test-drb May 2013

test-drb@ccmp.vtda.org

213 participants
253 discussions

by bpicchi＠gmail.com

Hi Dave, I saw your message about downsizing your collection. I have a small museum of computers here in Southern California. You can view my website at TanruNomad.com I'm interested in purchasing 3 of your computers: Apple II IBM 5100 ProcessorTech SOL Would $400 for all 3 be acceptable? -- *Brian Picchi*

11 years, 2 months

Signal generator available

by sales＠elecplus.com

Not affiliated with this guy at all, just thought someone might be interested. We have a Rhode & Schwarz---- SMHU SIGNAL GENERATOR Has some problem----- Marked Rejected-(w/note too expensive to repair) Lights-up and then shuts off...... Looking for an interested participant..... Do you have any interest? Dollar Bills (1) 214-264-9000 Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3336 / Virus Database: 3162/6338 - Release Date: 05/19/13

11 years, 2 months

Need Timing Generator Coil for a DEC paper tape punch

by michael.99.thompson＠gmail.com

The Timing Generator Coil on the paper tape punch on the PDP-9 at the RICM is open circuit. The current plan is to try to source some really fine magnet wire and rewind the coil. It would save us a lot of time and effort if someone would be willing to donate a replacement coil. Is a PDF version of the maintenance manual for this Royal McBee punch available? -- Michael Thompson

11 years, 2 months

OS/2 CDs - free...

by jrr＠flippers.com

I have a collection of OS/2 CDs that a past developer for OS/2 gave me years ago and they've been sitting on a shelf at my shop here in Vancouver, BC (Canada). I just noticed some discussion on OS2 and thought someone local to me may be interested in the pile and I'd rather they went to a good home than be recycled...just pay shipping. Includes: OS/2 Source kit (1994) OS/2 1000+ Applications Guide (1993) The Developer Connection for OS/2 - 1, 2, 3 (1994) OS/2 Warp Ver 3 (1995) VisualAge C++ for OS/2 Ver. 3.0 (1995) OS/2 Hobbes CDROM (1993) C Set ++ for OS/2 (booklet only - CD lost, see next item) IBM C Set ++ for OS/2, Ver 3.0 Beta 2 Ver 04/95 (This product has been renamed "IBM VisualAge C ++ for OS/2, V3.0" OS/2 Warp Connect Ver 3 (1995) Others: Digital Tools For SUN (1992) SCO OpenServer 200-920-100 (1995) There may be a few more, but that's the easily listed ones. John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"

11 years, 2 months

Tek 4052 / Dc300 tapes issues

by jdr_use＠bluewin.ch

So I picked up a pair of Tek 4052, plenty of doc and spares, and some library tapes. Sadly tapes were stored in less that ideal conditions. So I have mouldy tapes, and lots of broken DC300 drive belts. I am ready to ignore the mould, but what about the drivebelts ? Any alternatives to pinching them from still functional cartridges ? Jos

11 years, 2 months

Omnibus - ATA Adapter Re: Omnibus to USB

by chd＠chdickman.com

On Fri, May 17, 2013 at 8:38 PM, Rob Doyle <radioengr at gmail.com> wrote: > On 5/17/2013 12:01 PM, Cory Smelosky wrote: > > IDE on a PDP-8 would be...interesting to say the least. >> > > I played with an adapter about 10 years ago. I think it was a PLD with some buffers. I wasted the upper 4 bits in every word and took advantage of the fact that the command registers are only in the lower 8 bits. PIO mode transfers only, so it was really simple. It was impossible to get a handler for OS/8 small enough to fit in two pages. I cheated and put stubs in the lower fields and the handler itself in the high field. > The Spare Time Gizmos SBC6120 board has an IDE disk drive. They've also > hacked a device driver for OS/8 that supports it. > > And most of the device driver is in console memory space. -chuck

11 years, 2 months

Running DDR really slow, for a microcontroller

by rdawson16＠hotmail.com

Has anybody used a DDR3 part in DLL Disable mode? I'm looking at a Micron MT41J512M4, and the datasheet says that in this mode, the max. clock period is 7800ns. (thats 128,205 Hz) So it looks like you can interface these with microcontroller just fine. Anybody tried this? Randy

11 years, 2 months

Available S-100 PCBs

by LYNCHAJ＠YAHOO.COM

Hi, an update on available S-100 board PCBs Good news!? There are several new and reordered S-100 PCBs available! The S-100 68K CPU boards are almost gone and there is still 1 available. There are 23 of the S-100 IDE V2 reorder PCBs and 3 of the new S-100 bus terminator/prototyping board PCBs. There are 3 of the S-100 LAVA PCBs available. http://s100computers.com/My%20System%20Pages/68000%20Board/68K%20CPU%20Board .htm http://s100computers.com/My%20System%20Pages/IDE%20Board/My%20IDE%20Card.htm http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=S-100%20bus%20t erminator http://s100computers.com/My%20System%20Pages/Lava-10%20Board/LAVA-10%20Board .htm The S-100 PCBs cost the same as before ($20 each).? However due to unforeseen extreme price increases in shipping by USPS I am forced to change shipping costs. Shipping in the US will be $3 for a single PCB and $2 for each additional PCB.? Shipping internationally will be $10 for a single PCB and $3 for each additional PCB.? This is for the bare basics USPS first class postage with no tracking or insurance.? The builder assumes all risk of delivery as per usual arrangement. I apologize for the large price increase on shipping but this is out of my hands.? The USPS is in dire financial trouble and is raising prices on shipping.? It affects us all and is most unfortunate.? These boards are provided "at cost" so there is no margin to absorb any shipping price increases.? I have to pass them along. If you would like one or more S-100 PCBs please send a PayPal to LYNCHAJ at YAHOO.COM Thanks and have a nice day! Andrew Lynch PS, if you would like to help out this all-volunteer project please get one or more of the S-100 LAVA PCBs. These PCBs are the oldest ones and them sitting around on a shelf does no one any good. I?d like these to go to a hobbyist who would get some enjoyment from these fun to build and use boards. Thanks in advance. I truly appreciate everyone's support in moving these remaining boards. You make this hobbyist home brew project possible.

11 years, 2 months

ADF/high speed scanner - Toronto area?

by toby＠telegraphics.com.au

I posted this to a local list (Unix Unanimous) but got little response, so am reposting here. --------------------- Anyone have a scanner (some kind of ADF) that I could borrow or use on site or even buy (especially Epson, which I've seen superb results from)? I have a lot of ring binder type pages that I'd like to scan. 300/400 dpi should be adequate. This is just a non-commercial personal retrocomputing project. Toronto area (~ Davenport). Thanks in advance, --Toby

11 years, 2 months

AT&T 3B1 / 7300 UNIX PC parts needed

by classiccmp＠philpem.me.uk

Hi guys, A few of you might be aware of my UNIX PC emulator, FreeBee (also known as 3b1emu) and the issues regarding it not being able to boot UNIX properly... and my complaints about the quality of the PAL equations in the technical reference. Well, an anonymous donor very kindly freight-forwarded a UNIX PC to me. Sadly the original sender didn't pack it very well... The machine was sent unwrapped with only a few foam peanuts in the box. It arrived with a "resealed by USPS" sticker, a "resealed by Parcelforce" sticker and the keyboard hanging out of one edge of the box. Here's what's missing or wrecked -- does anyone have any of the following 3B1 or 7300 parts spare? Keyboard - * Top cover, several broken screw posts in the top cover. These look difficult to re-glue... * F8, HELP UP/DN, NEXT/3, ROLL DOWN/0 and RIGHT CURSOR/. keycaps. Monitor - * Monitor stand (tilt/swivel section) smashed to pieces. Probably need a new lower monitor case from a scrap 3B1 to fix this :( I'd also rather like to find out what sort of connector was used for the power connector at the PSU side - the cable and connector are badly burned (apparently a common problem). On a lighter note, the machine is fairly well specified - with a P5.1 motherboard, two 67MB hard drives (both Miniscribe 3085 units) and some unusual I/O cards. One is probably a modem (three RJ11 sockets), another has a 37-way female D-sub and the third I can't remember off hand. I still need to formulate a plan to power it up - I'd rather not use an ATX PSU, and the original switcher is 115V only. The 20A current requirement on 5V means none of my bench PSUs are suitable... It also wants +12V (which I expected - the HDDs and line drivers need that) and -12V (probably for RS232 and the modem)... Much thinking needed, I dare say... Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

11 years, 2 months

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test-drb May 2013