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**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91
***Notes:...
***Info:...
***Features:...
**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...
**
**Later chipsets (basic spec):
**440 series:...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
**Later Chipsets:
Info sourced from the very useful plasma-online.de:
http://www.plasma-online.de/index.html?content=http%3A//www.plasma-online.de/english/identify/picture/pcchips.html

Chipset name   | OEM of                    | used on mainboard
---------------+---------------------------+-----------------------------------------
HX Pro         | ALi M1521/M1523           |  
SX Pro         | SiS 530/5595              | M598
AGP Pro PC-100 | VIA VT82C598AT/VT82C596B  | M577
TX AGP Pro     | SiS 5591/5595/6326        |  
TX Two         | ALi M1531/M1543           | 
TX Pro         | ALi M1531/M1543           | M560, M575
TX Pro II      | SiS 5597/5598             | M571
TX Pro III     | VIA VT82C580VPX/VT82C586B | M573
TX Pro IV      | SiS 5591/5592             | M570
Top Gun        | ALi Aladdin IV+           | M565
VIA GRA        | VIA VT8501/VT82C596B      | M858LMR
VX Pro         | VIA VT82C580VP/VT82C586B  | 	 
VX Pro +       | VIA VT82C580VPX/VT82C586B | 	 
VX Pro II      | UTron / HiNT UT801X       |   		 
VX two         | VIA VT82C580VP/VT82C586B  | Amptron PM-8600A
VX two         | VIA VT82C580VPX/VT82C586B | Amptron PM-8600B
BXToo          | VIA Apollo Pro            | M760V, M761V
BXToo          | VIA VT82C693/VT82C686A    | M767V
BXPro          | SiS 600/5595              | M747
BXCel          | ALi M1621/M1543           | M726, M729
BXpert         | VIA VT82C691/VT82C596     |  
BXTel          | VIA Apollo Pro            | M730
Xcel 2000      | SiS 620/5595              | M741LMRT
Super TX       | SiS 5597/5598             | ASUS SP97-V, SP98-N, Jetway J-TX98R2
Super TX       | ALi M1531/M1543           | 
Super TX       | ALi M1541/M1543           | Biostar M5ALA, M5ALC, Pionex MBD-P5ABx
Super TX3      | SiS 5571                  | 	 
Super TX4 AGP  |                           | 	 
GFXcel         | SiS 630                   | 	 
GFXpro         | ALi M1631/M1535D          |  
T-Bird         | SiS730S                   | M810
---------------+---------------------------+----------------------------------------

*SIS...
**85C471/407     Green PC ISA-VLB 486 Single Chip                  <94
***Info:
The  SiS85C47l, single chip  controller supports  Intel's 80486DX2/DX/
SX/SL Enhanced,  P24D/P24T/P24C CPU,  Cyrix's Cx486S2 (M6/M7)  CPU and
AMD's Am486DXL/DXLZ CPU.

The Si885C471 is a high performance, 100% PC/AT compatible single chip
controller,  designed for  cached/non-cached P24D/P24T/P24C,  M6/M7 or
486 PC systems. The high integration of the powerful cache controller,
the DRAM controller, the CPU  interfaces, the bus controller, the data
buffers and the peripheral controllers provides an easy and economical
solution for compact board manufacturing.

In addition to supporting burst reads  for the cache line fills of the
CPU, the  SiS85C47l is  capable of accepting  burst write data  of the
CPU's internal  cache dirty line(s) during CPU  write-back cycles. The
support of the  CPU burst write cycle is  optional through the control
of the Configuration Registers.  The SiS85C471 supports the cache size
up to l MB and the DRAM size up to 128 MB.

The SiS85C471  has a built-in  cache controller which  supports direct
mapped write-through/write-back  cache. The programmable  AT-bus clock
supports are compatible with  AT-bus timing requirements for different
PC systems.

In  addition, the  local bus  interfaces, the  integration of  the DMA
Controllers, Interrupt Controllers and Timers/Counters are designed to
be a higher performance, more compact, and more cost-effective product
for  a P24D/PZ4T/PZ4C,  486SX/DX/DX2/SL-Enhanced, Am486DXL/DXLZ,  or a
Cx48682 (M6/M7) PC/AT system.

The  SiS85C47I  provides power  saving  features  to allow  a  system,
through the  control of BIOS, to  reduce the CPU clock  frequency from
50MHz down to 0 MHz(STOP CLOCK) when the system is idle.

To support the SL-Enhanced  486, M6/M7, P24D/P24T/P24C's Am486DXL/DXL2
STPCLK/SMI features,  the SiS85C47l also implements  the corresponding
logics to support STPCLK /SMI for power saving.

The  SiSSSC471  supports the  VL-Bus  applications  including (1)  CPU
accesses VL-Bus  targets, (2) VL-Bus master  mode, and (3)  DMA or ISA
master accesses VL-Bus targets.

The  SiS85C471  provides  flexible  ways  in  configuring  the  system
depending   on  whether   cache  or   VESA  local   bus   masters  are
supported. The  different configurations require  different numbers of
external components.


***Configurations:...
***Features:...
**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...
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