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**82395SX     Smart Cache                                     12/17/90
***Notes:...
**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...
**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...
**HT18          80386SX Single Chip                            c:Sep91
***Info:...
***Configurations:...
***Features:...
**HT21          386SX/286 Single Chip (20 MHz)                 c:Aug91...
**HT22          386SX/286 Single Chip (25 MHz)                 c:Sep91...
**HT25          3-volt Core Logic for 386SX                    c:Dec92...
**HT35          Single-Chip Peripheral Controller [partial info]     ?...
**HTK320        386DX Chip Set                                 c:Sep91...
**HTK340        "Shasta" 486 Chip Set                          c:Jun92...
**Support Chips:
**HT44          Secondary Cache                                c:Jun92...
**Other:...
*HMC (Hulon Microelectronics)...
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*Unresearched:...
*VIA...
*VLSI...
**VL82C486         Single-Chip 486, SC486, Controller                ?
***Basics:...
***Info:...
***Configurations:...
***Features:
****Just those that differ to the VL82C480:...
****Complete:
o   Fully compatible with 486-based PC/AT systems
o   Up to 33 MHz CPU operation
o   Replaces the following peripheral logic on the motherboard:
    - Two 82C37A DMA controllers
    - 74LS612 memory mappers (extended to support 64 MB)
    - Two 82C59A interrupt controllers
    - 82C54 timer
    - 82284 clock generator and ready interface
    - 82288 bus controller
o   Includes:
    - Memory/refresh controller
    - Port A, B, and NMI logic
    - Bus steering logic
    - Parity generation/checking for on-board DRAM
    - Turbo control
    - Hidden off-board, stolen on-board refresh
    - Staggered RAS refresh
    - Three-stateable outputs for board testing
o   Memory controller features include:
    - Page Mode DRAM access
    - One to four banks 32 bits wide
    - One or two banks 64 bits wide
    - Two- or four-way interleave support
    - Programmable RAS#/CAS# timing
    - Burst support
o   Supports:
    - Up to 64 MB system memory
    - 256K, 1M or 4M DRAM
    - Double-sided SIMMs
    - Secondary cache interface
    - 8- or 16-bit wide BIOS ROM
    - Shadow RAM in the 640K-1M area
    - Asynchronous ISA bus operation up to 16 MHz
    - Relocation of slot ROMs
o   Power saving features include:
    - Sleep Mode
    - Slow DRAM refresh
o   Other features:
    - Programmable for 10- or 16-bit internal I/O addressing
    - Programmable drive on the DRAM and ISA bus signals
    - Programmable memory access to define "fast-bus", local bus, slot
      bus, non-cacheable and write-protect areas
    - Input pin defines access to local bus devices
o   1.0-micron CMOS technology
o   208-lead MQFP (metric quad flat pack) 


**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: ...
**Disk:...
**Modems:...
**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...