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**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94
***Notes:
Date source: 1995_Intel_Pentium_Processors_and_Related_Components.pdf
Information taken from:
1995_Intel_Pentium_Processors_and_Related_Components.pdf*
8249x Cache controllers.pdf**
>* Datasheet dated Nov'94
>** Datasheet undated, whole document dated '95
The info and features section have been solely sourced from the first
source. The second source provides far more detail. Additional
information in the configurations section has been sourced from the
second.
Difference to 82497/492 is this supports 1 Mbyte to 2 Mbyte cache.
***Info:...
***Configurations:...
***Features:...
**
**Later chipsets (basic spec):
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**82C596/597 PTMAWB Pentium Adaptive Write-back (Cobra) c:93
***Notes::...
***Info:...
***Configurations:...
***Features:
o 100% PC/AT compatible
o Fully supports the Intel Pentium microprocessor
o Three chip PC/AT solution: 82C596, 82C597 and 82C206
o Supports Intel Pentium CPU address pipelining
o IX clock source, supporting systems running up to 66 MHz
o Adaptive Write Back, direct-mapped cache with size
selections: 64K, 128K, 256K, 512K, 1Mb, 2Mb
o Programmable cache write policy: adaptive write back (AWB),
write-back or write through
o Fully programmable cache and DRAM read/write cycles
o Supports 3-2-2-2 cache burst read cycle at 66 MHz
o Built-in TAG auto-invalidation circuitry
o Support for two programmable non-cacheable/system memory "hole"
regions
o Supports two banks of 64-bit wide DRAMs with 256K,
512K, 1 M, 2M, 4M, and 8M x 36 page-mode DRAMs
o Supports DRAM configurations up to 128 Mb
o Supports 3-3-3-3 pipeline DRAM burst cycles
o DRAM post write buffer
o Provides Flash ROM support
o 33 MHz asynchronous 32-bit VESA VL Local Bus support
o Performance oriented snoop-line comparator for VL/ISA bus masters
o Extended DMA page register
o Asynchronous CPU and VL bus interface
o AT bus clock speed programmability
o Low power, high speed CMOS technology
**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...
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