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**82420TX/ZX  PCIset (for 486) TX (Saturn), ZX (Saturn II)     c:Nov92
***Notes:...
***Info:...
***Versions:...
***Configurations:
Original TX version (Saturn):
  ISA:
    82424TX + 82423TX + 82378IB  c:nov92
    82424TX + 82423TX + 82378ZB  c:oct93*
  EISA:
    82424TX + 82423TX + 82375EB + 82374EB  c:mar93 

Updated ZX version (Saturn II):
  ISA: 
    82424ZX + 82423TX +  82378IB c:oct93*
    82424ZX + 82423TX +  82378ZB c:oct93
  EISA:
    82424ZX + 82423TX + 82375EB + 82374EB  c:oct93  
    82424ZX + 82423TX + 82375SB + 82374SB  c:94  
  
Updated ZX version (Saturn II-50):
  ISA: 
    82424ZX-50 + 82423TX +  82378IB c:oct93*
    82424ZX-50 + 82423TX +  82378ZB c:oct93
  EISA:
    82424ZX-50 + 82423TX + 82375EB + 82374EB  c:oct93
    82424ZX-50 + 82423TX + 82375SB + 82374SB  c:94  
  
>* These configurations are unlikely as the 82378ZB variant was 
   introduced at the same time as the Saturn II 82424ZX.

For the differences  between the IB and ZB variants  for the 82378 see
the relevant section. Same for the EB ans SB variants of the 82375/4.


These chipsets  are often paired with  the SMC 665 for  I/O support or
the NCR 810 for SCSI.


***Features:...
**82420EX     PCIset (for 486) EX (Aries)   (82425EX/82426EX)   <Dec94...
**82430LX     PCIset (Pentium) LX (Mercury) (82433LX/82434LX) 03/22/93...
**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...
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