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**450NX (?) 06/29/98:
Chips:
[82454NX] (PXB) [82453NX] (MUX)
[82452NX] (RCG) [82451NX] (MIOC)
[82371EB] (PIIX4E),
CPUs: Single/Dual/Quad P-II Xeon/P-III Xeon
DRAM Types: FPM EDO 2-way Interleave 4-way Interleave
Mem Rows: 8
DRAM Density: 16Mbit 64Mbit
Max Mem: 8GB
ECC/Parity: Both
AGP speed: N/A
Bus Speed: 100
PCI Clock/Bus: 1/3
**????? (Profusion) c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
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*OPTi...
**82C495XLC PC/AT Chip Set c:93
***Info:...
***Configurations:...
***Features:
o Low cost, low power, CMOS Technology
o Supports 386DX, 486 DX/DX2/SX CPUs as well as Intel
P24T and Cyrix Cx486S/S2 and Cx486DX/DX2 CPUs
o One 160-pin CMOS Plastic Flat Package (PFP), one 84
pin PLCC (or one 100-pin PFP)
o Internal buffers and termination to reduce external parts count
o Copy-Back Direct-Mapped Cache: 32/64/128/256KB for 386, and
64/128/256/512KB for 486
o Up to 10% performance enhancement from write-through cache scheme
o Supports 2-1-1-1 or 3-2-2-2 cache cycles
o On-chip comparator determines cache hit/miss
o Up to 64MB of local high-speed, page mode DRAM memory space
o Burst line fill during cache read-miss
o Control of one non-cacheable region
o Shadow RAM support for system, video and adapter card BIOS
o Optional caching of shadowed video BIOS
o Hidden refresh support to enhance system performance
o Turbo/slow speed selection (386 mode only)
o AT bus clock selectable from CLKI (/6, /5 /4, /3)
o CAS-before-RAS refresh reduces power consumption
o Optional 0 or one wait state for cache write-hit
o 387 coprocessor support for 386 mode
o Internal CD and CA bus pull-up resistors to save components and
board real-estate
o Comprehensive VL bus and OPTi high-performance local bus support
o On-chip hardware provides direct support for up to two
VL bus master devices
**82c496A/B DXBB PC/AT Chipset <Mar92...
**82C496/7 DXBB PC/AT Chipset (Cached) <01/16/92...
**82C498 DXWB PC/AT chipset [no datasheet] ?...
**82C499 DXSC DX System Controller c:93
***Info:...
***Configurations:...
***Features:...
**82C546/547 Python PTM3V c:94...
**82C556/7/8 Viper [no datasheet] ?...
**82C556/7/8N Viper-N Viper Notebook Chipset <05/25/95...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96...
**82C566/7/8 Viper-Max Chipset Scalable MultiMedia PC Solution ?...
**82C571/572 486/Pentium c:93...
**82C576/7/8 Viper Xpress [no datasheet] ?...
**82C576/8/9 Viper XPress+ [no datasheet, some info] <01/16/97...
**82C596/597 PTMAWB Pentium Adaptive Write-back (Cobra) c:93...
**82C650/1/2 Discovery (Pentium Pro) [no datasheet] ?...
**82C681/2/6/7 386/486WB EISA c:92...
**82C683 386/486AWB EISA [no datasheet] ?...
**82C693/6/7 Pentium uP Write Back Cache EISA c:93...
**82C700 FireStar c:97...
**82C701 FireStar Plus c:97...
**82C750 Vendetta [no datasheet] ?...
**82c801 SCWB2 DX Single Chip Solution c:92...
**82C802 SCWB2 PC/AT Single Chip [no datasheet] ?...
**82C802G/GP System/Power Management Controller (cached) c:93...
**82C895 System/Power Management Controller (cached) c:Sep94...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
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*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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