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**82395SX Smart Cache 12/17/90
***Notes:...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91
***Notes:
date source: none direct, however:
InfoWorld Jan 20, 1992 p98 - Compaq Deskpro 486/50L
mentions it has this chip
Network World Sep 2, 1991 p20 - Advert for new Compaq Deskpro 486/50L
mentions 256K cache
so assumed to be sometime before sept 1991.
Information taken from: 82495DX.pdf (Oct '92)
***Info:...
***Configurations:...
***Features:
o 50 MHz Intel486 DX CPU
- RISC Integer Core with Frequent Instructions Executing in One
Clock
- 160 Mbyte/Sec Burst Bus
- 41 Dhrystone MIPs
- 11.5M Double Precision Whetstones/Sec.
- On-Chip Cache and FPU
o Highly Flexible
- Supports 128 Kbyte and 256 Kbyte Configurations
- Complete MESI Protocol Support
- 32- or 64-Bit Memory Bus Width
- Synchronous, Asynchronous, and Strobed Memory Bus Protocols
- Variable Cache Line Sizes and Sectoring
- Cache Data Parity Option
o High Performance Second Level Cache
- Two-Way Set Associative
- Write-Back or Write Through Cache
- Zero Wait State Cache Access
- Concurrent CPU Bus, Memory Bus, and Internal Array Operation
o Full Multiprocessing Support
- Implements MESI Write-Back Cache Protocol
- Low Bus Utilization
- Automatically Maintains 1st Level Cache Consistency
- Supports Read-for-Ownership, Write-Allocation, and Cache-to-
Cache Transfers
**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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*Unresearched:...
*VIA...
*VLSI...
**VL82C311L SCAMP-DT 286 ?
***Info:...
***Configurations:...
**VL82C312 SCAMP Power Management Unit (PMU) ?...
**VL82C315A SCAMP II, Low-Power Notebook Chipset ?...
**VL82C322A SCAMP II, Power Management Unit (PMU) ?...
**VL82C316 SCAMP II, PC/AT-Compatible System Controller ?...
**VL82C323 SCAMP II, 5 Volt Power Management Unit (PMU) ?...
**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: ...
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**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
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