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by Fred Cisin

UCSD P-system could only allocate contiguous disk space. So a disk that had become "checkerboarded" by writing and deletng files had to be defragmented, using a spplied utility called "Crunch". Was that adequately protected against catastrophes caused by interruption? Softech and UCSD Regents filed trademark registration for "XenoFile", and listed it as a product, but as near as I can tell, NEVER sent out any copies. (February 1987, I went to the Patent and Trademark Office outside of Washington, Dc, and researched some trademarks, in preparation for my trademark registration) They also announced a "universal disk format" for ALL machines, but never had a clue about how to do anything compatible with FM, MFM, and GCR.

2 years, 2 months

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Re: Random items on Pascal #2

by Fred Cisin

> The SAGE II that had native Pascal (68000) was > not a popular machine. Waterloo Pascal on the SuperPet....Pascal never > really made it on the microcomputer platform did it? Bob Wallace (Microsoft's tenth employee) wrote the Micorsoft MS-DOS Pascal compiler. He told me not to use the runtime library, which was also then included with Microsoft Fortran, etc. Later, he left Microsoft when an appointment became necessary to talk to billg, and formed "Quicksoft", selling PC-Write (a significant player in "shareware")

2 years, 2 months

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Re: Random items on Pascal #1

by Fred Cisin

Did not make it to the list, so I am breaking it up and re-sending it in pieces > Without doing the research before asking, there was the UCSD p-System > Pascal for IBM PC which came out very early in the history of the IBM PC. > It was not very popular. In the original 5150 launch (August 1981), the operating systems announced were availability of PC-DOS and/or UCSD P-System, and CP/M-86 was "coming soon".

2 years, 2 months

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Altair 8800 50th birthday...

by William Sudbrink

Based on what I have read, along with a few discussions I have had with people involved in the early S-100 "scene" around now is the 50th birthday (or conception day) of the Altair 8800. Certainly, next year could properly be called its 50th birthday. Anyway, I'm thinking about "painting the show blue" with Altairs and IMSAIs for the next few vintage computer festivals. Anyone else interested? Bill S. -- This email has been checked for viruses by Avast antivirus software. www.avast.com

2 years, 2 months

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Last Buy notification for Z80 (Z84C00 Product line)

by Peter Schow

In case you missed it, Zilog has issued a Last Buy notification for the Z80: https://www.mouser.com/PCN/Littelfuse_PCN_Z84C00.pdf Looks like Mouser and Digikey still have decent inventory of them.

2 years, 2 months

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Recordak Magnaprint Microfiche Printer Free

by Don

Hello all, I have a Recordak Magnaprint microfiche printer/reader. It appears to be in decent cosmetic condition but I am not sure if it works or if it is complete. This thing used photosensitized paper and some kind of developer to make positive copies of microfiche reels or sheets. https://archive.org/details/TNM_Recordak_Magnaprint_Reader_microfilm_reader… I don't have space to keep this thing, but I would like to save it from being scrapped if possible. Free for pickup near Buffalo, NY. Contact me if interested! Don

2 years, 2 months

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What to take to a vintage computer show

by brad＠techtimetraveller.com

Just reaching out to anyone who has exhibited at a vintage computing festival before. After years of only being able to watch others attend the ones that happen in the US, we are finally getting one in BC here. Super excited. I was invited both to speak and to exhibit, and they even got me two tables which is awesome. Like, how do you prepare for these things? What things that you didn't think of going into your first show do you wish you had? I have a pretty eclectic collection, and some really rare stuff (like my Mark-8s) that I'd love to bring but am hesitant about due to the risks of transportation damage and theft (from the car mostly, not the convention itself). Just trying to decide what to bring and how focused to be in terms of theme. Brad

2 years, 2 months

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Re: Double Density 3.5" Floppy Disks

by Don R

Maybe I need one of these power cords for my Monroe-Litton 1830 aka Compucorp 485. It might make the calculations more precise? ;) Don Resor Sent from someone's iPhone > On May 6, 2024, at 8:55 PM, Chuck Guzis via cctalk <cctalk(a)classiccmp.org> wrote: > > On 5/6/24 20:25, Fred Cisin via cctalk wrote: > https://www.ebay.com/itm/134706639303 >> include a basic feature for rewinding rental DVDs before returning them. > Of course, you need a pure silver AC cable for those: > > https://www.ebay.com/itm/115970049389 > > --Chuck

2 years, 2 months

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Re: Altair 8800 50th birthday...

by Smith, Wayne

"November 19, 1974" is what is written on the "Date of Publication of This Issue" line in Copyright "Form B" (for periodicals) used at the time. The form then states "The copyright law defines the 'date of publication' as '. . . the earliest date when copies . . . were placed on sale, sold or publicly distributed." The form is then signed pursuant to 17 U.S.C. sec. 506(e), which provided for a substantial fine in the event that any false representation was made on the form. There is no reason to doubt the date of publication in the notice. In fact, there is every reason to believe it is correct. In the magazine business it is a routine business practice to have actual publication occur months prior to the "cover date" the publisher places on the magazine. The reason for this is so that the magazines could remain on the newsstands for at least a few months without appearing to be stale. This is particularly the case with magazines published on a monthly cadence. Just as a check, I looked up the publication date of the January 1975 issue of Playboy. According to the copyright registration, it was November 20, 1974. > Date: Mon, 6 May 2024 01:27:28 +0000 (UTC) > From: ED SHARPE <couryhouse(a)aol.com> > Subject: [cctalk] Re: Altair 8800 50th birthday... > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk(a)classiccmp.org> > Cc: Sellam Abraham <sellam.ismail(a)gmail.com> > Message-ID: <1726519925.3966543.1714958848839(a)mail.yahoo.com> > Content-Type: text/plain; charset=UTF-8 > > Perhaps After doing the layout work in the November it was perhaps > copyrighted Immediately during layout But it did not ship Until January > Think! back in those days things did not instantly happen and we're instantly > shipped Ed# > > Sent from AOL on Android > > On Fri, May 3, 2024 at 7:09 AM, Sellam Abraham via > cctalk<cctalk(a)classiccmp.org> wrote: On Fri, May 3, 2024, 1:28 AM Smith, > Wayne via cctalk <cctalk(a)classiccmp.org> > wrote: > > > I looked up the Jan. 1975 issue of Popular Electronics in the > > Copyright Office's Periodicals Digest. It was published on Nov. 19, > > 1974 if you are looking for an actual anniversary date. > > > > The January issue was certainly not available in November of 1974. > > When did it actually get sent out and start showing up in people's mailboxes? > > Sellam >

2 years, 2 months

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Vintage Computer and Technology Swap Meet - Wall, NJ - June 22, 2024

by Jeffrey Brace

Same place as last year in the big parking lot across from Brookdale and down the street from InfoAge Science and History Museums. We have the Southern Monmouth County Firehouse museum selling food and drinks in the middle. This is a fundraiser for both museums (VCF and Firehouse museum) which are both part of InfoAge. All the info is here: https://vcfed.org/vcf-swap-meet/ Thanks! Jeff Brace VCF Mid-Atlantic Event Manager Vintage Computer Federation is a 501c3 charity

2 years, 2 months

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