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**82430NX PCIset (Pentium) NX (Neptune) (82433NX/82434NX) Mar94
***Notes:...
***Info:...
***Configurations:
Parts:
Intel 82434NX (PCMC) PCI/CACHE/MEMORY CONTROLLER
Intel 82433NX (LBX) LOCAL BUS ACCELERATOR
ISA (single CPU):
82434NX + 2x 82433NX + 82378IB
82434NX + 2x 82433NX + 82378ZB
The main difference between the 82378IB and 82378ZB is the number of
PCI masters supported. See the 82378 section for details. The
pairing with the IB variant is unlikely as it was outdated when the
430NX was introduced.
ISA (Dual CPU):
82434NX + 2x 82433NX + 82379AB
EISA:
Intel 82434NX + 2x 82433NX + 82374EB + 82375EB
Intel 82434NX + 2x 82433NX + 82374SB + 82375SB
The main difference between the EB and SB variants is that the SB
includes power management options. It was released later when
various enhancements had been made to the EB variant. See the
82374/82375 section for details. It is unlikely the EB variant is
paired with this chipset as it was replaced by the SB, when the
430NX was being introduced.
These chipsets are often paired with the SMC 665 for I/O support or
the NCR 810 for SCSI.
According to a Usenet post in comp.sys.ibm.pc.hardware.chips from '94,
there are at least 2 revisions of this chipset. The latter resolves
some issues with posted buffered writes.
****Usenet post (11/7/94):...
***Features:...
**82430FX PCIset (Pentium) FX (Triton I) (82437FX/82438FX)01/31/95...
**82430MX PCIset (Pentium) MX (Mobile Triton)(82437/438MX)11/01/95...
**82430HX PCIset (Pentium) HX (Triton II) (82439HX) 02/12/96...
**82430VX PCIset (Pentium) VX (Triton II) (82437VX/82438) 02/12/96...
**82430TX PCIset (Pentium) TX (Triton II) (82439TX) 02/17/97...
**82450KX/GX PCIset (Pentium Pro) KX/GX (Mars/Orion) 11/01/95...
**
**Support Chips:
**82091AA Advanced Interface Peripheral (AIP) c93...
**8289 Bus Arbiter (808x) c79...
**82289 Bus Arbiter for iAPX 286 Processor Family c83...
**82258 Advanced Direct Memory Access Coprocessor(ADMA) 01/01/84...
**82335 High-Integration Interface Device For 386SX c:Nov88...
**82360SL I/O Subsystem 10/05/90...
**82370 Integrated System Peripheral (for 82376) c:Oct88...
**82371FB/SB PCI ISA IDE Xcelerator 82371FB/82371SB (PIIX/3) 01/31/95...
**82371MX Mobile PCI I/O IDE Xcelerator (MPIIX) 11/01/95...
**82371AB PCI-TO-ISA / IDE Xcelerator 82371AB (PIIX4) 02/17/97...
**82374/82375 PCI-EISA Bridge (82374EB/82375EB, 374SB/375SB) c:Mar93...
**82378 System I/O (SIO) (82378IB and 82378ZB) c:Mar93...
**82379AB System I/O-APIC (SIO.A) <Dec94...
**82380 32-bit DMA Controller w/ Integrated Peripherals 02/01/87...
**82380FB/AB PCIset: 82380FB Mobile PCI-to-PCI Bridge(MPCI2) 02/17/97...
**82384 Clock Generator and Reset Interface c86...
**82385 32-bit Cache Controller for 80386 09/29/87...
**82385SX 32-bit Cache Controller for 80386SX 01/25/89...
**82395DX High Performance Smart Cache 06/18/90...
**82395SX Smart Cache 12/17/90...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**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...
**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)...
*Logicstar...
*Motorola...
*OPTi...
**82C898 System/Power Management Controller (non-cache)c:Nov94
***Notes:...
***Info:...
***Configurations:...
***Features:
o Processor interface:
- Intel 486SX, DX, DX2, SLe, DX4, P24T, P24D
- AMD 486DX, DX2, DXL, DXL2, Plus
- Cyrix DX, DX2, M7
- CPU frequencies supported 20, 25, 33, 40 and 50MHz
- Auto clock detection
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
- Eight RAS lines to support eight banks of DRAM
- Programmable wait states for DRAM reads and writes
- Enhanced DRAM configuration map
- Strong drive on MA lines (12/24mA)
- Supports asymmetric DRAMs
o Power management:
- Support for SMM (System Management Mode) for system power
management implementations
- Programmable power management
- Programmable wake-up events through hardware, software, and
external SMI source
- Multiple level GREEN support (NESTED_GREEN)
- STPCLK# protocol support
- Programmable GREEN event timer
o ISA interface:
- 100% IBM PC/AT ISA compatible
- Integrates DMA, timer, and interrupt controllers
- 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:
- Full support for shadow RAM, and write protection for video,
adapter, and system BIOS
- Enhanced arbitration scheme
- Transparent 8042 emulation for fast CPU Reset and Gate A20
generation
o Packaging:
- Higher integration
- Reduced TTL count
- Low-power, high-speed 0.8-micron CMOS technology
- 208-pin PQFP (Plastic Quad Flat Pack)
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
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