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**82430LX PCIset (Pentium) LX (Mercury) (82433LX/82434LX) 03/22/93
***Notes:
Date source: TimelineDateSort7_05.pdf
Originally known as the 82430 chipset
Information taken from:
1. 82420_PCIset_ISA_and_EISA_Bridges_Mar93.pdf
2. Intel_Peripheral_Components_1994.pdf
3: 1995_Intel_Pentium_Processors_and_Related_Components.pdf*
>* Datasheet is for LX and NX variants.
Each source has 3 datasheets:
1. 2. 3:
General 82430 Mar'93 Oct'93 Nov'94
82434LX (PCMC) none* Nov'93 Dec'94
82433LX (LBX) none* Oct'93 Dec'94
>* will use the date Mar'93
Differences Between Mar'93 and Oct'93/Nov'93:
General Section:
References in the Mar'93 datasheet to the 82378IB have been changed
to the 82378 in the Oct'93, Indicating the 82378ZB has been
introduced.
82434LX Section:
Only a minor difference,"CPU/Cache" changed to. "CPU/Cache and DRAM
subsystem" at last part of first paragraph.
82433LX Section:
Some features worded slightly differently, changes shown in the text
Differences Between Oct'93/Nov'93 and Nov'94/Dec'94:
This datasheet includes information relevant to both the 430LX and
430NX. The datasheet is arranged such that all text describes both
chipsets, except shaded areas of text, that describe how the 430NX
differs. Any of these sections that only describe the 430NX are not
quoted in the Info and features section. The same datasheet, with
these sections is quoted in the 430NX section.
General Section:
Some features worded slightly differently, none significant. Except
for the later datasheet claiming both the 430LX and NX support 512MB
ram. This is a misprint, or clumsy wording. The Info section makes
specific reference to the 82378ZB variant. Also the 82375/374
combination is referred to as the 82375EB/SB and 82374EB/SB,
indicating the newer EB variant is now available.
82434LX Section:
A minor difference in the features section, see changes in the text.
Aside from references to the NX variant, the info section the same,
except that it ends just before the sentence "Up to twelve single-
sided SIMMs..."
82433LX Section:
Some features worded slightly differently, Mainly "host" replaced
with "CPU", other changes shown in the text. Aside from references
to the NX variant, the info section is the same.
***Info:...
***Configurations:
Parts:
Intel 82434LX (PCMC) PCI/CACHE/MEMORY CONTROLLER
Intel 82433LX (LBX) LOCAL BUS ACCELERATOR
ISA:
82434LX + 2x 82433LX + 82378IB
82434LX + 2x 82433LX + 82378ZB
The main difference between the 82378IB and 82378ZB is the number of
PCI masters supported. See the 82378 section for details.
EISA:
Intel 82434LX + 2x 82433LX + 82374EB + 82375EB
Intel 82434LX + 2x 82433LX + 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 SB variant is
paired with this chipset as it was released when the 430LX was being
replaced with the 430NX.
These chipsets are often paired with the SMC 665 for I/O support or
the NCR 810 for SCSI.
Why this section is so detailed:
Any chips manufactured before Jan 94 have serious problems with the
PCI/EISA bridge's throughput. The problem affects the ISA version too,
but is less pronounced.
Two references from November'93 give some inportant detail that seems
to be missed in the datasheets. It would appear there is an update to
the 82374/82375EB EISA components in late '93, that has some
significant changes. these are not reflected in the datasheets
referenced.
It would appear the mentioned redesign, maps well to the update of
82378 ISA component from the 82378IB to the 82378ZB. Though no
information specifically stating this has been found. It is only that
these are in the same time period.
****References:...
***Features:...
**82430NX PCIset (Pentium) NX (Neptune) (82433NX/82434NX) Mar94...
**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...
**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...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82C802G/GP System/Power Management Controller (cached) c:93
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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