.,.._.._.._.._.._.._.._..-..._.._.._.._....~..~.._..._..~....~..-..-..-..~..~.,~..~...-..-..-.. - . . .-- INTRODUCTION _______-______-__--______________-_-______”-_-”-_-_-______--”------------- ___-____-_“__-_---__-____-_-___------~ SYSTEM GUIDE The 4386-VC-HD Cache System Motherboard - support either 486 or 386 system The 4386-VC-HD Cache System board is a high performance system board, utilizing the VIA Technology Inc.‘s VT82C480 80486 PC/AT chipset, that offers outstanding features and performance for building advanced personal computers or workstations.
SYSTEM BLOCK DIAGRAM C P U A D D R E S S ISA BUS SYSTEM ADDRESS BUS (SA) PERIPHERAL SYSTEM DATA BUS ADDRESS B U S (XD) (SA) ________________________________________~___~________~____~~____________~__ ~----...
INSTALLATION _____..._^_I______- _______________I_______________________I~~~~~~~_~~~~~~~~~~ JUMPER DESCRIPTION Function Open Close Jumper > Reset RTC reset Normal (ifusing DS1287A) (default) Display type Mono/EGA/ Color VGA (default) Turbo Normal CPU speed (Turbo switch) Normal Reset Hardware reset (Reset) Coprocessor clock Sync. mode Async. mode 2-3 shorted l-2 shorted (default)
MEMORY SYSTEM _____l______l_l_____~~~~~~~~~~~ ________1___1______1l___________l_____^_~~~~ CACHE RAM & CONFIGURING CACHE SIZE The 43%VC-HD Cache System board uses four jumpers to configure the cache size. 128K 256K ’ ALTER RAM 8Kx8 8Kx8 32Kx8 8Kx8 8KX8 TAG RAM 32Kx8 DATA RAM 8Kx8 32Kx8 32Kx8 l-2 shorted l-2 shorted 2-3 shorted...
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64Kbytes Direct Mapped Cache ---------------------------~--- The 64Kbytes Direct Mapped Cache option is achieved by installing eight 8Kx8 SRAM (DATA RAM) in Ml, M2, M3, M4, M6, M7, M8, M9. Install one 8Kx8 SRAM (TAG RAM 28 pin) in M5. 128Kbytes Direct Mapped Cache ---------------------~-~-------- The 128Kbytes Direct Mapped Cache option is achieved by installing four 32Kx8 SRAM (DATA RAM) in Ml, M2, M3, M4.
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CACHE RAM & CONFIGURING CACHE SIZE The 4386-VC-HD Cache System board uses four jumpers to configure the cache size. 128K ALTER RAM 8Kx8 8K2& 32Kx8 TAG RAM 8Kx8 8Kx8 32Kx8 DATA RAM 8Kx8 32Kx8 32Kx8 l-2 shorted l-2 shorted 1 2-3 shorted l-2 shorted 2-3 shorted 2-3 shorted...
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256Kbytes Direct Mapped Cache ----------__--__-_---~---------- The 256Kbytes Direct Mapped Cache option is achieved by installing eight 32Kx8 SRAM (DATA RAM) in Ml, M2, M3, M4, M6, M7, M8, M9. Install one 32Kx8 SRAM (TAG RAM 28 pin) in M5. *MI 0 is A RAM, lter it is optional.
I_I__~~~~_y_y_y.I~~~“~~~~~~~~~~~~~~~~~~~~~”~”~~~~~~~~~~~~~~~~~~~~- “~~~I~_~y_“~y_I~_~~~~~~~“~~~~~~~~~~~~~~~~~~~~~ AWARD BIOS SETUP . . l . . m . . _ . . _ . . l . . l . . m ..- ..I . . _ . . _ . . _ . . _ ..I.. _ . . I . . _ . . _ . . _ . . _ . . _ .._ . . _ .._ . . _ . . w .._ . . _ . . _ . . _ . . _ ..I..I . . I . . I . . m . . I . . m . . _ . . _ . . _ . . _ . . _ . . I . . I _ SETUP SYSTEM CONFIGURATION A setup program has been built into the system BIOS so the configurations stored in the CMOS RAM can be changed.
STATUS PAGE SETUP The setup program is completely menu-driven. Use the arrow keys to select an entry; “+ /-‘I keys to change an entry; and “F 10” key to exit. Help messages are displayed in the window on the screen. If this option is chosen then the screen above is displayed.
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