I.
Getting Started ...................................................................................................................5
What This Manual Covers .................................................................................................5
The Power Supply ..............................................................................................................6
What You See .....................................................................................................................7
II.
COSMAC VIP Operation ..................................................................................................9
Memory Write ........................................................ .............................. ............................9
Memory Read ......................................................... ....................................................... 10
Tape Write .............................................................. ....................................................... 10
Tape Read ............................................................... ....................................................... 10
III.
Branch Instructions ............................................... ....................................................... 13
Applying CHIP-8 .................................................... ....................................................... 16
Some Program Ideas .............................................. ....................................................... 17
IV.
VIP Machine Coding ...................................................................... ................. .............. 19
V.
Logic Description ............................................................................ .............. ................. 21
How Memory is Addressed ............................................................ ............................... 21
VI.
Some Expansion Ideas .................................................................... ............................... 24
VII.
Troubleshooting Hints ................................................................................................... 27
No Sound ......................................................................................................................... 27
No Display ....................................................................................................................... 27
Other Problems .............................................. ................................. .............................. 27
Signal Tracing ................................................ ............................................................... 27
Last Resorts .................................................... ............................................................... 28
Beeper Program ............................................. ............................................................... 29
Cassette Phase Test ........................................ ............................................................... 30
Cassette Data Test .......................................... ..................... .......................................... 31
Memory Test Program.................................................................................................... 32
Contents
......................................................... ......................................................7