Introduction; Product Features - Xycom XVME-678 Manual

Chapter 1 -
INTRODUCTION
1.1 PRODUCT FEATURES
The XVME-678/688 VMEbus PCI A T processor modules are designed to combine the high-performance
and ruggedized packaging of the VMEbus with the broad application software base of the IBM PCI AT
standard. These 6U, double-high modules require a single VMEbus slot, are fully AT -compatible, and
support all standard PCI AT software.
The XVME-688 features a low-power CMOS design with an 80386SX processor running at 25 MHz. The
XVME-678 features a Cyrix 486SLC/e running at 25 MHz. The 486SLC/e provides an internal 1 Kbyte
cache, a 486SX-compatible instruction set, and a 80386SX pin out.
Both modules offer the following features:
• 25 MHz 80386SX microprocessor (XVME-688) or 25 MHz 486SLC/e (XVME-678)
• 0, 1, or 4 Mbytes of DRAM
-SIMM sockets for memory expansion up to 16 Mbytes DRAM
-Zero wait state page interleaved DRAM accesses with 60 nsec DRAMs
• Shadow RAM option for System and VGA BIOS
• Super VGA graphics controller with 512 Kbytes of DRAM
• Floppy disk controller
• High-performance IDE hard disk controller
• A socket for an 80387SX math co-processor
• VMEbus master interface
• VMEbus interrupt handler
• Programmable interrupt enable
• Programmable bus request and bus grant levels
• VMEbus slot 1 functions
• Real mode window, allowing VMEbus Short I/O and Standard address space locations to be
accessed while processor is in real mode
• Two RS-232C serial communication ports
• Centronics-compatible parallel port
• PS/2-compatible keyboard port
• PS/2 AUX port for PS/2-compatible mouse or trackball
• VMEbus SYSFAIL switch
1-1