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**82395SX Smart Cache 12/17/90
***Notes:...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**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...
**82C499 DXSC DX System Controller c:93
***Info:
The OPTi 82C499 provides a highly integrated solution for fully
compatible, high-performance PC/AT platforms. This chip will support
the Intel 486SX/DX/DX2/487SX, Intel 386DX and IBM/Cyrix 486DLC
microprocessors in the most cost effective and power efficient designs
available today. Since the device is so critical to the performance
and cost structure of a PC, this highly integrated approach provides
the foundation for a very cost effective platform without compromising
performance. For power users, this chip offers optimum performance
for systems running up to 50MHz. The OPTi DXSC chip provides a
solution positioned to deliver value, without neglecting quality,
compatibility, or reliability.
The 82C499 integrates a write-back cache controller, a local DRAM
controller, an integrated peripherals controller (82C206), the CPU
state machine, the AT bus state machine, and data buffers all in a
single 208-pin PFP. New on-chip hardware provides the hooks for OPTi
and VESA local bus device support.
***Configurations:...
***Features:
o Supports Intel 486 SX/DX/DX2, 487SX, and Intel 386DX/Cyrix
486DLC/IBM 486DLC microprocessors
o Single-chip PC/AT solution: one 208-pin Plastic Flat Package (PFP)
o 1X and 2X clock source, supporting systems running from 16MHz
to 50MHz
o Write-back direct mapped, bank interleave cache with size
selections: 64KB, 128KB, 256KB, and 512KB
o Supports 2-1-1-1, 3-1-1-1, 2-2-2-2, and 3-2-2-2 cache burst cycles
o Support for two programmable non-cacheable regions
o Built-in tag auto-invalidation circuitry
o Option for write-protected, cacheable video and system BIOS
o Programmable cache and DRAM read/write cycles
o Supports four banks of 256KB, 1MB, and 4MB
o DRAMs for configurations up to 64MB
o Shadow RAM option
o Flash ROM support
o Hidden refresh and slow refresh supported using
the CAS-before-RAS refresh method
o Comprehensive VESA VL and OPTi high-performance local bus support
o Turbo/slow speed selection
o Synchronous AT bus clock with programmable clock division options:
o CLKI(/6, /5 /4, /3), or CLK2I(/6, /5, /4, /3)
o Zero or one wait state options for 16-bit AT bus cycles
o Transparent 8042 emulation for fast CPU reset and GATEA20
generation
o Supports the 80387 numeric coprocessor
o Low-power, high-speed 0.8-micron CMOS technology
o Integrated peripherals controller
**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...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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