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**ET6000 "Cheetah" 486DX/SX Non-Cache System <Apr92
***Info:
The CHEETAH single chip provides high integration and a low cost
solution for a 16, 20, 25, 33, and 50MHz 486/AT based system
design. The CHEETAH combined with 82C206 or compatible peripheral
controller offers a 100% PC/AT compatible system using less than 10
components plus memory devices. The CHEETAH is available in the
160-pin Plastic Quad Flat-pack package. The 1.0u high speed, low power
CMOS Technology allows for substantial stability when running at 25,
33, and 50MHz.
The CHEETAH includes 486 CPU control, AT Bus Control, Page Mode DRAM
Control, Asynchronous AT Bus Clock Generation, data bus conversion
logic which performs the conversion necessary between the 8 and 16-bit
data paths, and Coprocessor Interface Logic to support Intel 487SX and
Weitek 4167.
The Cheetah ET6000 is a highly integrated single chip AT optimized
specifically for486 CPUs. The emphasis of this chip is to reduce the
cost requirements of 486 applications, without compromising
performance. Fast bursting can be achieved with 80ns DRAMs.
The system cost is also minimized by allowing the use of slow
DRAMs. The Burst Mode DRAM control is implemented to enhance system
performance.
The Cheetah is designed to be 100% compatible with the IBM PC/AT. With
its optimized Burst and DRAM design, enhanced features like Shadow RAM
BIOS, and Concurrent Refresh; a high performance/low cost 486/AT can
be implemented.
***Configurations:...
***Features:...
**ET9000 "Jaguar" 486 Write Back Cache AT Single Chip <Jun92...
**ET9800/391 "Firefox" 386SX Write Back chipset [no datasheet] ?...
**82C390SX "Panda" S.C. 386SX Direct Mapped Cache [no d.sheet]cFeb92...
**66x8 VIA clones [no datasheet] ?...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91...
**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82C556/7/8 Viper [no datasheet] ?
***Configurations:...
**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
***Info:...
***Configurations:...
***Features:...
**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...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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