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**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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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**TACT82000 3-Chip 286 [no datasheet] c89
***Notes:
Mentioned in TACT82411 datasheet.
This chip *Might* be part of it.
TACT82206 I/O controller (Possibly compatible with C&T 82206)
**TACT82411 Snake Single-Chip AT Controller c90...
**TACT82S411 Snake+ Single-Chip AT Controller [no datasheet] c91...
**TACT83000 AT 'Tiger' Chip Set (386) c89...
**TACT84500 AT Chip Set (486, EISA) [no datasheet, some info] c91...
**Other:...
*UMC...
**UM82C480 386/486 PC Chip Set c91
***Info:...
***Configurations:...
***Features:
o 100% IBM PC/AT compatible
o Supports 80386 CPU running at 25/33/40 MHz
o Supports 80486 CPU running at 25/33/40/50 MHz in 1x clock
o Supports Intel 80387 / Weitek 3167 / Weitek 4167 Floating Point
Coprocessors
o Built-in cache controller:
- Direct-mapped organization with write-back operation
- 0 wait state for cache hit
- Flexible cache size: 32/64/128/256/512/1024 KB
- Hidden DRAM refresh to boost system performance
- built-in registers to support three independent non-cacheable
regions
- Support cache line fill as well as 80486 burst mode
- Support Automatic Memory Size Detection
o Sophisticated DRAM controller:
- Supports Fast/Standard page mode
- Supports 4 banks CPU speed DRAM with memory size up to 64MB
- Supports mixable 256Kx9, 1Mx9, 4Mx9 DRAM modules
- Programmable DRAM wait states
- Supports 256KB or 384KB (A to F segments of first 1MB)
relocation to the top of DRAM memory
o Supports sophisticated Shadow RAM for video and system BIOS (C, D,
E, F segments)
o Supports first GATE A20 and fasy CPU RESET to optimize OS/2
operations
o Synchronous AT bus clock with programmable clock (divided by 2, 3,
4, 5, 6)
o Programmable CPU clock (divided by 1, 2, 3, 4)
o Support 256KB/512KB/1MB EPROMs with single or double EPROM BIOS
configuration
**UM82C493/491 ??????????????? [no datasheet] ?...
**UM8498/8496 486 VL Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8881/8886 HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94...
**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:...
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*ZyMOS...
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