test-drb

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101090 discussions

by john_finigan＠yahoo.com

silvercreekvalley wrote: > I'm looking to upgrade my current LCD panel 'collection' > to something that will cope a bit better with the various > classic systems I have. > > The main thing is that the panel should be able to sync to > a very wide range of signals. I have a 2+ year old Sceptre X9G-NagaV which understands signals >from both a Sun GX framebuffer and a SGI Indigo2 framebuffer. This is through my particular 13W3 adapter; I don't know if it would be true with every 13W3 to VGA pinout. It's a 1280x1024 LCD, and the SGI looks good, but the GX looks nasty because the GX can only do 1152x900, as far as I can tell, and the scaling is hard to look at. I also have an slightly newer Acer AL2216W widescreen, 1680x1050 native. Surprisingly, it understands the GX output and looks better than the Sceptre scaling from 1152x900. Never tried it with the SGI. John Finigan

16 years, 3 months

Museum for sale

by mwichary＠gmail.com

> > My dictionary says a museum is "A building used for storing and exhibition > of objects...". Not much exhibiting going on in this "museum". I think a > museum is only a museum if the public can go there and see the physical > objects. I don't think a web site can be a museum, unless the "objects" are > software or other purely digital artefacts. > However, definitions change, and dictionaries will lag behind technology almost by definition. Is Amazon a store? Marcin

16 years, 3 months

Museum for sale

by feedle＠feedle.net

On Jan 22, 2010, at 10:25 AM, Rob Jarratt wrote: > My dictionary says a museum is "A building used for storing and exhibition > of objects...". Not much exhibiting going on in this "museum". I think a > museum is only a museum if the public can go there and see the physical > objects. I don't think a web site can be a museum, unless the "objects" are > software or other purely digital artefacts. So, buy the collection and make one. Problem solved.

16 years, 3 months

PROMAC 2A Eprom Programmer

by enrico.lazzerini＠tiscali.it

Hello at all, i have the programmer from many years in a box. Its firmware make work it in automatic way so it is not possible (or almost this is aall i know) to drive it from its buttons. When i power on it, it trys to send somenting via its serial RS232 to the host computer. I checked the serial port for a null modem way to work and if i load hyperterminal i see some unknow characters on the screen, and if i push a key on the keyboard i see that something goes via serial to the programmer. If i try to change the serial speed or character lenghts or its parity the characters on the screen not become intellegible. At the end if i try to load its original DOS program (not in a window of windows XP, but making a DOS 3.3 boot!) after done the check i said, neither the DOS software can drive the eprom programmer. Here all information i found across internet: <http://elazzerini.interfree.it/Promac%20Model%202A.htm> http://elazzerini.interfree.it/Promac%20Model%202A.htm Thanks for any suggestions. Enrico

16 years, 3 months

Altair 680, up and running

by billdeg＠degnanco.com

Bill, You could port VTL (very tiny language) "BASIC" into 1K, the code and the address instruction listing is in The Altair Yahoogroup files section ((I think)), or I may have the machine instructions handy if you need them. You can burn VTL onto the remaining 3 PROM slots on the board and then use a serial connection to dump programs into the computer at the VTL Prompt. THere are also sample programs from the Yahoo group. Or you can make a 8K board for the 680 so you can load MS BASIC for the 680 >from tape. Bill > > With the 4702 replaced, the monitor is active on the serial > port. Now to find some _SMALL_ programs to push to it. > > Thanks to all for the power supply help. > > > > End of cctech Digest, Vol 77, Issue 24 > **************************************

16 years, 3 months

Altair 680, up and running

by wh.sudbrink＠verizon.net

For anyone interested, after the power supply referb and chip reinstall the 680 was not fully functional. The front panel seemed to work properly, but examining page zero revealed that one of the 2102 RAMs was dead. This wasn't surprising and a quick replacement had front panel deposit and retrieval to RAM fully operational. Examining the contents of the 1702 EPROM with the front panel showed that the monitor code was in tact, but nothing was coming out of the serial port when the unit was reset. Looking around on page zero with the front panel after a reset revealed that the monitor code was running, so probably something was wrong with the serial port. I put a scope on the chip select lines of the UART and could see the monitor code polling for inbound characters. Was the UART dead? On a lark I put a probe on the receive clock pin of the UART. Nothing. I put it on the crystal. It was making a good signal. Turns out the 4702 bit rate generator was dead. It seems to me that that is a very odd component to fail. What surprised me even more was that I happened to have a tube of 4702s in my "random chips" box. I have no idea where I got them. I've never worked with a 4702 until now. The only small drawback is that the date codes on these 4702s are 1982. All of the other chips in the 680 have 1975 and 1976 date codes, including the 2102 I replaced. With the 4702 replaced, the monitor is active on the serial port. Now to find some _SMALL_ programs to push to it. Thanks to all for the power supply help.

16 years, 3 months

DEC RZ drives

by useddec＠gmail.com

If anyone needs some DEC RZ drives please contact me off list. Thanks, Paul

16 years, 3 months

Part Number for a MicroVAX II Fan

by emu＠e-bbes.com

Rob Jarratt wrote: > I have a fan in my MicroVAX II which sometimes does not start without a > push, which means that I can't really put the machine back in its external where are you located ? I probably could find a spare (used) one ...

16 years, 3 months

VSV11 on pdp11, was : Re: OLPC [Was: Something completelydifferent]

by dlwfanservice＠sbcglobal.net

-----Original Message----- From: Henk Gooijen <henk.gooijen at hotmail.com> Sent: Thursday, January 21, 2010 13:06 To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Subject: Re: VSV11 on pdp11, was : Re: OLPC [Was: Something completelydifferent] From: "Zane H. Healy" <healyzh at aracnet.com> Sent: Thursday, January 21, 2010 6:52 PM To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: VSV11 on pdp11, was : Re: OLPC [Was: Something completelydifferent] > > On Thu, 21 Jan 2010, Pontus Pihlgren wrote: > >> I'm curious though, what software took advantage of the VSV11? > > I know support exists for RSX-11M+, but that is about all I know. > > I have one 3rd party PDP-11 video card, and while most likely have RSX-11M > software for it, I lack the means to actually hook it up to anything (or > anything to hook it up to). > > Zane Yes, memories are coming back. The 11/23+ to which the VSV11 was hooked up ran RSX-11M+. Later I regretted giving the system away. I never got a copy of RSX-11M+. The system also had a DEC-made joystick with 2 push buttons on top, one at each side (left and right) of the joystick. I still have that joystick, but it is in bad shape. The covers over the push buttons are badly worn. The VSV was connected to a heavy BARCO monitor (metal housing) with R-G-B BNC connectors. The system was used for typesetting and graphics design work in a company that printed (offset press using ink) customer envelopes. - Henk.

16 years, 3 months

Part Number for a MicroVAX II Fan

by robert.jarratt＠ntlworld.com

I have a fan in my MicroVAX II which sometimes does not start without a push, which means that I can't really put the machine back in its external enclosure. I have been unable to find an illustrated parts breakdown to give me a part number for the fan, so I was wondering if anyone here knows the part number, or has a suggestion for how to get the fan to work properly again. The machine is in a BA23 enclosure and it is the front fan which does not work well. Thanks Rob

16 years, 3 months

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