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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:
82498 +  8x 82493 (1Mbyte)
82498 + 16x 82493 (2Mbyte)

See page 598 of the second source for further details.

***Features:...
**
**Later chipsets (basic spec):
**440 series:...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
*Headland/G2...
**HT21          386SX/286 Single Chip (20 MHz)                 c:Aug91
***Info:...
***Configurations:...
***Features:
o   Single Chip 80386SX/286 PC/AT Compatible Solution for CPU Clock 
    Speeds to 20MHz
o   SX Mode or 286 Mode
o   Supports up to 8 MB DRAM using 1M or 256K Devices in by 1 or 4 
    configuration
o   Page Mode and 2 or 4-Way Interleaving
o   LIM EMS 4.0 Support in Hardware using 2 Sets of 32 EMS Registers
o   8-Bit or 16-Bit BIOS Support
o   Asynchronous AT Bus Clock
o   Supports up to 12 MHz Backplane Operation
o   Programmable DRAM Timing
o   Port 92 Alternate GATEA20 and Hot Reset
o   Shadow RAM support over entire C0000-DFFFF range in 16K 
    increments
o   BIOS Shadow support in 64K increments
o   Built-in Sleep Mode
o   Three-state control pins for board level testing
o   HCMOS Technology

**HT22          386SX/286 Single Chip (25 MHz)                 c:Sep91...
**HT25          3-volt Core Logic for 386SX                    c:Dec92...
**HT35          Single-Chip Peripheral Controller [partial info]     ?...
**HTK320        386DX Chip Set                                 c:Sep91...
**HTK340        "Shasta" 486 Chip Set                          c:Jun92...
**Support Chips:
**HT44          Secondary Cache                                c:Jun92...
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