test-drb July 2012

test-drb@ccmp.vtda.org

196 participants
250 discussions

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RL01/RL02 simulator

by aek＠bitsavers.org

FYI http://www.pdp11gy.com/indexE.html#file:///E:/homepage/indexE.html

12 years, 5 months

Unknown card..

by wrm＠retro.co.za

>On second thought, I concur. The fingers seem to match the Apple II >slot (power and data lines in the correct positions), so it is very >likely an Apple II card. Naaah, I disagree. Sure, it yelled "Apple" at me immediately. But it looks like the power is in the middle, by C1... and Apple II power is at the (what would be in this pic) right hand side, and those look like signals going to the 244. On an Apple the pins 45 and 47 (the way this card is numbered) would be daisy chained to the other side. Not Apple IMO. W

12 years, 5 months

TECO ^B on OS/8 and RT-11

by legalize＠xmission.com

According to the documentation for TECO v40: ^B <CTRL/B> (caret/B) is equivalent to the current date via the following equations: OS/8: ^B = (((month*32)+day)*8)+((year-1970)&7)+k where k = 4096 if year>1977 and k=0 otherwise RT-11: ^B = (((month*32)+day)*32)+year-1972 RSTS/E: ^B = ((year-1970)*1000)+day within year RSX-11: ^B = ((year-1900)*16+month)*32+day VAX/VMS: ^B = ((year-1900)*16+month)*32+day TOPS-10: ^B = (((year-1964)*12+month-1)*31+day-1) Notice how the year is added as the least significant bits for OS/8 and RT-11. For OS/8, you only get *3* bits for the year plus a high 4K bit set if the year is out of range? Does this mean years higher than 1977 are encoded as 4096+(year-1977)? For RT-11, notice how year-1972 is packed into *5* bits (0..31), so years after 1972+31=2003 start carrying over into the bits for the month and day. Can anyone with RT-11 or OS/8 and TECO v40 verify what is described above? -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

12 years, 5 months

ST-506/412 to IDE/ATA/SCSI/? adaptor

by abs＠absd.org

Does anyone know of any adaptors to fit a "modern" drive (be it IDE, SCSI, ATA, CompactFlash etc) into a machine with an ST-506/412 interface? Or more reasonably knowing this list, does anyone know of schematics and board kits? :)

12 years, 5 months

Unknown card..

by robert＠irrelevant.com

My dad turned this up the other day. He'd been tidying his desk and come across it! He's no idea where it came from, or what it's out of... Anybody got any ideas? Picture at http://www.irrelevant.com/rob/IMG_3002.JPG (708KB) It look a bit like an ISA card missing it's bracket but I've not got one to hand to compare it too. Label shows a horse, CP Computer Products, Power Products Division and a matrix printed "PM671R". Underside has "Artwork PC19640, REV.B. Detail PC19641. Assembly PC19642. G T P 244" in copper. Main chip is an AMD Z8530PC. There's a PAL and a MC1488 & 9, otherwise the rest is 74LS TTL. All socketed. 26 pin internal header. No external sockets. Date codes are mostly 1987. It certainly feels like some sort of RS232 serial card, based on the chips, but I've not seen one without an D-type socket on before. Any ideas? Anybody have a use for it? FTGH just pay postage. Rob

12 years, 5 months

Unknown card..

by wrm＠retro.co.za

> >Wasn't there a short-lived "S-50" bus once upon a time? There was an SS-50 bus which was a 680x bus by as far as I remember mostly SWTPC and Gimix, and that was based on 0.1" headers with the sockets on the motherboards. There was also an SS-30 bus for I/O -- similar to the Apple II in that each slot had a decoded select signal. Dave Dunfield knows more than most of us about this :-) W

12 years, 5 months

lot of DEC equipment for sale

by saipan59＠q.com

We're moving, and I need to down-size considerably. I want to sell the following DEC gear as a lot for $2000. You must be able to pick it up in Colorado Springs. Everything goes together, please - no cherry-picking. You take it all, and you can dispose of the stuff you don't want. Here's the highlights: PDP-8E. Years ago, I was able to key in stuff from the front panel, but it didn't seem to execute. But I think it's not too far from working. PDP-11/05. The 5V power rail doesn't work, and the core memory is flakey, but years ago I hooked up an external 5V supply, cabled the Unibus to an external DD11 with MOS memory, and booted and ran RT-11 using my RX01 emulator board. The front panel is ugly, but all the switches and lights work. Includes spare CPU and memory-controller cards, but at least some of them don't work. VT05 terminal. DEC's first general-purpose video terminal. Quite rare, I think. It works, last time I tried. VT100 terminal. Works. PDP-11/03-L system box. It's a rack-mountable BA11 chassis with CPU, memory, BDV11, and serial card. PDT-150. Works. Have a spare CPU board also. VAXstation 3100-M38. AlphaStation 200 -4/166. "Pizza box" storage box. Accepts 3 SCSI SBB disk drives. About 2 linear feet of microfiche, tech and maint. info. These alone are worths 100's of $$ on eBay. This is mostly "good stuff". Option Module List books, 4 volumes. VMS CDs. Digital Technical Journals - I think it's a complete set. DEC handbooks - about 4-5 linear feet. A variety of modules, including Unibus, Q-bus, u-VAX, and some straight-8 flip-chip cards. Also available, but for an additional cost: Original Commodore PET, 8K RAM, chiclet keyboard. It was my very first computer in 1979. Atari 800 system. HP-85. A home-brew S-100 system that I built, based on a PDP-8i switch panel and vintage LEDs. Pete Contact me at: saipan59 at Q dot com. Or call: 719 282 1033 (weekends, or evenings before 10PM Mountain)

12 years, 5 months

TSX-Plus docs

by wdonzelli＠gmail.com

I have quite a pile of TSX-plus docs that need to find a good home - so far three or four binders. TSX is an extension of RT-11. Please contact me off list. Bitsavers has dibs. Free for postage (media rate should not be too bad). -- Will

12 years, 5 months

Latest find 11/03 from a VAX 785

by quapla＠xs4all.nl

Well, I found an 11/03 at a customer and he said 'take it if you want...' which, of course I did. He said it was a spare bootsystem for their (long gone) VAX 785. It has a bit of an odd card in it, almost empty with 50 pin connectors on it and just a few chips on it. I guess this went into the VAX to boot/load the microcode? Ed -- Dit is een HTML vrije email / This is an HTML free email. Zeg NEE tegen de 'slimme' meter.

12 years, 5 months

can anyone verify if the HP 1651a analyzer has a b & w or color crt?

by rampaginggreenhulk＠yahoo.com

please. Wif sugar

12 years, 5 months

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test-drb July 2012