Search Posts:

S-100 Buffered Prototype Board

SHARE

Return to Threads

  S-100 Buffered Prototype Board by John Monahan - 10/22/2009 12:24
Andrew Lynch and I have just completed the layout of a new S-100
Prototype Board that is designed to help take away the initial drugery
of building S-100 prototype boards. We have laid out the board so all
the address and data lines are buffered through 74LS245's or
74LS244's. Most of the common S-100 bus control and status signals are
also buffered. So the user can right away get down to building useful
circuits without the bus connection/IC overhead. Also the board is
arranged so a daughter piggyback (no S-100) board can be attached via
a series of connectors. This way you can have cheap simple test boards
made before you "burn" your own real (more expensive) S-100 board.
Currently we are getting 10 of these boards made for ourselves. If
there is a strong demand we could possibly do more for others. We
don't have an exact price yet but it should be south of $50/board. If
you have a real interst in a board(s) let me know. If we send out
boards, they will come with absolutly no warrenty or instructions.
Only a schematic which can be seen here is supplied. Nite these will be bare boards. You add your own chips etc.

http://www.s100computers.../Cards%20For%20Sale.htm




Reply
  I/O board by Bill Degnan - 10/23/2009 22:49
I would love to have a configurable I/O board that I can adjust without soldering jumpers to match the needs of whatever S-100 system I am testing and the PROM space used, ports, etc. I am not skilled enough to make such a thing, but I bet this card would help get one started more quickly. Hope it works out for you.
-Bill

Reply

Resources:


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
  • IMSAI 1.4 BASIC vs. MITS 8K BASIC
  • 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:


    electronic brain homeostat quadruple coil

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