test-drb May 2001

test-drb@ccmp.vtda.org

273 participants
642 discussions

by Lee.Davison＠merlincommunications.com

Its rather new High speed low noise logic. Sincerely Larry Truthan truthanl(a)oclc.org classiccmp-digest subscriber faster to respond directly to email. ECL isn't, I have some data books from 1974. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp

23 years, 2 months

SoCal auction madness, free stuff, more

by mikeford＠socal.rr.com

Very little is left, and the rolloff dumpster is 3/4 full. Surprizingly digging in the last couple of pallets this morning turned out, well. We found a cache of brand new in the box Grid stuff, looks like maybe 6 brand new tablets and some misc. Unfortunately this was also mostly a day of dumping stuff. I tried to keep ahead of the dumping crew, but lots of stuff like new old stock HP keyboards (like the workstations used) were tossed and buried. Around this weekend I will post a wrap up, with details on the Grid's, and kind of a what it was like post. FWIW I will be at the site again for a bit on Thursday morning, but no later than lunch time (thinking 10-12), and if someone really really wants to call me my cell is 714-292-7852.

23 years, 2 months

Converting TTL monitor to Analog

by Lee.Davison＠merlincommunications.com

> How do you define resolution at the monitor level? I've always been able to > get entirely different resolutions out of monitors, and why would they > disagree? If it's an analogue signal, wouldn't the monitor just sweep along > and project whatever is input? It's defined in lines, i.e. the number of black to white transitions you can draw on a horizontal line before it all becomes a grey blur. If you know the dot pitch for your monitor then it will be about 1/2 that for delta dots or 1/3 that for stripes Multiplied by the tube width. Domestic receivers are rarely better than 450 lines which is why NetTV is so warm and fuzzy. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp

23 years, 2 months

Converting TTL monitor to Analog

by jeff.kaneko＠juno.com

On 9 May 2001 15:24:8 +0100 "Iggy Drougge" <optimus(a)canit.se> writes: > OTOH, the Master System had RGB output as well on the DIN-8 "AV > OUT". Or at least it did in Europe. I never knew that. I always assumed the thing could only do composite. Even that though, looked *teriffic* on a Diamond Scan! Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

23 years, 2 months

FW: Rolm Rugged Novas

by acorda＠1bigred.com

It might very well be possible, considering the location of the hamfest, and the fact that I've heard that NASA/Goddard has periodic auctions (although I've yet to find out when and where they are). The unit seems to have been mounted in a 19" rack, since it has a rack faceplate attached with some angle iron... the faceplate has a hole cut in it to fit the front panel of the 1602...definitely not a military configuration. -al- acorda(a)1bigred.com > > > -----Original Message----- > From: Eric Chomko [mailto:chomko@greenbelt.com] > Sent: Wednesday, May 09, 2001 3:09 PM > To: classiccmp(a)classiccmp.org > Subject: Re: FW: Rolm Rugged Novas > > > acorda(a)1bigred.com wrote: > > > Does anyone else on the list have a Rolm besides me? I wonder > > how many are actually in private hands. I have a 1602 that I > > picked up at the Manassas Va. hamfest a couple of years ago. > > The fellow that sold it to me claimed that he bought 2 of 'em > > at a NASA auction, which is believable because it has a couple > > of tags that proclaim it to be part of a "Spacecraft Simulator". > > > > Do you know if it came from the Goddard Spacefilght Center? > I know of a spacecraft simulator (SOCC) that was flown around > on board a modified Boeing jet. I know some folks that worked > on THAT system. Perhaps your box is one of those? > > Eric > <...Text deleted for brevity...>

23 years, 2 months

Fw: percom board

by r_beaudry＠hotmail.com

Hello all, I was bidding on a Percom S-100 cassette interface on a nameless auction site :-), and I was contacted by someone who wanted to know what my interest in the board was. I replied, and as it turns out, the "someone" was the daughter of Percom's founder! She sent me the message below, detailing some of the history of Percom. Sadly, she has nothing left from the Percom line, and has made a request at the bottom of her message. I have used her name and email with permission. Please contact her directly if you can be of assistance... Rich B. ----- Original Message ----- From: "Margo " <robolady(a)hotmail.com> To: <r_beaudry(a)hotmail.com> Sent: Tuesday, May 08, 2001 04:15 PM Subject: Re: percom board > > Percom was an upstart computer peripherals company, with a brilliant mind behind it. In the right place at the right time. On the cutting edge of the computer hobbiest market of the 1970's. Before the internet, before there was a computer in almost every home and every classroom in America, there were the hobbiest. Garage engineers > Making computer systems from components gathered from here and there. My Dad was one of those engineers, > His name was Harold Mauch and he founded a company known as Percom Data Corporation. > > Percom started in the backroom of our 3 bedroom house in Texas. Dad got tired of working for others and the partnership he had started with 3 buddies wasn't working out. So one day, literally, he decided to break free and market his own ideas himself. His idea was a cassette interface for the hobbiest computer. This was in about 1976. He took out a small ad in Byte magazine and went to work. I remember helping him build PC boards for 50 cents each when I was 12 years old. After awhile the third bedroom wasn't enough space for him so he got a semi large portable building and put it in our backyard. It wasn't long before he had to hire someone to help him and things were going well. In the summer of 1977 My Mother quit her job with Xerox and went to work with my Dad. They were the ideal partnership. He was the brains behind the products, and she was an organizational genius. It wasn't long before they had 3 employees and then a few more. They were growing out of the first building they had rented and needed a new place. They found the perfect shop/office just down the street and moved in. Soon they had 50 employees, engineers, assemblers, office workers etc. Everything a real company has. I remember him telling a story once about how he had walked into the production area one day and it was just humming with activity, this was his dream and he had succeeded. > > The people who worked for Percom in the 1970's were special. They were a family and parties and picnic's were the norm. When I turned 13 they all through me a surprise party. I would hang around in the summers, do some work but mostly bother the employees. Sometimes I would stuff PC boards and clip wires, whatever there was for a 13 year old to do. I really enjoyed the people and the atmosphere. I think everyone who worked there at the time really enjoyed their jobs. > > Soon there were 100 or more people there and they were quickly busting out at the seems. As with any company as it gets larger, there was dissention among the ranks. Engineers were unhappy because they didn't get all the credit for new products, Some took ideas and started their own companies. Some just wanted to break out on their own and do what Dad had done, and be their own boss. But things were changing. New products were being developed and sales were going up. The double density adapter for floppy drives were booming, we no longer sold the old cassette interface product and we were onto bigger and better things- Floppy disk drives. > > I can't tell you the ins and outs of the technical side of the business, for I was just an observer throughout this whole process, but I can tell you business was good. It was at about this time that they made the decision to get a much larger office space. This was the beginning of the end for Percom. They got a huge space and moved in 1981. Because of the new space Percom needed sales desperately. Now the sales were pretty much eaten up by the lease on the building and the salaries of the employees. > Dad needed to do something, so he and mom decided to bring in some investors. The investors came in with their money and their entourage. We began hiring big money executives, sales execs, marketing execs, engineers etc. all making huge salaries. Some even getting hiring bonuses just for coming to work for us. But all of that was okay because we had the investors money to pay them with, and they were going to bring in much more money than they would consume, in theory. > > Work began on a new product, the Hard Drive. This was something new but necessary for Percom to stay competitive. The only problem, no one could get it to work right. So we kept selling Peripherals, Disk drives, Doublers, etc. The new guys knew nothing about the industry, all they knew was how to make money. They had all been pretty successful up until that point, so they must know what they are doing, right? Everyone was working hard to make Percom Bigger and better. All the employees and management were working hard to make this thing work. But something was about to happen > No one could have predicted. > > In August of 1982 Dad found out he had Leukemia, by the end of the month he was dead. As time progressed it became clear that with my Dad's loss Percom had lost it's heart and soul. New products would continue but nothing could keep up with the fat salaries and high rent that Percom had committed itself to. > > Mom quit within a year after Dad's death and so did I. By that time I had graduated High school and had gone to work for Percom full-time in the accounting department. By the mid 80's Percom was gone, but not it's products. I've recently become aware of old Percom products (some in like-new condition) being sold at auction on E-bay. It's always nice to see those products still being used, and I usually try and contact some of the people buying them. > >I Would love to find an OLD CIS30 board or old Byte magazines from 76 or 77. Specifically one issue with a purple(or other pastel, maybe blue) cover, with a large cassette on the cover. This was the first magazine percom ran an ad in. > Well for those of you using this old stuff, Good luck on your projects, You are all made of the same stuff my Dad was made of with those Fertile minds and love of gadgets. > > Margo

23 years, 2 months

9-track questions

by hans＠Huebner.ORG

Hello again, I have two questions regarding 9-track drives: Is the position and type of the BOT mark standardized? I have a few tapes without BOT marker which are refused by my CDC transport, so I guess I'll have to add my own BOT marker. Can one Pertec controller handle multiple tape transports? How are the transports supposed to be connected? Or do I need multiple Pertec controllers if I want to have more than one transport on one machine. Thanks in advance, Hans -- finger hans(a)huebner.org for details

23 years, 2 months

Here is my intiat program for 82C51 (UART) but it is not working. So need help

by M.Tekeste＠Bradford.ac.uk

#include <conio.h> #include <stdio.h> #include <dos.h> /* Type Definitions */ typedef unsigned char UBYTE; /* Old habbit... */ /* Serial Port Definitions */ #define STATUS 0x308 /* Status Base Address */ #define CONTROL 0x300 /* Control Base Address */ #define TXREG 0x30C /* Transmit Base Address */ #define RXREG 0x304 /* Receive Base Address */ #define TRUE 1 /* Function Prototypes */ void InitUSART(void); /* Initialize USART */ void TxData(UBYTE); /* Transmit Data */ UBYTE RxData(void); /* Receive Data */ /* InitUSART() - Initialize USART to 153600, 8 Data Bits, No Parity, 1 Stop Bit */ void InitUSART(void) { outp(CONTROL, 0x00); outp(CONTROL, 0x00); outp(CONTROL, 0x00); outp(CONTROL, 0x40); // Reset UART outp(CONTROL, 0x4E); // Stop, no parity, 8-bit, %16 baud outp(CONTROL, 0x05); // UART now ready } /* TxData() - Send Data to Serial Port Entry: data = Data to transmit */ void TxData(UBYTE data) { UBYTE x; /* Check for Tx Buffer Empty */ do { x = inp(STATUS); x &= 0x01; } while(x == 0); outp(TXREG, data); /* Send Data */ } /* RxData() - Receive Data from the Serial Port Exit: data = Rx Data byte */ UBYTE RxData(void) { UBYTE x; UBYTE data = 0; while(TRUE) /* Check for Rx Data */ { x = inp(STATUS); x &= 0x02; if(x == 0x02) { data = inp(RXREG); /* Get Data */ break; } /* Optional. Aborts if keypress */ if(kbhit()) /* Abort if Keypress */ { getch(); printf("\n"); break; } } return(data); } void main(void) { UBYTE DSR; InitUSART(); while(TRUE) putch(RxData()); }

23 years, 2 months

FW: Rolm Rugged Novas

by acorda＠1bigred.com

Does anyone else on the list have a Rolm besides me? I wonder how many are actually in private hands. I have a 1602 that I picked up at the Manassas Va. hamfest a couple of years ago. The fellow that sold it to me claimed that he bought 2 of 'em at a NASA auction, which is believable because it has a couple of tags that proclaim it to be part of a "Spacecraft Simulator". I haven't yet had time to play with it, but I hope to do so sometime this summer. Attaching anything to the mil-spec connectors is going to require a lot of creativity :) -al- acorda(a)1bigred.com > -----Original Message----- > From: Bill Pechter [mailto:pechter@bg-tc-ppp1375.monmouth.com] > Sent: Monday, May 07, 2001 5:30 PM > To: classiccmp(a)classiccmp.org > Subject: Re: Rolm Rugged Novas > > > > G'day DCC/DG lovers - > > > > I have updated the SimuLogics site with some DCC, Rolm and DG/One info. > > (Its a start, anyway.) > > > > www.SimuLogics.com/nostalgia/rolm/rolm.htm > > I know there's lots of those Rolms still in use by the military. > At least they were everywhere when I field serviced Vax systems at Fort > Monmouth (a hotbed of Army software development) in the mid '80's. > > Bill

23 years, 2 months

modern? DEC 8" at TCF

by jeff.kaneko＠juno.com

Sources on the net say this is (part of) an RA-92. On Sat, 5 May 2001 16:38:15 -0400 "John Allain" <allain(a)panix.com> writes: > Anybody want to help me ID this drive? > It appeared to be 8" platter, but new, approx > 9"x7"x18" 20lb? or so, power-ish connector >6 pins > on one end, SCSI-ish on the other, > > with the following >>> DEC <<< #'s: > P/N 70-26850-02 S/N KP04834329 Bearing > P/N 70-27265-01 S/N CX10325134 RevE09 > P/N 70-27492-01 S/N CX10325134 > > It was very light for its size. > > I'm probably going to go back and but 1 tomorrow ($10) > but will get more if people here want. > > I was surprised to see such a large drive since the seller > said he got them new and most nonremoveable drives > made in the last 10 years have been 5.25~3.5 form factor. > > Anyhoo, lemme know if'n you know/want. > > John A. > ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

23 years, 2 months

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test-drb May 2001