) > Date: Thu, 13 Oct 2005 10:39:21 +0100 (BST) > To: cctalk at classiccmp.org > >> >The _drive_ is HD, I am not sure what the controller can do, though. The >> >suffix letters of Teac drive numbers seem to indicate the specs as >> >follows : >> > >> >A : 40 cylinder single-sided >> >B : 40 cyclinder double sided >> >C : 77 cylinder single sided (??? I have never seen this) >> >D : 77 cylinder double sided (??? or this) >> >E : 80 cylinder single sided >> >F : 80 cylinder double sided >> >> 300 rpm only >> >> >G : 80 cylinder double sided, 360RPM, high density (1.2M for PCs) >> >> Does both 300 and 360. (can replace the E and F with correct jumpers). > >I am not convinced of that. I think 'G' implies 360RM. The drive in >question is a 'GFR', thus having the capabilites of both the 'G' and the >'F', in other words both 360 and 300 rpm. I am certain of the GFR, I have maybe 8 spares and 5 in use to confirm it with. Dec use that drive in the VAXMATE at 1.2mb and as RX33 in uPDP-11 at 400/800KB (low speed) units I've used for both are exact same units. one oddity of the FD55GFR series is I have at least 5 different PC board patterns that function the same, they are of different date codes. I have also used them in my S100 system for the infrequent DSQD 780kb CP/M format that is compatable with my Kaypro 4/84 with Advent turborom. I also have a supply of FD55B, E and F series drives as spares and in use My three Visual 1050s have the FD55E in them. My knowledge is first hand. Read the data for that drive and you will see that FD55GFR is a DUAL speed drive. >> >H : 80 cylinder double sided, 300RPM, high density (1.44M for PCs) >> >> Never seen an FD55H. > >No, but the same suffix letters are used on 3.5" drives too. I would have guessed it was 3.5" too. Allison

20 years

PCs that support only one floppy drive in hardware

by ajp166＠bellatlantic.net

> >Subject: Re: PCs that support only one floppy drive in hardware > From: ard at p850ug1.demon.co.uk (Tony Duell) > Date: Wed, 12 Oct 2005 17:18:42 +0100 (BST) > To: cctalk at classiccmp.org > >> I'm sitting here looking at a TEAC FD-55GFR 5.25" floppy drive with a >> TEAC-branded SCSI daughterboard mounted on it. Picked this thing up for a >> buck at a flea market and don't know much about it. Anyone else familiar >> with it? I'm not even sure if this is a HD drive. > >The _drive_ is HD, I am not sure what the controller can do, though. The >suffix letters of Teac drive numbers seem to indicate the specs as >follows : > >A : 40 cylinder single-sided >B : 40 cyclinder double sided >C : 77 cylinder single sided (??? I have never seen this) >D : 77 cylinder double sided (??? or this) >E : 80 cylinder single sided >F : 80 cylinder double sided 300 rpm only >G : 80 cylinder double sided, 360RPM, high density (1.2M for PCs) Does both 300 and 360. (can replace the E and F with correct jumpers). >H : 80 cylinder double sided, 300RPM, high density (1.44M for PCs) Never seen an FD55H. Allison

20 years

PCs that support only one floppy drive in hardware

by ajp166＠bellatlantic.net

> >Subject: Re: PCs that support only one floppy drive in hardware > From: Scott Stevens <chenmel at earthlink.net> > Date: Wed, 12 Oct 2005 18:39:30 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On Wed, 12 Oct 2005 08:06:10 -0400 >Allison <ajp166 at bellatlantic.net> wrote: > >> >> On the whole I prefer my solution. A simple 486/66 on a board that >> doesnt have any "chip set" and ISA cards that are easy to find in >> junkers. Convenient, you bet. The board board I selected uses PS2 >> keyboard and mouse. I have two spare boards and the nicads have been >> removed to prevent leakage. Thse have done well for floppy futzing >> from any 5.25 to any 3.5" (excluding the near unseen 2.88). >> > >I don't know that I've ever seen a 486 motherboard that didn't use a >'chipset.' The ASIC >'chipset' motherboards came in the late 286/early 386 era. The big >'Full AT footprint' '286 motherboards don't use a 'chipset' but rather >lots and lots of TTL gates and standard Intel 8xxx LSI chips. I differentiated ASIC glue from the other types of chipsets that are programable like the PCI bridges and resident FDC/IDE/Serial/parallel. Ever try to get W9x to run on a PCI machine without the correct PCI bridge driver? It's painful. For example the 486slc/33 mb I have in fornt of me is one of those small footprint styles (6.75x8.75") with 5 ISA-16 slots and four 30pin simm slots. There is an asic on that that really only glues the 486slc to the bus and contains the 8237 DMA not any of the other LSI (5818 RTC/Cmos and 8242 keyboard) functions. For it's size the board is mostly connectors! >Tony can probably add a few comments about the switch from 'regular >logic' PeeCee motherboards to 'chipset' based ones, as he seems to be >running a 'processor upgraded' IBM AT system specifically to avoid >'black box' ASIC-base motherboards. No doubt. But I hope he reflects on my use of chipset adverse to ASIC. >I definitely don't have any 'current solution' hardware here that I am >wailing about not being able to use. My Dell systems are >first-generation 100MHz bus Pentium III systems, which makes them >'rather old' in current terms. Today somebody at work gave me an 'old' >machine out of his car from home that he didn't want anymore. Said 'you >can probably salvage something out of it.' Then he dropped the comment >that it probably has an 800 MHz process. Uh... That 800mhz machine and definatly the PIII are way faster than anything I have. The main PC here for most on line cruft is a P166mmx from around 1998 an asus board. >I agree about the usefulness of keeping around some 'plain old' legacy >systems from the '486 or early Pentium era. I've always kept boxes like >that around for things like the machine at the bench that programs >EPROMS (my EPROM programmer is one of those Needham PB-10 ISA card >programmers (it will last FOREVER since the most 'proprietary' parts on >it are two 6821 PIAs) One of those 486s has the BGLA logic analyser in it. Handy 16channel thing. Allison

20 years

Archival storage

by mtapley＠swri.edu

At 16:03 -0500 10/10/05, Fred wrote: >Message: 27 >Date: Mon, 10 Oct 2005 13:45:02 -0700 (PDT) >From: Fred Cisin <cisin at xenosoft.com> >Subject: Re: Archival storage >... >How much would it cost to move Sellam's collection >to the dark side of the moon? </Pedant> ...and keep moving it every 2 weeks, as the _dark_ side of the Moon moved around to the other side of the Moon (even if it was on the _far_ side)? Better to use those craters around the lunar North Pole. If Sellam's collection didn't fill them up... </Normal> If I'm gonna be a smart-ass, I *really* should be caught up, shouldn't I? Sorry... -- - Mark 210-522-6025, temporary cell 240-375-2995

20 years

ISA and derivitive non-PCs (was PCs that support only one floppy drive in H/W)

by compoobah＠valleyimplants.com

In the almost-UNIX front, Apollo workstations were ISA based. SGI Indigo2 and some HP-9000 PA-RISC desktops run EISA, with the unrealized hope (same as PCI, really) that more hardware would work with them. Few companies wrote drivers, though

20 years

Looking for ancient FreeBSD

by msokolov＠ivan.Harhan.ORG

Brad Parker <brad at heeltoe.com> wrote: > just curious, do any of these fit the bill? > > http://ftp.csie.chu.edu.tw/FreeBSD/ISO-IMAGES-i386/ Thanks! When I get a chance to download and burn that ISO image, I'll know whether it fits the bill. :-) MS

20 years

Looking for ancient FreeBSD

by msokolov＠ivan.Harhan.ORG

e.stiebler <emu at ecubics.com> wrote: > I know it is evil too, but did you try to check it out from the CVS ? That would give me just the source and not an installable distribution. I actually want to install it on a pee sea. MS

20 years

Restoring broken plastic

by cclist＠sydex.com

I'm looking at a couple of old tape drives that have severe front panel damage. Parts of each are broken off into many small pieces. I don't know what polymer was used, but it does seem to use a large amount of filler in proportion to resin (i.e., there's not much strength to this stuff--it doesn't break with a sharp "snap", but seems to fracture like a damp cracker). What adhesive is recommended for repairing these items? Cyanoacrylate (super glue)? Polyurethane (Pro bond)? Something else? A solvent cement is out of the question, I think. Would reinforcement wtih glass cloth be an option to strengthen things? Suggestions are most welcome. Cheers, Chuck

20 years

PCs that support only one floppy drive in hardware

by ajp166＠bellatlantic.net

> >Subject: Re: PCs that support only one floppy drive in hardware > From: "Nico de Jong" <nico at FARUMDATA.DK> > Date: Wed, 12 Oct 2005 14:44:31 +0200 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > > >----- Oprindelig meddelelse ----- >Fra: "Steven N. Hirsch" <shirsch at adelphia.net> >> >> I'm sitting here looking at a TEAC FD-55GFR 5.25" floppy drive with a >> TEAC-branded SCSI daughterboard mounted on it. Picked this thing up for a >> buck at a flea market and don't know much about it. Anyone else familiar >> with it? I'm not even sure if this is a HD drive. >> >GFR is the 1.2M (HD) drive >Nico That is way to terse an answer. The board _may_ have been a comonent in a DEC system (microVAX3100 series) as an RX33 drive via SCSI. The FD55GFR Floppy disk drive is a 5.25 dual speed, two sided drive capable of PC 1.2mb mode as well as operation at all lower density 96tpi modes and if double stepped will reliabily read 48tpi formats both single and double sided. This type drive in the nonPC world was also called DSQD(Double Sided Quad Density for up to 800kb) or DSHD (Double Sided High Density for up to 1.2b) While used in PC based system it also appeared in Digital in both their VAXmate, DECmateIII, PDP-11 and microVAX (3100 series) systems as RX33. Somebody should archive that. Allison

20 years

OT && !OT Apple Warning

by dogas＠bellsouth.net

Its been PowerPC season down here. First, found and have been playing AIX on that IBM RS/6000 520, and then a couple of more recent Macs appeared, a sweet 700mhz g4 imac lamp/flatpanel model with OSX Jaguar CDs for almost nothing. Been enjoying OSX. too Then the other day I got a 350mhz slot-loading g3 all-in one imac. OS 9.1 was screwed up a little and the CDROM drive wasnt working, just spitting CDs back out. Big pause too on startup. I finally got OS 9.0 to boot and reinstall from an attached USB cdrom. And then I figured what the hell, and proceeded to install OSX/Jag on the g3... WARNING! Don't do that without updating the computer's firmware first! Too late for me. It highly screwed up the computer (pram/analog video settings/black screened) http://db.tidbits.com/getbits.acgi?tbart=06973 ...has a good article on it, but I'm trying something different... The logic board on the G3 doesn't have the VGA connector, but I have a junk imac logic board with the VGA port.. It was a good enough excuse to break out the blow torch and tonight I'll solder it onto my 350mhz board, hoping to get maybe at least get the 'alternate' video instead of just the imac's "Black Screen of Death" OS9.0 might still be in there but I think I still need a OS 9.2.2 CD (or a dmg) too and some way to genate a bootable HD with new firmware, externally. Anyone want to trade and get a nice MAC 0S 7.0 floppy package for a 9.2.2 CD? (open to other trades too) I've got the g4 imac and a beige g3 somewhere still, I hope, to work on the imac's HD if needed, but I sure could use some apple help. I bet many of us here will begin seeing some of these newer macs in our searches for the older stuff, watch out.... UPDATE FIRMWARE BEFORE INSTALLING OSX Dammit, I'm still mad that Apple's OS install can so f$&&ht up their own semi-current machine... Apple should never again be able to bitch about anything Microsoft... ;) - Mike: dogas at bellsouth.net

20 years

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test-drb October 2005