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**82495DX/490DX DX CPU-Cache Chip Set <Sep91
***Notes:...
***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...
*Headland/G2...
*HMC (Hulon Microelectronics)...
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*OPTi...
**82C556/7/8 Viper [no datasheet] ?
***Configurations:...
**82C556/7/8N Viper-N Viper Notebook Chipset <05/25/95...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96...
**82C566/7/8 Viper-Max Chipset Scalable MultiMedia PC Solution ?...
**82C571/572 486/Pentium c:93...
**82C576/7/8 Viper Xpress [no datasheet] ?...
**82C576/8/9 Viper XPress+ [no datasheet, some info] <01/16/97...
**82C596/597 PTMAWB Pentium Adaptive Write-back (Cobra) c:93...
**82C650/1/2 Discovery (Pentium Pro) [no datasheet] ?...
**82C681/2/6/7 386/486WB EISA c:92...
**82C683 386/486AWB EISA [no datasheet] ?...
**82C693/6/7 Pentium uP Write Back Cache EISA c:93...
**82C700 FireStar c:97...
**82C701 FireStar Plus c:97...
**82C750 Vendetta [no datasheet] ?...
**82c801 SCWB2 DX Single Chip Solution c:92...
**82C802 SCWB2 PC/AT Single Chip [no datasheet] ?...
**82C802G/GP System/Power Management Controller (cached) c:93...
**82C895 System/Power Management Controller (cached) c:Sep94...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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*Symphony...
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*UMC...
*Unresearched:...
*VIA...
**VT82C586/A/B PCI Integrated Peripheral Controller <10/13/96
***Info:
The VT82C586A PIPC (PCI Integrated Peripheral Controller) is a high
integration, high performance and high compatibility device that
supports Intel and non-Intel based processor to PCI bus bridge to make
a complete Microsoft PC97 compliant PCI/ISA system. In addition to
complete ISA extension bus functionality, the VT82C586A includes
standard intelligent peripheral controllers:
a) Master mode enhanced IDE controller with dual channel DMA engine
and interlaced dual channel commands. Dedicated FIFO coupled with
scatter and gather master mode operation allows high performance
transfers between PCI and IDE devices. In addition to standard PIO
and DMA mode operation, the VT82C586A also supports the emerging
UltraDMA-33 standard to allow reliable data transfer rates up to
33MB/sec throughput. The IDE controller is SFF-8038i v1.0 and
Microsoft Windows-95 compliant.
b) Universal Serial Bus controller that is USB v1.0 and Universal HCI
v1.1 compliant. The VT82C586A includes the root hub with two function
ports with integrated physical layer transceivers. The USB controller
allows hot plug and play and isochronous peripherals to be inserted
into the system with universal driver support. The controller also
implements legacy keyboard and mouse support so that legacy software
can run transparently in a non-USB-aware operating system environment.
c) Keyboard controller with PS2 mouse support.
d) Real Time Clock with 128 byte extended CMOS. In addition to the
standard ISA RTC functionality, the integrated RTC also includes the
date alarm and other enhancements for compatibility with the emerging
ACPI standard.
e) Notebook-class power management functionality including event
monitoring, CPU clock throttling (Intel processor protocol), power and
leakage control, hardware- and software-based event handling, general
purpose IO, chip select and external SMI. The power management
function supports legacy APM v1.2.
f) Plug and Play controller that allows complete steerability of all
PCI interrupts to any interrupt channel. Two additional interrupt and
DMA channels are provided to allow plug and play and reconfigurability
of on-board peripherals for Windows 95 compliance.
The VT82C586A also enhances the functionality of the standard ISA
peripherals. The integrated interrupt controller supports both edge
and level triggered interrupts channel by channel. The integrated DMA
controller supports type F DMA in addition to standard ISA DMA modes.
Compliant with the PCI-2.1 specification, the VT82C586A supports
delayed transactions so that slower ISA peripherals do not block the
traffic of the PCI bus. Special circuitry is built in to allow
concurrent operation without causing dead lock even in a PCI-to-PCI
bridge environment The chip also includes four levels (doublewords) of
line buffers from the PCI bus to the ISA bus to further enhance
overall system performance.
***Versions:...
***Features:...
**VT82C596/A Mobile PCI Integrated Peripheral Controller <11/05/97...
**VT82C686A/B PCI Super-I/O Integrated Peripheral Ctrl. <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
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