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**82497/492   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:...
***Info:
The 82497 Cache Controller and multiple 82492 Cache SRAMs combine with
the Pentium processor  (735\90, 810\100) 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 82497 cache controller implements the MESI write-back protocol for
full multiprocessing support. Dual  ported buffers and registers allow
the 82497  to concurrently  handle CPU bus,  memory bus,  and internal
cache operation for maximum performance.

The  82492 is a  customized high-performance  SRAM that  supports 32-,
64-, 128-bit wide memory bus widths, 16-, 32-, and 64-byte line sizes,
and optional sectoring.  The data path between the  CPU bus and memory
bus  is separated  by the  82492, allowing  the CPU  bus  to handshake
synchronously,  asynchronously,  or   with  a  strobed  protocol,  and
allowing concurrent CPU bus and memory bus operations.

***Configurations:...
***Features:...
**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...
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*Unresearched:...
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*VLSI...
**VL82C323         SCAMP II, 5 Volt Power Management Unit (PMU)      ?
***Info:...
***Versions:...
***Features:
o   Supports X86-based PC/AT-compatible systems
o   Provides system activity monitoring, peripheral control, power
    supply control, mode timers, and general purpose I/O for laptop/
    notebook power management 
o   Includes the logic to support X86 processors with the System
    Management Mode (SMM) feature
o   Five operation modes:
    - On Mode
    - Doze Mode
    - Sleep Mode
    - Suspend Mode
    - Off Mode
o   Independent programmable timers for power saving modes
o   Independent programmable timers for LCD and backlight control
o   Ten individual power control outputs:
    - Three for LCD power
    - Seven general purpose for peripherals
o   Two to four low battery warning monitors
o   Multiple power on sources from Suspend/Off Mode:
    - Push-Button
    - Real-time clock alarm
    - Modem ring
o   AC power monitoring to disable PMU function
o   Suspend Mode refresh options:
    none, CAS-before-RAS, Self-Refresh
o   Leakage control of outputs during Suspend Mode
o   Wide range of LCD panel power-up/-down sequencing
o   Ten general purpose I/O ports; eight with additional  I/O
    features:
    - One programmable blinking I/O
    - Two optional low battery inputs
o   Watchdog timer to turn-off system power if low battery NMI
    is not serviced
o   Programmable interrupt generation on:
    - PMU power mode
    - Low battery warning
    - External input
    - LCD panel timer
    - Reschedule Suspend Mode Interrupt by BIOS
    - Activity detection
o   Generated interrupt selectable as IROx, NMI, or SMI
o   Controls SCAMP I or SCAMP II (VL82C310 or VL82C316) 
    -SLEEP pin
o   Real-time clock alarm IRQ output pin for SCAMP 1 Controller
o   1.5-micron CMOS Technology
o   100-lead (thin) metric quad flat pack (MQFP) 


**VL82C380         Single chip 386DX PC/AT Controller +on-chip cache ?...
**VL82C325             VL82C386SX System Cache controller            ?...
**VL82C335             VL82C386DX System Cache ctrl. [no d.sheet]    ?...
**VL82C315A/322A/3216  Kodiak 32-Bit Low-Voltage Chip Set            ?...
**VL82C420/144/146     SCAMP IV [no datasheet, some info]          c93...
**VL82C480         System/Cache/ISA bus Controller                   ?...
**VL82C481         System/Cache/ISA bus Controller                 c92...
**VL82C486         Single-Chip 486, SC486, Controller                ?...
**VL82C425         486 Cache controller                              ?...
**????????         Cheetah 486, PCI [no datasheet]                   ?...
**VL82C3216        Bus Expanding Controller Cache with write buffer  ?...
**VL82C521/522     Lynx/M                                            ?...
**VL82C530         Eagle Ð                                         c95...
**VL82C541/543     Lynx                                            c95...
**VL82C591/593     SuperCore 590                                   c94...
**VL82C594/596/597 Wildcat                                         c95...
**I/O Chips:
**VL82C106 Combination I/O chip                                      ?...
**VL82C107 SCAMP  Combination I/O chip                               ?...
**VL82C108 TOPCAT Combination I/O chip                               ?...
**VL82C110 Combination I/O chip                                      ?...
**VL82C113 SCAMP  Combination I/O chip                               ?...
**VL82C114 Combination I/O chip                                      ?...
**Video: ...
**Disk:...
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**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...