test-drb April 2014

test-drb@ccmp.vtda.org

174 participants
170 discussions

by rickb＠bensene.com

Kyle wrote: > I tried another version from here: > >http://www.rickmurphy.net/adventure.htm land it seemed to work just fine, > although for whatever reason, typing DIR results in "No room for output file." > I'm not sure exactly what it means by that; I don't get the same error from > running in simh. > > In any event, I can now run Adventure on my 8/M! I tried the version from the link above on my 8/e. I copied it using the OS8 Disk Server, from the RK05 image to an actual RK05 and ran it from there. My machine has 24K (8K core, 16K MOS), 2 M8650 serial interfaces, RK8E, PT8E, and RX8E. When I run ADVENT, it loads, but then just sits there in an apparent loop. If I type characters, nothing happens, except if I type CONTROL-C, it does exit back to OS/8. I've let it sit a few minutes, thinking that maybe it takes a bit to initialize, but that clearly isn't the case. I also tried the "R FRTS ADVENT.LD"<ESC> but with this, I get a $ prompt which appears to be coming from FRTS, and don't know what to do from there. I did try typing "SYS:ADVENT.LD" at the $ prompt, but it just comes back with another $ prompt. I do note that the INT BUS in is lit. This means that an interrupt is pending, but the ION state indicator is off. I have the serial interfaces set up to use interrupts if they are enabled. To get CHEKMO-II (which uses interrupts for I/O to the console) to run, I had to add some code to the interrupt service routine to ignore any pending interrupt from the second serial interface. Could the interrupt (output ready) from the second serial interface be causing this problem? I'd love to get Adventure running on the system. Thanks, -Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com

10 years

Z8671, INS8073 ROM dumps?

by spacewar＠gmail.com

I could use a dump of the Zilog Z8671 and National Semiconductor INS8073 masked ROMs if anyone has them. Those are the tiny BASIC in ROM versions of their single-chip micros. Thanks! Eric

10 years

Commodores "TED" machines

by terry＠webweavers.co.nz

Scorned, derided and dismissed but are they really that bad? My take on the Commodore 16 and Plus/4. http://youtu.be/TdItsJVLbws Terry (Tez)

10 years

PDP-8a Power distribution box schematics

by anders＠abc80.net

> From: skimsail <skimsail at aol.com> > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>, > cctalk at classiccmp.org > Subject: Re: PDP-8a Power distribution box schematics > Message-ID: <9yw1v6ems88qir3x335bead9.1397869745456 at email.android.com> > Content-Type: text/plain; charset=utf-8 > > Hi there, > I've seen a similar problem and have a schematic that I can send you > in a day or two when I get to it. It may be due to leaky cap on the > back panel because the relay is actuated by 5v that oscillates. > Shaun > As I wrote earlier it was the cap. Here comes pictures after the refurbishment. http://www.abc80.net/docs/pdp8/pdp8a/DSC_2384.JPG http://www.abc80.net/docs/pdp8/pdp8a/DSC_2385.JPG /Anders

10 years

ALTMODE Key on Teleray Terminal

by kylevowen＠gmail.com

I was trying to start ADVENT again on my PDP-8, this time all with my Teleray 3511D terminal for a change (often I use minicom). I found that I could not escape to start the program. Instead, a '[' is printed, which is character code 133 octal. Escape is 033 octal. On minicom, things work just fine hitting the escape key on my keyboard. Is my terminal acting up? Is ALTMODE not defined as 033 on this terminal? Something else? If it's not acting up, any ideas how I can send a 033 from the terminal? Thanks, Kyle

10 years

FS: BN21V-OB DEC SCSI Y Cable & BA350 filler plate

by jtp＠chinalake.com

DEC SCSI Y Cable (HD50 M to two AMP 50 F) BN21V-OB Rev A02 Cable and connectors are undamaged $10 + shipping from 01888 (MetroWest Boston, MA, USA) The cable is about 10 oz, so under a pound with packing. And A standard brown 5 inch filler plate for BA350 for the cost of shipping. -Jim

10 years

Searching for Eurocom II V7

by nigelc＠iinet.net.au

Hello all, I?m desperately searching for an Eltec Eurocom II V7 single board computer. If any of you could pony me in the right direction it would be much appreciated. Best regards, Nigel

10 years

subscription issues with cctech?

by fjkraan＠xs4all.nl

Hi All, Is there an issue with subscribing to cctech? Since I disabled sending mail almost a year ago, the mail server dos not respond at all to my change requests or even subscription using another email address. The only way for me to see this message arrived at the list is looking in the archives... Fred Jan P.S. I tried mailing the administrator, but those messages probably ended up in the same black hole...

10 years, 1 month

My patches for FreeBee to allow Unix to install and boot multi-user

by andreww591＠gmail.com

I have now released my fixes for FreeBee to allow Unix to install and boot to multi-user mode. They are against revision d91346487fe9 of FreeBee (the last to use the original version of the MMU emulation) and can be imported with hg import. The installer complains about the floppies not unmounting properly, but that doesn't seem to affect anything. Also, Unix doesn't reliably boot to the login prompt unless you remove .lpstartsched from /etc/rc (it's easy enough to do this with a hex editor). I'm not quite sure what the problem is. Starting the print server from the command line doesn't cause a hang, and the system never seems to access the parallel port when the print server is started (be it from /etc/rc or the command line). I think the hang might be occurring somewhere after the print server is started. Another issue is that the ROM won't boot the hard disk at the moment (which I think might have something to do with the head select). The only way to boot the hard disk is to boot from a floppy with a filesystem but no kernel. The install root floppy (NOT the boot floppy) works for this. The floppies are available from Bitsavers (IIRC they are in ImageDisk format, meaning need to be converted to raw format to use them with the emulator). As currently configured, the emulator is hardcoded to use a hard disk image that is 67108864 bytes in size. Patches: https://www.dropbox.com/s/iqjm4r7zfr9o7um/3b1emu-patches-new.tar.gz A few more screenshots: Desktop: https://www.dropbox.com/s/0jazyf5z1prz4bu/unix_3.51_desktop.png Desktop with terminal open: https://www.dropbox.com/s/32oevrc5bqvl0td/unix_3.51_terminal.png

10 years, 1 month

Off-topic: Crowd-funding: ISEE-3 (International Sun-Earth Explorer) Reboot Project

by rdbrown＠pacific.net.au

This may interest some list members, http://www.rockethub.com/projects/42228-isee-3-reboot-project-by-space-coll… Our plan is simple: we intend to contact the ISEE-3 (International Sun-Earth Explorer) spacecraft, command it to fire its engine and enter an orbit near Earth, and then resume its original mission - a mission it began in 1978. ISEE-3 was rechristened as the International Comet Explorer (ICE). If we are successful it may also still be able to chase yet another comet. ... The "Hack" xkcd http://xkcd.com/1337/ mentions the ISEE-3 http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1978-079A is the NASA National Space Science Data Center ISEE-3 page They ask *04/18/14*: We REALLY Need this document: GSFC Document ISEE-733-74-001, Revision C, dated 28 June1976/"International Sun-Earth Explorer - A/C, Electrical//Interface Specification"/. Does anyone have a copy?

10 years, 1 month

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test-drb April 2014