test-drb July 2006

test-drb@ccmp.vtda.org

204 participants
377 discussions

by julesrichardsonuk＠yahoo.co.uk

Topic came up on a local newsgroup - anyone know what the typical speed of a chain printer was/is? I can't find any hard figures online - all the info about chain printers seems to just say they were "high speed" and that's it. Just curious! cheers Jules

18 years, 5 months

TRS-80 PT-210 printing terminal interfacing

by dgriffi＠cs.csubak.edu

I have a PT-210 printing terminal from Radio Shack. There's a slot for an rs232 serial connector adapter. Does anyone know anything about this adapter such that I can build one myself? How about schematics? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

18 years, 5 months

OT but surprising (although not really) - SGI

by compoobah＠valleyimplants.com

Am I reading their announcements right (https://support.sgi.com/login) that they are dropping not only MIPS but also all graphics systems (incl. Prism)? I guess it makes sense from a business standpoint - anybody can make an Itanium with a ATI graphics card, and VPro was a bit long in the tooth - but it's still a bit of a shock.

18 years, 5 months

Does anyone on the list have an ISOs or pointers to ISOs for a "New Internet Computer" (NIC)?

by ethan.dicks＠gmail.com

It's not quite 10 years old, but it's off-the-wall enough, I think, to fit in here. I have a NiC that I got when they were new. It's great, but somewhat orphaned. For those that don't know, it was a dictionary-sized Intel box, notable for its lack of a hard drive. Larry Ellison (of Oracle fame) intended it to be an Internet Appliance and Windows Killer. The company sold a number of the machines, but never made a big splash. They folded a few years ago, and took things like their Yahoo Group with them. What I'm specifically after was an ISO that someone came up with that would boot the NiC, then run entirely out of a RAM disk, allowing you to mount different CDs of music as a jukebox. I have a project I'd like to do and I think that would make a good starting point. I've been googling for NiC and disk images and such for a while and can't even find any of the once-available standard boot images for the NiC, let alone anything a little bit custom. Thanks for any tips. -ethan

18 years, 5 months

IEM-4400 (was Documentation for HP Nighthawk 20mb drive)

by vp＠drexel.edu

"Joe R." <rigdonj at cfl.rr.com> wrote: > Do you have ANY docs for the IEM dirve? I have several of their units > and I'd like to find out more about them. alas nothing. I have asked on this list before for any info on this thing, but I got no answers. **vp

18 years, 5 months

Laser 128 please help

by bob099＠centurytel.net

I picked up a Laser 128 at a flea market for $5. Got it home hooked up to video in port on tv, it booted a disc I didn't even know it had, a childrens spelling game. I have just exhausted my knowledge of the Laser and Apples in general, where can I go for more information? Anyway to create a system disc, without access to an Apple? Google provides an embaressment of sources about apple but much less about Laser.

18 years, 5 months

keyboard cleaning

by chrism3667＠yahoo.com

no wd-40 isnt a good lubricant (for certain tasks at least) but it is supposed to be a penetrant. I had thought that a subsequent wash of alcohol would remove *it*. Im contemplating submersing it in a watered down sudsy ammonia solution. Sudsy or probably even strait ammonia is the BEST stuph that Ive seen for getting at hidden crud, even better then acetone. You have to soak it for a day or 2 though. But it reacts with copper so Im concerned. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 5 months

*early* Domain OS available? ---> 8" floppy with Imagedisk

by kelly＠catcorner.org

> I've used a Shugart 801R with Imagedisk, and it works very nicely. I > laid out a small pcb to simplify the connections and could have more > made up if there were any interest. I would be interested. My wiring of the adapters looks like a bird's nest, but not wuite as organized. I did by an fdadap, but I could use some more adapters. What do you do for DS/SS sensing? I ended up using a small toggle switch. I use Tandon 848 double sided drives with imagedisk. They work very well, you just have to keep the heads clean. > > Dave Dunfield was invaluable in helping me work thru issues getting > single density to work properly. I ended up with an Adaptec ISA scsi > adapter card for the floppy controller which works well (it's > a 1522a). I can't say enough good things about Mr. Dunfield nor ImageDisk. I have made images of Tandy 2000 QD 5.25" disks, Tandy mixed density 8" disks, and PC compatible disks. What ImageDisk can't handle I save for the catweasel. Kelly

18 years, 5 months

Documentation for HP Nighthawk 20mb drive

by vp＠drexel.edu

ard at p850ug1.demon.co.uk (Tony Duell) wrote: > [...] it should be possible to make, say, a module with an HPIB port on > one side and SCSI on the other. It would respond to CS/80 or SS/80, and > talk to a normal SCSI drive. I am suprised nothing like this exists [...] Actually the IEM-4400 has a SCSI DAT tape drive and a board to interface it to HP-IB. I wonder if that board can be made to connect a SCSI *disk* to HPIB (probably need a new ROM though which will make the project more expensive than building everything from scratch). Regarding the HP Nighthawk drive I have one too (it was inside a 9153A box). When I bought the 9153A I assumed I'd find a standard drive inside (disappointed...). Once I saw the custom drive I decided not to bother with that drive (no way of repairing it, or recovering data stored on it). Unfortunately I was proven right, as the drive gave up the ghost. The Nighthawk drive now shorts the power supply. If you remove the hard disk, the 9153A powers up, but with the drive connected, nothing comes on, and a resistor on the drive begins to smell! :-( **vp

18 years, 5 months

Troubleshooting video

by compoobah＠valleyimplants.com

I'm not looking for a potted answer here - just ideas for where to look. Is ~28KHz a common HSYNC frequency? seems too low for anything I've seen. What else should I look at for a non-syncing monitor? USENET seems to indicate 48.8 KHz HSYNC on these old SGI monitors (SGI employee posting), so I'm not sure where the ~28 KHz is coming from- is this crystal or RC controlled? There are about 9 boards in the graphics half, I suppose sync is generated on the last one (in this case the DC4 display controller) - no crystals there. Common failure on old framebuffers? any tips? tony?

18 years, 5 months

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test-drb July 2006