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**82395SX     Smart Cache                                     12/17/90
***Notes:...
**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...
**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...
**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...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
**VL82C594/596/597 Wildcat                                         c95
***Notes:...
***Info:...
***Configurations:...
***Features:...
**I/O Chips:
**VL82C106 Combination I/O chip                                      ?...
**VL82C107 SCAMP  Combination I/O chip                               ?...
**VL82C108 TOPCAT Combination I/O chip                               ?...
**VL82C110 Combination I/O chip                                      ?...
**VL82C113 SCAMP  Combination I/O chip                               ?...
**VL82C114 Combination I/O chip                                      ?...
**Video: ...
**Disk:...
**Modems:...
**Other:
***VLX*XXX...
***VL16XXX
VL16C450  UART equivalent to VL82C50A but with, scratchpad register, and various improvements
VL16C451  UART equivalent to VL16C450 with Bidirectional Parallel port 
VL16C451B 'Enhanced' UART equivalent to VL16C450 with Bidirectional Parallel port 
VL16C452  2x UART otherwise equivalent to VL16C451
VL16C452B 'Enhanced'2x UART otherwise equivalent to VL16C451
VL16C550 UART same as VL16C450 but with 16 byte FIFO 
VL16C551 UART same as VL16C450 but with 16 byte FIFO (not NSC-compatible?)
VL16C552 UART same as VL16C452 but with 16 byte FIFO
VL16C554 UART same as VL16C552 but Quad
***VL65XXX...
***VL80XXX...
***VL82XXX...
***VL85XXX...
***VL86XXX...
***VXXXXXX...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...

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