User`s guide

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Table of Contents
0. PREFACE...............................................................................................................................................V
0.1 WELCOME TO THE AR-B1320 CPU BOARD .................................................................................V
0.2 BEFORE YOU USE THIS GUIDE..................................................................................................... V
0.3 RETURNING YOUR BOARD FOR SERVICE..................................................................................V
0.4 TECHNICAL SUPPORT AND USER COMMENTS..........................................................................V
0.5 ORGANIZATION..............................................................................................................................VI
0.6 STATIC ELECTRICITY PRECAUTIONS.........................................................................................VI
1. OVERVIEW.......................................................................................................................................... 1-1
1.1 INTRODUCTION............................................................................................................................ 1-1
1.2 PACKING LIST............................................................................................................................... 1-1
1.3 FEATURES .................................................................................................................................... 1-2
2. SYSTEM CONTROLLER .................................................................................................................... 2-1
2.1 MICROPROCESSOR .................................................................................................................... 2-1
2.2 DMA CONTROLLER...................................................................................................................... 2-1
2.3 DRAM CONFIGURATION ............................................................................................................. 2-2
2.4 I/O CONTROLLER......................................................................................................................... 2-2
2.5 I/O PORT ADDRESS MAP ............................................................................................................2-3
2.6 INTERRUPT CONTROLLER......................................................................................................... 2-4
2.7 SERIAL PORTS ............................................................................................................................. 2-5
2.8 PARALLEL PORT .......................................................................................................................... 2-7
2.9 TIMER ............................................................................................................................................ 2-9
2.10 REAL-TIME CLOCK AND NON-VOLATILE RAM.................................................................... 2-10
2.11 WATCHDOG TIMER ................................................................................................................ 2-11
2.12 FLASH DISK............................................................................................................................. 2-11
3. SETTING THE SYSTEM ..................................................................................................................... 3-1
3.1 BOARD LAYOUT ........................................................................................................................... 3-2
3.2 CPU BASE CLOCK SELECT (JP1)............................................................................................... 3-4
3.3 SWITCH SETTINGS (SW1)...........................................................................................................3-4
3.4 EXTERNAL LED HEADER (J1)..................................................................................................... 3-4
3.5 KEYBOARD CONNECTOR (J2).................................................................................................... 3-5
3.6 RESET HEADER (J3) .................................................................................................................... 3-5
3.7 SPEAKER HEADER (J4)............................................................................................................... 3-5
3.8 POWER CONNECTOR (J5) .......................................................................................................... 3-6
3.9 PRINTER CONNECTOR (CN1)..................................................................................................... 3-6
3.10 FLOPPY CONNECTOR (CN2)................................................................................................... 3-7
3.11 SERIAL PORT CONNECTORS (CN3, CN4 & CN5) ................................................................. 3-7
3.11.1 RS-232C Connectors (CN3 & CN4) .......................................................................................................3-8
3.11.2 RS-485 Connector (CN5).......................................................................................................................3-8
3.11.3 RS-485 Terminator (JP2 & JP3).............................................................................................................3-9
3.12 HARD DISK CONTROLLER (CN6)............................................................................................ 3-9
3.13 PC/104 CONNECTOR (CN7 & CN8) ....................................................................................... 3-10
3.13.1 64 Pin PC/104 Connector – cn8 (Bus A & B) .......................................................................................3-10
3.13.2 40 Pin PC/104 Connector - CN7 (Bus C & D) ......................................................................................3-10
3.13.3 PC/104 Channel Signal Description.....................................................................................................3-11
3.14 LED INDICATOR (LED1 & LED2)............................................................................................ 3-12
3.14.1 power led (led1) ...................................................................................................................................3-12
3.14.2 Status led (led2)...................................................................................................................................3-12
3.15 USING THE WATCHDOG TIMER ........................................................................................... 3-13
3.15.1 WD enable register - INDEX 37H.........................................................................................................3-13
3.15.2 WD Report register - INDEX 38H.........................................................................................................3-14