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**82378       System I/O (SIO) (82378IB and 82378ZB)           c:Mar93
***Notes:...
***Info:...
***Versions:
82378IB   c:mar93  (Only supports 2 PCI Bus Masters)
82378ZB   c:dec93  (Supports 4 PCI Bus Masters)
82378ZB   c:dec94  (Supports 6 PCI Bus Masters)

Don't know how to tell the difference between the last 2.

For some more (important) details see the Configurations section of
the 82430LX section, and the errata document below:

****Errata:2 (Aug'93)...
***Features:...
**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)...
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*OPTi...
**82C495XLC      PC/AT Chip Set                                   c:93
***Info:...
***Configurations:...
***Features:
o   Low cost, low power, CMOS Technology
o   Supports 386DX, 486 DX/DX2/SX CPUs as well as Intel
    P24T and Cyrix Cx486S/S2 and Cx486DX/DX2 CPUs
o   One 160-pin CMOS Plastic Flat Package (PFP), one 84
    pin PLCC (or one 100-pin PFP)
o   Internal buffers and termination to reduce external parts count
o   Copy-Back Direct-Mapped Cache: 32/64/128/256KB for 386, and 
    64/128/256/512KB for 486
o   Up to 10% performance enhancement from write-through cache scheme
o   Supports 2-1-1-1 or 3-2-2-2 cache cycles
o   On-chip comparator determines cache hit/miss
o   Up to 64MB of local high-speed, page mode DRAM memory space
o   Burst line fill during cache read-miss
o   Control of one non-cacheable region
o   Shadow RAM support for system, video and adapter card BIOS
o   Optional caching of shadowed video BIOS
o   Hidden refresh support to enhance system performance
o   Turbo/slow speed selection (386 mode only)
o   AT bus clock selectable from CLKI (/6, /5 /4, /3)
o   CAS-before-RAS refresh reduces power consumption
o   Optional 0 or one wait state for cache write-hit
o   387 coprocessor support for 386 mode
o   Internal CD and CA bus pull-up resistors to save components and 
    board real-estate
o   Comprehensive VL bus and OPTi high-performance local bus support
o   On-chip hardware provides direct support for up to two
    VL bus master devices 


**82c496A/B      DXBB PC/AT Chipset                             <Mar92...
**82C496/7       DXBB PC/AT Chipset (Cached)                 <01/16/92...
**82C498         DXWB PC/AT chipset [no datasheet]                   ?...
**82C499         DXSC DX System Controller                        c:93...
**82C546/547     Python PTM3V                                     c:94...
**82C556/7/8     Viper [no datasheet]                                ?...
**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:...
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