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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...
**GCK181        Universal PS/2 Chip Set                        c:Mar89
***Info:
The GCK181  product family  provides a universal  engineering platform
for PS/2 compatible systems using  the Intel 80286, 80386, and 80386SX
microprocessors. This  chip set introduces the  most highly integrated
solution for  manufacturing high performance  PS/2 compatible computer
systems.

The GC181 CPU/Bus Controller initiates and controls all bus cycles. It
controls the interface to the Micro Channel, address and data buffers,
CPU,  DMA  and Memory  Controllers.   Full  Micro  Channel support  is
provided including Matched Memory  Cycles and all timing requirements.
This  device  also  integrates  reset  control  and  clock  generation
logic. It is packaged in a 68 pin PLCC.

The GC182  Memory Controller interfaces  the CPU and Micro  Channel to
System DRAM. Four  DRAM chip sizes are supported:  lMxl, 1Mx4, 256kx1,
256Kx4.   These can  be configured  to 8  MBytes  of interleaved/paged
memory. Four memory modes are selectable to meet IBM Model 50/60/70/80
memory requirements.   Zero wait state  page mode is achievable  at 20
MHz with 80ns  DRAMs. Package type is 120 pin  PQFP (plastic quad flat
pack).

The  GC183  DMA Controller  provides  8  DMA  channels, supporting  24
address bits and 8 or 16  bit data transfers. This device provides the
Micro  Channel with  15  levels  of bus  arbitration  and support  for
multiple  bus masters.  It also  contains DRAM  refresh logic  and NPU
support logic.  Package type is 160 pin PQFP.

The GC184 Address/Data Buffer integrates approximately 44 TTL packages
otherwise required  in at  P8/2 system.  It is packaged  in a  160 pin
PQFP.

The GC186 Peripheral Controller  interfaces peripherals with the Micro
Channel. It supports 15  interrupt channels, the refresh rate counter,
and three programmable timers. It  also contains PS/2 POS Registers, a
PS/2  and AT  compatible  parallel port,  address  decodes for  serial
ports, floppy  disk, keyboard, real  time clock and CMOS  RAM. Package
type is 160 pin PQFP

***Configurations:...
***Features:...
**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:
HT209D   VGA
HT216-32 Local Bus VGA Controller

*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
**UM82C***     (IBM/INTEL Direct replacement)                      c87
Note:  Dates vary  for when  these  chips were  first available.   Two
databooks have been used one from  '86 the other from '91. Not all the
chips  are  listed  in  the  '86  databook, the  date  of  '87  is  an
assumption.

PC/XT:
IBM:	      UMC:	  Desc:
Intel 8284    UM82C84A    25MHz CMOS Clock Generator and Driver
Intel 8288    UM82C88     Bus Controller
Intel 8259    UM8259A     Programmable Interrupt Controller also UM82C59A-2 (CMOS version)
Intel 8237    UM8237A     3-5MHz Programmable DMA Controller (DMAC)
Intel 8253    UM8253*2    2.6-5MHz Programmable Interval Timer
Intel 8255    UM82C55A*   Programmable Peripheral Interface

Note: *  indicates: possible  compatibility, datasheet does  not state
      explicitly. YMMV.

Note: *2  indicates:   The   UM8253   can   be   replaced   with   the
      UM82C54/-2. The datasheet says it is a superset of the 8253, and
      works up to 10MHz. Also it's compatible with the 8254.  AT: IBM:
      UMC: Desc: Intel 82284  UM82C284* 10-12.5MHz Clock Generator and
      Ready Interface Intel 82288  UM82C288* 10-12.5MHz Bus Controller
      Intel 8254  UM82C54/-2 8-10MHz CMOS Programmable  Interval Timer
      Intel  8259  UM8259A   Programmable  Interrupt  Controller  also
      UM82C59A-2 (CMOS version) Intel 8237 UM8237A 3-5MHz Programmable
      DMA Controller (DMAC) 74LS612 UM74HCT612* Memory Mapper MC146818
      RTC  UM82C6818* Real-Time  Clock (RTC)  Intel 8047  ??  Keyboard
      Controller

Note: *  indicates: possible  compatibility, datasheet does  not state
explicitly. YMMV.

**UM82C088     PC/XT Integration Chip                              <91...
**UM82C230     286AT MORTAR Chip Set                               <91...
**UM82C210     386SX/286 AT Chip Set                               <91...
**UM82C3xx     Twinstar & UM82C336F/N & UM82C39x [no datasheet]      ?...
**UM82C380     386 HEAT PC/AT Chip Set                             <91...
**UM82C480     386/486 PC Chip Set                                 c91...
**UM82C493/491 ??????????????? [no datasheet]                        ?...
**UM8498/8496  486 VL Chipset  "Super Energy Star Green"[no dsheet]c94...
**UM8881/8886  HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8890       Pentium chipset [no datasheet]                        ?...
**
**Support Chips:
**UM82152      Cache Controller (AUStek A38152 clone)              <91...
**UM82C852     Multi I/O For XT                                    <91...
**UM82C206     Integrated Peripheral Controller                    <91...
**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...

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