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**M6117          386SX Single Chip PC                              <97
***Notes:...
***Info:...
***Versions:...
***Features:
o   Static Intel 386SX compatible Core 
    - Operating Power Supply  5.0V 
    - Operating frequency 25Mhz to 40Mhz 
o   Memory Controller
    - Supports EDO DRAM 
    - Supports on board memory size up to 16M bytes for 386SX or 64M 
      bytes upgrade system using 256K, 512K, 1M, 4M or 16M SIMMs 
    - Supports up to 4-bank DRAM interface 
    - Page interleave DRAM access for FP mode 
    - Programmable shadow RAM from A to B segment in 128K byte and C 
      to F segment in 32K byte unit 
    - Provides "RAS only" refresh or "CAS before RAS” refresh types 
    - Parity generation and checking 
o   Peripheral Interface 
    - Includes 2 cascaded 8237 DMA controllers 
    - Includes 1 74612 memory mapper 
    - Includes 2 cascaded 8259 interrupt controllers 
    - Includes 1 8254 programming counter 
o   ISA Interface
    - Executes cycles for requests from CPU, DMA and ISA bus master 
    - Assembles or de-assembles data for multiple bus cycle or 
      unmatched data width 
    - Generates refresh signals to ISA slots during DRAM refresh 
      cycles 
o   Built-in RTC 
    - Internal Real Time Clock that provides 128 byte CMOS RAM 
o   Programmable 2 channels chip select 
    - Provide chip select for memory  or I/O device without external 
      address decode random logic 
o   Built-In PS2/AT Keyboard Controller
    - Internal PS2/AT keyboard controller and mouse 
o   PMU interface 
    - Supports CPU SMM mode, SMI feature 
    - Supports APM control 
    - Provides External Suspend mode switch 
    - Provides four (4) system states for power saving (On, Doze, 
      Standby, Suspend) 
    - Supports RTC alarm wake up control 
o   Expandable GPI/O signals
    - Provides sixteen External power control input and output signals 
    - Provides sixteen independent pin for general purpose input and 
      output signals 
o   Watchdog timer 
    - When timer times out , a system reset or NMI or IRQ happens 
o   IDE interface
    - Provides a decoder for external IDE connection
o   Packaging 
    - 208-pin PQFP package

**
**Support Chips:
**M1535/D        South Bridge                                        ?...
**
**May not exist:...
**Later Chipsets:...
**Other:...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82485       Turbo Cache (and 485Turbocache)                      c90
***Notes:...
***Info:...
***Versions:...
***Features:...
**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
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...