v
Utility Connector (J16) .................................................................................................................... 2–55
PC Speaker.................................................................................................................................2–57
LED Connection......................................................................................................................... 2–57
Push Button Reset Connection .................................................................................................. 2–57
Keyboard Connections ...............................................................................................................2–57
External Battery Connections ................................................................................................... 2–57
Battery-Backed Clock ......................................................................................................................2–58
Watchdog Timer...............................................................................................................................2–59
AT Expansion Bus ...........................................................................................................................2–62
Onboard MiniModule Expansion............................................................................................... 2–63
Using Standard PC and AT Bus Cards .....................................................................................2–63
Bus Expansion Guidelines......................................................................................................... 2–64
Expansion Bus Connector Pinouts ............................................................................................2–65
Interrupt and DMA Channel Usage ..........................................................................................2–70
SETUP Overview .............................................................................................................................2–72
SETUP Page 1—Standard (CMOS/EEPROM) Setup ......................................................................2–74
Date and Time ...........................................................................................................................2–75
Floppy Drives.............................................................................................................................2–7 5
IDE Hard Disk Drives ...............................................................................................................2–75
Video ..........................................................................................................................................2–77
DRAM Memory ..........................................................................................................................2–77
Error Halt ..................................................................................................................................2–77
System POST .............................................................................................................................2–77
SETUP Page 2—Options/Peripheral Configuration ........................................................................ 2–78
Extended BIOS ..........................................................................................................................2–78
Serial Port..................................................................................................................................2–7 9
Parallel Port...............................................................................................................................2–79
Floppy Interface Enable ............................................................................................................2–80
IDE Interface Enable................................................................................................................. 2–80
Hot Key Setup Enable ...............................................................................................................2–80
Video State.................................................................................................................................2–81
Blank Post Test..........................................................................................................................2–81
Byte-Wide Socket Configuration ...............................................................................................2–82
Serial Boot Loader Enable......................................................................................................... 2–82
Watchdog Timer Configuration .................................................................................................2–82
Local Bus Video Display ............................................................................................................2–82
Flat Panel Display Type ............................................................................................................2–83
SETUP Page 3—Serial Console Configuration ............................................................................... 2–84
The SETUP.COM Program.............................................................................................................. 2–86
Creating Configuration Files with SETUP.COM ......................................................................2–86
Operation with DOS ........................................................................................................................2–87
Utility Software Overview............................................................................................................... 2–88
Technical Specifications
Little Board™/486e CPU Specifications ............................................................................................3–1
CPU/Motherboard........................................................................................................................ 3–1
Embedded-PC System Enhancements.........................................................................................3–1