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**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94
***Notes:...
***Info:
The 82498 Cache Controller and multiple 82493 Cache SRAMs combine with
the Pentium processor (735/90, 815/100) and future Pentium Processors
to form a CPU Cache chip set designed for high performance servers and
function-rich desktops. The high-speed interconnect between the CPU
and cache components has been optimized to provide zero-wait state
operation. This CPU Cache chip set is fully compatible with existing
software, and has new data integrity features for mission critical
applications.
The 82498 Cache Controller implements the MESI write-back protocol for
full multiprocessing support. Dual ported buffers and registers allow
the 82498 to concurrently handle CPU bus, memory bus, and internal
cache operation for maximum performance.
The 82493 is a customized high-performance SRAM that supports 64-, and
128-bit wide memory bus widths, 32-, and 64-byte line sizes, and
optional sectoring. The data path between the CPU bus and memory bus
is separated by the 82493, allowing the CPU bus to handshake
synchronously, asynchronously, or with a strobed protocol, and
allowing concurrent CPU bus and memory bus operations.
***Configurations:...
***Features:...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82C546/547 Python PTM3V c:94
***Notes:...
***Info:...
***Configurations:...
***Features:
o 100% PC/AT compatible
o Fully supports the 3.3V/5.0V Pentium processors
o Three chip solution:
- 82C547 System Controller (SYSC) (160-pin PQFP)
- 82C546 AT Bus Controller (ATC) (208-pin PQFP)
- 82C206 Integrated Peripheral Controller (IPC) (84-pin PLLC
or 100-pin PQFP)
o Two buffer/translator support chips:
- 82C606A (100-pin PQFP)
- 82C606B (100-pin PQFP)
o Supports Pentium CPU address pipelining
o 1X clock source, supporting systems running Pentium processor
bus clocks up to 60MHz
o Write-back, direct-mapped cache with size selections:
64KB, 128KB, 256KB, 512KB, 1MB and 2MB
o Programmable cache write policy: write-back or write-through
o Fully programmable cache and DRAM read/write cycles
o Supports 3-2-2-2 cache burst read cycles at 60MHz
o Built-in tag auto-invalidation circuitry
o Support for two programmable non-cacheable memory regions
o Options for cacheable, write-protected, system and video BIOS
o Supports two banks of 64-bit wide DRAMs with 256KB, 512KB, 1MB
2MB, 4MB and 8MBx36 Page Mode
o Supports DRAM configurations up to 128MB
o Supports 3-3-3-3 pipeline DRAM burst cycles
o DRAM post write buffer
o Support for flash ROM
o Shadow RAM option
o Hidden refresh with CAS-before-RAS refresh supported
o High-performance 32-bit local bus support
o Performance-oriented snoop-line comparator for VL/ISA
bus masters
o External DMA page register
o Turbo/slow speed selection
o Asynchronous CPU and VL bus interface
o AT bus clock speed programmability
o Transparent 8042 emulation for Fast CPU Reset and GATEA20
generation
o Supports Ports 92h, Gate A20, and Fast Reset
o Mixed voltage (3.3V and 5.0V), low-power, high speed, 0.8
micron CMOS technology
**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...
**VT82C598MVP Apollo MVP3,Single-Chip 66/75/83/100MHz & AGP <09/22/97
***Notes:...
***Info:...
***Configurations:...
***Features:...
**VT8501 Apollo MVP4,Single-Chip 66-100MHz & AGP <11/04/98...
**VT82C680 Apollo P6, Pentium-Pro Chip Set <08/30/96...
**Support chips:
**VT82C505 Pentium/486 VL to PCI Bridge <05/30/94...
**VT82C586/A/B PCI Integrated Peripheral Controller <10/13/96...
**VT82C596/A Mobile PCI Integrated Peripheral Controller <11/05/97...
**VT82C686A/B PCI Super-I/O Integrated Peripheral Ctrl. <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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