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CDP18S711
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Troubleshooting
Appendix E - Logic Diagrams
Pin Signal
Testing Your Cassette System
The Power Supply
Using the Operating System
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Contents
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VIP-311
RCA COSMAC VIP CDP18S711 Instruction Manual
ACKNOWLEDGMENT
Contents
Contents Continued
What This Manual Covers
1. Getting Started
The Power Supply
1. Getting Started
What You See
Turning It On
Memory Write
Using the Operating System
11.COSMAC VIP Operation
Tape Read
Memory Read
Tape Write
11.COSMAC VIP Operation
Testing Your Cassette System
Branch Instructions
How to Change and Use the Variables
III.CHIP-8Language Programming
Using the Display Instructions
0200 A20A I=020A 0202 6100 V1=00 0204 6200 V2=00
III. CHIP-8 Language Programming
0206 D125 SHOW 5MI@VlV2 0208 1208 GO 020A F090
020C F090 020E F000
Applying CHIP-8
111. CHIP-8Language Programming
Some Program Ideas
25.PROGRAMMED SPOT - Introduce children to programming concepts by letting them preprogram the movements of a spot or object on the screen
VIP Machine Coding
IV. Machine Language Programming
Machine Language Programming Summed Up
How the Input/Output Works
V. Logic Description
How Memory Is Addressed
pressed. A 62 machine instruction causes the least significant 4 bits of memory byte to be latched into U13. These 4 bits are decoded to bring one of the 16 U13 output lines low. If the key that corresponds to this output line is pressed, the CDPI802 EF3 input will go low. The 4-bitcodes latched into U13 correspond to the equivalent key positions. After the program send8 a 4-bitcode to U13, it subsequently examines the EF3 line to see if the key corresponding to this code is pressed or not. In this manner, a program can determine when any specific key is pressed or can sequentially scan all keys while waiting for any one to be pressed. Key debounce delays must be provided in the program when required. A program can also cause a speaker tone to occur when a key is pressed. Only one key at a time should be pressed with this method of interfacing the keyboard
V1. Expansion Considerations and Connections
Using the Byte Input/Output
I RCA COSMAC VIP Instruction Manual
Using the Expansion Interface
Some Expansion Ideas
Table III - External Option Terminal Connections
Pin Signal
V1. Expansion Considerations and Connections
2.Composing poetry or pictures with printer output
Other Problems
VIL Troubleshooting Hints
Signal Tracing
No Sound
Last Resorts
Beeper Program
Appendix A - Test and Operating Data
Byte Pattern for Displaying COSMAC
Test Program
Cassette Attachment Diagram Cassette Phase Test
Signals
Cassette Data Test
Memory Test Program
Cassette Recording Guidelines
Operating System Listing
Appendix B - Operating System
R3 = Machine Language Subroutine Program Counter
Operating System Register Table
Operating System Summary
CHIP-8Interpreter Listing
Appendix C - CHIP-8Interpreter
Interpreter
CHIP-8Memory Map
CDP1802 Register Use for CHIP-8
Appendix C - CHIP-8Interpreter
RCA COSMAC VIP Instruction Manual
CHIP-8User Notes
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1. VIP Kaleidoscope
2. VIP Video Display Drawing Game
Fig. E-5Power Supply Circuit and Byte
Appendix E - Logic Diagrams
Fig. E-1Microprocessor and Display Interface
Circuits
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Appendix E - Logic Diagrams
Fig. E-2- ROM Circuits and Expansion Interface
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Appendix E - Logic Diagrams
Fig. E-4- RAM Circuits
RCA COSMAC VIP Instruction Manuel
RCA COSMAC VIP Instruction Manual
Appendix F
Board Layout, Parts List, and Expansion Notes
2.Parts List for RCA COSMAC VIP CDP18S711
1.Printed Circuit Board Layout
RCA COSMAC VIP Instruction Manual
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2. Parts List for RCA COSMAC VIP CDP18S711
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Resistors - Supplied 1 /4 W except as noted
RCA COSMAC VIP Instruction Manual
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3. COSMAC VIP Expansion Notes
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