test-drb April 2007

test-drb@ccmp.vtda.org

257 participants
560 discussions

by Watzman＠neo.rr.com

> On Tue, 17 Apr 2007, woodelf wrote: > > On that subject, what operating systems did the H-11 support? I have > one sitting in my collection, complete with paper-tape reader and 8" > disk drives. Never had the space to set it up until recently. > >Steve > The only Heath disk operating system offered by Heath for the H-11 was HT-11, which was a very slightly modified (dumbed down) version of DEC's RT-11. The only disk system offered by Heath was the H-27, dual 8" [Memorex SSSD] drives. Many customers wanted to buy genuine DEC RT-11, which would run on the H-11/H-27, but it was about $2,500 (and the differences from HT-11 to RT-11 were very, very few). HT-11 was "cheap", but it would only run on the H-27, it would not work on a non-Heathkit DEC floppy disk system. The H-27 had two modes, "Heath" and "DEC", to prevent HT-11 from being used on non-Heath H-11's. I don't recall if there was paper tape software for the H-11 or not (I think that there was), but even if there was, no one used it very much. The Heath paper tape reader, the H-10, was a mechanically unreliable nightmare (mostly the punch, the reader worked ok), but they are worth a lot of money today, I've seen them go on E-Bay for over $600. HT-11/RT-11 was no prize; it was a low level contiguous file operating system, less sophisticated even than CP/M, although it may have had some better utilities (and, for those to whom it mattered, it was of course "more DEC-like"). The H-27 was just two standard 8" drives in a case with a Z-80 based intelligent controller (WD1771 disk controller chip) that talked to the H-11 using what we would now call a "host adapter" over a proprietary bi-directional parallel port. The interface and command set wasn't any of the standards for this type of configuration (e.g. it wasn't SASI or SCSI), but it used that type of architecture. For a number of years I used an H-27 on an S-100 system with a Tarbell controller by simply disconnecting the internal intelligent controller and running a 50-pin cable direct to the two Memorex drives. They were Shugart SA-801 compatible, so it was an easy configuration to use, the H-27 then being just two drives, a power supply and a cabinet.

17 years, 2 months

Looking for Northstar Horizon double-density floppy controller

by stekster＠gmail.com

I know I have an extra - finding it is another question. Contact me off list and I will start a search. I can also lend you some boot disks and have extra hard-sectored disks, and can send you pdf docs if you need them. Also check out Dave Dunfield's site http://www.classiccmp.org/dunfield/index.html if you haven't already for N* imagedisks. Bob Stek Saver of Lost Sols

17 years, 2 months

DEC/VMS manuals ("gray wall") available, any interest?

by gunther＠aurora.regenstrief.org

Hi folks, long time no chat with you. Just quickly, we're moving and throwing out stuff you can't think fast enough. Urgently they will toss DEC/VMS manuals from our "gray walls". They may be selective about what to keep. Is there any interest at all in preserving those? Please reply personally to me and cc the address shown below (preserve this subject line) if you are interested. This is going to happen in a matter of days, so time is of the essence. regards, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow at regenstrief.org Associate Professor Indiana University School of Informatics Regenstrief Institute, Inc. Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

17 years, 2 months

Looking for Northstar Horizon double-density floppy controller

by derschjo＠msu.edu

The subject says it all -- acquired a complete Northstar Horizon sans floppy controller a long time ago. I'd love to get this machine running, it's been sitting around dormant for so long, and it's basically useless without a floppy controller. If you have one you're willing to sell/trade for, let me know. Also looking for software if anyone can provide copies -- I have the HD-5 controller/drive so a copy of HDOS would be fun to play around with. CP/M would be nifty as well... As always, thanks in advance... Josh

17 years, 2 months

Heathkit H-19

by Watzman＠neo.rr.com

> RE: Dunno about the H-9, but the H-19 was a nice terminal. I have one > hooked up to an H-11; works great. > > Bob Armstrong > The H-19 was a great terminal. It was a truly great product. Great functionality, solid and reliable, and economical. And Heathkit and Zenith sold a ton of them, tens of thousands (might have even gotten up over 100,000). The H-89 (and all of its' variants) was just an H-19 with a single board Z-80 computer stuffed into the same cabinet. There were actually two major variants of the H-19, the original one and the later one that was re-engineered to meet FCC Class "B" RFI reduction approval. They are functionally the same, and the overall circuitry and firmware are more or less the same, but there are some changes internally (fairly major, actually). You can tell the later one because there is a circuit card on the CRT socket; on the early one, the CRT socket was just a CRT socket with wires running to the deflection board assembly.

17 years, 2 months

Heathkit H8's

by Watzman＠neo.rr.com

In article <002f01c78113$afc16f80$6500a8c0 at barry>, "Barry Watzman" <Watzman at neo.rr.com> writes: > [...] the "CP/M Card" (a > tiny small card, only about 3 inches wide, that allows the computer to > run CP/M ... I think that the original name was "extended > configuration card" or something like that). Do you mean this? Ebay item 200100612888 Yes, I believe that is of those (can't tell with absolute certainty, but I'm pretty sure). It's necessary to run CP/M. Normally the H-8's memory map has ROM in low memory (8K, I think). This card allows switching between this "standard" (for the H-8) configuration and a 64K all-RAM configuration.

17 years, 2 months

Quick survey on equipment

by ajp166＠bellatlantic.net

> >Subject: Re: Quick survey on equipment > From: "Zane H. Healy" <healyzh at aracnet.com> > Date: Tue, 17 Apr 2007 21:18:04 -0800 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >At 11:57 AM +1000 4/18/07, Doug Jackson wrote: >>Some have questioned the number of people on the list who have CP/M systems. I have a few peices mostly cp/m based but others are there. Allison Collection of operational hardware: PDP-8 based machines: ==================== PDP-8f 2 Decmate-IIIs OS/278 Intersil sampler (6100 chipset) 6120 based board, homebrew PDP-11 based machines: ===================== 1 LSI-11/03 rx02 2 PDP11/23 BA11S boxes, various hardware configs 1 pdp11/73 RACK SYSTEM (RX02, RD52, RX33, RL02). BA11va with 11/23 +tu58 PDT11/130 11/03 with tu58 dectapeII Homebrew design using T-11 (the 40pin PDP11) Rt-11, XXDP-11 and unix V6 VAX based machines: =================== Microvax-II (ba23 based) Microvax-II/GPX (Ba123 based, SCSI disks) 3 Microvax2000 all with RD53 or 54 drives, one with ultrix 2 Microvax3100/m76/gpx 3 Microvax3100/server (not M10e) VMSv5.4-4,V5.54, V7.2, Ultrix 4.2 CPM speaking machines: ====================== S100 subgroup ------------- Altair8800(pre-A) Built jan 1975 SN200! Altair 8800B-T complete, factory 1978 2 Northstar horizon, CP/M, NS*dos, hard disk (one I built in '77) CCS-2200 CP/M2.2 Compupro full boat with 8085/8088 card and MPX-1 (CCPM) Netronics 8085 w/VDM1 SBC/bounded systems: -------------------- AmproLB+ CMOS modded and running with 45mb 3.5" SCSI SB180 with SCSI adaptor, adptec scsi bridge and 20mb CPM2.2 3 Visual technolgies 1050, CPM-3 two with outboard 10mb SCSI disk Kaypro 4/84 w/handyman and Advent turborom+personality card Kaypro II complete 1 Vt180 complete 2 Vt180 CP/M board built up as standalone one modded for 6mhz 1 Vt185 Thats a Vt125 + Vt180. Osborne 1 Epson PX-8 with 120k ram wedge and 300bd modem wedge Other buses (not s100): ----------------------- NS* Advantage (hard disk) 2 Hurikon Z80 Multibus system CP/M2.2 MISC Single board computers and systems: ======================================= Motorola 6800D1 SBC with TBX National SC/MP board National Nibble basic [sc/mpII] SBC NEC TK80A 8080a SBC with protocard KIM-1 BCC180 Z180 controller 5 8085 SBC 4krom, 2kram, 3 8251 serial Cosmac ELF orgional (built back in '78) COSMAC ELF (TMSI TM100) expanded elf EELF (Spare Time Gizmos Embedded elf) DEC ADVICE, VAX chipset on an SBC for in circuit emulation. IMSAI IMP48 (8035 based SBC) Homebrew 8039 based SBC (switches and leds pannel!) Prompt-48 804x development tool/system NEC EVAkit-48 8048/9 development system/board 2 TI99A (with disks and SW) Technico superstarter system with assembler roms (TI9900) Tandy M100 portable Commodore 128, I keep forgetting that one.. H19 terminal Vt100/125 terminal Vt1200 Xterminal 3 Vt320 terminal White, amber and green! Vt340 Color Terminal VK170 Vt52 on a dual width card PC stuff of interest, generally I dont bother but these are interesting. Intel Inboard386(upgrades an XT to 386/16 with 1.2mb ram) Trackstar 128 (dual 6502 for ISA PC improvement) AST sixpack pro Tandy 1000hx (V20)

17 years, 2 months

Linux question

by wayne.smith＠charter.net

> Date: Sun, 15 Apr 2007 13:18:17 -0300 > From: M H Stein <dm561 at torfree.net> > Subject: Linux question > To: "'m100 at list.30below.com'" <m100 at list.30below.com> > Cc: "'cctalk at classiccmp.org'" <cctalk at classiccmp.org> > Message-ID: <01C77F60.91DCC0A0 at mse-d03> > Content-Type: text/plain; charset="us-ascii" > > A simple question for the Linux gurus from a WIN/DOS simpleton: > > How do you concatenate two binary files into one? > > m > Ask a question about Linux, everyone falls over themselves to help - and that's certainly nice. But ask a question about a classic system like the Kaypro 10 - like poor Ralph Dodd did on April 12th - and the response is disinterested silence. -W

17 years, 2 months

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test-drb April 2007