test-drb June 1997

test-drb@ccmp.vtda.org

115 participants
569 discussions

Archive file formats (RE: Archiving Stuff)

by BROBSTONA＠wartburg.edu

>> Compressed 1-bit, 300 dpi TIFF for schematics >> - Almost everything supports TIFF, including tons of shareware and [technical stuff snipped] >I'm not so sure that "everything" supports TIFF. After a little looking, >I couldn't even find a TIFF file to test with xv. Is there anything for either OpenVMS/Alpha (No DEC/X-windows) or the Apple IIGS that can read TIFF? >> RTF (Rich Text Format) for text documents that use formatting >> - WordPerfect, Word, WordPad, etc. will save in this format How about HTML? That would likely be more readable for my shell account (though not all formatting would be displayed in Lynx). I suppose I could walk over to the computer lab and use a Mac or a PC if I *had* to. :) -- Andy Brobston brobstona(a)wartburg.edu ***NEW URL BELOW*** http://www.wartburg.edu/people/docs/personalPages/BrobstonA/home.html My opinions do not necessarily reflect the opinions of Wartburg College as a whole.

26 years, 11 months

Archive file formats (RE: Archiving Stuff)

by kaikal＠MICROSOFT.com

Hey, figuring out standards like this is what I do. I recommend: JPEG for photo scans (brochures, ads, etc.) - It's the Internet photo file format standard Compressed 1-bit, 300 dpi TIFF for schematics - Almost everything supports TIFF, including tons of shareware and Wang's free image processing add-on for Win95 (http://www.microsoft.com/windows95/info/wang.htm) - 1-bit means monochrome (not grayscale). Use JPEG for images. - Images should be 300 dpi, 8 1/2" x 11", i.e. 2550 x 3300 (don't worry about scanning white space, it takes no space at all when compressed) TXT for text documents that don't use formatting - 80-column with carriage returns please RTF (Rich Text Format) for text documents that use formatting - WordPerfect, Word, WordPad, etc. will save in this format Kai > ---------- > From: Bill Whitson > Reply To: classiccmp(a)u.washington.edu > Sent: Wednesday, June 25, 1997 1:05 PM > To: Discussion re-collecting of classic computers > Subject: Archiving Stuff > > Hi all. > > Consider Classiccmp Web/FTP open for your archiving pleasure ;). > > The process has been more or less tested out and is ready to go. > Submissions of Software, Documentation, ROM code, whatever are all > OK. > > What really remains to be done is to work out standards for file > formats. I'll let those of you who are experts on specific platforms > argue that out. I'll follow whatever ensues and firm up some > guidelines. > > To submit something you need to download the form DS-form.txt from > the FTP site (140.142.225.27) and fill it out to the best of your > ability. Follow the instructions at the bottom of the form for > uploading. > > All the form does is provide evidence (if anyone ever complains) that > I'm not just uploading copyrighted material without a care. > > Anyway - if you're itching to archive stuff feel free. Your comments > are welcome and also unavoidable ;) > > Bill > > ---------------------------------------------------- > Bill Whitson - Classic Computers ListOp > bill(a)booster.u.washinton.edu or bcw(a)u.washington.edu > http://weber.u.washington.edu/~bcw > >

26 years, 11 months

TRS-80 Model I info (RE: MSX, TRS-80, Colour Genie, etc.)

by allisonp＠world.std.com

> The Model I originally shipped without a numeric keypad. To the right Correct. > of the main keyboard was a rectangular keypad-size plaque reading "Radio > Shack TRS-80 Micro Computer System". The numeric keypad was added to > later models, and was available as a retrofit kit for around $50. With > the numeric keypad installed, the nameplate was moved to a horizontal > plaque above the keyboard. Also correct. > > The TRS-80 Model I lineage includes: > > Model I, 4K, Level I BASIC > - This is a 3-piece system with the computer in the keyboard. It > includes the system keyboard/cpu, monitor, tape drive (actually a > rebadged regular Radio Shack portable cassette deck with no > modifications), and power supply brick. Level I BASIC is similar to > Tiny BASIC. I still have my Level I BASIC reference manual. The Basic was an 4k microsoft basic with floating point and simple arrays but no alphanumeric operators or transcendental functions. Tiny basic was an integer language of less than 4k. > Model I, 16K, Level II BASIC > - The 16K and Level II upgrades went together. 16K is the maximum Model > I memory in the system unit (8x 4116 DRAMs). Level II BASIC is similar wrong. Either could be installed alone. Generally LII with 4k was pretty cramped. FYI: the LII romset was only 12k. > to Microsoft BASIC/80 with functions added for things like the TRS-80's > 128x48 memory-mapped monochrome graphics. It was MS12k basic with TRS extensions (graphics). >Level II also added a > keyboard debounce routine--Level I machines were very difficult for > typists. The key bounce was a bug in the original 4k software, it didn't wait long enough. There was a cassette that when loaded fixed it. Me I'd clean the key contacts with a swab and some contact cleaner and get the same result. > - Expansion Interface > Matching silver color, acts as a monitor stand, connects to system unit > via ribbon cable. Contains dual floppy controller (WD chip), sockets > for an additional 32K (2 banks of 4116 DRAMs) for a system maximum of > 48K, and a parallel connection. 16K ROM BASIC occupied the remainder of > the address space. The expansion interface also contains a card bay for > an RS-232 interface. The bottom 16k was 12k of rom (LII basic) 1k of ram for video and keyboard mapped in to memory space. Some of the 4k space for the video and keyboard was wasted due to partial decode. The upside was since the keyboard was scanned by the cpu so alternate shift and character sets were easy to do. The down side is no matter how you tried, keyboard type ahead was impossible, the keyboard could not interrupt the CPU. > - RS-232 interface board > For expansion interface. The surface connector used was very cranky. > - Floppy drives > Single-sided single-density, approx. 90KB free space. The design used the 1771 internal data seperator which was not very tolerent of drive spped errors or data jitter. > - Lower case upgrade > Provides lower case capability. Way late in the game the "field mod" had been around over a year before tandy did it. > - Numeric keypad retrofit > As discussed above Popular item! > Known TRS-80 Model I problems: > > - Unreliable cassette interface. Radio Shack later released a > modification that improved this somewhat. The best option is a > third-party unit called the Data Dubber by Microperipheral Corporation > (I worked there!) that went in between the system unit and cassette and > squared the wave. There were two mods one largely marginal, the later one was very effective. I had a mod I did that worked very well and was far simpler. > - Wonky, unbuffered connection to Expansion Interface. This went > through various modifications, and some cables you'll see have big > buffer boxes in the middle. Later Expansion Interfaces had built-in > buffering. Some bought third-party expansion interface clones from Lobo > and others. Be very careful if you get an Expansion Interface without a > cable. It might need the buffered cable, and it would be a pain to > manufacture. The first version with the unbuffered or buffered cable was a junk design. the later one with local ras/cas timing was far better. > - Bad data separator chip. The stock data separator was unreliable. > Most people replaced theirs with a third-party improvement such as > Percom's. The stock circuit depended on the 1771 chips internal seperator, Even WD the chipmaker said don't do it! > - Unreliable connection for the Expansion Interface-mounted RS-232 > board. This board slipped over vertical post connections and never made > good contact. Most folks used third-party alternatives that worked off > the cassette port. Being there at the begining was half the fun. Allison

26 years, 11 months

Lisa's scores

by allisonp＠world.std.com

> > really think the engineers blew it. The original OS is too innovative, > > so much that the computer is nearly unuseable. > > I wouldn't think that "too innovative" would result in a lesser rating fo > "technical" aspects (at least in the realm of computer history/collecting > the "real" world is a different matter (see "success"...)) Lest we forget the LISA was the Prototype system for the mac! Allison

26 years, 11 months

MSX, TRS-80, Colour Genie, etc.

by manney＠nwohio.nwohio.com

> I am looking for > > IBM PC Junior > Apple II > TRS-80 (model I) I think I have a couple of trash-80's in the back room. One with disks, one without. Do they say "model 1"? (I don't know these at all) Does have a Lisa he/she wants to unload? I also have several, nice-condition Commodore boxes that I'd hate to pitch. As long as we're in the subject of trading, I have several years of PPC (HP programmable calculator user group) that I'd *love* to find a home for of...absolutely fascinating stuff, including the origin of Ulam's conjecture.

26 years, 11 months

Archive file formats (RE: Archiving Stuff)

by thedm＠sunflower.com

Whats wrong with plain old ascii text. ---------- > From: Paul E Coad <pcoad(a)crl.com> > To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> > Subject: Re: Archive file formats (RE: Archiving Stuff) > Date: Wednesday, June 25, 1997 8:47 PM > > > Kai, > > Nice initial stab at some standards. I am a little concerned that this > is a bit PC-centric. I would like to make sure that those of us on the > fringe (not using Windows machines or Macs) don't get left out. This > may mean lowering the standards to be a little more inclusive. > > Maybe these are all cross-platform standards, I don't know. Can any of > the VMS/AmigaOS/TOS/whatnotOS people read and write all of these formats? > > I'm not trying to start a religious war. I want to be able to make use > of and possibly contribute to the archive. > > On Wed, 25 Jun 1997, Kai Kaltenbach wrote: > > > Hey, figuring out standards like this is what I do. I recommend: > > > > JPEG for photo scans (brochures, ads, etc.) > > - It's the Internet photo file format standard > > xv can be used to view these so Unix/X is covered. > > > > > Compressed 1-bit, 300 dpi TIFF for schematics > > - Almost everything supports TIFF, including tons of shareware and > > Wang's free image processing add-on for Win95 > > (http://www.microsoft.com/windows95/info/wang.htm) > > - 1-bit means monochrome (not grayscale). Use JPEG for images. > > - Images should be 300 dpi, 8 1/2" x 11", i.e. 2550 x 3300 (don't worry > > about scanning white space, it takes no space at all when compressed) > > > > I'm not so sure that "everything" supports TIFF. After a little looking, > I couldn't even find a TIFF file to test with xv. > > Is there a reason that postscript cannot be used? Most of the schematics > out there that I have seen have been postscript files. > > > TXT for text documents that don't use formatting > > - 80-column with carriage returns please > > Text is good. > > > > > RTF (Rich Text Format) for text documents that use formatting > > - WordPerfect, Word, WordPad, etc. will save in this format > > > > Is there anything under Unix which can read and/or write RTF? > > Why not use postscript for publishing the formatted documents? > > --pec > -------------------------------------------------------------------------- > Saved From The Dumpster Collection: http://www.crl.com/~pcoad/machines.html >

26 years, 11 months

Computer Trivia Game

by sinasohn＠crl.com

At 11:03 PM 6/24/97 -0400, you wrote: >I'm a trivia freak, and computer trivia's fun. Old computers are great Anyone remember a trivial-pursuit-like Computer Trivia game? It was being touted at one of the last West Coast Computer Faires here in San Francisco. Anyone have a copy? --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad sinasohn(a)crl.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.crl.com/~sinasohn/

26 years, 11 months

Lisa's scores

by sinasohn＠crl.com

At 08:38 AM 6/25/97 -0400, you wrote: >technical - foul - It seems that the Lisa should do better here, but I > really think the engineers blew it. The original OS is too innovative, > so much that the computer is nearly unuseable. I wouldn't think that "too innovative" would result in a lesser rating for "technical" aspects (at least in the realm of computer history/collecting; the "real" world is a different matter (see "success"...)) --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad sinasohn(a)crl.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.crl.com/~sinasohn/

26 years, 11 months

Convergent Technology Computers

by sinasohn＠crl.com

At 11:33 PM 6/24/97 -0400, you wrote: >And don't forget the Workslate from Convergent. It was the slickest laptop Anyone know where to find one of these? I'd sure like to add one to my collection! --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad sinasohn(a)crl.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.crl.com/~sinasohn/

26 years, 11 months

Apple II (wasDumpster Diving)

by BigLouS＠aol.com

In a message dated 97-06-22 05:13:35 EDT,maynard(a)jmg.com (J. Maynard Gelinas) wrote: > I have an opportunity for an original Apple II. Keyboard > works, the system prom boots, but unfortunately he lost the disk > controller. He still has the old full height 5 1/4" drive, however. This > thing is quite dirty, and a few keys will have to be cleaned carefully > with alchol, but it looks good. I'm curious to know if I need to find > anything other than the floppy controller. Didn't Microsoft Basic come on > a prom card? Or was that on the floppy controller card? Or was there at > one point a mixed controller/BASIC card? Any Apple disk II controller will work. Apple originally offered an Integer basic card (which contained integer basic in rom) for the Apple II+ series. This solution was replaced by the 16K language card in slot 0. As part of the boot up sequence DOS 3.3 would determine which basic was resident in rom and load the other basic into the 16K on the language card. There was no mixed controller/basic card. Language cards are plentiful and cheap so you should have no trouble finding one. Hope this helps. Lou

26 years, 11 months

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test-drb June 1997