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Big Iron Dominates VCF East 8.0by billdeg Total messages in this thread: 2 Updated: [ Videos from VCF East 8 ] 05/15/2012  The highlight of the 2012 Vintage Computer Festival East 8.0 was this beautifully restored original PDP 8 computer. David Geeswein is the exhibitor and he demonstrated to onlookers how to load programs from papertape and interface the PDP 8 with an oscilloscope. Click image for larger view.
 Dan Kottke and other event attendees chat about the early days of Apple Computer. Dan gave a captivating keynote talk on Sunday about the events that lead up to the founding of Apple Computer, his relationship with friend Steve Jobs, and his contributions to the Apple I, II, and /// systems. Click imag">... [ read more ]
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Building a CP/M for Lobo MAX 80by billdeg Total messages in this thread: 2 Updated: [ lobo cp/m disk images on the 'Net ] 05/06/2012 I wanted to see if I could do more than boot my MAX 80 using LDOS 5.1.3.  A Lobo Max 80 with a Lobo twin 8" drive, TRS 80 5Meg hard drive, and a set of Percom double density drives all attached to the back of the computer. The system is booting off the Percom drives using LDOS 5.1.3. Click image for larger image.
 Close up of the drives.
Unfortunately my copy of CP/M for the MAX 80 won't boot on a single sided 8" Lobo drive. I need a 77 track DD drive, like a Shugart 850.
I have no idea whether the TRS 80 5 mb hard drive actually works, but it made for a good picture.">... [ read more ]
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Off The Hook Interview re: VCF E 8by billdeg Total messages in this thread: 1 I was interviewed on the "Off The Hook" radio program by 2600 Magazine's Emmanuel Goldstein. Subject: VCF East 8.0, and a little about the upcoming HOPE conference talk Evan K and I will be doing there in July: The segment starts about 31:35 into the show. http://www.2600.com/news/view/article/12222">... [ read more ] |
Help! I need a Tandy WP100 for my fatherby adistel Total messages in this thread: 13 Updated: [ did u find it? ] 04/20/2012 Hi Folks, I am looking to get a Tandy WP100 replacement for my dad. Tandy is a Radio Shack Brand. Does anybody know of a Brother version of this exact word processor? Or another brand name it might be under? My dad is very particular about this exact one. Thanks so much!">... [ read more ] |
MS-DOS S-100 Bus Boardby monahan_z Total messages in this thread: 2 Updated: [ 8088 S-100 board update ] 04/10/2012 For those that may be interested I have written up a detailed description and construction details of the new MSDOS Support S-100 bus Board that Andrew & I have completed. A while back we decided to try and put together a kind of "catch all" S-100 board that would cleanup some loose ends need to easily run MSDOS on an S-100 system and with our future CPU boards. Here is what we could fit on one S-100 board. Please go here for more information:- http://s1...DOS%20Board.htm In Summary the board contains:- 8259A PIC First of course we need an 8259A interrupt controller. The chip is hard wired to ports 20H and 21H -- ports almost ever PC 8259A in the world is hard wired to these ports! One very useful feature we found on one of our earlier PIC-RTC board was the LED bar that stretched any one of the eight S-100 bus interrup">... [ read more ] |
PDP 8eby billdeg Total messages in this thread: 12 Updated: [ Names for Partitioned RK05 drives ] 03/18/2012 Started work on a PDP 8e full-height rack with DecPak RK05, Decprinter-I, and VT-52 terminal.  Digital PDP/8e Computer
Pictures.
Status: System itself appears to work, in that I can load programs from the toggle switches and do some simple terminal I/O. There is an issue with the disk drive controller, but I will write more about that later. Looking for best way to use a laptop as a terminal to simulate a papertape for program I/O.
Printer has not been tested.">... [ read more ]
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Northstar Horizon DOS on any S-100by billdeg Total messages in this thread: 5 Updated: [ Personalizing CP/M2 24K on Northstar ] 03/18/2012 Been working for the past week and a half to build a set of hardware that I can install into any S-100 computer that will boot the Northstar Horizon DOS system. So far I have a working MDS-A3 card, disks, dual external drives, cable. I am working with various monitor programs to fit the DOS bootstrap at E800 into the system. Been experimenting with different approaches. A lot of work without much to show for it....yet I have also in parallel been trying to get *any* Micropolis disk drive to boot (FDOS). I have a Vector Graphic ZCB single board computer with something called the Northstar Monitor 1.5. Using this as the processor card I can then activate my DAJEN Prom card with DAJEN monitor program to burn ePROMS. The idea is that once I get a working system I can burn it into an ePROM(S). I have a serial switch box that I can use to jump to the differently-configured monit">... [ read more ] |
A New 68000 CPU S-100 Boardby monahan_z Total messages in this thread: 1 For those of you building S-100 bus systems and are following our work, I am delighted to announce that Andrew and I now have an S-100 bus Motorola 68000 CPU board that can be configured as an S-100 Bus Master or as a Bus Slave . In the second configuration the 68K CPU can sit silently in the bus (typically run by a Z80 master) and upon outputting a bit to a port take control completely from the z80 itself running the bus. This switching of CPUs can go back and forth continuously is as described in the IEEE-696 protocol. The board has room on board for a 32KX2 EEPROM pair and 32KX2 Static RAM. The 68K interrupt lines are active and up to 16MG or RAM can be utilized. A simple 68K Monitor is supplied. Further details can be found here:- http://s100compu...K%20CPU%20Board.htm We are taking limited orders for hobbyists that would like to t">... [ read more ] |
DEC PDP 11/40 Projectby billdeg Total messages in this thread: 8 Updated: [ Bootstrap RX02 drive to the PDP 11/40 ] 08/29/2010 This weekend my wife and I drove 1200 miles to pick up a working PDP 11/40, RL02 disk drive, and Decwriter II from A. Carder in South Carolina. He's an expert on the PDP 11/40 and runs this web site: http://www.woffordwitch.com Here are the initial pics before I started working. ">... [ read more ] |
Xerox 8010 Starby billdeg Total messages in this thread: 3 Updated: [ Xerox Star 8010 ] 02/27/2012  The XEROX model 8010 was known as the Xerox Star because that was the name of its application software. Before the Apple Lisa and Apple Macintosh, the "Star" is generally accepted to be the first stand-alone commercial computer to employ the graphical user interface / desktop metaphor. This particular system is missing the side panels, wheels, and is not fully operational. The notes to follow describe what steps have been taken to stabilize and hopefully restore this system. Aside from the ugliness of the exposed steel under carriage, the only real problem that I have detected so far is the Quantum Q 2040's drive belt, and possibly some bad RAM. Click image for larger view.
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Archiving and Copying Software 101by billdeg Total messages in this thread: 1 Kelly Leavitt and I will be doing a workshop at the Vintage Computer Festival East 2012 this May. This thread will contain notes and ideas as I think of them. Tools: Laplink Serial Terminal Media Conversion Programs Image Disk Catweasel SD card / USB drive devices ">... [ read more ] |
Xerox 820 II CP/M disks avail.by billdeg Total messages in this thread: 3 Updated: [ Xerox 820 disks compatible with 820-II? ] 02/26/2012 Hi - I just successfully created two boot disks for a Xerox 820 II. CP/M 2.2C. I have tested the process, works. Contact me if you're attempting to restore a Xerox system and need a boot disk. Copies are for restorative purposes only, only where permitted by law, educational use only, and so on. I have an extra manual as well, for a fair $$. I will put up pics of the system when I have the chance.">... [ read more ] |
Commodore 8296 Computerby billdeg Total messages in this thread: 9 Updated: [ 8+V Out from pwr supply bad ] 02/05/2012 OEM Commodore? "Malvern Particle Sizer" http://www.vin...alvern_8296/ Initial inspection of unit - does not work. 1. Monitor electronics loose 2. Made in England but US electric compat. 3. Took off monitor, unplugged from base unit. 4. The power was disconnected, board detached from monitor. I re-attached, no screen output. 5. Disk drive gave familiar long blink/2 short blinks of a IEEE drive with a good controller. Internal cable IEEE. 6. The P/N of the drive controller is 251203 REV B 1983. (This is the sfd-1001 I have been told...) 7. Motherboard: "80/40 column CPU 64/128 Ass number 324645" 8. Add on card above motherboard using two connectors to attach to mother board, with power: "Malvern Instruments Ltd." "MSM82C55A-5RS" "42041" "2,5 PC" 9. No keyboard response to Shift+RUN/STOP 10. Can hear trans">... [ read more ] |
Replacement teletype print hammer headby billdeg Total messages in this thread: 1 If you've finally acquired a teletype for your vintage computer, you need to replace the rubber print hammer head because it will have disintegrated. It will feel like a gummy bear candy. The acknowldeged printer hammer head replacement for the Teletype model 33 is a PVC tube, fit over the hammer like a sheath, but I have found recently that these last less than 100 hours before a the tube needs to be replaced. A permanent divot will form on the tube where it strikes the cylinder, making it useless. So here is a tip - if you use your teletype regularly, replace the hammer pad each time you replace the printer ribbon. Here is my Teletype 101 primer - how to set up an ASR 33 for use with a computer. ">... [ read more ] |
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Updated: [ Profile 5MB Hard Drives ] 05/08/2012