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**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91
***Notes:...
***Info:...
***Features:...
**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**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...
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**85C496/497     486-VIP 486 Green PC VESA/ISA/PCI Chipset         <95
***Info:...
***Configurations:...
***Features:...
**85C501/502/503 Pentium/P54C PCI/ISA Chipset                <01/09/95...
**5101/5102/5103 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5120           Pentium PCI/ISA Chipset (Mobile)            <01/28/97...
**5501/5502/5503 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5511/5512/5513 Pentium PCI/ISA                             <06/14/95...
**5571           (Trinity) Pentium PCI/ISA Chipset (75MHz)   <12/09/96...
**5581/5582      (Jessie)  Pentium PCI/ISA Chipset (75MHz)   <04/15/97...
**5591/5592/5595 (David)   Pentium PCI A.G.P. Chipset        <01/09/98...
**5596/5513      (Genesis) Pentium PCI Chipset               <03/26/96...
**5597/5598      (Jedi)    Pentium PCI/ISA Chipset           <04/15/97...
**530/5595       (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**55x            SoC (System-on-chip)                        <03/14/02...
**
**Support chips:
**85C206     Integrated Peripheral Controller [no datasheet]         ?...
**5595       Pentium PCI System I/O                          <12/24/97...
**950        LPC I/O                                         <07/16/99...
**Other:...
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*Unresearched:...
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*Western Digital...
**WD7900/LP/LV  System Chip Set for 80286 or 80386SX (Cache) <11/25/91
***Notes:...
***Info:...
***Configurations:...
***Features:
****WD7910/LP/LV (System Controller):
o   Software compatible with WD76C10A
o   8Kbyte on-chip cache for 80386SX
    - Direct map or 2 way set-associative
    - Self timed Integrated RAM arrays
    - Programmable non-cacheable regions
    - Diagnostic mode to test Tag and Data Ram
    - Flush command
    - 25 Mhz zero wait state cache hit
o   ROM may be shadowed and/or cached
o   Supports Static CPU for power savings in sleep mode
o   Supports extra wait state for page mode
o   Supports VLBI for high-speed video access
o   Operates at speeds of 16 MHz, 20 MHz and 25 MHz.
o   Interfaces with 80286, or 80386SX CPUs.
o   Supports memory in four banks with 64 Kbits, 256 Kbits, 1 Mbits 
    or 4 Mbits DRAMs. Also supports new 512k x 8,1 M x 16 and 
    2M x 8 DRAM configurations.
o   Page mode zero wait state access at 25 MHz with 70 ns DRAM.
o   Supports up to 16 Mbyte of real memory, or 32 Mbyte of EMS memory.
o   Maintains controlled propagation delay for 80386SX reset.
o   Employs an internal self-tuning delay line for DRAM control.
o   Self-adjusting output drivers minimize output rise/fall time 
    variations and reduces EMI and ground noise.
o   DRAM address multiplexer drives 350 pF with adjustable strength 
    drivers.
o   Main and VGA BIOS may be mapped into one physical PROM.
o   Advanced 64 Kbyte and 128 Kbyte ROM shadowing allows main BIOS 
    and video BIOS shadowing along with 320 Kbyte and 256 Kbyte remap 
    to extended or expanded memory.
o   Offers additional power saving modes:
    - Slow Refresh
    - Stop DMA Clock
o   Parity generation and checking.
o   160-pin PQFP package
o   3.3V low power operation
o   I/O Pin mapping for testability
o   Low power 0.9 micron CMOS technology.

Additional features of WD7910LP only:
o   Supports System Management Interrupt (SMI)·
o   Provides I/O trapping
o   Provides System Activity Monitor (SAM).
o   Provides power control with suspend and resume.
o   Provides processor stop clock.
o   Features CAS before RAS slow refresh for portable applications.
o   Offers automatic processor clock speed switching.
o   3V Suspend to hard disk


****Other Chips:...
****General (Assuming complete chipset is used):...
**WD8110        System controller for 80386DX/486            <11/30/93...
**
**Support Chips:
**WD76C20x   Floppy, RTC, IDE and Support Logic Device       <11/25/91...
**WD76C30x   Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91...
**WD7615     Desktop Buffer Manager                          <04/15/92...
**WD7625     Desktop Buffer Manager                          <10/01/92...
**WD8120LV   Super I/O [no datasheet]                                ?
**Other Chips:...
*Winbond...
*ZyMOS...
*General Sources:...