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**450NX  (?)            06/29/98:
Chips:
[82454NX] (PXB) [82453NX] (MUX) 
[82452NX] (RCG) [82451NX] (MIOC) 
[82371EB] (PIIX4E),                            
CPUs:          Single/Dual/Quad P-II Xeon/P-III Xeon
DRAM Types:    FPM EDO 2-way Interleave 4-way Interleave
Mem Rows:      8
DRAM Density:  16Mbit 64Mbit
Max Mem:       8GB
ECC/Parity:    Both
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3


**?????  (Profusion)    c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
**SL9250  Page Mode Memory Controller (16/20MHz 8MB Max)        <oct88
***Info:...
***Versions:
SL9250

***Features:...
**SL9350  Page Mode Memory Controller (16/20/25MHz 16MB Max)    <oct88...
**Other:...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
**85C471/407     Green PC ISA-VLB 486 Single Chip                  <94
***Info:...
***Configurations:...
***Features:
o   Fully IBM PC/AT Compatible. 80486DX2/DX/SX/SL Enhanced, P24D/P24T/
    P24C, M6/M7 and Am486DXL/Am486DXL2 Single Chip Controller
o   Supports L1 Cache Writeback CPU (P24T/P24D/M6/M7) systems
o   Direct Mapped Cache Controller
    - Write-Back or Write-Through Schemes
    - Bank Interleave or Non-Interleave Cache
    - 0/1 Wait State Cache Write Hit
    - Flexible Cache Size : 32/64/128/256/512KB or 1MB
    - 7 bits or 8 bits TAG addresses
    - Flexible 2-1-1-1, 3-1-1-1, 2-2-2-2 and 3-2-2-2 Burst 
      Read/Write Timing
o   Fast Page Burst Mode DRAM Controller
    - 4 Banks up to 128MB of DRAMs
    - 256K/512K/1M/2M/4M/16MXN DRAM Type
    - Programmable DRAM Speed
    - Double-sided SIMMs
o   Two Programmable Non-Cacheable Regions (64KB-4MB area)
o   CAS before RAS Transparent DRAM Refresh
o   BIOS/Video ROM Cacheable
o   Shadow RAM in Increments of 32KB
    - Option to Disable Cache in Shadow RAM Area
o   256K Memory Relocation
o   8042 Emulation of Fast A2OGATE and CPU Reset
o   Supports Port 92h
o   Hardware/Software De-Turbo Switch
o   Supports Two VL-Bus Master
o   Supports Flash Memory
o   Supports Double/Single frequency input
o   CPU Operating frequency 0-100 MHz
o   Supports Power Management Mode
    - Supports the SMM and the SMI
    - CPU Stop Clock Function
    - Four Power Saving States
    - Long and Short System Timers
    - Supports the APM control
    - Supports Break Switch control
    - Power Saving also on non-SM] CPU
    - More System Event Monitoring and the Power Saving Control
o   AT Bus State Machine and Controller
o   Synchronous/Asynchronous AT Bus Clock
o   Programmable AT Bus Speed
    - l/2,l/3,1/4,l/5,1/6,1/8,l/10 of Input Clock or 7.159MHz
o   Programmable Wait State Generation
    - 1 or 2 Wait States for l6-Bit Transfers
    - 4 or 5 Wait States for 8-Bit Transfers
o   Programmable I/O Recovery Time
o   Programmable driving current for the DRAM and the ISA bus signals
o   32-Bit Data Buffer Between CPU and AT System
o   Data Conversion and Swapping Logic for 32-/16-/8-Bit Transfers 
    During CPU and DMA Cycles
o   Data Latches for AT Read Cycles
o   Parity Generation and Detection Logic
o   Port B Register and NMI Logic
o   Integrated Peripheral Controllers
    - 8259A x2 / 8237x2 / 8254 / 74LS612
o   387/487SX and Weitek 3167/4167 Coprocessors Interface
o   208-Pin PQFP
o   0.8nm Low Power CMOS Technology

**85C496/497     486-VIP 486 Green PC VESA/ISA/PCI Chipset         <95...
**85C501/502/503 Pentium/P54C PCI/ISA Chipset                <01/09/95...
**5101/5102/5103 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5120           Pentium PCI/ISA Chipset (Mobile)            <01/28/97...
**5501/5502/5503 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5511/5512/5513 Pentium PCI/ISA                             <06/14/95...
**5571           (Trinity) Pentium PCI/ISA Chipset (75MHz)   <12/09/96...
**5581/5582      (Jessie)  Pentium PCI/ISA Chipset (75MHz)   <04/15/97...
**5591/5592/5595 (David)   Pentium PCI A.G.P. Chipset        <01/09/98...
**5596/5513      (Genesis) Pentium PCI Chipset               <03/26/96...
**5597/5598      (Jedi)    Pentium PCI/ISA Chipset           <04/15/97...
**530/5595       (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**55x            SoC (System-on-chip)                        <03/14/02...
**
**Support chips:
**85C206     Integrated Peripheral Controller [no datasheet]         ?...
**5595       Pentium PCI System I/O                          <12/24/97...
**950        LPC I/O                                         <07/16/99...
**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
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*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...