test-drb February 2011

test-drb@ccmp.vtda.org

155 participants
210 discussions

Modern Business Machines for Writing, Duplicating, Recording, etc. (1947)

by legalize＠xmission.com

FYI, came across this film at archive.org today. <http://www.archive.org/details/modern_business_machines_for_writing> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

13 years, 10 months

OpenVMS hobbyist license site expired?

by glen.slick＠gmail.com

I was going to do some VAX VMS tinkering today and my hobbyist licenses have expired. I thought this is where I got the licenses last time around but now the domain name appears to have expired: http://www.openvmshobbyist.com Anyone know anything about that? Is there somewhere else to get licenses now?

13 years, 10 months

Micropolis1355 to 1325 (RD53) conversion

by useddec＠gmail.com

I have a few Micropolis 1355 drives I am looking into converting into 1325 drives. Has anyone know how, tried to, or ever done this? Is the HDA the same? Can the logic board be modified, or does it have to be replaced? Any info would be greatly appreciated. Thanks, Paul

13 years, 10 months

OT: american vs european 220 (Tony Duell)

by jonas＠otter.se

> > But it is online here. > > http://www.r-type.org/static/mull-cir.htm > > Is it? > > Firstly, I could find several links to download bits of the book, but no > link to download the whole thing and I don't think all sections are > available to download separately. I couldn't find the series-heater-chain > AC/DC mains amplidier or the tape amplifier for example. > > Secondly, this is not the book we are talkign about. This is the second > one that the OP already has. For the <nth> time, there is an earlier > book, with only 2 main amplifiers (5-10 and 5-20), their preamps and an > FM tuner/. No tape amplifier, no 3-3, etc. And the FM tuner was removed > from the later book which is why the OP wants to find the older one I > believe. Indeed. Sadly the link points to pages containing bits of the book I already have. It's the older one I am interested in, for the FM tuner. Jonas

13 years, 10 months

Tektronix 4010/4014 terminal printer project

by bqt＠softjar.se

On 02/10/11 21:38, Brent Hilpert<hilpert at cs.ubc.ca> wrote: > On 2011 Feb 9, at 2:17 AM, Christian Corti wrote: >> > On Tue, 8 Feb 2011, Brent Hilpert wrote: >>>>> >>>> For that matter, how big are the pixels? >>>> >>> There aren't any pixels. >>> >> >>> >> I know what you mean here, so not to argue your point about the >>> >> analog process in the system under discussion, but I would like to >>> >> add an historical footnote: even analog raster-scan systems were >>> >> characterised in terms of "picture elements" going back to the very >>> >> early days of TV. >> > >> > That's exactly the point: those Tektronix terminals/computers are not >> > raster-scan systems, you draw a line from here to there. The only >> > "limitation" is the addressing range for the start and end point >> > (either 10 or 12 bits). Speaking of the printer, AFAIK it's the >> > printer that determines the scanning speed and the resolution of the >> > rasterization process. > (And ultimately that 10 or 12 bits does place a maximum on the V*H > resolution of the drawn image.) I hope you understand that a line drawn from one point to another point does not form discrete points. It will be a straight line, not a series of discrete pixels along that straight line. You will not the the "traditional" moiree pattern if you were to draw lines in a spread from a certain point, as you would on a pixel based display. The 12 bit resolution sets a limit to where you can place the beam, but on a line between points, it can be at coordinates that cannot be expressed in 12 bit coordinates. Johnny

13 years, 10 months

Phantom of the Floppera

by jfoust＠threedee.com

http://www.youtube.com/watch?v=dmoDLyiQYKw - John

13 years, 10 months

C64-C128 CP-M Cartridge Interest

by lynchaj＠yahoo.com

________________________________ On 12/24/10 5:40 PM, Gene Buckle wrote: >>> I wouldn't mind a CP/M standalone if it was cheap. Most of the CP/M >>> machines of the era are either recycled or need some repairs by now. >> >> N8VEM is a really nice machine.. >> > Unfortunately, nobody is kitting them. They're dead easy to assemble. The only "problem" components are the unreasonably large EPROM and SRAM chips, and even they aren't too tough to find. -Dave -- Dave McGuire Port Charlotte, FL -----REPLY----- Hi! Due to numerous builder requests, we fixed the RAM/ROM size issue with SBC V2. SBC V2 accepts 28 and 32 pin ROMs (EPROM, PROM, EEPROM, or Flash) which is pretty much anything from a 27256 to a 29C040 or 27C080. You could probably go smaller if you want although I haven't tested it myself. Also the RAM accepts 512KB or 128KB SRAMs. All set with config jumpers. There are several other improvements which fixed several bugs from SBC V1. Maybe what is needed for the C64 CP/M cart is a expansion port to ECB interface board. Then plug in an N8VEM SBC, SBC-188, or whatever and use the ECB peripheral boards along with your C64. We have a 6809/6802/6502 to ECB bridge board that might be a basis. Make the C64 appear as an IO port on the ECB and as a memory mapped IO on the C64. Plug in SBC V2 for your CP/M-80 cartridge or SBC-188 V1 for the CP/M-86. Just an idea. Back in the day, I used to have a C64 with a CP/M cartridge. It was great -- Nevada FORTRAN rocks! Thanks and have a nice day! Andrew Lynch

13 years, 10 months

Onyx2 cube

by legalize＠xmission.com

Picked up an Onyx 2 cube from university surplus today for a lowball bid of $50. Yay! -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

13 years, 10 months

Jay needs a ZFS expert

by aek＠bitsavers.org

Jay called me a couple of hours ago looking for some help with ZFS. The classiccmp file system is acting up, which of course effects bitsavers and the other hosted sites. I didn't know the mailing list was still working, or I would have posted sooner.

13 years, 10 months

Good new about Turbodos

by aek＠bitsavers.org

From comp.os.cpm The search is on for sources, time to start turning over rocks... -- From: Per Frejvall <turbodos at frejvall.se> Newsgroups: comp.os.cpm Subject: TurboDOS is now free! Date: Thu, 10 Feb 2011 14:14:52 +0100 Bearer of good news, it is good to be! Message from Mike Busch, co-founder of Software 2000 and creator of TurboDOS: "Per, Software 2000, Inc. Is no longer enforcing its copyright on TurboDOS. Have fun with it, and thanks for asking. Mike" Unfortunately, they don't have any copies of the sources. We'll have to disassemble if we want to hack it. I will, in a short while, prepare a complete download package and send it to Gaby and Peter Schorn. /per

13 years, 10 months

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test-drb February 2011