Chapter
1
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MODULE DESCRIPTION
1.1
PRODUCT OVERVIEW
The XVME-675 is a VMEbus PC/AT processor module designed to combine the high performance and
ruggedpackaging ofthe VMEbuswiththe broad applicationsoftwarebase of the IBM PC/AT standard. This
6U double-high module requires a single VMEbus slot, is PC/AT compatible, and supports all standard
PC/AT software.XVME-675 incorporatesthe 100
MHz
80486DX4processor. The board is available with
two
memory options: 16or 32 Mbytes of dual-accessDRAM.
TheXVME-675 containsa VMEbus and PC/AT-businterface,a floppy disk interface, a high-performance
IDE hard disk controller, and a SuperVGA graphicscontrollerwith
1
Mbyte of Video RAM. The module
provides
two
serial ports, one parallel port, PS/2-compatiblekeyboard and mouse ports, and a watchdog
timer.
The module featurescomplete32-bitVMEbusmastedslave interfaces,which allows users to communicate
easily with the VMEbus short I/O, standard, and extended address spaces. This module also contains
VMEbus slot 1functions, as well as a completeVMEbus interrupterand interrupt handler.
1.2
XVME-675
FEATURES
The XVME-675 PC/AT Processor Modulehas the followingfeatures:
100
MHz
80486DX4microprocessor
16or 32 Mbytes of dual-accessDRAM
ShadowRAM option for systemBIOS and the VGA BIOS
Zero wait-state DRAM controllerwith intelligentwrite buffer
Floppy disk controller: 360 Kbytes, 720 Kbytes, 1.2Mbytes, and 1.44Mbytes
SuperVGA controller
BitBLT engine
1024~768,256colors
64
x
64 hardware cursor
1Mbyte video
RAM
IDE hard drive controller (ATDrive)
Two RS-232C-compatibleserialports
One Centronics-compatibleparallel port
PS/2-compatiblekeyboard and mouse ports
PC/104 expansion site
VMEbus A32/A24/A16:D32/D16/D08(EO)DTB Master
VMEbus A32/A24:D32/Dl6/DOS(EO)DTB Slave
Programmable byte-swappinghardware for VMEbus master and slave
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