Epson PX-8 Technical Manual page 24

CHAPTER 2
PRINCIPLES OF OPERATIONS
2.1 General ........... ........................................................................................................ 2-1
2.2 Power Supplies .... .................................................................................................. 2-4
REV.-A
2.3 CPU Operations ..................................................................................................... 2-29
2.4 Clock Generator Circuit ........................................................................................ 2-50
2.5 Jumper and Switch Setting .................................................................................. 2-57
2.6 Reset ....................................................................................................................... 2-63
2.7 Keyboard ................................................................................................................ 2-64
2.8 LCD Unit ................................................................................................................. 2-73
2.9 A-D Converter ........................................................................................................ 2-85
2.10 ROM Capsule ......................................................................................................... 2-96
2.11 RS-232C Interface ................................................................................................. 2-100
2.12 Serial Interface ...................................................................................................... 2-108
2.13 Speaker Circuit ...................................................................................................... 2-111
2.14 Dynamic RAM ........................................................................................................ 2-114