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101090 discussions

New Items Listed in Sellam's VWoCW (Many DEC Handbooks)

by sellam.ismail＠gmail.com

Hi Folks. Here are the new items for July 17, 2018: IBM PS/2 Model P70 386 Morrow Designs Micro Decision 1 ACCTON EtherCombo-32 Ethernet Card Inmac SP-16 Serial-To-Parallel Converter Apricorn EZ-GIG Hard Drive Update Kit HP Series 80 Data Communications Pac HP Series 80 BASIC Training Pac HippoConcept The following are all DEC manuals and handbooks: Autoconf manual A Practical Guide to Word Processing and Office Management Systems Communications Handbook dBase III v1.0 DECmate II Handbook DECSYSTEM-20 Technical Summary Digital's Office Solutions: ALL-IN-1 Handbook Distributed Systems Handbook Emulex Controller Handbook: Communications and Periperhals Introduction to BASIC Introduction to Local Area Networks IDEAS Education Software Referral Catalog IDEAS: Index and Description of Educational Application Software: 4th edition Guide to Small Business Computing Guide to Personal Computing Introduction to Computer-Based Education Large Systems Software Referrral Catalog: 4th Edition Letterprinter 100 Installation Guide Letterprinter 100 Operator Guide Letterprinter 100 Programmer Reference Manual Logistics Management: Concepts and Techniques Maintenance Aids Handbook MBASIC VT180 BASIC-80 Reference Manual MBASIC VT180 Getting Started with MBASIC VT180 Microcomputers and Memories Microsoft Multiplan Manual Network Management I Student Guide Networking: The Competitive Edge Office Information Systems Guidebook Overview of DIGITAL Networking Products PDP-11 Architecture Handbook PDP-11 Microcomputer Interfaces Handbook PDP-11/04/34/34A Maintenance Card Peripherals Handbook Professional Handbook Rainbow Handbook RSTS/E PDP-11 Operating System RSX-11 Handbook Spares Kit Handbook Terminals & Printers Handbook The DECmate Family Handbook The Guide to Team Computing ULTRIX Software Guidebook: A Reference to UNIX Software ULTRIX-32 Reference: Volume 1 ULTRIX-32 Software Development: Volume 2 UNIX Software Guidebook VAX Architecture Handbook VAX Hardware Handbook VAX Software Handbook VAX Software Tools: Languages VAXcluster Technical Summary VAX/VMS Software: Information Management Handbook VAX/VMS Software: VMS System Software Handbook VAX/VMS Technical Summary Version 4 VEDIT User's Manual The index of links to the specific items above is, as always, here: https://docs.google.com/spreadsheets...72371&range=A1 <https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi…> For the month of July 2018 I'm offering 10% off for new buyers, and 15% off for past buyers. Thanks! Sellam

8 years, 1 month

Apple and Sun keyboards

by sales＠elecplus.com

AEK II are here https://www.elecshopper.com/input-devices/keyboards/wired-keyboards/desktop- keyboards/apple-extended-keyboard-1.html All Apple are here https://www.elecshopper.com/input-devices.html?manufacturer=48 Sun Type 4 are here https://www.elecshopper.com/input-devices.html?manufacturer=46 Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com AOL IM elcpls --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years, 1 month

MSV11-J repairs

by jnc＠mercury.lcs.mit.edu

Hi, all, if anyone has any broken MSV11-J boards, I recently fixed one for a list member, and if anyone else has a broken one they'd like me to take a gander at, please let me know. (No charge!) I won't be able to fix _all_ problems (we don't have prints, or replacements for the custom gate arrays), but if it's just a failed DRAM chip, that I can isolate and repair. Noel

8 years, 1 month

Got a kidney!

by harper＠secureoutcomesinc.com

Excellent! Godspeed! Jack ><snip> > > On Jul 14, 2018, at 14:14, Daniel Seagraves via cctalk < > > cctalk at classiccmp.org> wrote: > > > > > > Got the call yesterday. Transplant operation was a success. Still at the > > hospital recovering. Will update when able. > > > > > > > ---------------------------------------------------------------------------------- Jack Harper, President Secure Outcomes Inc 2942 Evergreen Parkway, Suite 300 Evergreen, Colorado 80439 USA 303.670.8375 303.670.3750 (fax) http://www.secureoutcomes.net for Product Info.

8 years, 1 month

Another DCJ11 oddity

by jnc＠mercury.lcs.mit.edu

> From: Jerry Weiss > See http://simh.trailing-edge.com/semi/j11.html for information on the > design of the J11. Thanks for that pointer; I don't think I've ever seen that - quite interesting. Alas, it didn't have the cache info - but now that I've though about it overnight, I'm pretty sure the reason for the two bits that do the same thing is for -11/70 compatability. > I've always assumed the differences in controls in the CCR as necessary > to support diagnostics of memory and the cache itself. Yes, the DCJ11 cache is quite interesting, the way the functionality is partitioned between the chip itself, and external circuitry; the actual cache data is stored externally, along with the tags, parity, etc, and also the CPU and DMA comparators. The KDB11-A and -B differ a bit in their cache; both are single-associative (i.e. only one cache cell for each word), but the -B has duplicate tag arrays, one for the CPU's use, one for DMA devices - apparently so that contention between the two for access to the tags doesn't slow things down (since the tag stores are memory arrays, they need to do an address-input before any tag can be checked). > In addition to above, there is a bypass cache bit in the PDR (section > 1.5.6.2) for finer control. Yes, I only found that out last night (or maybe I saw it on a previous scan of the manual, but its importance didn't register). The -11/70 doesn't have that! Very useful for my application (a memory tester program)... Noel

8 years, 1 month

GCC Ada for Linux/MIPS/BE and Linux/HPPA2

by carlojpisani＠gmail.com

hi is there any chance someone has a working gcc-ada compiler? for - Linux/MIPS (big endian, MIPS3, MIPS4 or MIPS32) - Linux/HPPA2 I have successfully compiled gcc-ada for SGI_IRIX (MIPS4/BE) but ... every attempt to create a cross-compiler(1) fails on HPPA I have never seen an Ada compiler (1) host = Irix-MIPS4/BE target = Linux/MIPS32/BE

8 years, 2 months

uVax cabinet wheels

by shumaker＠att.net

Anyone know a source for replacement hard molded wheels that would fit a MicroVax 4000 low profile cabinet base??? I'm missing two and the other two may as well be gone given how functional they are.??? Mounting hardware is still intact, it's just the wheels that I need.. Steve Shumaker

8 years, 2 months

An historical nit about FDDs

by jnc＠mercury.lcs.mit.edu

> From: Jon Elson > I THINK the 370/145 used the same drive. The "IBM's 360 and Early 370 Systems" book doesn't say so explicitly (it just says Minnow - the one with the solenoids - was a"incorporated in .. the System/370 processors", pg. 517), but given that the follow-on drive (Figaro/Igar) didn't start shipping until 1973 (pg. 519), and the /145 started shipping in 1971, it pretty much had to have had a Minnow. Noel

8 years, 2 months

An historical nit about FDDs

by t.gardner＠computer.org

Anyone know where the Step/Direction version of the FDD interface originated. So far as near as I can tell the earliest FDDs (IBM 23FD Minnow and Memorex 650/651) used Step In/Step Out. The IBM 33FD Igar used direct control of the motor. The earliest Step/Direction FDD I can find is the Shugart 800 which first shipped in September 1973. Tom

8 years, 2 months

I hate HP 914x tapes

by aek＠bitsavers.org

Man, these things are annoying. All of the bands are bad, and they leave residue on the spools. There are no EOT BOT holes on the HP tape, and the drive locks the cartridge until you 'unload' it, which spins to the EOT soft region. Well, guess what, they leave the tape in a position where the residue ends up near the last block on the track, so it will read track 1 (4mb), or maybe 1-3 (12mb), then fail when it hits the gunk. You DON'T want to bake that gunk on! It is possible to remove it but DO NOT EVER USE ALCOHOL ON A QIC TAPE! It instantly takes off the binder. Water-based cleaner (like whiteboard cleaner) seems to work but it is extremely difficult to work with the tape and not damage it. My sympathies to anyone having to deal with recovery of this media.

8 years, 2 months

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