My first PC. - Page 2 - diyAudio
Go Back   Home > Forums > Source & Line > PC Based

PC Based Computer music servers, crossovers, and equalization

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th August 2010, 07:35 AM   #11
diyAudio Member
 
Join Date: Nov 2009
Location: Los Angeles
Quote:
Originally Posted by panomaniac View Post
You guys are young.

My first PC was the Commodore "PET". The daddy of the 64. Only cassette drive, no floppy or HDD. 14K ROM, 1Mhz speed. Circa 1979. Others in the computer club at the time had the Apple-II or the "Trash-80".
Mine did not have the built in cassette.
Oh, my first _computer_. That was an Apple ][ Plus. By the time I abandoned it, it consumed around $6000 in 1980 dollars. Graphics printer card $300. 80 column card $300. NEC dot matrix printer $750. RAM disc cards $400. Green screen monitor $250. Dual floppies $1000. Clock, sweet talker, programmable keyboard interface, RS-232 interface, Apple Pascal, language card. Blank Maxell floppies - 143K Bytes - $57.50 / 10. You had to be dedicated and a little crazy. BTW before I got the floppy drives it worked very well with the Nakamichi 580M cassette machine. Still have the Nak.

Current PC - 4GB RAM, 1.5 T drive, SPDIF, FireWire, Esata, 7.1 audio, DVI-D / HDMI blah blah blah - like many others. <$500 in 2009. Aren't computers grand?

G
  Reply With Quote
Old 20th August 2010, 07:41 AM   #12
dewets is offline dewets  South Africa
diyAudio Member
 
Join Date: Jun 2004
Location: Somerset West, South Africa
OOO! That brought back SOME memories of my days a computer operator:

The insurance company I worked for had a ICT Orion computer that still had transistors. ( A relic from the mid 60's still running strong up untill some time 1976) Input was with punched cards or paper tape. No comms to anywhere... 16 tape decks using 1 inch wide mag tapes. 32K memory, and drum memory/space. Drum was the precursor to disk... 2 x 2500 lpm (lines per minute) barrel printers sang to us once they started printing to I-line...

The console also looked like a cross between the control room of nuclear power station and a telephone exchange.

Control to the "beast" was thru a Flexowriter console, and the console log was output to punched paper tape...

Yea, those were the days of long hair and weird habits. Now we don't have the hair, and the domesticated husbands' habits align with that of their wives...
  Reply With Quote
Old 20th August 2010, 08:17 AM   #13
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
My first one:

Click the image to open in full size.

Motorola Evaluation Kit 6800D2 bought in 1977 consisting of:


- CPU Motorola 6800 running at 1 MHz
- 2128 Byte 6810
- 1 KByte ROM 6830 holding the operating system
- 6 * 7-Segment-Display
- Hexadezimal keyboard 0-9 and A-F
- External cassette using Kansas City Standard interface

My first step into the digital world.

Best regards - Rudi_Ratlos
  Reply With Quote
Old 20th August 2010, 08:39 AM   #14
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Blog Entries: 22
I guess a commodore 64 with dataset (cassette) although it was the family pc was my first PC. An Amiga 1000 with 512K Memory was the first I bought myself, and I even did the DIY 512MB ram upgrade which entailed soldering ram chips on top of the ones on the motherboard, cutting pins and running wires to other places

Fujitsu M180 II AD was the first commercial (mainframe) computer I used, when I was a computer operator

Tony.
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos
  Reply With Quote
Old 20th August 2010, 09:42 AM   #15
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Blog Entries: 22
Here are some pics of the above mentioned ram upgrade

and the link has three photos of a fujitsu M380A Mainframe CPU board (one of 16 that made up the central processor) I grabbed one when they decommisioned it for scrap. These boards cost $28K AU in 1992 if you needed to buy a spare.... Flickr: Search _wintermute's photostream

My Boss at the time had one from the M180 II AD that I first worked on, which was much smaller, but had supposedly had solid gold heatsinks!

Tony.
Attached Images
File Type: jpg DSC_5928.jpg (198.7 KB, 158 views)
File Type: jpg DSC_5929.jpg (181.8 KB, 154 views)
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos
  Reply With Quote
Old 5th September 2010, 06:30 PM   #16
1audio is online now 1audio  United States
diyAudio Member
 
Join Date: Mar 2004
Location: SF Bay Area
Blog Entries: 3
The first computer I used was one of these: Bendix-G15-1950s. Needless to say, personal computer was an Oxymoron at the time, especially for high School students.

Then I spent some time with these: The CDC 6000 Series Computer

Then, after collage, I worked with these: http://mit-a.com/Images/big/IV-90%20chassis%202.JPG.
Actually I was in the small group that designed the machines. I built several of the prototype cards for these using wirewrap and lots of sockets.

I then got a small PC based on the s100 bus called a GNAT. I still have an s100 based system I use regularly. This impedance analyzer ESI 2160 Video Bridge (Auto LCR Meter) is based on a Z80 and the S100 backplane.

Computers were really boring at the time. I ditched a paying job and started building audio stuff to regain some sanity. Computers have come a very long way since. However the construction quality has deteriorated. But in fairness the cost of one of the Bendix tube modules would be more than a modern decent PC in inflation adjusted dollars.
__________________
Demian Martin
Product Design Services
  Reply With Quote
Old 20th September 2010, 10:51 AM   #17
diyAudio Member
 
Join Date: Sep 2010
Atari 1040 stfm
then Amiga 500




------------------------------
usb rubber cover
usb rubber covers
  Reply With Quote
Old 30th September 2010, 06:07 AM   #18
diyAudio Member
 
Join Date: Mar 2004
Location: Medford, MA
Intel SDK-85. My dad brought one home from work for me I think in 1982 because, in the 6th grade, there was this book in our middle school library called "Build You Own Robot" that was based on the 8085 CPU. So, that's how I learned to program - assembling 8085 opcodes by hand using the manual. Soon thereafter, I got to use a PDP-11/70 running Unix V7 (AT&T real stuff) on a timeshare host after school. In the late 80's, I got a courtesy dialup account to a VAX 11/750 using my ultra-hip 2400 baud modem.

In college, I had PC/XT clone running Wordstar and used to dial into the Universities' VAXCluster. I learned about USENET News in 1991 by using the 'field'/'service' username-password pair that shipped out of the box on Ultrix-32. I used to login (without authorization!) to the sparse few VAXen running Ultrix on campus - at night, when the grad students had gone home, and used the 'rn' program to read the usenet groups.

Around 1993, I was gifted a Sun 3/80 with a nice monitor which I used for many years, until 1998 or so at home. In 1999, I spent money and built a dual Pentium II box running some flavour of Linux at the time (probably not Redhat).

At work, I used all SGI boxes up until 1995. Then DECStations for a few years. Around 1998 till 2008 - I used SPARC boxes at work. I hated SPARC boxes, they were always much slower than the other vendor's alternatives (especially the DEC Alpha's, which my colleagues had and were significantly faster.)

-- Jim
Attached Images
File Type: jpg sdk85.jpg (279.2 KB, 88 views)
  Reply With Quote
Old 3rd October 2010, 12:20 AM   #19
dangus is online now dangus  Canada
diyAudio Member
 
Join Date: May 2004
Location: Vancouver Island
I tried to build some sort of analog computer that used potentiometers. Then a sort of digital one that used DPDT switches made from paper clips and thumbtacks. Then, a keypunch to write programs on punch cards which the teacher took to the university once a week to run. It took a while to debug programs.

Then a MicroProfessor Z80 trainer, and finally a real personal computer: a "Unitron" Apple II+ clone. At least that was the main board; the case I made from 3/4" plywood, the power supply (initially) used a Radio Shack transformer and a 78H05 regulator. Keyboard was surplus, but had a compatible encoder chip, although it didn't do the arrow keys or even backspace. Storage was to a portable cassette player. Helpfully, I bought an official Apple II technical manual which had schematics and even assembly language for the EPROMs. Later, I bought a surplus Shugart SA400 and made an adapter board. The floppy controller card, 80 column, Z80, EPROM burner, and other cards were bought as bare boards. Obtaining PROMs for an RGB card was a problem: I reverse engineered it to get a schematic, then figured out how to program a portion of the PROM (enough to get text working). To burn the bipolar PROM, I added some driver chips to the Microprofessor and wrote a little program to do the burning.

My first PC (4.77MHz 8088), I bought a bare motherboard and bags of parts. It never worked that well, possibly since it wasn't a multilayer board. Irritatingly, my friend built the exact same board and had no problems. I partly tamed the parity errors by adding a ground plane under the board using a sheet of plastic and aluminum foil. Horrible Remex 2/3 height floppy drives were another brilliant purchase. Video and other I/O cards were built up from bare (unstuffed, not prototype) boards. Around 1986, I scored a used Turbo XT (8 MHz!) for about $125. Two surplus full-height 10MB MFM CMI harddrives for $125 each. WD MFM controller was around $175. (At the time, a no-name turbo XT with 20M Seagate ST225 and a CGA monitor cost $2000.)Then a 6 MHz AT clone which had been temporarily killed by a failed 80287 (but recovered). Then an overclocked no-name 20 MHz 286 board for about $400. Then for the first time, a near SOTA CPU: 33MHz 486 Gigabyte motherboard (thanks to a friend unexpectedly repaying a loan) (at the time, that was worth $1500 or so). It initially seemed like an unimaginably powerful machine, with a staggering 8 megabytes of RAM.

I'm going to reassemble that 486 eventually. It'll be pimped out with a Gravis Ultrasound, and a Copy II PC Option board. Probably a 120M Seagate hard drive (my first IDE drive), but hopefully also a CF drive to facilitate moving data on and off. If not, a SCSI card and CD writer. The Option Board enables reading Apple II discs, so in theory I can make backups and run them in an emulator.

As far as sound goes... Wolfenstein on the Apple II managed to play voices and sound effects over the stock 1-bit output. My DIY case did have a larger than normal 4" speaker, which was a vast improvement on the speakers in normal computer cases (and even had a volume control - a series resistor and a switch to short it). I built a sound card for the Apple II that used an 8 bit DAC; not much software supported it, but there were apps for a speech synthesizer which was fun. The first real sound card was an 8 bit (mono) Soundblaster. It cost about $175 in the early '90s.

Last edited by dangus; 3rd October 2010 at 12:26 AM.
  Reply With Quote
Old 3rd October 2010, 12:29 AM   #20
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
My first venture into microprocessors was a Microprofessor.
Looking back it was incredibly basic having to type in hex codes for the instructions. However, I did manage to write a simple game for it using the push buttons and LED displays.

What a step up it was later on to get a Sinclair Spectrum and a Z80 editor/assembler.

The next system we got was a multi board computer system.
I wrote an editor and Z80 assembler for it on teh Spectrum and used that for development for a few years before my first pc landed on the desk.

The first pc was a 10MHz beast with no hard disc but two floppies and an amber monitor. It still boots up faster than my current PC !
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Best PC Laptops for running test tools -Clio , PC Scopes etc. ? Hearinspace Multi-Way 12 12th August 2008 11:54 AM
PC-Soundcard without PC ? artquake Digital Source 2 11th January 2008 07:39 PM
WTB- PAS-3 Upgraded or Mod PC-5 and PC-6 Pyre Swap Meet 0 6th July 2006 05:20 PM


New To Site? Need Help?

All times are GMT. The time now is 05:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2