For Starters Maybe Join the Google Group
- Starting the Build -
DO NOT Install any other components
a.c GND is Cabinet/Chassis GND and Should Connect to the Back Plane GND too!
What you get with the JAIR 8080A CPU Board;
EPROM & SD Card Software
10-PIN Header to Serial 9-PIN "D" Connector
The JAIR is an all-in-one board needed to be a stand alone Altair 8800 computer
Buy from deramp.com/altair_8800c
The 8800c Front Panel board set is sold as two bare boards only
50 PIN Ribbon Cable from Front Panel to Interface Board
Altair 8800c Front Panel BOM.xlsx
- Time to Play and Learn Some of the Popular Software -
- Altair Software from other websites -
Still Too Bored?
MITS Altair 8800 CPU Manual .PDF
Scanned Image of Original MITS Altair 8800 CPU Parts List circa19750207
8-PIN CPU to Front Panel Connector
https://deramp.com/2SIOJP.html
One 2716 or 2732 EPROM, or 2816A EEPROM socket
Automatic EPROM disable allows full 64K-bytes of RAM
Power-on/reset jump start
Improved power-on clear circuit, eliminates Reset switch toggles
Support for S-100 systems without front panels
Support for Z-80 CPU's
FDC+ is an enhanced version of the original MITS 8" floppy disk controller
100% compatible drop-in replacement for the original two-board Altair FDC
FDC+ includes up to 64K of RAM and 8K of PROM that can be separately enabled
RAM can be enabled in 1K increments
PROM can be enabled in 256 byte increments
Minidisk controller compatable
Shugart SA-800 (or equivalent) drives compatable
5.25" Shugart SA-400 (or equivalent) drives compatible
Hard and Soft Sectored Media Support
96 TPI, High-Density 5.25" Drive compatiblity like Teac 55-GFR
FDC+ includes built-in, high speed serial port that can connect to a PC running a serial disk server
FDC+ Manuals, Software and Related Resources
Notes Connecting and Using the FDC+ Serial Drive Server Windows Program
Moving towards the five board Altair 8800 System B
Visit the S100Computers.com website
Vintage S-100 Computer Stuff For Sale
Vintage Motorola MEK6800D1 For Sale
Build Ideas to Help Make the Job Faster and Easier
Altair 8800c Cabinet
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Altair 8800c Cabinet
Power Supplies
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Power Supplies
Back Plane
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Back Plane
JAIR 8080A CPU Board
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Altair 8800 CPU Board
Front Panel Boards
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Front Panel Boards
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88-2SIOJP Board
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FDC+ Board
Contact: Todd Goodman = tacoman656 gmail com to buy the blank board
The build on this is simply installing all the S-100 card slot connectors and Power Connector.
DigiKey.com or Mouser.com
6-PIN Power Connector Male & Female and wires
AllElectronics.com
Add jumper wires across the six "fuse" positions
or install the fuses, although they're not really needed since the power supplies shut down to prevent blowing anything in the computer up.
I had already started building the back plane when I found I wouldn't need all the other components.
After installing the 9 edge connectors and the power connector, the three LEDs and their associated resistors is all that's needed.
The fuses should just be jumper wires.
The recommended power supplies are smaller switching type.
The old giant heavy analogs are not used anymore.
MEAN WELL USA Inc.
You need TWO: "RS-25-15" for +15V and -15V
Digikey.com
or
Mouser.com
or
JameCo.com
You only need ONE: "HRP-75-7.5" for +8V
Digikey.com
or
Mouser.com
or
JameCo.com
Contact: Josh Bensadon jbensadon = hotmail com to buy the blank board
8080A CPU
Altair 8800 8-PIN Front Panel Connector
IMSAI 8080 16-PIN DIP Front Panel Connector
Up to 64K RAM System Memory
32K EPROM for Boot Strap Programs
Two RS-232 Serial Ports
SPI Serial Peripheral Interface
SPI SD Memeory Card
8-BIT Parallel I/O
The JAIR 8080A CPU Board Manual
Find the well done BOM (Bill of Materials) in the manual
or
10-PIN Header to Serial 9-PIN "D" Connector
JAIR 8080A CPU Board on S100Computers.com
Contact: Mike Douglas = deramp5113 yahoo com
3D Printer Male 9-PIN "D" Adapter .STL
Yellow and Green
3D Printer Female 9-PIN "D" Adapter .STL
Blue and Red
Contact: Mike Douglas = deramp5113 yahoo com
The Lost 1975 Altair Software Library
Some of this translates to any Altair 8800 or S-100 Computer
Getting Started with the Altair-Duino Pro
Got a link to share with everybody? Please email it to me: wperko@brainless.org
Replica Boards Moving Closer to an Original Altair 8800
Contact: Gary Kaufman = gkaufman the-planet org
Contact: Martin Eberhard = mfeberhard gmail com
SetUp for primary Altair 8800 serial ports A (Console) and B (External I/O)
Two serial ports compatible with the MITS 88-2SIO
https://deramp.com/fdc_plus.html
I'm looking for one or a suitable replacment.
I'm looking for one of these too.
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