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Color Computer 1/2/3 Hardware Programming, Chris Lomont, V0.82
Color Computer 1/2/3 Hardware Programming, Chris Lomont, v0.82 Color Computer 1/2/3 Hardware Programming Chris Lomont, Aug 2007, version 0.82 This document collects and details hardware programming information for the TRS-80 Color Computer, versions 1, 2, and 3. Although it has some tutorial information in it, it is designed to be a reference. Many areas also apply to the Color Computer Clones such as the British Dragon 32/64. It is compiled and edited by Chris Lomont, www.lomont.org. Send comments, corrections, and errors to CoCo3 at the above domain. Please don't repost this on the web, but point to this copy, so eventually all information is corrected and integrated. This document is compiled from many sources, listed in the Bibliography. If you feel this infringes any of your copyrighted material, email me with your material, and I will remove or rewrite from scratch the offending sections. Hex numbers start with a $, as in 255=$FF. Addresses like $FFFE (65534) give the decimal in parentheses. 16-bit addresses like $B0F1 are in 6809 CPU address space. On the Color Computer 3, 20-bit addresses like $70FFF are in GIME address space. Also on the Color Computer 3, the Memory Mapping Unit (MMU) maps eight 8K pages from the GIME space into CPU space. Many sections (marked TODO) need a lot more work, which I will do given time. DISCLAIMER: All information provided as is, etc. Use at your own risk. Version History 0.8 June 2006 Initial version and organization of material. -
Color Computer Graphics.Pdf
COLOR COMPUTER GRAPHICS by William Barden, Jr. Radio Shack A Division of Tandy Corp. Ft. Worth, Texas 761 02 Color Computer Graphics: © 1982 Tandy Corporation, Fort Worth, Texas 76102 U.S.A. All Rights Reserved. Reproduction or use of any portion of this manual without the express written per mission of Tandy Corporation is prohibited. While reasonable efforts have been taken in the preparation of this manual to insure its accuracy, Tandy CO!poration assumes no liability resulting from any errors or omissions in this manual or from the use of the information obtained herein. TRS-80 Color Computer System Software: © 1982 Tandy Co1poration and Microsoft. All Rights Reserved. The system software in the Color Computer microcomputer is retained in a read only memory (ROM) format. All portions of this system software, whether in the ROM format or other source code form, and the ROM circuitry are copyrighted and are the proprietary and trade secret information of Tandy Corporation and Microsoft. Use, reproduction, or publication of any portion of this material without the prior written authorization of Tandy Corporation is strictly prohibited. Design and Production by Ellen Klempner. Editorial Supervision by Tom McMillan. Illustrations by Jack Wittry. Typeset by LeWay Composing Service. 10 9 8 7 6 5 4 3 Foreword We've known William Barden, Jr. for several months now. A bunch of the guys and I were watching the Dodgers on the color television in my coffee shop, the BYTE TO EAT, when suddenly in walked a guy carrying what appeared to be a gray box with keys on it. -
Color Computer 1/2/3 Hardware Programming
Color Computer 1/2/3 Hardware Programming ****************************************************************************** * Color Computer Hardware Introduction CoCo 1/2/3 * This is a document collecting and detailing hardware programming information ****************************************************************************** for the TRS-80 Color Computer, versions 1, 2, and 3. Although it has some This document covers the hardware in the COlor Computer, versions 1, 2, and 3, tutorial information in it, it is designed to be a reference. often called the CoCo1, CoCo2, and CoCo3. Compiled and edited by Chris Lomont July 2006, www.lomont.org. Version 0.8. The CoCo3 supports the CoCo 1 and 2 hardware in CoCo 1/2 compatibility mode, Send comments, corrections, and errors to CoCo3 at the domain above. described elsewhere in this document. Please don't repost this on the web, but point to this copy, so eventually all information is corrected and integrated. The CoCo runs on a Motorola 6809 chip, details of which are in a different document. This document is compiled from many sources. If you feel this infringes any of your copyrighted material, email me with your material, and I will remove The main hardware interfaces are: or rewrite from scratch the offending sections. CoCo 1/2/3: PIA - Peripherial Interface Adapter - General hardware Input/Output ALL ADDRESSES AND NUMBERS ARE IN HEX unless in parentheses! Addresses like SAM - Synchronous Address Multiplexer - Determines how data moves FFFE(65534) give the decimal in parentheses. 16 bit addresses are CPU address VDG - Video Display Generator - Converts RAM to images space, 20 bit addresses are in GIME address space. Note that the Memory Mapping Unit maps eight 8K pages from the GIME space into CPU space.