AMERICAN MEGATRENDS, INC. ========================= ATLAS PCI - II Processor Pentium Processor Speed 75/90/100/120/133MHz Chip Set Unidentified Video Chip Set None Maximum Onboard 256MB DRAM (EDO supported) Memory Maximum Video None Memory Cache 256/512/1024KB BIOS AMI Dimensions 254mm x 203mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), green VGA interface, cache slot NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |-------------------+----------+------------------+----------| | IDE interface 2 | J1 | Green PC | J27 | | | | connector | | |-------------------+----------+------------------+----------| | Serial port 1 | J3 | Reset switch | J29 | |-------------------+----------+------------------+----------| | Serial port 2 | J4 | Turbo LED | J33 | |-------------------+----------+------------------+----------| | Parallel port | J6 | IDE interface | J34 | | | | LED | | |-------------------+----------+------------------+----------| | Floppy drive | J7 | Green VGA | J42 | | interface | | interface | | |-------------------+----------+------------------+----------| | IDE interface 1 | J8 | Chassis fan | J46 | | | | power | | |-------------------+----------+------------------+----------| | PS/2 mouse | J13 | 32-bit PCI slots | PC1 - | | interface | | | PC4 | |-------------------+----------+------------------+----------| | Power LED & | J19 | Cache slot | SL1 | | keylock | | | | |-------------------+----------+------------------+----------| | Speaker | J22 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |-------------------------------------+-------+--------------| | | Jumper information unidentified | J20 | N/A | |---+---------------------------------+-------+--------------| | | Jumper information unidentified | J31 | N/A | |---+---------------------------------+-------+--------------| |>> | PS/2 mouse IRQ12 enabled | J38 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| | | PS/2 mouse IRQ12 disabled | J38 | Pins 2 & 3 | | | | | closed | |---+---------------------------------+-------+--------------| | | Jumper information unidentified | J45 | N/A | |---+---------------------------------+-------+--------------| | | Jumper information unidentified | J47 | N/A | |---+---------------------------------+-------+--------------| | | Jumper information unidentified | J50 | N/A | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 2MB | (2) 256K x 36 | None | |------------------+--------------------+--------------------| | 4MB | (2) 512K x 36 | None | |------------------+--------------------+--------------------| | 4MB | (2) 256K x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 6MB | (2) 512K x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 6MB | (2) 256K x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 8MB | (2) 1M x 36 | None | |------------------+--------------------+--------------------| | 8MB | (2) 512K x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 10MB | (2) 1M x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 10MB | (2) 256K x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 12MB | (2) 1M x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 12MB | (2) 512K x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 16MB | (2) 2M x 36 | None | |------------------+--------------------+--------------------| | 16MB | (2) 1M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 18MB | (2) 2M x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 18MB | (2) 256K x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 20MB | (2) 2M x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 20MB | (2) 512K x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 24MB | (2) 2M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 24MB | (2) 1M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 32MB | (2) 4M x 36 | None | |------------------+--------------------+--------------------| | 32MB | (2) 2M x 36 | (2) 2M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 34MB | (2) 4M x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 34MB | (2) 256K x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 36MB | (2) 4M x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 36MB | (2) 512K x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 40MB | (2) 4M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 40MB | (2) 1M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 48MB | (2) 4M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 48MB | (2) 2M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 64MB | (2) 8M x 36 | None | |------------------+--------------------+--------------------| | 64MB | (2) 4M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 66MB | (2) 8M x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 66MB | (2) 256K x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 68MB | (2) 8M x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 68MB | (2) 512K x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 72MB | (2) 8M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 72MB | (2) 1M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 80MB | (2) 8M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 80MB | (2) 2M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 96MB | (2) 8M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 96MB | (2) 4M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 128MB | (2) 16M x 36 | None | |------------------+--------------------+--------------------| | 128MB | (2) 8M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 130MB | (2) 16M x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 132MB | (2) 16M x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 136MB | (2) 16M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 144MB | (2) 16M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 160MB | (2) 16M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 192MB | (2) 16M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 256MB | (2) 16M x 36 | (2) 16M x 36 | |------------------------------------------------------------| | Note: Board accepts EDO memory. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | SL1 | |------------------+--------------------+--------------------| | 256KB (A) | (8) 32K x 8 | Not installed | |------------------+--------------------+--------------------| | 256KB (B) | None | Installed | |------------------+--------------------+--------------------| | 512KB (A) | (8) 64K x 8 | Not installed | |------------------+--------------------+--------------------| | 512KB (B) | None | Installed | |------------------+--------------------+--------------------| | 1MB (C) | (8) 128K x 8 | Not installed | |------------------+--------------------+--------------------| | 1MB (C) | None | Installed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | J16 | J26 | J28 | |-----------+----------------+---------------+---------------| | 256KB (A) | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 256KB (B) | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 512KB (A) | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 512KB (B) | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 1MB (C) | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 1MB (C) | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE TYPE CONFIGURATION | |------------------------------------------------------------| | Setting | J30 | |------------------------------+-----------------------------| | SMT cache enabled | Pins 1 & 2 closed | |------------------------------+-----------------------------| | SMT cache disabled | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION | |------------------------------------------------------------| | Speed | J24 | J25 | J37 | J39 | |------------+------------+------------+---------+-----------| | 75MHz | Closed | Closed | Open | Open | |------------+------------+------------+---------+-----------| | 90MHz | Closed | Open | Open | Open | |------------+------------+------------+---------+-----------| | 100MHz | Open | Closed | Open | Open | |------------+------------+------------+---------+-----------| | 120MHz | Closed | Open | Open | Closed | |------------+------------+------------+---------+-----------| | 133MHz | Open | Closed | Open | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE SELECTION | |------------------------------------------------------------| | Type | J11 | |----------------------------+-------------------------------| | VR | Pins 1 & 2 closed | |----------------------------+-------------------------------| | VRE | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE SELECTION | |------------------------------------------------------------| | Voltage | J2 | J12 | J21 | |---------------------+------------+------------+------------| | From regulator | Open | 1 & 2, 3 & | 1 & 2, 3 & | | | | 4, 5 & 6 | 4, 5 & 6 | |---------------------+------------+------------+------------| | From regulator & | Open | 1 & 2, 3 & | Open | | VRM | | 4, 5 & 6 | | |---------------------+------------+------------+------------| | From 3.3v power | 1 & 2, 3 & | Open | 1 & 2, 3 & | | supply | 4, 5 & 6 | | 4, 5 & 6 | +------------------------------------------------------------+