Advantech PPC-100 Manual page 29

3.1 Introduction
The PCM-4865 is a highly reliable single board computer based on the
SX-DX4 and 5x86 CPU. It offers built-in functionality comparable to a
complete industrial PC system, including a VGA/LCD controller,
network communications, solid state disk and four serial ports (three RS-
232 and one RS-232/422/485) in a small 8" x 5.75" form factor.
On-board features include DRAM SIMM socket, one EPP/ECP parallel
port, an enhanced IDE HDD controller (for up to two drives), a FDD
controller, a PS/2 keyboard/ mouse interface plus 4-channel digital I/O
ports. In addition, the PCM-4865 also offers several industrial features.
An on-board solid state disk (SSD) emulates a floppy drive using
EPROM or Flash memory device while maintaining complete DOS
compatibility. It also offers faster data access and longer MTBF than
mechanical disk drives and is an ideal solution for critical commercial or
industrial applications. The watchdog timer ensures the system will be
reset if it stops due to a program bug or EMI problem.
24 PPC-100 User's Manual