AMERICAN MEGATRENDS, INC.
=========================

   418 MEGARAID (2-CHANNEL VERSION)

   428 MEGARAID (2-CHANNEL VERSION)

   MEGARAID ULTRA

   Processor               Intel i960CA RISC                      
   Processor Speed         33MHz                                  
   Maximum Onboard Memory  128MB DRAM (MegaRaid 418 and 428)      
                                                                  
                           32MB DRAM (MegaRaid Ultra)             
   Hard Drives supported   Up to 30 SCSI-2 Wide and Fast devices  
   Floppy drives supported None                                   
   I/O Options             Tone generator                         
   Data Bus                32-bit PCI                             
   Card Size               Full-length, full-height card          
   RAID levels supported   0,1,3,5,30 and 50                      

<gopher://bitreich.org/I/th99/c/A-B/21015-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 4-pin connector - |    J3    | 26--pin          |   J13    |
   | auxiliary         |          | connector -      |          |
   | TermPOWER         |          | fault bus        |          |
   |-------------------+----------+------------------+----------|
   | 68-pin SCSI       |    J4    | 9--pin serial    |   J15    |
   | channel 1         |          | port - internal  |          |
   | connector -       |          |                  |          |
   | internal          |          | (optional - not  |          |
   |                   |          | on all models)   |          |
   |-------------------+----------+------------------+----------|
   | 68-pin SCSI       |    J5    | 8-pin connector  |   J19    |
   | channel 2         |          | - cache battery  |          |
   | connector -       |          | backup           |          |
   | internal          |          |                  |          |
   |-------------------+----------+------------------+----------|
   | 50-pin SCSI       |    J8    | 20-pin connector |   J21    |
   | channel 1         |          | - cache battery  |          |
   | connector -       |          | backup           |          |
   | internal          |          |                  |          |
   |-------------------+----------+------------------+----------|
   | 4-pin connector - |   J10    | 68-pin SCSI      |   J26    |
   | drive active LED  |          | channel 2        |          |
   |                   |          | connector -      |          |
   |                   |          | external         |          |
   |-------------------+----------+------------------+----------|
   | 50-pin SCSI       |   J11    | 68-pin SCSI      |   J27    |
   | channel 2         |          | channel 1        |          |
   | connector -       |          | connector -      |          |
   | internal          |          | external         |          |
   |-------------------+----------+------------------+----------|
   | 2-pin connector - |   J12    |                  |          |
   | dirty cache LED   |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | PCI expansion BIOS enabled         |  J2   |  Closed   |
   |---+------------------------------------+-------+-----------|
   |   | PCI expansion BIOS disabled        |  J2   |   Open    |
   |---+------------------------------------+-------+-----------|
   |>> | Controller chipset is other than   |  J28  | Pins 1 &  |
   |   | Intel Triton (see note below)      |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Controller chipset is Intel Triton |  J28  | Pins 2 &  |
   |   |                                    |       | 3 closed  |
   |------------------------------------------------------------|
   | Note: Jumper J28 is present on model 418 Rev. A only.      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            CHANNEL 1 TERMINATION POWER SETTINGS            |
   |------------------------------------------------------------|
   |                      Setting                       |  J20  |
   |----------------------------------------------------+-------|
   |>> | TERMPOWER from PCI bus to Channel 1            | 1 & 2 |
   |---+------------------------------------------------+-------|
   |   | TERMPOWER from auxiliary power source to       | 2 & 3 |
   |   | Channel 1                                      |       |
   |---+------------------------------------------------+-------|
   |   | TERMPOWER from SCSI bus to Channel 1           | Open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            CHANNEL 2 TERMINATION POWER SETTINGS            |
   |------------------------------------------------------------|
   |                      Setting                       |  J17  |
   |----------------------------------------------------+-------|
   |>> | TERMPOWER from PCI bus to Channel 2            | 1 & 2 |
   |---+------------------------------------------------+-------|
   |   | TERMPOWER from auxiliary power source to       | 2 & 3 |
   |   | Channel 2                                      |       |
   |---+------------------------------------------------+-------|
   |   | TERMPOWER from SCSI bus to Channel 2           | Open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |        Bank 0         |        Bank 1         |
   |------------+-----------------------+-----------------------|
   |    4MB     |     (1) 1MB x 36      |         None          |
   |------------+-----------------------+-----------------------|
   |    8MB     |     (1) 1MB x 36      |     (1) 1MB x 36      |
   |------------+-----------------------+-----------------------|
   |    16MB    |     (1) 4MB x 36      |         None          |
   |------------+-----------------------+-----------------------|
   |    32MB    |     (1) 4MB x 36      |     (1) 4MB x 36      |
   |------------+-----------------------+-----------------------|
   |    64MB    |     (1) 16MB x 36     |         None          |
   |------------+-----------------------+-----------------------|
   |    128B    |     (1) 16MB x 36     |     (1) 16MB x 36     |
   |------------------------------------------------------------|
   | Note: The maximum cache on the MegaRaid Ultra is 32MB.     |
   +------------------------------------------------------------+