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PCA-6275 User's Manual
1.1 Introduction
The PCA-6275 industrial grade CPU card uses two of Intel's highly
acclaimed Pentium
®
II processors, together with the Intel 440BX PCI
chipset. The card works with standard ISA or PCI/ISA-bus passive
backplanes.
The CPU provides 512 KB on-chip L2 cache, eliminating the need for
external SRAM chips. It has two PCI EIDE interfaces (for up to four
devices), and an FDD interface (for up to two devices). Other features
include two RS-232 serial ports (16C550 UARTs with 16-byte FIFO
or compatible), one enhanced parallel port (supports EPP/ECP), and
support for two USB (Universal Serial Bus) ports. The PCI Bus
Master IDE controller supports Ultra DMA/33 operation. This
provides data transfer rates of over 33 MB/sec. System BIOS supports
boot-up from an IDE CD-ROM, SCSI CD-ROM and LS-120.
A backup of CMOS data is stored in the Flash memory, which
protects data even after a battery failure. Also included is a 63-level
watchdog timer, which resets the CPU or generates an interrupt if a
program cannot be executed normally. This enables reliable operation
in unattended environments.