PS/2 Keyboard Interface User’s Manual Cloud-9 3749 County Road 30 SE Delano, MN 55328 Cloud-9 1 www.cloud9tech.
PS/2 Keyboard Interface © 2013 Cloud-9 All Rights Reserved All portions of this hardware are copyright and are the proprietary and trade secret information of Cloud-9. Use, reproduction or publication of any portion of this material without the prior written authorization of Cloud-9 is strictly prohibited. PS/2 Keyboard Interface User Manual © 2013 Cloud-9 All Rights Reserved Reproduction or use of any portion of this manual, without express written permission from Cloud-9, is prohibited.
Table Of Contents PS/2 Keyboard Interface............................................................................................................ 1 User’s Manual ...................................................................................................................... 1 1. Congratulations! ................................................................................................................... 4 2. Installation .......................................................................
1. Congratulations! Thank you for purchasing the PS/2 Keyboard Interface, another one of the fine products offered by Cloud-9. This product was designed to be used with the Radio Shack TRS-80 Color Computer 1,2 and the Tandy Color Computer 3. The interface connects to the CoCo via the standard keyboard connector. Because it emulates a real CoCo keyboard at the hardware level, no special software drivers are required.
2. Installation The following is a step by step instruction guide on how to install your new PS/2 Keyboard Interface board into your system. Before you start, make sure that you have the AC power plug removed from the wall. If a multi-pack is present, make sure that the power is removed before removing it from the CoCo’s cartridge port. Make sure that you have a static free area when performing this installation. Required Tools 1. Phillips screwdriver 2. 1/4” nut driver Kit Inventory List 1. 2. 3. 4. 5.
Figure 1 1. Make sure all power is removed and all cables unplugged from the Color Computer. 2. Remove all screws on the bottom of the computer. Note that the shorter screws are removed from the front of the computer by the keyboard, longer screws will be placed in the rear. Damage will occur to the case if you place the long screws in the front of the case. 3. Remove the keyboard from it’s mounting position and motherboard connection. 4. Plug the PS/2 interface into the CoCo’s mylar keyboard connector.
Figure 2 9. The white wire alligator clip connects to the CoCo's reset button. On the CoCo 3, the rightmost pin on the top of the reset button is where the clip should go, refer to figure 3. Figure 3 10. Close the cover and replace the screws that were removed in Step #2. Watch the screw lengths. 11. Connect all cables , cords and apply power.
Optional Pass Through Connector The optional pass through connector assembly allows both keyboards to function. Performing the installation above, the CoCo’s internal keyboard was not connected, thus it will be unable to be used. This connector assembly ties both the CoCo’s keyboard and the PS/2’s keyboard matrix chip in parallel. See figures 4 & 5 for the connector installation.
3. Operation Key map If you take a close look at both a CoCo and AT keyboard, you will soon realize that there is a distinct difference in the layout of non-alphabetic keys. This interface supports the PS/2’s keyboard map. Under NitrOS-9 almost all keys are produced with one exception, ` key . If under RSDOS and a non displayable key is pressed, the interface adapter will output the proper scan to produce the key, but Extended Color Basic will not interpret it for proper display.
Macro Keys - Custom A custom sequence of keystrokes can be associated with each macro key, F3-F12. The sequence is re-played whenever the key is hit. This is especially useful for commonly used commands, and for defining application specific key combinations. The macro sequences are re-definable at any time through the keyboard, and are saved indefinitely. Each of the ten available macro keys can have up to 50 keystrokes stored. The sequence is stored exactly as typed.
4.
Manual Revision 1.3 - April 15, 2015 Cloud-9 3749 County Road 30 SE Delano, MN 55328 Cloud-9 12 www.cloud9tech.
