test-drb May 2007

test-drb@ccmp.vtda.org

235 participants
483 discussions

by hamren＠sdu.se

> From: "dwight elvey" <dkelvey at hotmail.com> > No, the difference between the 800 and 801's was the clock > separator. It had nothing to do with hard sectored. On page 6 the "SA800/801 Diskette Storage Drive // OEM Manual", dated May 1980, states the following differences between the different models: 800-1 Soft Sectored with an FM (single density) data separator. 800-2 Soft Sectored without data separator. 800-4 Mechanics only (No PCB). 801 Hard-sectored with an FM (single density) data separator and sector separator. NOTE To convert a 801 to a 800 move the shorting plug from the 801 position to the 800 position. A 800 cannot be converted to a 801. /Lars Hamr?n

17 years, 7 months

TNIX

by aek＠bitsavers.org

> fsck is a stand > alone utility and I didn't get any software with the machine, except > what was instaled on the 8" HDD. It would be really nice to get the > software and make the machine usable again. My machines are in the same state, which is why I asked about the stand-alone utilities. The only standard DEC card was the CPU. All of the rest was custom to Tek. The version of the box with 5" winchester uses a sasi host adapter, so in theory it should be possible to image the disc.

17 years, 7 months

Identify a Zener diode for a Morrow s-100 mother board

by billdeg＠degnanco.com

I am looking to replace a blown Zener diode for a Morrow s-100 mother board called Wuderbuss with Noise Guard 1977 G. Morrow Thinker Toys. Any known schematics? Here is the problem: http://vintagecomputer.net/Morrow/wuderbuss_mb_s-100.jpg ...note the blown Zener Diode at the top of the picture. I am unsure of the cause. Thanks. Bill

17 years, 7 months

The old PVC cable vs. polystyrene box problem

by witchy＠binarydinosaurs.co.uk

Hi folks, Yesterday I picked up a Multitech Microprofessor II* plus some other goodies like an EACA Video Genie and lots of useful Sinclair QL bits, only a 7.5 hour round trip too :) On inspecting the MPF-II's box, I'm guessing it's been sat in a cupboard since 1985 as a lot of the internal walls have reacted badly with the PVC cables, some of them have been eaten through. What plastic can I wrap the cables in to avoid any more damage? Polythene wrap? Cheers, *never seen one in the wild before, or even on auction sites.....IIRC it was largely designed to be Apple ][ compatible..... -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

17 years, 7 months

Mentec

by bqt＠softjar.se

"Zane H. Healy" <healyzh at aracnet.com> skrev: > At 12:07 PM +0100 5/7/07, Rod Smallwood wrote: >> 1. Are Mentec still selling PDP-11 operating system licenses? > > You can still buy licenses, and yes, I do know someone to talk to about it. > > Don't expect to ever see a Hobbyist License, and don't blame Mentec. True, and sad. >> 2. Are they still making PDP-11 hardware? > > I'm honestly not sure who might still be making hardware at this > point, although I don't think Mentec is any more. Quickware and Strobe? Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

17 years, 7 months

Old Subject, Another Twist

by Billy.Pettit＠wdc.com

For those who remain unconvinced about the importance of ESD: http://www.eetimes.com/news/latest/showArticle.jhtml?articleID=199203948 Disk drive heads and media are manufactured using Semiconductor lines, so they have the same problems. Disk drives are worse in fact, since the heads and media are exposed to air during manufacturing. I just saw a study that found head failure to be the number one long term failure. The wear study expected to find bad motor bearings or gasket break down. Instead, MR heads are usually the first item to wear out by a big margin. The study separated crashes from head degradation, so it truly is head wear out. Electronics (PCB related) failures were under .5% of the total. Billy

17 years, 7 months

Mentec

by RodSmallwood＠mail.ediconsulting.co.uk

Well that seems a lot closer to the truth. Please explain < Don't expect to ever see a Hobbyist License, and don't blame Mentec.> Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Zane H. Healy Sent: 07 May 2007 17:04 To: General Discussion: On-Topic and Off-Topic Posts; General Discussion: On-Topic Posts Only Subject: RE: Mentec At 12:07 PM +0100 5/7/07, Rod Smallwood wrote: > 1. Are Mentec still selling PDP-11 operating system licenses? You can still buy licenses, and yes, I do know someone to talk to about it. Don't expect to ever see a Hobbyist License, and don't blame Mentec. > 2. Are they still making PDP-11 hardware? I'm honestly not sure who might still be making hardware at this point, although I don't think Mentec is any more. > 3. Why have Mentec removed all mention of PDP-11 products from their >web sites. You'd have to ask them about that one. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

17 years, 7 months

value of IBM 5110?

by silent700＠gmail.com

I've spotted this nice setup locally, wondering if the guy is asking way too much for it: http://chicago.craigslist.org/chc/sys/322279611.html If the link goes dead, it's an IBM 5110 PC, 5103 Printer and 5114 dual floppy unit. Yeah, I know, it's worth what people will pay for it. But I don't even see any completed on ePay, so I can't begin to gauge the appropriate value. Those big floppy drives are calling me, though... -- jht

17 years, 7 months

value of IBM 5110?

by aek＠bitsavers.org

> Anyone have any idea how to "IPL" it > or do a read off the disks? imagedisk should be able to read them, if you have an 8" drive.

17 years, 7 months

Freecycle stash of Apples found.

by us21090＠yahoo.com

All, About a month ago I picked a nice stash from a freecycler wishing to clean out. The summary list: Partial Apple II, II+, IIe and lots of h/w accessories and software. The fuller list is at the end of this entry. I'm not a big collector (I have a Obtronix Apple Replica and Kim-1 (another 6502 SBC)). But I thought I'd piece together a nice representative Apple 2 and sell off the rest. I haven't tested anything yet. Question 1: Which to keep: II, II+, or IIe? I need to review Apple system hardware history, but I'd figure the IIe has the most capability, but the II is more significant. Question 2: Which accessories are significant to keep (you know, but hate to say it: "VERY R at RE!!!")? Some things may be rare, but I doubt I'd use them. For example, the Switch-A-Slot (see http://tinyurl.com/2m8b3e ) Thanks for any helpful suggestions! Scott Fuller lengthier list (my notes are shoddy in places) ***Systems*** Apple II MN/SN: A2A0016/A2S1-61847 * Manufacture Date (corner of mobo): 7928 * Missing Power supply * Missing Cover (aaargh!!) Apple II+ MN/SN: A2S1016/A2S2-102594 * Ram Card (CSE/KS??) * Disk ][ Interface card * Apple IIe MN/SN: A2S2064/A2S2-D45-055F * Disk ][ Interface card * Mouse interface * Mockingboard * Parallel Card - Precision S/W * RAM Works II ***Other Hardware*** Apple Disk ][ A2M0003 (Qty 3 older style, Qty 1 newer) Transware Accelerator Joystick Koala Pad Numeric Keypad IIe A2M2003 Synch Printer Interface card IRQ Manager - Berkeley Softworks Switch-A-Slot - South Calif. Research Group IEEE-488 Card MPC Peripherals AP-S10 SUP'RMOD VHF Converter Interactive Structres A/D Modem - Applied Engineering Datalink Floppy Drive Controller for IIe 3.5" Drive Disk ][ Interface Card CMS SCSI II Apple Super Serial Card II Apple IIe 80 Col/64K Memory Expansion Sequential Systems Ram80 Silentype Printer A2M0032 Hardrive in enclosure (I didn't open to get model, size) Apple Monitor (I didn't note the model) Commodore Monitor (I didn't note the model) ***Software*** Copy II Plus DOS 3.3 Basics, System Manual MousePaint ProDOS Start Smith's Adventure Construction Set Apple Fortran Apple Pascal GEOS - includes GEOFile, GEOCalc,... Merlin Pro Macro Assembler IIe, IIc No Slot Clock more (if I remember correctly) ***Software on Cassette*** Mastermind Apple Lis'ner, Apple talker RamTest Forte' Music Dynacomp - Poker Party, Teacher's Pet, Games Pack Renumber/Append, Alignment Test Tone MicroUsers Software Exchange (Baltimore) - UDraw, Music Box Apple - Phone List, Brian's Theme Apple - Hopalong Cassidy, Lemonade Apple - Penny Arcade, Finance 1 Speakeasy Bulls & Bears Avalon MicroComp Game - Computer Baseball Strategy ***Books*** A Guide to Programming in AppleSoft (2nd Ed) Apple II Basic Manual, Ref Manual DOS Manual (DOS3.3, I think) SuperSerial Card AppleSoft Basic Programming Reference Manual Apple Machine Language (Don and Kurt Inman) __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

17 years, 7 months

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test-drb May 2007