AOpen AP5VM-OV User Manual

Chapter 1

Overview

The AP5VM is a high-performance Pentium-based system board that utilizes
the PCI/ISA architecture. It integrates the Intel 82430VX PCIset, a super I/O
controller, and a PCI mode 4 enhanced IDE controller with bus master
support to enhance system performance. It has four single in-line memory
module (SIMM) sockets and one Dual in-line memory module (DIMM) that
allow system memory expansion up to a maximum of 128MB. It also supports
256KB and 512KB pipelined-burst second-level cache onboard.

One main feature of AP5VM is the green power-management function that
extends energy conservation from system components to display monitor. It
complies with the power-saving standards of the U.S. Environmental
Protection Agency (EPA) Energy Star program.

The AP5VM board measures 220 mm x 280 mm.

1-1

Overview

1.1 Specifications

Form Factor
Board Size
CPU

System Memory

Second-level Cache
Chipset
Expansion Slots
Serial Port
Parallel Port

Floppy Interface

IDE Interface

USB Interface

PS/2 Mouse
Keyboard

BIOS
RTC

Baby AT
220 mm x 280 mm
Intel Pentium Processor P54C, PP/MT (P55C), AMD

K5/K6, Cyrix 6x86/6x86MX and IDT C6.
FPM (Fast Page Mode) or EDO (Extended Data

Output) 72-pin SIMM x4, and SDRAM 168-pin x1
maximum 128MB.

256KB or 512KB pipelined-burst cache onboard
Intel 82430VX PCIset
ISA x3 and PCI x4
Two serial ports UART 16C550 compatible
One parallel port supports standard parallel port

(SPP), enhanced parallel port (EPP) or extended
capabilities port (ECP).

Floppy interface supports 3.5 inches drives with
720KB, 1.44MB or 2.88MB format or 5.25 inches
drives with 360KB, 1.2MB format

Dual-channel IDE interface support maximum 4 IDE
hard disks or CDROM, mode 4 and bus master hard
disk drives are also supported.

Two USB ports supported by USB bracket, the BIOS
also supports USB driver to simulate legacy
keyboard.

PS/2 mouse supported by PS/2 mouse bracket.
Default AT compatible keyboard, mini-DIN PS/2

keyboard connector is optional.
AMI Plug-and-Play Flash ROM BIOS
Dallas DS12887A and DS12B887 compatible

1-2