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**82378       System I/O (SIO) (82378IB and 82378ZB)           c:Mar93
***Notes:...
***Info:...
***Versions:...
***Features:
****All
o   Provides the Bridge between the PCI Bus and ISA Bus.
o   100% PCI and ISA Compatible
    - PCI and ISA Master/Slave Interface
    - Directly Drives 10 PCI Loads and 6 ISA Slots
    - Supports PCI at 25 MHz and 33.33 MHz
    - Supports ISA from 6 MHz to 8.33 MHz
o   Enhanced DMA Functions
    - Scatter/Gather
    - Fast DMA Type A, B, and F
    - Compatible DMA Transfers
    - 32-Bit Addressability
    - Seven independently Programmable Channels
    - Functionality of Two 82C37 A DMA Controllers
o   Integrated Data Buffers to Improve Performance
    - 8-Byte DMA/ISA Master Line Buffer 
    - 32-Bit Posted Memory Write Buffer to ISA
o   Integrated 16-Bit BIOS Timer
o   Non-Maskable Interrupts (NMI)
    - PCI System Errors
    - ISA Parity Errors
o   Arbitration for ISA Devices
    - ISA Masters
    - DMA and Refresh
o   Utility Bus (X-Bus) Peripheral Support
    - Provides Chip Select Decode
    - Controls Lower X-Bus Data Byte Transceiver
****Mar'93, Oct'93...
****All...
****Dec'94...
****Mar'93...
****Oct'93...
****Dec'94...
**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...
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*Logicstar...
**SL6012  Memory Mapper for PC-AT (74LS612 compatible)          <Jul87
***Info:...
***Versions:...
***Features:...
**SL9010  System Controller (80286/80386SX/DX, 16/20/25MHz)     <oct88...
**SL9020  Data Controller                                       <oct88...
**SL9025  Address Controller                                    <oct88...
**SL9090  Universal PC/AT Clock Chip                            <oct88...
**SL9250  Page Mode Memory Controller (16/20MHz 8MB Max)        <oct88...
**SL9350  Page Mode Memory Controller (16/20/25MHz 16MB Max)    <oct88...
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