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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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**UM8881/8886  HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94
***Notes:
full name "UMC Super Energy Star Green File...UM8881F/8886F, 
           Apr. 15, 1994"
Name source: https://patentimages.storage.googleapis.com/pdfs/US5802555.pdf

No datasheet found.
The following information *may* be correct:
PCI 486, c1995 
EDO supported. max 64MB cacheable ram, 
60/66MHz bus option with divide by 2 for PCI

***Configurations:...
**UM8890       Pentium chipset [no datasheet]                        ?...
**
**Support Chips:
**UM82152      Cache Controller (AUStek A38152 clone)              <91...
**UM82C852     Multi I/O For XT                                    <91...
**UM82C206     Integrated Peripheral Controller                    <91...
**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
*Unresearched:...
*VIA...
*VLSI...
**Other:
***VLX*XXX...
***VL16XXX
VL16C450  UART equivalent to VL82C50A but with, scratchpad register, and various improvements
VL16C451  UART equivalent to VL16C450 with Bidirectional Parallel port 
VL16C451B 'Enhanced' UART equivalent to VL16C450 with Bidirectional Parallel port 
VL16C452  2x UART otherwise equivalent to VL16C451
VL16C452B 'Enhanced'2x UART otherwise equivalent to VL16C451
VL16C550 UART same as VL16C450 but with 16 byte FIFO 
VL16C551 UART same as VL16C450 but with 16 byte FIFO (not NSC-compatible?)
VL16C552 UART same as VL16C452 but with 16 byte FIFO
VL16C554 UART same as VL16C552 but Quad
***VL65XXX...
***VL80XXX...
***VL82XXX...
***VL85XXX...
***VL86XXX...
***VXXXXXX...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...