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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...
**HT11          Single 286 AT Chip [no datasheet]               <Aug90
***Notes:...
**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...
*Western Digital...
**WD6500        CPU Core Logic for PS/2 386DX/486 Compatible       <90
***Notes:...
***Info:...
***Configurations:...
***Features:...
**WD7600A/LP/LV System Chip Set for 80286 or 80386SX         <11/25/91...
**WD7700/LP     System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD7855        System controller for 80386SX                <09/25/92...
**WD7900/LP/LV  System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD8110        System controller for 80386DX/486            <11/30/93
***Notes:...
***Info:...
***Configurations:...
***Features:
o   Interfaces with 80486SX, 80486SXLP, 80486DX, 80386SX and 80386DX
    CPU's
o   Operates at up to 33 MHz at 3.3 volts or 5 volts with the 
    80486SX/DX
o   Operates at up to 33 MHz with the 80386SX/DX
o   Supports single and double clock 80486SX/DX and Intel SL Enhanced 
    processors.

DRAM control:
o   Page Mode word interleaved, DRAM controller with support for 80486
    burst mode.
o   Supports 3-2-2-2 clock sequence, 9 CLKs with 16-byte line fill for
    a page hit DRAM read cycle at 33 MHz.
o   Optional 3-1-1-1 clock sequence, 6 CLKs with 16-byte line fill for
    static column mode DRAMs at CPU speeds of 16 MHz and 20 MHz
o   Zero Wait State writes at 16 MHz and 20 MHz to DRAMS for 
    80486SX/DX
o   One Wait State writes to DRAMs for 80386SX/DX
o   One Wait State reads from DRAMs for Page Hit access for 80386SX/DX
o   Supports memory in five DRAM banks for a maximum of 256 Mbytes,
    using 256Kbit, 1 Mbit, 4 Mbit and 16 Mbit DRAMs and special DRAMs 
    such as 512K by 9, 1M by 18 and 2M by 9.
o   Supports major DRAM standards, including Asymmetrical DRAMs Static 
    Column DRAMs and 88-pin DRAM cards.
o   Self-adjusting output drivers minimize output rise/fall time 
    variations and reduce EMI and ground noise.
o   DRAM address multiplexer capable of driving 450 pF with adjustable
    strength drivers.
o   Features CAS before RAS refresh and slow refresh for low power.
o   Supports slow refresh and self refresh DRAMs at 120 us.
o   I/O mapping for board testability
o   32-bit direct interface with internal parity generation and 
    checking with no DRAM data buffers required.

Power Management:
o   Low power 0.9 micron CMOS technology
o   Provides power control with suspend and resume mode operations.
o   3 volt suspend to hard disk and Hibernation.
o   Sleep Mode provides:
    - Stop clock for static CPU for power saving.
    - Processor power down.
o   Provides automatic processor clock switching for 80386.
o   Automatic CPU speedup (AutoFast).
    - Clock Scaling
    - Clock Throttling
o   Supports multiple CPU speeds.
o   Supports System Management Interrupt (SMI) for efficient power 
    management.
o   Provides peripheral and I/O power control with trapping on I/O 
    address ranges for SMI operations.
o   Supports a fully programmable 16-bit decode.
o   Provides System Activity Monitor (SAM) for power management.
o   Stop DMA clock.
o   3.3V low voltage operation with on-chip translators for 5 volt AT 
    bus 
    (split rail operation).
o   3 volt and 5 volt mixed mode.

Chip Set Features:
o   High speed DMA.
o   Three fully programmable chip selects with PMC timers.
o   Built in Immunizer for virus protection.
o   Connects directly to the AT Data Bus SD(15:00).
o   Supports a Video Local Bus Interface (VLBI) for a 32-bit Video 
    Graphic Array (VGA) interface.
o   Bank switched BIOS ROM up to 512 KB.

**
**Support Chips:
**WD76C20x   Floppy, RTC, IDE and Support Logic Device       <11/25/91...
**WD76C30x   Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91...
**WD7615     Desktop Buffer Manager                          <04/15/92...
**WD7625     Desktop Buffer Manager                          <10/01/92...
**WD8120LV   Super I/O [no datasheet]                                ?
**Other Chips:...
*Winbond...
*ZyMOS...
*General Sources:...

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