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**440 series:
***440FX (Natoma)       05/06/96...
***440LX (Balboa)       08/27/97...
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**VL82C108 TOPCAT Combination I/O chip                               ?
***Info:
The VL82C108 Combo  chip replaces with a single  100-pin chip, several
of   the   commonly  used   peripherals   found  in   PC/AT-compatible
computers. This  chip, when used with VLSI  PC/AT-compatible chip set,
allows designers to implement a very cost-effective minimum chip count
motherboard containing functions that are common to virtually all PCs.

The on-chip UART  is completely software compatible  with the VL16C450
ACE.

The bidirectional  parallel port  provides a PS/2  software compatible
interface between  a Centronics-type printer and  the VL82C108. Direct
drive is provided so that all  that is needed to interface to the line
printer is  a resistor/  capacitor network. the  bidirectional feature
(option) is software programmable for backwards PC/AT-compatibility.

The  keyboard/mouse  controller  is  selectable  as  PC/AT-  or  PS/2-
compatible.

Included  is  the control  logic  necessary  for  the support  of  the
Integrated Drive Electronics (IDE) hard  disk bus interface. Hard disk
drives which support the IDE interface often refer to the interface as
"AT Bus" compatible or "Embedded AT Bus" compatible.

The  Combo I/O  chip also  includes  selectable chip  selects for  the
internal  UART and  printer port,  and  four fixed  chip selected  for
external floppy and hard disk controllers.

***Versions:...
***Features:
o   Combines the following PC/AT compatible peripheral chips:
    VL16C450 UART         - COM!:
    Parallel Printer Port - LPT1: 
    Keyboard/Mouse Ctrl.  - KBD
o   Serial ports fully 16C450-compatible
o   Bidirectional; line printer port
o   CMOS direct drive of Centronics-type parallel interface
o   PC/AT- or PS/2-compatible keyboard and mouse controller
o   IDE bus control signals include (two external 74LS245 and one 
    74ALS244 - or equivalent - buffers are required)
o   Selectable chip select decodes
o   Resides on SD bus directly
o   Software controlled power-down with automatic keyboard "wakeup" 
    option
o   Single 100-lead plastic quad flat pack


**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...
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