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**?????  (Profusion)    c:99
Chips:         
Memory Access Controller (MAC)  
Data Interface Buffer (DIB)
CPUs:          8x P-III Xeon Oct
DRAM Types:    SDRAM PC100 2-way Interleave dual channel
Max Mem:       32GB
ECC/Parity:    ECC
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3 PCI-66/64



**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...
**VT82C580VPX  Apollo VPX, VPX/97, Pentium with 66/75MHz Bus <01/09/97
***Notes:...
***Info:...
***Configurations:...
***Features:...
**VT82C590     Apollo VP2, VP2/97, Single-Chip Pentium 66MHz <01/10/97...
**VT82C597/AT  Apollo VP3, Single-Chip for Pentium with AGP  <10/03/97...
**VT82C598MVP  Apollo MVP3,Single-Chip 66/75/83/100MHz & AGP <09/22/97...
**VT8501       Apollo MVP4,Single-Chip 66-100MHz & AGP       <11/04/98...
**VT82C680     Apollo P6, Pentium-Pro Chip Set               <08/30/96...
**Support chips:
**VT82C505     Pentium/486 VL to PCI Bridge                  <05/30/94...
**VT82C586/A/B PCI Integrated Peripheral Controller          <10/13/96
***Info:
The VT82C586A  PIPC (PCI Integrated  Peripheral Controller) is  a high
integration,  high  performance  and  high compatibility  device  that
supports Intel and non-Intel based processor to PCI bus bridge to make
a complete  Microsoft PC97 compliant  PCI/ISA system.  In  addition to
complete  ISA  extension  bus  functionality, the  VT82C586A  includes
standard intelligent peripheral controllers:

a) Master  mode enhanced IDE  controller with dual channel  DMA engine
and  interlaced dual  channel commands.   Dedicated FIFO  coupled with
scatter  and  gather master  mode  operation  allows high  performance
transfers between  PCI and IDE  devices.  In addition to  standard PIO
and  DMA mode  operation,  the VT82C586A  also  supports the  emerging
UltraDMA-33  standard to  allow  reliable data  transfer  rates up  to
33MB/sec  throughput.   The  IDE  controller  is  SFF-8038i  v1.0  and
Microsoft Windows-95 compliant.

b) Universal Serial Bus controller  that is USB v1.0 and Universal HCI
v1.1 compliant.  The VT82C586A includes the root hub with two function
ports with integrated physical layer transceivers.  The USB controller
allows hot  plug and play  and isochronous peripherals to  be inserted
into the  system with universal  driver support.  The  controller also
implements legacy  keyboard and mouse support so  that legacy software
can run transparently in a non-USB-aware operating system environment.

c)  Keyboard controller with PS2 mouse support.

d) Real  Time Clock with 128  byte extended CMOS.  In  addition to the
standard ISA  RTC functionality, the integrated RTC  also includes the
date alarm and other  enhancements for compatibility with the emerging
ACPI standard.

e)  Notebook-class  power  management  functionality  including  event
monitoring, CPU clock throttling (Intel processor protocol), power and
leakage control, hardware-  and software-based event handling, general
purpose  IO,  chip select  and  external  SMI.   The power  management
function supports legacy APM v1.2.

f) Plug and  Play controller that allows complete  steerability of all
PCI interrupts to any interrupt channel.  Two additional interrupt and
DMA channels are provided to allow plug and play and reconfigurability
of on-board peripherals for Windows 95 compliance.

The  VT82C586A also  enhances the  functionality of  the  standard ISA
peripherals.  The  integrated interrupt controller  supports both edge
and level triggered interrupts channel by channel.  The integrated DMA
controller supports type F DMA  in addition to standard ISA DMA modes.
Compliant  with  the  PCI-2.1  specification, the  VT82C586A  supports
delayed transactions so  that slower ISA peripherals do  not block the
traffic  of the  PCI  bus.  Special  circuitry  is built  in to  allow
concurrent operation  without causing dead  lock even in  a PCI-to-PCI
bridge environment The chip also includes four levels (doublewords) of
line  buffers from  the PCI  bus  to the  ISA bus  to further  enhance
overall system performance.

***Versions:...
***Features:...
**VT82C596/A   Mobile PCI Integrated Peripheral Controller   <11/05/97...
**VT82C686A/B  PCI Super-I/O Integrated Peripheral Ctrl.     <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...

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