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**440 series:
***440FX (Natoma)       05/06/96...
***440LX (Balboa)       08/27/97...
***440BX (Seattle)      c:Apr'98...
***440DX (?)            c:?...
***440EX (?)            c:Apr'98...
***440GX (Marlinespike) 06/29/98...
***440ZX & 440ZX-66 (?) 01/04/99...
***440ZX-M (?)          05/17/99...
***440MX (Banister)     05/17/99...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
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*TI (Texas Instruments)...
**TACT82S411  Snake+ Single-Chip AT Controller [no datasheet]      c91
***Notes:...
**TACT83000   AT 'Tiger' Chip Set (386)                            c89...
**TACT84500   AT Chip Set (486, EISA) [no datasheet, some info]    c91...
**Other:...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
**FE2010/A      XT CPU controller integrated Circuit         >11/22/85
***Notes:...
***Info:...
***Versions:...
***Features:...
**FE2011        CPU Core Logic for PS/2 Model 30 Compatible       c:87...
**FE3400/B      80286-Based AT Compatible CPU Core Logic (12 MHz) c:86...
**FE3500/B      80286-Based AT Compatible CPU Core Logic (12 MHz) c:87...
**FE3600/A/B/C  16/20MHz AT Chip set                              c:88...
**FE5300        CPU Core Logic for PS/2 Model 50/60 Compatibles   c:87...
**FE5400        CPU Core Logic for PS/2 Model 50/60 Compatibles   c:87...
**FE6500        CPU Core Logic for PS/2 Model 70/80 Compatibles   c:88...
**WD6400SX/LP   CPU Core Logic for PS/2 386SX Compatibles          <90...
**WD6500        CPU Core Logic for PS/2 386DX/486 Compatible       <90...
**WD7600A/LP/LV System Chip Set for 80286 or 80386SX         <11/25/91...
**WD7700/LP     System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD7855        System controller for 80386SX                <09/25/92...
**WD7900/LP/LV  System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD8110        System controller for 80386DX/486            <11/30/93...
**
**Support Chips:
**WD76C20x   Floppy, RTC, IDE and Support Logic Device       <11/25/91...
**WD76C30x   Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91...
**WD7615     Desktop Buffer Manager                          <04/15/92...
**WD7625     Desktop Buffer Manager                          <10/01/92
***Info:...
***Versions:...
***Features:
ADDRESS BUFFER FEATURES
o   Allows WD7SC10A, WD7855, WD8110, WD7710, and WD7910 based designs 
    with WD7620/30 for laptop or notebook systems
o   Will work in three different power supply modes:
    - 3.3V only
    - 5V only
    - Mix mode 3.3V and 5V
o   Direct connect to AT Address Bus SA1:19 and LA17:23 with 24 mA 
    drive
o   Power Management Control (PMC) input MUX 
o   General purpose suspend/resume and power supply control logic
o   Fifteen-bit Power Management Control (PMC) output register and 
    control logic
o   Low power request and resume signal delay simplify the design of 
    the power supply
o   Watchdog timer for system idle detection
o   DRAM WE signal from WD7xc10 inversion and buffering
o   RESIN output generation from reset switch (RSTSW)
o   System Reset generation
o   Chip select decoding for registers in the WD7625LV Data Buffer 
    Function
o   144-pin SQFP package

DATA BUFFER FEATURES
o   Allows WD7SC10A, WD7855, WD7710, and WD7910 based designs with 
    WD7620/30 for laptop or notebook systems
o   Will work in three different power supply modes:
    - 3.3V only
    - 5V only
    - Mix mode 3.3V and 5V
o   Direct connection to AT data bus; 20K integrated pull-up for 
    SD(0:7)
o   Direct connection to IDE data bus
o   Two general purpose 8-bit I/O registers:
    - Register A
    - Register B
o   One general purpose 8-bit I/O Register C, with single bit 
    set/reset control
o   One general purpose 1-bit I/O Register Y0
o   One 4-bit general purpose input only Register Z
o   DRQ multiplexing plus 20K integrated pull-down
o   DACK demultiplexing
o   SMEMR, SMEMW signals plus 22K internal pull-up
o   144-pin SOFP package

**WD8120LV   Super I/O [no datasheet]                                ?
**Other Chips:...
*Winbond...
*ZyMOS...
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