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**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:...
***Info:
The 82496 Cache Controller and multiple 82491 Cache SRAMs combine with
the Pentium processor to form a CPU Cache chip set designed for high
performance servers and function-rich desktops. The high speed
interconnect between the CPU and cache components has been optimized
to provide zero-wait state operation. This CPU Cache chip set is
fully compatible with existing software, and has new data integrity
features for mission critical applications.
The 82496 cache controller implements the MESI write-back protocol for
full multiprocessing support. Dual ported buffers and registers allow
the 82496 to concurrently handle CPU bus, memory bus, and internal
cache operation for maximum performance.
The 82491. is a customized high-performance SRAM that supports 32, 64,
and 128-bit wide memory bus widths, 16, 32, and 64 byte line sizes,
and optional sectoring. The data path between the CPU bus and memory
bus is separated by the 82491, allowing the CPU bus to handshake
synchronously, asynchronously, or with a strobed protocol, and
allowing concurrent CPU bus and memory bus operations.
***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...
**800 series...
*Headland/G2...
**GCK113 80386 AT Compatible Chip Set c:oct89
***Info:...
***Configurations:...
***Features:...
**GCK181 Universal PS/2 Chip Set c:Mar89...
**HT11 Single 286 AT Chip [no datasheet] <Aug90...
**HT12/+/A Single 286 AT Chip with EMS support c:Aug90...
**HT18 80386SX Single Chip c:Sep91...
**HT21 386SX/286 Single Chip (20 MHz) c:Aug91...
**HT22 386SX/286 Single Chip (25 MHz) c:Sep91...
**HT25 3-volt Core Logic for 386SX c:Dec92...
**HT35 Single-Chip Peripheral Controller [partial info] ?...
**HTK320 386DX Chip Set c:Sep91...
**HTK340 "Shasta" 486 Chip Set c:Jun92...
**Support Chips:
**HT44 Secondary Cache c:Jun92...
**Other:...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
**VL82C*** IBM/INTEL Direct replacement ?
PC/XT:
IBM: VLSI: Desc:
Intel 8284 VL82C84A 8-10MHz 8086 and 8088 Clock Generator and Driver
Intel 8288 VL82C88 8-10MHz 8086 and 8088 Bus Controller
Intel 8259 VL82C59A 8-10MHz CMOS Programmable Interrupt Controller
Intel 8237 VL82C37A 5-8MHz CMOS Direct Memory Access (DMA) Controller
Intel 8253 VL82C54A* 8-10MHz CMOS Programmable Interval Timer
Intel 8255 ?? (Keyboard Controller)
Note: * indicates: The VL82C54A datasheet says it works with the 8086/
8088, not sure if that means, the CPU or as IBM PC/XT compat-
ible. YMMV.
AT:
IBM: VLSI: Desc:
Intel 82284 VL82C284* 8-10MHz '286 Clock Generator and Driver (CMOS)
Intel 82288 VL82C288* 6-8MHz '286 Bus Controller (CMOS)
Intel 8254 VL82C54A* 8-10MHz CMOS Programmable Interval Timer
Intel 8259 VL82C59A 8-10MHz CMOS Programmable Interrupt Controller
Intel 8237 VL82C37A 5-8MHz CMOS Direct Memory Access (DMA) Controller
74LS612 VL82C612 DMA address register (implemented with a 74LS612 IC)
MC146818 RTC VL82C018* RTC with ram
Intel 8047 ?? Keyboard Controller
Note: * indicates: possible compatibility, datasheet does not state
explicitly. YMMV.
**VL82CPCAT-QC AT 12 MHz 0/1 ws c88...
**VL82CPCPM-QC AT 16 MHz 0/1 ws [no datasheet] c88...
**VL82CPCAT-16QC/-20QC AT 16 MHz or 20 MHz, 0/1 ws +386SX c89...
**VL82CPCPM-16QC/-20QC AT 16 MHz or 20 MHz, Page-Mode +386SX c89...
**VL82C031/032/033 PS/2 Model 30-compatible chip set c88...
**VL82C286-SET TOPCAT 286/386SX PC/AT-Compatible Chip Set ?...
**VL82C386-SET TOPCAT 386DX PC/AT-Compatible Chip Set ?...
**VL82C386sx-SET TOPCAT 286/386SX PC/AT-Compatible Chip Set ?...
**VL82C310 SCAMP-LT ?...
**VL82C311 SCAMP-DT ?...
**VL82C311L SCAMP-DT 286 ?...
**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 ?
***Info:...
***Versions:...
***Features:...
**???????? 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: ...
**Disk:...
**Modems:...
**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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