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**82371MX     Mobile PCI I/O IDE Xcelerator (MPIIX)           11/01/95
***Notes:...
***Info:...
***Versions:...
***Features:
o   Provides a Bridge Between the PCI Bus and Extended I/O Bus
    - PCI Bus; 25-33 MHz
    - Extended I/O Bus; 7.5-8.33 MHz
o   System Power Management (Intel SMM Support)
    - Programmable System Management Interrupt (SMI)-Hardware/Software
      Events, EXTSMI#
    - Programmable CPU Clock Control (STPCLK#) with Auto Clock 
      Throttle
    - Peripheral Device Power Management (Local Standby)
    - Suspend State Support (Suspend-to-DRAM and Suspend-to-Disk)
o   Enhanced DMA Functions
    - Two 8237 DMA Controllers
    - Fast Type F DMA
    - Compatible DMA Transfers
    - PC/PCI DMA Expansion for Docking Support
o   Fast IDE Interface
    - PIO Mode 4 Transfers
    - 2x16-Bit Posted Write Butter and 1x32-Bit Read Prefetch Buffer
o   Plug-n-Play Port for Motherboard Devices
    - 3 Steerable DMA Channels
    - 1 Steerable Interrupt Lane (Plus 2 Steerable PCI Interrupts)
    - 1 Programmable Chip Select
o   Functionality of One 82C54 Timer
    - System Timer
    - Refresh Request
    - Speaker Tone Output
o   Functionality of Two 82C59 Interrupt Controllers
    - 14 Interrupts Supported
    - Independently Programmable for Edge/Level Sensitivity
o   X-Bus Peripheral Support
    - Chip Select Decode
    - Controls Lower X-Bus Data Byte Transceiver
o   Non-Maskable Interrupts (NMI)
    - PCI System Error Reporting
o   NAND Tree for Board-Level ATE Testing
o   176-Pin TOFP

**82371AB     PCI-TO-ISA / IDE Xcelerator 82371AB (PIIX4)     02/17/97...
**82374/82375 PCI-EISA Bridge (82374EB/82375EB, 374SB/375SB)   c:Mar93...
**82378       System I/O (SIO) (82378IB and 82378ZB)           c:Mar93...
**82379AB     System I/O-APIC (SIO.A)                           <Dec94...
**82380       32-bit DMA Controller w/ Integrated Peripherals 02/01/87...
**82380FB/AB  PCIset: 82380FB Mobile PCI-to-PCI Bridge(MPCI2) 02/17/97...
**82384       Clock Generator and Reset Interface                  c86...
**82385       32-bit Cache Controller for 80386               09/29/87...
**82385SX     32-bit Cache Controller for 80386SX             01/25/89...
**82395DX     High Performance Smart Cache                    06/18/90...
**82395SX     Smart Cache                                     12/17/90...
**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
***Notes:...
***Info:...
***Configurations:...
***Features:...
**
**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
***Info:...
***Configurations:...
***Features:...
**HTK340        "Shasta" 486 Chip Set                          c:Jun92...
**Support Chips:
**HT44          Secondary Cache                                c:Jun92...
**Other:...
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