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**M1541/42/33/43 Aladdin V & V+    50-100MHz                         ?
***Info:...
***Configurations:...
***Features:...
**M1561/43/35D   Aladdin 7 ArtX    [no datasheet, some info]  11/08/99...
**M6117          386SX Single Chip PC                              <97...
**
**Support Chips:
**M1535/D        South Bridge                                        ?...
**
**May not exist:...
**Later Chipsets:...
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*AMD . . . . . . . [no datasheets, some info]...
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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...
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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
**85C496/497     486-VIP 486 Green PC VESA/ISA/PCI Chipset         <95
***Info:
The SiS 486-VIP (VESA/ISA/PCI) chips are two-chip solution ideally for
Intel's 80486, SL Enhanced 486, P24D/P24T/DX4 CPU, AMD's 486, Enhanced
Am486 and Cyrix's Cx486 (M7)/Cx 5x86 CPU based on green AT system.  By
supporting the most popular  industrial standard system interfaces, it
provides flexible configurations for system design and applications.

The SiS85C496  PCI & CPU  Memory Controller (PCM) integrates  the Host
Bridge (Host  Interface), the cache  and main memory  DRAM Controller,
the PCI Bridge, the built-in IDE Controller, and the FS-Link Bus (Fast
Slow  Link Bus). It  provides the  address paths  and bus  control for
transfers among  the Host  (CPU/L1 cache), main  memory (L2  cache and
DRAM),  the  Peripheral  Component  Interconnect (PCI)  Bus,  and  the
FS-Link Bus.  The L2  cache controller supports both write-through and
write-back cache policies  and cache sizes up to  1 MBytes.  The cache
memory  can be  built  using standard  asynchronous  SRAMs.  The  main
memory DRAM controller  interfaces DRAM to the Host  Bus, PCI Bus, and
FS-Link Bus. Up to eight single sided SIMMs or four double sided SIMMs
provide a maximum  of 255 MBytes of main  memory.  The installation of
DRAM SIMMs is  "Table-Free", which allows the SIMMs  be installed into
any slot  location and any  combinations.  The built-in IDE  hard disk
controller  allows CPU accessing  hard disk  and also  provides higher
system integration with  lower system cost. The 85C496  is intended to
be used with the SiS85C497 which  is a AT Bus Controller with built-in
206 controller.

The  SiS85C497 AT  Bus  Controller and  Megacells  (ATM) provides  the
interface between  PCI/CPU/Memory Bus (fast  machine) and the  ISA Bus
(slow machine).  It  also integrates many of the  common I/O functions
in today's  ISA based  PC systems.  The  85C497 comprises  the FS-Link
interface  (Fast-Slow  Link  interface),  ISA  bus  controller  ,  DMA
controller and  data buffers to isolate  the FS-Link Bus  from the ISA
Bus  and to  enhance performance.   It  also integrates  a 14  channel
edge/level  interrupt  controller, refresh  controller,  a 8-bit  BIOS
timer, three programmable timer/counters, non-maskable-interrupt (NMI)
control  logic, Power  Management  Unit,  and RTC.  Figure  1 .1  [see
datasheet] shows the system block diagram.


***Configurations:...
***Features:
o   Host Bus
    - Supports Intel 486, P24D, P24T, DX4, SL
    - Enhanced 486, AMD 486, Enhanced Am486, and Cyrix M7/Cx 5x86
      in 25/33/40/50 Mhz, 5V CPU.
o   VESA Bus Slave
    - Supports VESA Bus Specification Rev. 2.0p with Local Device 
      Target only.
o   PCI Local Bus
    - Supports PCI Bus Specification Rev. 2.0 with up to 4 PCI Masters
    - Implements 3 Level Post Write Buffer for CPU write PCI Target 
      Memory Cycle.
    - Supports Back to Back Single Memory Write to PCI Burst Write.
    - Supports PCI Interrupt Steering with Four PIRQ Inputs.
    - Supports PCI Master Burst Accesses On-Board Memory Up to 64 
      Double Word Long.
    - Supports Concurrency PCI Bus.
    - Snoop  Filter  and  Advanced  Snooping  for  Reducing CPU Snoops 
      During Sequential PCI Master Accesses On-Board Memory Cycles.
    - Supports PCI Bus PCI to PCI Bridge.
o   Supports L1 Cache Write Back CPU (P24T/P24D/M7/Enhanced Am486) 
    systems
o   Supports Cx 5x86 Linear Burst Order Mode.
o   L2 Cache Controller
    - Write-Back or Write-Through Schemes
    - Bank Interleave/Non-Interleave Cache Access
    - Cache Size: 64K/128K/256K/512K/1MB
    - 8 bit or 7 bit Tag (Combined Tag and Dirty SRAM) with  
      Direct-Mapped cache organization.
    - Optional Separate Dirty SRAM.
o   DRAM Controller
    - Supports 8 Banks Non-Interleaved Access for Single and Double 
      Sided SIMMs up to 255 MBytes.
    - Supports DRAM CAS Before RAS Refresh.
    - Supports "Table-Free" DRAM configuration.
    - Programmable driving current for the DRAM signals.
    - Supports Symmetrical and Asymmetrical DRAMs.
    - Supports 256K/512K/1M/2M/4M/8M/16M/32M xN Fast Page Mode and 
      EDO DRAM.
o   Built-In Local Bus IDE Interface
    - Supports Data Conversion for the Double Word Accessing
    - Supports Symmetry Configuration for Channel 1 and Channel  
      0,  PIO  Mode  IDE  Hard Disks.
    - Supports Mode 3 and above Timing.
    - Supports Individual Drive Timing Setting for Optimal Performance
    - Supports Posted Write Buffers and Pre-fetch Buffer.
    - Supports Primary IDE or Secondary IDE Addressing (1Fx/17x)
o   Fast-Slow Link Interface
    - Linkage to ISA Bridge by FS-Link Interface.
    - Fast Access to BIOS, ISA Memory Holes, and Interrupt Acknowledge 
      Cycle by FS-Link.
    - Two Programmable Non-Cacheable Regions 
    - Two Programmable PCI Memory Holes and One Programmable ISA 
      Memory Holes.
o   208-Pin PQFP
o   0.6um Low Power CMOS Technology

**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...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...

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