TABLE OF CONTENTS
1. PRODUCT OVERVIEW........................................................................................1-1
2. ONBOARD SUBSYSTEMS...................................................................................2-1
2.1 PASSIVE BACKPLANE............................................................................................2-1
2.2 USER INTERFACE..................................................................................................2-1
2.3 STAND-ALONE OPERATION...................................................................................2-2
2.4 DISKLESS OPERATION...........................................................................................2-2
3. UNPACKING...........................................................................................................3-1
3.1 UNPACKING .........................................................................................................3-1
3.2 CONTENTS...........................................................................................................3-1
4. SAFETY PRECAUTIONS.......................................................................................4-1
4.1 STATIC ELECTRICITY............................................................................................4-1
4.2 STORAGE ENVIRONMENT......................................................................................4-1
4.3 POWER SUPPLY ....................................................................................................4-1
5. CUSTOMIZING THE BOARD...............................................................................5-1
5.1 INSTALLING MICROPROCESSOR AND FAN...............................................................5-1
5.2 INSTALLING MEMORY ..........................................................................................5-1
5.3 MEMORY AND I/O MAPPING.................................................................................5-3
5.3.1 Memory Mapping.........................................................................................5-3
5.4 EXPANDED AND EXTENDED MEMORY ...................................................................5-4
5.4.1 Expanded Memory........................................................................................5-4
5.4.2 Extended Memory.........................................................................................5-4
5.5 MEMORY MODE...................................................................................................5-4
5.6 SHADOW RAM.....................................................................................................5-4
5.7 CONFIGURING THE TEK-AT4LPLUS....................................................................5-5
5.8 SW1 - CONFIGURATION JUMPERS .........................................................................5-5
5.8.1 SW1 (1-2) Selecting BIOS Boot Option.........................................................5-5
5.8.2 SW1(3-4) Selecting COM1/COM2 for VT00 or Download Mode...................5-6
5.8.3 SW1(5-6) Enabling VT100 Mode ..................................................................5-6
5.8.4 SW1(7-8) Enabling Serial Download Mode...................................................5-7
5.9 INSTALLING SUPERVISOR UTILITIES.......................................................................5-8
5.9.1 Special Note on Register 201h......................................................................5-8
5.9.2 Watchdog Timer...........................................................................................5-8
5.9.3 Power Failure Detector (PFD) .....................................................................5-9
5.9.4 Low Battery Detection................................................................................5-10
5.10 ATTACHING THE AT4LPLUS TO ENCLOSURE.................................................... 5-10
