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**82498/493   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**
**Later chipsets (basic spec):
**440 series:...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
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**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...
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*Unresearched:...
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*VLSI...
**VL82C380         Single chip 386DX PC/AT Controller +on-chip cache ?
***Info:...
***Configuration:...
***Features:
o   Highly integrated system solution using VL82C380 single-chip 
    ISA controller, VL82C113A Combination I/O chip and 3 TTLs
o   Supports one- or two-bank write-back cache
    - External TAGs
    - 32 Kbyte to 1 Mbyte cache size
    - 0 or 1 wait state writes
    - Separate dirty RAM not required; first write to clean, valid 
      line sets dirty bit 
o   Caches main system DRAM only
o   Maintains full coherency during DMA/MASTER mode cycles
o   Optional remap of video and hard disk ROM BIOS onto motherboard, 
    allowing use of single BIOS ROM
o   Optional bus acceleration for video accesses, with programmable 
    address regions
o   Software-configurable
o   Utilizes proven 8254, 8237, 8259 megacalls used in all previous
    VLSI Technology PC/AT chipsets
o   High-performance memory controller:
    - One wait state red up to 33 MHz, Zero wait state reads up to 
      40 MHz
    - Automatic configuring of Bank start address
    - Each bank individually configurable for any supported DRAM type
    - shadow RAM support form 640K to 1M in 16K segments
    - Staggered refresh reduces power supply peak currents
    - Decoupled-mode refresh improves performance
    - Programmable refresh frequency for support of slow-refresh DRAMs
    - Up to 64 Mbytes of motherboard memory in one to four banks using
      256K, 1M, and/or 4Mbit DRAM, all motherboard memory is cacheable
    - Direct-drive up to 2 banks (32 Mbyte) of motherboard memory
    - Two-way page mode interleave
    - Supports 32-bit ini-interleaved or interleaved configurations
    - Programmable RAS/CAS timing supported for Cycle-start, Trp, 
      Trcd, and Tacs

**VL82C325             VL82C386SX System Cache controller            ?
***Info:...
***Versions:...
***Features:...
**VL82C335             VL82C386DX System Cache ctrl. [no d.sheet]    ?...
**VL82C315A/322A/3216  Kodiak 32-Bit Low-Voltage Chip Set            ?...
**VL82C420/144/146     SCAMP IV [no datasheet, some info]          c93...
**VL82C480         System/Cache/ISA bus Controller                   ?...
**VL82C481         System/Cache/ISA bus Controller                 c92...
**VL82C486         Single-Chip 486, SC486, Controller                ?...
**VL82C425         486 Cache controller                              ?...
**????????         Cheetah 486, PCI [no datasheet]                   ?...
**VL82C3216        Bus Expanding Controller Cache with write buffer  ?...
**VL82C521/522     Lynx/M                                            ?...
**VL82C530         Eagle Ð                                         c95...
**VL82C541/543     Lynx                                            c95...
**VL82C591/593     SuperCore 590                                   c94...
**VL82C594/596/597 Wildcat                                         c95...
**I/O Chips:
**VL82C106 Combination I/O chip                                      ?...
**VL82C107 SCAMP  Combination I/O chip                               ?...
**VL82C108 TOPCAT Combination I/O chip                               ?...
**VL82C110 Combination I/O chip                                      ?...
**VL82C113 SCAMP  Combination I/O chip                               ?...
**VL82C114 Combination I/O chip                                      ?...
**Video: ...
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**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...