test-drb June 2016

test-drb@ccmp.vtda.org

196 participants
290 discussions

by COURYHOUSE＠aol.com

yes there was a vast difference between him and Jobs Ed# In a message dated 6/14/2016 9:32:18 A.M. US Mountain Standard Time, cctalk at snarc.net writes: > Woz sounds like a nice guy. He's incredibly nice. It always impresses me.

8 years, 1 month

VCFed auction updates

by COURYHOUSE＠aol.com

should have kept the good signed stuff and sold the lesser stuff perhaps? unless you had them sign a stack of them. Ed# In a message dated 6/13/2016 12:00:32 P.M. US Mountain Standard Time, cctalk at snarc.net writes: > One thing I did want to ask was, there was some debate about an original > signed Apple. I couldn't make out if there was or was an announcement or if it did or > did not get sold. The auction has four days remaining: http://www.ebay.com/itm/191890608380. We're also auctioning a signed Sol-20: http://www.ebay.com/itm/191890605553 Both machines are super-clean, fully working, and autographed by their respective inventors (Woz/Felsenstein). All proceeds go to VCFed which is a non-profit. > Also what had northern California go to do with it? Nothing. :) Someone asked, in a wishful thinking moment, if the announcement is about a new VCFestival in southern California. I replied it's not and that northern Calif. is a good place to visit for VCF West this summer.

8 years, 1 month

Accessing a TK50 or TK70 from RT

by rodsmallwood52＠btinternet.com

Hi I have had some success in fixing a couple of TK tape drives. They now load and unload every time you press the button. SFSG now to talk to them from RT. Using the diagnostics on the format (RX50) disk the Identify function shows the drive and by inference its controller. However its calls it MUX. I seem to remember under RT you needed to do a SET or ASSIGN to link it to the driver. Anybody know the correct syntax so I can init the tape and start to read and write files to and from it. Rod

8 years, 1 month

DEC Legacy 2016 15/16 Oct 2016 - Registration now open

by mark＠wickensonline.co.uk

Hi folks The website is now back up at http://declegacy.org.uk and will slowly fill with content in the next couple of months about the upcoming event. Registration is now possible. Kind regards, Mark.

8 years, 1 month

DEC Legacy UK show

by mark＠wickensonline.co.uk

The tentative plan is to run the next one in October. The date should be firmed up in the next month or so. Typically I run the event once every 18 months or so. Regards, Mark. On 14 April 2016 at 15:50, Rob Jarratt <robert.jarratt at ntlworld.com> wrote: > It is a very informal event, organised by Mark in his own time. He has > family and work commitments like all of us, so I expect he has not been > able to find the time. > > Regards > > Rob > > Sent from my Windows 10 phone > > From: Rod Smallwood > Sent: 14 April 2016 15:09 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: DEC Legacy UK show > > So why did it say See you in 2016? > > > On 14/04/2016 15:03, Dave Wade wrote: > > I thought Mark was only aiming for every two years. > > > >> -----Original Message----- > >> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Rod > >> Smallwood > >> Sent: 14 April 2016 14:14 > >> To: General Discussion: On-Topic Posts <cctech at classiccmp.org> > >> Subject: DEC Legacy UK show > >> > >> DEC Legacy UK show > >> > >> Where did it go ? > >> 2015 then nothing > >> > >> Rod Smallwood > >> > > > > >

8 years, 1 month

VCFed auction updates

by cctalk＠snarc.net

>> should have kept the good signed stuff >> and sold the lesser stuff perhaps? >> unless you had them sign a stack of them. > > I think that VCFed (was MARCH) had that one > signed at the same workshop that mine was > signed at. No. These are different ones. These were donated to us very recently specifically for auctioning as a fundraiser.

8 years, 1 month

VCF - can't get in again.

by rodsmallwood52＠btinternet.com

Would you believe it. VCF forum is up to its old tricks again. Same old thing. Can't log in Last time I got told I had registered when I had not. Just like the banks your PIN number was used so it must have been you. Our software can never be at fault. The user is always wrong. Rod

8 years, 1 month

WTB: Data General 6030 floppy drive

by nf6x＠nf6x.net

What are the chances? Slim, but I'll ask anyway. Now that I'm giving my Nova 3/12 some more attention and beginning to debug its 6045 hard drive, I'm interested in dolling up the system some more, and replacing filler panels with things that emit noise and heat. My manuals say that I can mix 6030 floppy drives on the same bus with the 6045 hard drives, so I'd like to add one to my rack. So, does anybody have a 6030 floppy drive for swap or sale? I'm in southern California, which can be a relevant detail when talking about transporting vintage gear. While I'm at it, additional removable packs for my 6045 drive would be helpful, too. Especially if there's anything interesting on them. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

8 years, 1 month

Data General Nova object formats

by nf6x＠nf6x.net

I have been able to use my Data General Nova 3's Program Load function to load in the 091-000036-01 self-loading bootstrap program, and then use that bootstrap to load in absolute binary tape images from *.ab files, all over the TTI channel from a terminal emulator. Now, I'm trying to hack Toby Thain's Nova assembler to emit auto-loading images by prepending the self-loading bootstrap to the assembled program, with a binary patch to make the bootstrap jump straight into the absolute binary loader rather than halting at address 000121. It seems to me that I should be able to use this scheme to assemble programs which I can then Program Load through the TTI channel, and simply send the image over the serial port from a terminal emulator. I have the assembler hacked up to prepend the patched loader, and the patch I made seems to cause the bootstrap to jump right into the absolute binary loader; I simply replaced the HALT that ended up in 000120 with a JMP 000121. However, the binary loader continues running after presumably digesting the data that followed the bootstrap. Toby's assembler outputs "relocatable binary" code in .rb files, and I don't understand if/how that differs from the "absolute binary" format in the .ab tape images that I can successfully load. I'll continue researching, but I'd appreciate it if anybody might be able to provide any clues to dispel my confusion. Regarding my hacked up assembler, I don't know whether it's advisable to post it publicly after getting it working, since it'll have original DGC binary code embedded in it. Opinions? -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

8 years, 1 month

Data General Nova 3 and 6045 Drive Questions

by nf6x＠nf6x.net

My Nova 3/12 system has a 6045 cartridge hard drive, with one fixed platter, one removable platter, and a capacity of 10M. I haven't managed to boot my computer from it yet, and after a long pause, my Nova 3 is requesting another time slice of my attention. I can see in the drive's technical manual where I can specify surface 0-3 in the commands. I assume that the built-in bootstrap loader in the Nova 3 reads drive 0, cylinder 0, surface 0, sector 0, and places it at memory location 0, simply by virtue of all of the registers having been reset after an initial power-up and spin-up. The bootstrap loader code I've seen looks like it just issues a read command without initializing the memory address register and disc address/sector count register. I don't fully grok that code yet, so maybe I'm mistaken. I have not found mention yet of which surface numbers correspond to the fixed platter and which correspond to the removable one. Is the removable platter selected as surfaces 0 and 1, such that the system would normally boot from the removable platter? Or would it normally boot from the fixed platter, with the removable platter being used to get data on and off the system? Incidentally, I wonder if anybody has any original printed technical documentation relevant to my Nova 3 system which they might like to sell. I'm working off PDFs right now, and I'd like clean original paper copies for easier perusal and reference. I'm also interested in replacing the filler panels in my Nova's rack with other interesting peripherals. Maybe a floppy drive? My 6045 is supposed to be able to be mixable with 6030 drives on the same bus, according to the 6045 manual. If anybody has some excess Nova hardware that might fit into my system, please let me know. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

8 years, 1 month

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test-drb June 2016