ACT apricot - Page 10

CONTENTS
SIO PIN DETAIL ..................................................... 42
System Connections ........................................... 43
Channel A Connections ...................................... 44
Channel B Connections ...................................... 47
2-8 PARALLEL INTERFACE
CONTENTS ............................................................... 1
INTRODUCTION .. .......... .... ......... ...... ... ................ ... 1
DESCRIPTION ...................... ..... .... ......... ................... 3
General ................................................................... 3
Printer Interface ...................................................... 4
System Control Interface ....................................... 6
2-9 SOUND GENERATION
CONTENTS ............................................................... 1
INTRODUCTION .... ................ ......... .......... ......... ..... 1
DESCRIPTION ..... ..... .......... ...... ..... ...... ... ..... .............. 2
General ................................................................... 2
Tone Generation .................................................... 4
Noise Generation ................................................... 6
2-10 EXPANSION SLOTS
CONTENTS ........ : ...................................................... 1
INTRODUCTION . ............... ......... ............................ 1
DESCRIPTION ........................................................... 3
Electrical Specification .......................................... 3
Pin Detail .. .. ... . ............. .. .. .. .. ..... .. .. .............. ............ 5
Address Allocation .............................................. 10
Expansion Board
Layout Detail.......................... 10
2-11 DISK DRIVE
CONTENTS ............................................................... 1
INTRODUCTION ..... ............... ........... ...... ...... .......... 1
DESCRIPTION ........................................................... 2
- General ................................................................... 2
Interface
Connections ............................................ 3
Disk Drive Mechanism .......................................... 7
Read/Write Head .................................................... 7
Head Positioning Mechanism ................................ 7