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Thank you for purchasing a KIM-1 I/O expansion board, which has been one of our most popular
products. It was developed as a result of what capabilities we wanted to add to our KIM-1
collection to make it easier to use and interface with more common communication standards.
This board has been sold with few changes for many years, but the revision C board has a number
of changes to address needs of our customers:
Power connector now has three terminals instead of four.
•
A power LED has been added.
•
The audio connectors are now a more common 1/8
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The KBD/TTY option is now set via a switch instead of a jumper.
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Smaller board.
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Silkscreen labels instead of copper.
•
For references to direction through this document, the board is assumed to be in "normal"
position, with the edge connector facing to the right, ready to plug into the KIM's Application
connector. The Application connector is along the lower, left-hand edge of the KIM. The
Expansion connector is the upper connector.
Installation
We're going to begin the installation in a somewhat unusual way... we're not going to plug the
board into the KIM-1 at first. Trust me, this will make sense eventually.
The first step is to connect a 5 volt power supply and ground to the green J1 connector at the
upper left hand corner of the board. There are three terminals on this connector, each of which is
labeled just to the left of the connector. Make sure you connect a well-regulated 5 volt DC supply
that is capable of at least the 1.2 amps required of the KIM. If you wish to use the cassette
interface, you also need to connect a 12 volt supply on the appropriate jack on J1. The KIM-1
does not use 12 volts except for the cassette interface, so if you don't need this, then there is no
need for the 12 volt supply.
Corsham
T echnologies,
L LC
www.corshamtech.com
617
S tokes
R oad,
S uite
4 -‐299
Medford,
N J
0 8055
KIM-‐1
I /O
B oard
Revision C or Later Boards
March 2013
th
inch.
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Table of Contents
Summary of Contents for Corsham Technologies KIM-1
- Page 1 1.2 amps required of the KIM. If you wish to use the cassette interface, you also need to connect a 12 volt supply on the appropriate jack on J1. The KIM-1 does not use 12 volts except for the cassette interface, so if you don’t need this, then there is no...
- Page 2 RETURN key on your Hyperterm session, and the KIM should immediately respond. If you’ve never used a terminal with your KIM, you should reference section 4.3 of the KIM-1 User Manual for a list of commands and examples for using it. The interface is not intuitive...
- Page 3 Cassette Interface The I/O board has two connectors and a jumper for setting up the KIM tape storage system. J6, labeled AUDIO OUT, is meant to go to the recorder’s microphone in line. J4, labeled AUDIO IN, goes to the recorder’s headphone jack. The jumper JP2 is used to select whether you need to drive the microphone with the AUDIO HI or AUDIO LO line from the KIM.
- Page 4 This is memory block decode header. If you refer to Chapter 6 in the “KIM-1 USER MANUAL”, you’ll see an explanation of the lines K1 to K4, and how to go beyond the first 8K block that is decoded by the KIM memory decode logic. This header brings all the associated pins to one place for easy expansion.
- Page 5 J9. J9 is meant to have a cable plug between it and J2 of my 4K memory expansion board. J9 pin 1 is ground, while pin 2 is the output. Note that you must externally pull-up this line. This connector mates with the matching connector on Corsham Technologies’ KIM-1 4K Memory Board.
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