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**82489DX Advanced Programmable Interrupt Controller 10/12/92
***Notes:...
***Info:...
***Versions:...
***Features:...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**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...
**800 series...
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*HMC (Hulon Microelectronics)...
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*OPTi...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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
***Notes:...
***Info:...
***Configurations:...
***Features:
[features found only in the 802GP are marked in [] brackets ]
o Processor interface:
- Intel 80486SX, DX, DX2, SLe, DX4, P24T, P24D
- AMD 486SX, DX2, DXL, DXL2, Plus
- Cyrix DX, DX2, M7
- CPU frequencies supported 20, 25, 33, 40 and 50MHz
o Cache interface:
- Direct mapped cache
- Two banks interleaved or single bank non-interleaved
- 64, 128, 256 and 512K cache sizes
- Programmable wait states for L2 cache reads and writes
- 2-1-1-1 read burst and zero wait state write @ 33MHz
- No Valid bit required
[- Supports external single-chip cache modules from thyroid-party ]
[ vendors for high performance at 50MHz ]
- Supports CPUs with L1 write-back support
o DRAM interface:
- Up to 128MB main memory support
- Supports 256KB, 1MB, 4MB, and 16MB single- and double-sided SIMM
modules
- Read page hit timing of 3-2-2-2 at 33MHz
- Supports hidden, slow. and CAS-before-RAS refresh
- Four RAS lines to support four banks of DRAM
[- Eight RAS lines to support four banks of DRAM ]
- Programmable wait states for DRAM reads and writes
[- Programmable memory holes for supporting ISA memory ]
- Enhanced DRAM configuration map
[- Strong drivers on the MA lines (12/24mA) ]
[- Supports asymmetric DRAMs ]
o Power management:
- Support for SMM (System Management Mode) for system power
management implementations
- Programmable power management
[- CPU clock control ]
- Programmable wake-up events through hardware, software, and
external SMI source
- Multiple level GREEN support (NESTED_GREEN)
- STPCLK# protocol support
[- Programmable GREEN event timer ](802G only)
[- Individually programmable peripheral ](802GP only)
o ISA interface:
- 100% IBM PC/AT ISA compatible
[- Programmable edge- or level-trigger interrupts ]
- integrates DMA, timer and interrupt controllers
[- Slew rate control for output drivers ]
- Optional PS/2 style IRQ1 and IRQ12 latching
o VESA VL interface:
- Conforms to the VESA V2.0 specification
- Optional support for up to two VL masters
o Miscellaneous features: (802G only)
- Full support for shadow RAM, write protection, L1/L2
cacheability for video, adapter, and system BIOS
- Enhanced arbitration scheme
- Transparent 8042 emulation for fast CPU reset and GATEA20
generation
o [Miscellaneous features: ](802GP only)
[- Full support for flash, write protection, L1/L2 ]
[ cacheability for video, adapter, and system BIOS ]
[- Provides Micro Channel bridge support ]
[- 10-/16-nit I/O decodes ]
[- Enhanced arbitration scheme ]
o Packaging:
- Higher integration
- Reduced TTL count
- Low-power, high~speed 0.8-micron CMOS technology
- 208-pin PQFP (Plastic Quad Flat Pack)
**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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*UMC...
*Unresearched:...
**S
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