Search Posts:

Latest Projects:

My Computer Likes Me when I speak BASIC

by billdeg
Total messages in this thread: 1
The front cover of My Computer Likes Me when i speak BASIC by Bob Albrecht publshed by DYMAX circa 1971-1972. This softcover book was intended to teach BASIC programming to students and persons previously unfamiliar with computers. Students would use this book in a classroom environment in front of a Teletype attached to a mini computer running BASIC.
Here is an example of a lesson, titled "the problem" whose purpose was to demonstrate how the same problem can be solved multiple ways. Click image for larger view.
... [ read more ]

GRiD Compass II Model 1219

by billdeg
Total messages in this thread: 1
Another of Hillary's lost laptops? Obviously this laptop pre-dates the former First Lady's stint with the State Department, but I can only wonder who might have used it. This Compass II 1219 powered up with custom BIOS ROM. Click image for larger view.
Along with this 1219 I picked up a GRiDCASE More GRiD photos">... [ read more ]

DEC PC05 High-speed Tape Reader

by billdeg
Total messages in this thread: 1
Front view of the DEC PC05 high-speed papertape reader. Click image for larger view.
Rear view of same DEC PC05 high-speed papertape reader, where one can see the reader was paired with a PDP 11 system (inset closeup). Click image for larger view.
NEXT - Find the pr11 controller (M7810). Because this is a reader only, it may be possible to use a serial card instead, like a M7800, or with minor modifications.">... [ read more ]

Digital PDP-8 DECUS Music Papertapes

by billdeg
Total messages in this thread: 1
Digital Equipment Corporation PDP-8 Music Program Papertapes 152 152a 162
decus papertapes from 1969 would likely have been written for the a PDP-8i. This is not the same as the RF music program demoed elsewhere on this web site. Click on image for larger view.
TAPE LABELS: 8-152a 8 Music Coding Program Symbolic #1 8-152 8 Music Coding Program Symbolic #2 8-152 Teddy Bear's Picnic Symbolic 8-152a Penny Lane Symbolic 8-152 Joy to the World Symbolic 8-152 Your Mother Should Know Symbolic 8-152a Penny Lane 0037-7720, 0170=7777 0171=7777, 0172=7750, 0173=6020 Binary 8-152 When I'm 64 0037=720, 0170=7776 0172-7750 8-16">... [ read more ]

MAI Jolt 6502 SBC 1975

by billdeg
Total messages in this thread: 2
Updated: [ Origin of the name JOLT ] 12/21/2018
MAI Jolt 6502 microcomputer SBC
The first production 6502-based single board microcomputer - The Jolt pre-dates the MOS KIM and Apple I.
More photos Byte December 1975 ad I had mentioned this system in a "past issue" of when I used to make hard-coded pages for this site. ">... [ read more ]

splicing papertape

by billdeg
Total messages in this thread: 1
Teletype ASR 33 Papertape reader. You can feed a piece of papertape into the reader in local mode to print a section of tape.
I have found that the trick to splicing, aside from having correction patches is sometimes to overlap two pieces of tape, not try to get an exact cut in the program. To do this I stick in an S0 line (filler line) on both sides of the splice. If there is a small tear in a tape that causes the reader to snag, use correction patches. If the rip is too large to patch, you'll have to splice it, just as one would a piece of film. Here are some tips how to do this... Below is a splice of tape, represented by its data. Each 8-bit character is represented by the holes in the tape one at a time as it's fed into">... [ read more ]

Digital Rainbow (PC100-B2)

by billdeg
Total messages in this thread: 8
Updated: [ Monochrome monitor option ] 12/09/2018
DEC Rainbow PC100-B2 with VR241
This is the Rainbow PC100-B2 I restored from three systems' parts. I used the VR241 display from the previous dead Rainbow PC100-B2's I had been working on and now I finally have a system that works. Click image for larger view.
DEC Rainbow base model with VR201
This will not do....these VR201's are hard to find without screen rot. Click image for larger view.
I got this message from I Primus who suggested ways to deal with the VR201: "..The cable to the VR201 is very, very simp">... [ read more ]

Mac 128K with SAD MAC error 041800

by billdeg
Total messages in this thread: 6
Updated: [ Bad internal Drive Seek ] 11/29/2018
yes, but what does 041800 mean exactly? which chip or section is bad? 04 = class code = memory test mod 3 1800 = chip identification codes, in binary combination 1000 is bit 12, chip G9 0800 is bit 11, chip G8 Need two 4264 chips, to replace G9 and G8. Thanks Herb.">... [ read more ]

1968 Hitachi HIDIC 100 Mini Computer

by billdeg
Total messages in this thread: 2
Updated: [ HIDIC 100 Brochure Scan ] 11/23/2018
Hitachi HIDIC100 mini computer brochure cover
The cover of the Hitachi HIDIC 100 Mini Computer brochure. Click image for more photos and a pdf of selected photos, not the full brochure
To do...scan the entire brochure. Anyone have info on this computer? I know of other mini's in the HIDIC line but I never read anything about this one. I believe it's an industrial minicomputer sold only in Japan. I need to find a way to optically scan Japanese or find someone who can read Japanese....stand by.">... [ read more ]

Godbout Static (RAM) But Not Lost

by billdeg
Total messages in this thread: 1
Bill Godbout
Bill Godbout died November 11, 2018 in the "Camp Fire" in Northern California, the worst fire recorded in the history of California. Bill Godbout was an early microcomputer industry pioneer whose company Godbout / Compupro based in the Silicon Valley was known for it's quality products. Godbout started as a surplus electronics parts company that expanded into S-100 bus peripheral card manufacture for MITS Altair and other S-100 systems. Godbout began selling complete S-100 systems in the later 1970's and changed it's name to CompuPro. The CompuPro line of S-100 bus systems were sold well into the mid 1980's. Click image for larger view.
... [ read more ]

Rolm Corp 1601 RuggedNova 1970

by billdeg
Total messages in this thread: 1
Back cover of the Rolm Corporation Model 1601 RuggedNova model minicomputer. Click image for larger view.
Product Brochures and Price List Received this from Classic CMP "...One of the more interesting problems we faced at ROLM MSC (as opposed to the telecom side) was the fact that all hardware was designed to be tri-service. Salt spray and fungal resistance required that the cases be sealed with thermal frames to conduct heat to external heat exchangers, but that created interesting issues when sticking the box on an aircraft (but was a lifesaver with disk drives, as otherwise flying heads had a tendency to crash with altitude). The chassis ended up being quite heavy due to the hammer and drop tests (as others have noted,">... [ read more ]

1967, Developments in Computer Firmware

by billdeg
Total messages in this thread: 1
Cover Electronics April 17, 1967. Click image to download selected pages in PDF format
Interesting short article that describes the state of computer firmware in 1967, and recent developments. This is the copy of Electronics that would have been sold on the day of my birth. What other computers are shown in the PDF linked above? PDP 8 and IBM 1710.">... [ read more ]


by billdeg
Total messages in this thread: 3
Updated: [ Experimenting with Video ] 10/16/2018
BASIS 108 Apple II Clone Computer
The West German-made BASIS 108 was an Apple II clone with a Z80 processor and built-in video features. This unit has 128K RAM. Click image for larger view.
System power checked out, clean inside, boots Apple Pascal OS. No obvious restoration needed. After a more thorough check-out, I will explore the monitor program (6502) and attempt to boot CP/M, and Apple II programs in color. Photos">... [ read more ]

RIP Microsoft Co-founder Paul Allen

by billdeg
Total messages in this thread: 1
Paul Allen Microsoft co-founder
Paul Allen Microsoft Co-Founder 1953 - 2018 Click image for larger view.
I am sure he never saw it, but I once sold Vulcan Electrics, his computer museum project, my Xerox Star computer many years ago, for his computer museum. It's probably in a shed somewhere or stripped for parts. http://www.vul...r-paul-allen-dies-at-65">... [ read more ]

VCF Mid West ECCC 2018

by billdeg
Total messages in this thread: 1
The opening minutes of the 2018 Vintage Computer Festival slash Emergency Commodore Computer Convention, September 15, 2018. Click image for larger view.
Cactus 6502
Z demonstrating his Cactus 6502 computer with front panel. Click image for larger view.
Can you guess what computer is under the hood of this add-on keyboard? Click image for larger view.
... [ read more ]
OLDER POSTS (15 threads per page): 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 |


Buy a Commodore Computer Poster

Popular Topics and FAQs

  • Commodore B Series Tips and Tricks
  • Aerocomp TRS 80 M 1 Expansion Unit DDC
  • Items Wanted
  • Lobo Max 80
  • Zenith Z-19-CN
  • Prototype PET 2001 photo
  • Using Toggle Switches to Analyze Memory
  • Commodore Disk Archive Project
  • PET 2001 Prototype at Gametronics 1977
  • Jim Butterfield Photo
  • IMSAI 8080 With Processor Tech. Cutter
  • Secrecy is the keystone of all tyranny
  • Cromemco System Three
  • Northstar Horizon - Boot Problem
  • Computer History and Restoration Links
  • Commodore BX-256-80 - 8088 Co-processor
  • S-100 board testing with Z-80 ICE
  • Donner 3500 - an early portable computer
  • Digital (DEC) PDP 11/05 NC Assembly
  • Univac 1219 rescue
  • Fido BBS listing node list 6-13-1986
  • PDP 8e
  • MITS 88-2 SIO (2SIO) for BASIC
  • Visual Technology Inc Model 1050
  • Amiga 2500 Restoration
  • The Evolution Of IBM Computers
  • Replacement teletype print hammer head
  • Archiving and Copying Software 101
  • Computers Built 1940 - 1950
  • CBM B-520 (a.k.a B256-80 or B500 256)
  • RCA COSMAC Microkit
  • Commodore 64K C-116 Mods
  • MITS 8800b Turnmon 9600 baud
  • Catweasel, 8in and 5 1/4
  • Raspberry Pi as Gateway to Internet
  • Digital PDP11 late 1969 early 1970
  • PDP 11/40 72 inch cabinet model
  • PDP 11/40 Industrial 11 model
  • Digitial MicroVAX 3100 30 System
  • Digital VAX 4000-200
  • Commodore 64 / 1541 DRIVEKNOCK
  • Booting the System Using RL02 drive
  • PACS: Reflections by Kathleen Mauchly
  • Tele-Graphic Computer Systems Inc.
  • Commodore B Series SID Jukebox?
  • Installing Core into PDP 11/40
  • Setting Up OpenVMS 7.1 DNS CLERK
  • Felt-Tarrant Comptometer Model J
  • NextStation Color
  • Digital Rainbow (PC100-B2)
  • 1970 Compusad Compulogical Tutor
  • Archiving Papertapes Using DSI NC 2400
  • 1976 P.C.C. Features the MAI JOLT 6502
  • 1961 Beckman DEXTIR Computer
  • UNIVAC 1 and UNIVAC File Computer 1
  • Past Issues:

    Eliza code

    This image was selected at random from the archive. Click image for more photos and files from this set.