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**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...
**Notes:
InfoWorld Apr 10, 1989 p42 - Video Severn and G-2 Will Merge to form
Headland Technology.
...affiliate of LSI logic.

According to:
http://www.vgamuseum.info/index.php/news/itemlist/category/15-headland-technology

Graphics chips were renamed from  GC*** to HT***. In this document any
part no. that differs only by  GC/HT have been assumed to be a renamed
part.

**GC101/102     12/16MHz PC/AT Compatible Chip Set             c:Feb88...
**GC101/102/103 12/16MHz PC/AT Compatible Chip Set + EMS 4.0   c:Jul89...
**GCK113        80386 AT Compatible Chip Set                   c:oct89...
**GCK181        Universal PS/2 Chip Set                        c:Mar89...
**HT11          Single 286 AT Chip [no datasheet]               <Aug90...
**HT12/+/A      Single 286 AT Chip with EMS support            c:Aug90...
**HT18          80386SX Single Chip                            c:Sep91...
**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)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
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*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
**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:...
**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...
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