test-drb August 1997

test-drb@ccmp.vtda.org

97 participants
288 discussions

RESCUE NEEDED! Decent MicroVAXen in UK!!!

by kyrrin2＠wizards.net

Heads up to our UK readers! Fellow's got a decent MicroVAX system that sounds like it would be free for the picking up. Heck, I'd pick it up if I were in the UK... If you can help, PLEASE get in contact with this fellow post-haste. Thanks! -=-=- <snip> -=-=- Date: Thu, 21 Aug 1997 20:57:09 +0100 To: port-vax(a)netbsd.org From: Robin Birch <robin(a)falstaf.demon.co.uk> Subject: uVAX 2 in uk X-Mailer: Turnpike Version 3.03b <YSkKJATYm0AxAbv6xwlBrCeVCW> Sender: port-vax-owner(a)NetBSD.ORG Delivered-To: port-vax(a)NetBSD.ORG Dear All, A week or so ago I advertised a uVAX 2 with 2*RA81, TK50, 8MByte, KDA50 offers please Nobody replied, does this mean that nobody wants it and I've got to throw it away or does some one want to give this box a home. Offers please, buyer collects. Robin Robin Birch robin(a)falstaf.demon.co.uk M1ASU Old computers and radios always welcome -=-=- <snip> -=-=- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin2(a)wizards.net) http://www.wizards.net/technoid "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."

26 years, 8 months

Computers (fwd)

by manney＠nwohio.com

Um...not quite. Please see my post. ---------- > From: classiccmp(a)u.washington.edu > To: Manney > Subject: RE: Computers (fwd) > Date: Monday, August 18, 1997 9:30 PM > > >From the handy "Programmer's PC Sourcebook" by Thom Hogan, Microsoft > Press, ISBN 1-55615-321-X: > > For Switch #1: > > Switch 1: number of drives, ON=drives installed, OFF=no drives (see > switch 7/8) > Switch 2: Not used, must be ON > Switch 3 & 4: Memory on system board > ON ON = 16K (PC1) or 64K (PC2) > OFF ON = 32K (PC1) or 128K (PC2) > ON OFF = 48K (PC1) or 192K (PC2) > OFF OFF = 64K (PC1) or 256K (PC2) > Switch 5 & 6: Display adapter > ON ON = no adapter > OFF ON = CGA 40 > ON OFF = CGA 80 > OFF OFF = MDA or >1 adapter > Switch 7 & 8: Floppy drives > ON ON = 1 drive > OFF ON = 2 drives > ON OFF = 3 drives > OFF OFF = 4 drives > > For Switch #2 (some obscure combos not typed in) > Switches 1-5: Memory Installed > ON ON ON ON ON = 16-64K (Switches 3 & 4 control total memory) > OFF ON ON ON = 96K (for this and below switches 3 & 4 should be OFF) > ON OFF ON ON ON = 128K > ON OFF OFF ON ON = 256K > ON ON ON OFF ON = 320K > ON OFF ON OFF ON = 384K > ON OFF OFF OFF ON = 512K > ON OFF ON ON OFF = 640K > Switches 6-8: Not Used, must be OFF (switch 7 reserved for 8087 on PC2) > > Kai

26 years, 8 months

Computers (fwd)

by manney＠nwohio.com

> Hi there. I noticed in your collection that you had an IBM PC; I'm > assuming it's a 5150. Do you have a manual for it that might list the > jumper and dip switch settings on the motherboard, and if so, could you > tell me what they are? Thanks. The 5150 (i.e. the PC) has 2 switchblocks on the motherboard. The one nearest the power supply Block 2) controls the amount of memory addressed: Mem Switch number (KB) 1 2 3 4 5 6 7 8 ------------------------------------- 16 1 1 1 1 1 0 0 0 32 1 1 1 1 1 0 0 0 48 1 1 1 1 1 0 0 0 64 1 1 1 1 1 0 0 0 96 0 1 1 1 1 0 0 0 128 1 0 1 1 1 0 0 0 160 0 0 1 1 1 0 0 0 192 1 1 0 1 1 0 0 0 224 0 1 0 1 1 0 0 0 256 1 0 0 1 1 0 0 0 288 0 0 0 1 1 0 0 0 320 1 1 1 0 1 0 0 0 352 0 1 1 0 1 0 0 0 384 1 0 1 0 1 0 0 0 416 0 0 1 0 1 0 0 0 448 1 1 0 0 1 0 0 0 480 0 1 0 0 1 0 0 0 512 1 0 0 0 1 0 0 0 544 0 0 0 0 1 0 0 0 576 1 1 1 1 0 0 0 0 608 0 1 1 1 0 0 0 0 640 1 0 1 1 0 0 0 0 0=Off 1=On Switch block 1 is farther from the power supply Switch 1 -- PC -- 0=Boot from Floppy 1=Do not boot from floppy XT -- 0=Normal POST (power On Self Test) 1=Continuous POST (i.e., won't boot) Switch 2 -- 0=Math coprocessor installed 1=Math coprocessor not installed Switches 3-4 -- Filled memory banks (on motherboard) 0 0 =All 4 banks 1 0 = Banks 0, 1, and 2 0 1 = Banks 0 and 1 1 1 = Bank 0 only Switches 5-6 -- Video Adapter 0 0 = Monochrome (MDA) or Hercules with no onboard BIOS 0 1 = Color (CGA) 40 chars x 25 lines 1 0 = CGA 80 chars x 25 lines 1 1 = Video Adapter w/ onboard BIOS Note that the PC will support a monochrome adapter at the same time as another type. Switches 7-8 -- Floppy Drives 1 1 = 1 Floppy Drive 0 1 = 2 FDD 1 0 = 3 FDD 0 0 = 4 FDD Hard drive is taken care of by the adapter card. Please e-mail me with any other questions. manney(a)nwohio.com

26 years, 8 months

Pertec cabling

by kyrrin2＠wizards.net

I can't speak for the 7970, but I can tell you that Pertec formatted connections are usually a pair of 50-pin (25 to each side) PC edge paddles. I've seen a few (very few!) devices, specifically an old Unibus tape controller, where one connection was a Berg 50-pin header and the other was an edge paddle. From your description, it sounds as though the drive may not have its own formatter built in, outside of the HPIB interface section. I could, however, be mistaken (read: I'd need to see the drive). -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin2(a)wizards.net) http://www.wizards.net/technoid "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."

26 years, 8 months

uVAX 2 in uk

by allisonp＠world.std.com

Cross posted without permission but considering all... Please can a UK person rescue this? That is a very nice MV-II system. <Delivered-To: port-vax(a)NetBSD.ORG <Status: R < <Dear All, <A week or so ago I advertised a uVAX 2 with 2*RA81, TK50, 8MByte, KDA50 <offers please < <Nobody replied, does this mean that nobody wants it and I've got to <throw it away or does some one want to give this box a home. < <Offers please, buyer collects. < <Robin <Robin Birch robin(a)falstaf.demon.co.uk < <M1ASU Old computers and radios always welcome <

26 years, 8 months

DEC DOC LESS

by allisonp＠world.std.com

<find enough boards to get an H-11 up and running. <I was wondering if any of the DEC experts out <there could identify the purpose for any of these <boards.(Names come from whats written on each board) <They all appear to be Q bus. < < M7940 or M7946 RXV11 LSI 11 Interface (Half width) RX01 floppy controller for q-bus (includes h-11). You would need the RX01 disk sustem to match it. < M8340 Decoder and Step Counter (Full width) < M8341 Multiplexers and Timing Generator (Full width) < < These two boards are linked togather with a <connector across the top of the boards. KE-8E extended arithmetic element for PDP-8E < M8639 RDRX Disk Controller (Full width) AKA RQDX2, this is a Qbus (also h-11)hard disk and floppy controller that supports st506,st412,st225, st251,q540 and RX53(1325) mfm hard disks and RX50 dec floppy. It's connector goes via a50 pin cable to a M9058 signal distribuition board and from there to the disks. The rx50 is a double density single sided 96tpi drive unique to DEC. The storage is about 409k per spindle (there are two). It is the only floppy that the RQDX firmwhere knows. You may be able to fake it into using one side of a 1.2m 5.25 floppy strapped to spin at 300rpm. < M7957 Asyn Mux (Full width) Qbus DZV-11 multi port serial IO. < M4002 ? (Half width) Qbus KW-11c programmable real time clock. < M8189 KDF 11-B (Full width) PDP-11/23B ++++ while this may work in a H11 box it will nto support q22 unless the backplane has had the lines wired in (h-11 was Q-16). This is the most common Q-22 (Qbus 22bit addressing) PDP-11 cpu and is a good performer. It has two DL compatable serial ports (console and user) along with a generic boot and ODT console. The standard chip complment is the CPU (two surfacemount chips on it) and MMU. Optional were the CIS Commercial Instruction Set, FIS floating point Instruction Set and the FPP-11 that implments the FIS-11 in hardware. < M8043 ? (Half width) Q-bus DLV-11j 4 DL serial ports on one card. < I have the processor board covered. I have about half <a dozen M7264 LSI-11 processor boards. Basic LSI-11/2 < But, I could also use a list of commands for the resident <monitor. Damn, I can't even remember what it's called. ODT, they are fairly simple: @00000G <start execution at 00000 @00000/ 12345 <display contents of location (00000) the linefeed key will cause the next location to be opend and the contents displayed @00000/ 12345 <lf> @00001/ 02010 <cr> @ Entering data.... @00000/ 12345 001040 open a location, it's contents are displayed, enter new contents, CR to close or LF key to advance to next. @P when typed at the @ (monitor prompt) the cpu will continue execution at the current address (assuming there were no errors to cause a monitor trap). $ or R Open a register for display or change. $S or RS opens the processor status register. This should help. Allison

26 years, 8 months

DEC DOC LESS

by dcoward＠pressstart.com

I dug these boards out of a closet last night to find enough boards to get an H-11 up and running. I was wondering if any of the DEC experts out there could identify the purpose for any of these boards.(Names come from whats written on each board) They all appear to be Q bus. M7940 or M7946 RXV11 LSI 11 Interface (Half width) I may have written down the wrong board number here. This, I'm 90% sure is the serial interface board I'll need to connect a terminal to the system. At least it looks like one I had on my LSI-11 many moons ago. If it is, I sure could use the pin-out for the connector and baud rate settings. M8340 Decoder and Step Counter (Full width) M8341 Multiplexers and Timing Generator (Full width) These two boards are linked togather with a connector across the top of the boards. M8639 RDRX Disk Controller (Full width) Is this a hard drive or floppy controller and if its a floppy controller, is it single or double density? M7957 Asyn Mux (Full width) M4002 ? (Half width) M8189 KDF 11-B (Full width) This appears to be a processor board with only 3 of the 5 sockets filled. M8043 ? (Half width) I have the processor board covered. I have about half a dozen M7264 LSI-11 processor boards. But, I could also use a list of commands for the resident monitor. Damn, I can't even remember what it's called. Thanks for any help, ========================================= Doug Coward dcoward(a)pressstart.com Senior Software Engineer (PSX and Saturn video games) Press Start Inc. Sunnyvale,CA http://www.best.com/~dcoward/museum =========================================

26 years, 8 months

Harris flyback transformers for H192 terminals:FS

by dseagrav＠bsdserver.tek-star.net

My boss is getting rid of a bunch of these. New and used. $35 apiece new, the used ones are $10. He's trying to clean out the back room. Can anyone use these? We have around 50 new, and 500 used ones.

26 years, 8 months

Chip

by dseagrav＠bsdserver.tek-star.net

Found a chip in my mailbox today: Z8400AB1 Is this the Z80 CPU? Not sure who put it there... Doesn't look toasted... No bent pins... It may be good! Does it have any useful purpose by itself?

26 years, 8 months

PDP-8 docs

by allisonp＠world.std.com

< Yes , I giggled thru the rest of the ng posts, many of which are <unintelligable to me. I keep hoping that enlightenment will <miraculously happen. I have been monitoring this ng for a while <and picking up snippets of info. It occurred to me that the <PDP8/e/f/m maintenance manual (vol 1 } that I had acquired and <kept since my course on dig. electronics in 83 because it had a <beautiful description of the fetch sequence in processors might be <of value in this group. If it's quite available "nevermind" that is an interesting doc. While it may have been common at one time may simply were tossed making them scarce (or still on a shelf somewhere). I'd be interested as I still like hacking with PDP-8s. Allison

26 years, 8 months

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test-drb August 1997