test-drb February 1998

test-drb@ccmp.vtda.org

147 participants
783 discussions

Commodore tape and disk speed (was: Commodore Ramblings)

by Philip.Belben＠powertech.co.uk

A friend and I wrote a game for 6502 machines. Versions exist for BBC B, Acorn Electron and C64. The load module in each case is 20k bytes. I haven't got a full list of time taken to load - must do that sometime! - but on the Commie 64 it was one minute on the 1541 and SEVEN minutes on the tape (same tape system as PET, BTW - among other things, saved everything twice.) The BBC disk system was much faster - but you only got 100K or so on a disk, and a file had to occupy a contiguous chain of blocks. Philip.

26 years, 10 months

Junk nite

by chemif＠mbox.queen.it

At 08:24 18/02/98 +1100, you wrote: >Just curious if I should really keep this rather well designed computer >Its an "Olivetti M24 Personal Computer". Yes, the design was "original" (=completely different) for a X86-flavour based machine;specially inside where the layout is spread on three boards:CPU, VIDEO, 8 bit ISA.(have you openened it yet?) Do you have the original keyboard also? > I'd never seen an Olivetti before, which is why I saved it from the scap heap. Now is >it scarce or nice enough to attempt to get running? It depends on what you are looking for? As "collectible" can be interesting because of its early solutions on monitor power supply (1 plug with signal and DC-PS toghether) and its design. Otherwise is another obsolete PC as many other of that age. Ciao ???????????????????????????????????????????????????????????????????????????? ? Riccardo Romagnoli,collector of:CLASSIC COMPUTERS,TELETYPE UNITS,PHONE ? ? AND PHONECARDS I-47100 Forli'/Emilia-Romagna/Food Valley/ITALY ? ? Pager:DTMF PHONES=+39/16888(hear msg.and BEEP then 5130274*YOUR TEL.No.* ? ? where*=asterisk key | help visit http://www.tim.it/tldrin_eg/tlde03.html ? ? e-mail=chemif(a)mbox.queen.it ? ????????????????????????????????????????????????????????????????????????????

26 years, 10 months

Commodore Ramblings

by fmc＠reanimators.org

Sam Ismail wrote (after Larry Anderson I think): > > (note, 1525 uses THIN paper not 9 1/2" form feed, a misunderstanding in > > the design specs, they thought 8 1/2" wide WITH the carrier.) > > Ok, now that is just plain lame. Who the hell designs a printer and > forgets about the tractor feed bands? Integral Data Systems, makers of the Prism and the Paper Tiger. The Paper Tiger was rev 2. Rev 1 was this...thing...called the BrighterWriter aka the IP-125 (text only) and IP-225 (with bit-mapped graphics). I used to have one. I can't remember what I did with it and don't think I want to be reminded. It was really underwhelming and without charm. Narrow paper path, lame tractors that didn't pull the paper worth a darn, dain-bread graphics support (send a ^C I think to enter graphics mode, then the characters you send go straight to the pins on the print head -- one bit per pin, send another ^C to get out, and no there was no way to escape ^C to send 0x03 to the pins). At least it took the same ribbons that went in a model 33 Teletype. -Frank McConnell

26 years, 10 months

Here's another 11/23+ question...

by DSEAGRAV＠toad.xkl.com

How do I enable the console halt-on-break? Is there a switch on the CPU board for that? It's the M8189 11/23+ CPU. -------

26 years, 10 months

Anyone want a Cray

by adam＠merlin.net.au

How often do these come up for sale? A Cray, about 6 or 7 years old, apparntly, is being sold in Australia. They're asking $100,000, which puts it a tad out of my range. :) However, if it isn't sold it will be scrapped - I wonder if they will accept a couple of cartons of beer over whatever the scrap offer is? Anyone want it? :) Adam.

26 years, 10 months

Great find

by jrkeys＠concentric.net

Today I stopped at Goodwill and found a new unopened copy of A,T&T's ver 3.51 system software and four manuals for the Unix PC for $4. This after getting UnixPC a few months back that was password protected and I could not get in to the hard drive. Now I will get from storage and hope these diskettes are still readable after 11 years sealed in plastic.

26 years, 10 months

Subject: Re: RSTS/E on a PDP-11?

by rcini＠email.msn.com

On Tue, 17 Feb 1998 09:07:43 -0800 (PST), Tim Shoppa <shoppa(a)alph02.triumf.ca> wrote: > >>What sort of packs? What commands were you issuing to read them? > >>What OS did you try to read them from? What error message did you get > >>when it failed? > > >They're RK05 packs, inserted in the DK2: device. I booted from DK0: with > >RT-11 v.4 and used "dir dk2:" to read the disk directory. Although I > >don't remember the specific error, it's something like "invalid > >directory." > Yep. As you've just discovered, the RSTS/E directory structure is >different than RT-11's. >You can still read raw blocks from the disk, though. Try doing >a DUMP/TERM/RAD50 DK2: and you'll see the directory blocks, followed >by data blocks, scrolling by. I'll give this a try. >Have you tried booting either of the RSTS/E packs? No, but I'll give this a try, too. It seems that the diagnostics pack that I have is unreadable also (that one is not labeled with the required system). Thanks! Rich Cini/WUGNET <nospam_rcini(a)msn.com> (remove nospam_ to use) ClubWin! Charter Member (6) MCP Windows 95/Windows Networking ============================================

26 years, 10 months

Subject: Re: Apple //gs boot problem

by rcini＠email.msn.com

On Tue, 17 Feb 1998 12:53:07 +0100 (BST), Phil Beesley <pb14(a)leicester.ac.uk> wrote: >>You say that the drive came from a Mac SE. Did you low level format >>or re-partition the disk on the IIGS before installing GS/OS? >>I share a drive between a IIGS and a couple of Macs, so the drive >>has a ProDos partition and a couple of HFS ones too. Often the IIGS >>barfs on startup when it comes across the APPLE_DRIVER43 partition >>map; I find that a Command-Control-Reset sorts this out and the IIGS >>boots normally. First, I know that this may sound silly, but where is the RESET key on the GS? My system came with what looks to be a Mac ADB keyboard. Is the RESET key the power key along the top, above the number keys? Back to the drive. I initialized the drive from within the GS/OS Finder (using the Disk | Initialize menu item). I did not specifically partition the disk, though. If you use the Apple Disk utility (that's probably not the exact name) that comes on the GS/OS disks, it shows no partitions, although it identifies the drive as ProDos. How exactly should I take to get this to work properly? I'm obviously missing a step somewhere. Rich Cini/WUGNET <nospam_rcini(a)msn.com> (remove nospam_ to use) ClubWin! Charter Member (6) MCP Windows 95/Windows Networking ============================================

26 years, 10 months

LCD life

by manney＠nwohio.com

Um, I believe so (it's at the shop). I'll check. > Manney, > > Is that Nec a MultiSpeed? I have an older model without the backlight > and no hard drive. > > Joe

26 years, 10 months

System/34, contd.

by maxeskin＠hotmail.com

After some investigation via dejanews, I found that the thing uses 1.7 KW of electrcity. It weighs 1050 pounds. I subscribed to a mailing list that deals with these things and ordered a catalog from system3x.com This was the extent of stuff I found. There was also info on starting and logging into the machine, but I have a while to go until I can do that. I emailed IBM for manuals. ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

26 years, 10 months

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test-drb February 1998