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**ET6000     "Cheetah" 486DX/SX Non-Cache System                <Apr92
***Info:...
***Configurations:...
***Features:...
**ET9000     "Jaguar" 486 Write Back Cache AT Single Chip       <Jun92...
**ET9800/391 "Firefox" 386SX Write Back chipset [no datasheet]       ?...
**82C390SX   "Panda" S.C. 386SX Direct Mapped Cache [no d.sheet]cFeb92...
**66x8       VIA clones [no datasheet]                               ?...
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**82485       Turbo Cache (and 485Turbocache)                      c90
***Notes:...
***Info:...
***Versions:...
***Features:...
**82489DX       Advanced Programmable Interrupt Controller    10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91...
**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...
**800 series...
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**UM8890       Pentium chipset [no datasheet]                        ?
***Notes:...
***Configurations:...
**
**Support Chips:
**UM82152      Cache Controller (AUStek A38152 clone)              <91...
**UM82C852     Multi I/O For XT                                    <91...
**UM82C206     Integrated Peripheral Controller                    <91
***Info:...
***Versions:...
***Features:
o   Fully compatible with PC/AT architecture
o   Fully compatible with 8237 DMA controller, 8259 Interrupt 
    controller, 8254 Timer/Counter, and 146818 Real Time Clock
o   Provides 7 DMA channels, 13 Interrupt request channels, 2 Timer/
    Counter channels, and a Real Time Clock
o   Built in 74LS612 memory mapper for DMA page address
o   Provides 114 bytes of CMOS RAM memory
o   8 MHz DMA clock with programmable internal divider for 4 MHz 
    operation
o   16M bytes DMA address space
o   Programmable wait states for the DMA cycle
o   Reduced recovery time (120 ns) between I/O operations 



**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
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