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**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:
Date source: TimelineDateSort7_05.pdf

Information taken from: 
            1995_Intel_Pentium_Processors_and_Related_Components.pdf*
                                         8249x Cache controllers.pdf**

>*  Datasheet dated Oct'93
>** 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.

This  chip was  used on  the Pentium  66MHz CPU  complexes of  Intel's
Xpress platform.   Specifically the  BXCPUPENT66 (Single  66MHz, eight
82491s) and BXCPU2XPENT (Dual 66 MHz,  eight 82491s). Also found on P5
60/66MHz CPU complexes of IBM 9595/PC Server 300/500 systems.

***Info:...
***Configurations:...
***Features:...
**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
Chips:         
Memory Access Controller (MAC)  
Data Interface Buffer (DIB)
CPUs:          8x P-III Xeon Oct
DRAM Types:    SDRAM PC100 2-way Interleave dual channel
Max Mem:       32GB
ECC/Parity:    ECC
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3 PCI-66/64



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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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*UMC...
**Other chips:
***Video:...
***Disk:...
***Peripheral:...
***Other:
UM3750A         Programmable 12-bit Encoder/Decoder
UM6502/07/12    8-bit Microprocessor 1,2,3,4 MHz Versions
UM6502E         8-bit Microprocessor 1,2,3,4 MHz Versions
UM8048/35/49/39 Microcontroller
UM8051/31       Microcontroller
UM74HCT590      8 bit Binary Counter with Output Registers
UM74HCT646      Octal Bus Transceiver and Register

UM2332/UM2333/UM2364  Mask ROM 
UM2366/A              Mask ROM
UM23128/A             Mask ROM
UM23256/A             Mask ROM
UM2147/UM2148/UM2149  SRAM
UM6104/UM6104-1       SRAM
UM6114/UM6116-2/-3/-4 SRAM
UM6116-5/UM6164       SRAM
UM6167/UM6168         SRAM

UM9001/UM9003AF Network?
UM9007F/UM9008  Network?
UM9009          Network?
UM9017F/UM9018  Ethernet
UM9026          Fast Ethernet
UM9090          Network?


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