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**M1521/23       Aladdin III       50-66MHz                     <Nov96
***Info:...
***Configurations:...
***Features:
****M1521 System Controller:...
****M1523 PCI-to-ISA Bridge:
[features that only apply to the M1523B are surrounded by [] ]

o   Provides a bridge between the PCI bus and ISA bus
o   PCI interface
    - Supports PCI Master and Slave Interface
    - Supports PCI Master and Slave initiated termination
    - PCI specification 2.1 Compliant (Delay transaction support)
o   Buffers
    - 8-byte bidirectional Line Buffers are provided for DMA/ISA 
      Memory Read/Write cycles to PCI Bus.
    - 32-bit Posted Write Buffer is provided for PCI Memory Write and 
      I/O data write (for sound card) to ISA bus.
o   Provides steerable PCI interrupts for PCI device plug-and-play
    - Up to 8 PCI interrupts routing
    - Level to edge trigger transfer
o   Enhanced DMA Controller
    - Provides 7 programmable channels, 4 for 8-bit data size, 3 for 
      16-bit data size
    - 32-bit addressability
    - Provides Compatible DMA transfers
    - Provides Type F transfers
o   Interrupt Controller
    - Provides 14 interrupt channels
    - Independently programmable Level/Edge triggered channels
o   Counter/Timers
    - Provides 8254 compatible timers for System timer, Refresh 
      Request, Speaker Output use
o   Keyboard controller
    - Built-in PS2/AT Keyboard controller
    - The specific I/O is used to save the external TTL buffer
o  [Distributed DMA support                                         ]
   [- 7 DMA channels can be arbitrarily programmed as distributed   ]
   [  channel                                                       ]
o  [Serialized IRQ support                  ]
   [- Quiet /Continuous mode                ]
   [- 17 IRQ/Data frames                    ]
   [- Programmable START frame pulse width  ]
o   Plug-and-Play Port supports
    - 1 programmable chip select
    - 2 Steerable Interrupt Request lines
o   PMU interface
    - Supports CPU SMM mode, SMI feature
    - Supports programmable stop clock throttle
    - Supports the APM control
    - Provides External Suspend mode Switch/Turbo switch/Ring in 
      switch
    - Provides 4 system states for power saving (On, Doze, Standby, 
      Suspend)
    - Provides 3 timers from 1 second to 300 minutes to individually 
      monitor VGA, MODE, IN status
    - Supports RTC alarm wake up control
o   IDE interface
    - Built-in PCI IDE master controller
    - Supports PIO modes up to mode 5 timings, and multiword DMA mode 
      0, 1, 2
    - 8 x 32-bit pre-read & posted write buffers
    - Dedicated pins for ATA interface
o   Supports up to 256 KB ROM size decode
o  [Supports Universal Serial Bus interface ]
   [- Supports 2 USB ports                  ]
   [- OpenHCI specification 1.0a compliant  ]
o   208-pin PQFP package

**M1531/33/43    Aladdin IV & IV+  50-83.3MHz                <05/28/97...
**M1541/42/33/43 Aladdin V & V+    50-100MHz                         ?...
**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:...
**Other:...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82395SX     Smart Cache                                     12/17/90
***Notes:...
**82396SX     Smart Cache                                     12/17/90...
**82485       Turbo Cache (and 485Turbocache)                      c90...
**82489DX       Advanced Programmable Interrupt Controller    10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91...
**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...
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*Unresearched:...
*VIA...
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*General Sources:...