2
CONTENTS
MANUAL ORGANIZATION .....................................................................................................................6
1. INTRODUCTION .................................................................................................................................8
PRODUCT DEFINITION .............................................................................................................8
ZT 8904..........................................................................................................................9
ZT 89CT04 .....................................................................................................................9
ZT 8903..........................................................................................................................9
STAND ALONE ..............................................................................................................9
STD 32 SINGLE MASTER..............................................................................................9
STD 32 MULTIPLE MASTER..........................................................................................9
FEATURES...............................................................................................................................10
DEVELOPMENT CONSIDERATIONS .......................................................................................11
FUNCTIONAL BLOCKS ............................................................................................................11
STD BUS INTERFACE .................................................................................................11
386 EX CPU .................................................................................................................12
MEMORY AND I/O ADDRESSING ...............................................................................13
LOCAL BUS VIDEO......................................................................................................13
SERIAL I/O ...................................................................................................................13
IEEE 1284 PARALLEL PORT .......................................................................................14
PARALLEL I/O..............................................................................................................14
INTERRUPTS...............................................................................................................14
TIMERS........................................................................................................................15
DMA .............................................................................................................................15
WATCHDOG TIMER ....................................................................................................15
REAL-TIME CLOCK .....................................................................................................15
KEYBOARD CONTROLLER.........................................................................................16
AC POWER-FAIL PROTECTION..................................................................................16
2. GETTING STARTED .........................................................................................................................17
UNPACKING.............................................................................................................................17
SYSTEM REQUIREMENTS ......................................................................................................17
MEMORY CONFIGURATION....................................................................................................17
SYSTEM RAM - 16-BIT PSEUDO STATIC RAM...........................................................17
I/O CONFIGURATION...............................................................................................................19
CONNECTOR CONFIGURATION.............................................................................................20
JUMPER DESCRIPTIONS ........................................................................................................21
SETUP......................................................................................................................................21
SYSTEM CONFIGURATION OVERVIEW .....................................................................21
3. STD BUS INTERFACE ......................................................................................................................23
STD 32 OPERATION ................................................................................................................23
STD 32 OPERATION....................................................................................................23
STD 32 BUS COMPATIBILITY ..................................................................................................24
COMPLIANCE LEVELS................................................................................................24
STD BUS INTERRUPTS ...........................................................................................................24
MASKABLE INTERRUPTS ...........................................................................................25
NON-MASKABLE INTERRUPTS ..................................................................................26
RESET......................................................................................................................................27
MULTIPLE MASTER AND INTELLIGENT I/O............................................................................27
MULTIPLE MASTER ....................................................................................................27
INTELLIGENT I/O.........................................................................................................28
SYSTEM REQUIREMENTS..........................................................................................29
MULTIPLE MASTER RESET ........................................................................................30
