ATC/UNITRON COMPUTER & COMPUTER PARTS ===================================== 486AL Processor CX486M6/CX486M7/AM486SXL/AM486SX(PLUS)/80486SX/AM486DXL/ 80486DX/ 80486DX2/AM486DX4(PLUS)/80486DX4/P23S/P24D/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/100(internal)/ Speed 120(internal)MHz Chip Set SIS Max. 128MB Onboard DRAM Cache 128/256/512/1024KB BIOS AMI/Award Dimensions 280mm x 220mm I/O 32-bit VESA local bus slot, floppy drive interface, green PC connector, IDE Options interface, parallel port, serial ports (2), VGA feature connector, VGA port, riser slot NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | VGA port | CN1 | Green PC | JP51 | | | | connector | | |------------------+----------+-------------------+----------| | Parallel port | CN2 | Green PC | JP59 | | | | connector | | |------------------+----------+-------------------+----------| | Serial port 2 | CN3 | Turbo LED | JP61 | | | | | pins 1 & | | | | | 2 | |------------------+----------+-------------------+----------| | Serial port 1 | CN4 | Turbo switch | JP61 | | | | | pins 3 & | | | | | 4 | |------------------+----------+-------------------+----------| | VGA feature | CN5 | Reset switch | JP62 | | connector | | | | |------------------+----------+-------------------+----------| | IDE interface | CN6 | Speaker | JP63 | |------------------+----------+-------------------+----------| | Floppy drive | CN7 | Power LED & | JP64 | | interface | | keylock | | |------------------+----------+-------------------+----------| | Power LED | J1 | Riser Card | SL1 | |------------------+----------+-------------------+----------| | External battery | JP16 | 32-bit VESA local | SL2 | | | | bus slot | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| | | PS/2 mouse enabled | JP3 | Closed | |---+----------------------------------+--------+------------| | | PS/2 mouse disabled | JP3 | Open | |---+----------------------------------+--------+------------| |>> | VGA BIOS enabled | JP7 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | VGA BIOS disabled | JP7 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP8 | N/A | | | alter | | | |---+----------------------------------+--------+------------| | | Monitor type select color | JP9 | Closed | |---+----------------------------------+--------+------------| | | Monitor type select monochrome | JP9 | Open | |---+----------------------------------+--------+------------| |>> | CMOS memory normal operation | JP11 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | CMOS memory clear | JP11 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | ECP DRQ enabled | JP12 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | ECP DRQ disabled | JP12 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | ECP A10 enabled | JP15 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | ECP A10 disabled | JP15 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Parallel port IRQ select IRQ7 | JP17 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | Parallel port IRQ select IRQ5 | JP17 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Serial port IRQ select IRQ4 | JP18 | pins 3 & 4 | | | | | closed | |---+----------------------------------+--------+------------| | | Serial port IRQ select IRQ3 | JP18 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP24 | N/A | | | alter | | | |---+----------------------------------+--------+------------| | | CPU voltage regulator type | JP25 | pins 1 & 2 | | | select LT1085 | | closed | |---+----------------------------------+--------+------------| | | CPU voltage regulator type | JP25 | pins 2 & 3 | | | select LT1085-3.3 | | closed | |---+----------------------------------+--------+------------| | | CPU voltage regulator type | JP27 | Closed | | | select auto | | | |---+----------------------------------+--------+------------| | | CPU voltage regulator type | JP27 | Open | | | select manual | | | |---+----------------------------------+--------+------------| |>> | IDE interface enabled | JP32 | Open | |---+----------------------------------+--------+------------| | | IDE interface disabled | JP32 | Closed | |---+----------------------------------+--------+------------| |>> | CPU clock = CLKIN | JP47 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | CPU clock delayed for CLKIN | JP47 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Internal clock select CLKIN | JP50 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | Internal clock select 1/2 CLKIN | JP50 | pins 2 & 3 | | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION 1 | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 1MB | (4) 256K x 9 | NONE | NONE | |------------+---------------+---------------+---------------| | 2MB | (4) 256K x 9 | (1) 256K x 36 | NONE | |------------+---------------+---------------+---------------| | 4MB | (4) 1M x 9 | NONE | NONE | |------------+---------------+---------------+---------------| | 5MB | (4) 256K x 9 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 6MB | (4) 256K x 9 | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 8MB | (4) 1M x 9 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 16MB | (4) 4M x 9 | NONE | NONE | |------------+---------------+---------------+---------------| | 17MB | (4) 256K x 9 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 18MB | (4) 256K x 9 | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 20MB | (4) 1M x 9 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 24MB | (4) 1M x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 32MB | (4) 4M x 9 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 36MB | (4) 1M x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 64MB | (4) 16M x 9 | NONE | NONE | |------------+---------------+---------------+---------------| | 65MB | (4) 256K x 9 | (1) 16M x 36 | NONE | |------------+---------------+---------------+---------------| | 68MB | (4) 1M x 9 | (1) 16M x 36 | NONE | |------------+---------------+---------------+---------------| | 72MB | (4) 1M x 9 | (1) 1M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 80MB | (4) 4M x 9 | (1) 16M x 36 | NONE | |------------+---------------+---------------+---------------| | 96MB | (4) 4M x 9 | (1) 4M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 128MB | (4) 16M x 9 | (1) 16M x 36 | NONE | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION 2 | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 1MB | NONE | (1) 256K x 36 | NONE | |------------+---------------+---------------+---------------| | 2MB | NONE | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 4MB | NONE | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 5MB | NONE | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 6MB | (4) 1M x 9 | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 16MB | NONE | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 17MB | NONE | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 18MB | (4) 4M x 9 | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 20MB | NONE | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 24MB | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 32MB | NONE | (1) 8M x 36 | NONE | |------------+---------------+---------------+---------------| | 36MB | (4) 4M x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 36MB | NONE | (1) 1M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 48MB | NONE | (1) 4M x 36 | (1) 8M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION 2 (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 64MB | NONE | (1) 8M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 64MB | NONE | (1) 16M x 36 | NONE | |------------+---------------+---------------+---------------| | 65MB | NONE | (1) 256K x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 68MB | NONE | (1) 1M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 72MB | (4) 16M x 9 | (4) 1M x 9 | (4) 1M x 9 | |------------+---------------+---------------+---------------| | 80MB | NONE | (4) 4M x 9 | (4) 16M x 9 | |------------+---------------+---------------+---------------| | 96MB | (4) 16M x 9 | (4) 4M x 9 | (4) 4M x 9 | |------------+---------------+---------------+---------------| | 128MB | NONE | (4) 16M x 9 | (4) 16M x 9 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM JUMPER CONFIGURATION | |------------------------------------------------------------| | Configuration | JP54 | JP55 | JP56 | |---------------+------------------+------------+------------| | 1 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 2 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |--------------+---------------+---------------+-------------| | 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | |--------------+---------------+---------------+-------------| | 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | |--------------+---------------+---------------+-------------| | 256KB (B) | (4) 64K x 8 | NONE | (1) 32K x 8 | |--------------+---------------+---------------+-------------| | 512KB (A) | (4) 64K x 8 | (4) 64K x 8 | (1) 32K x 8 | |--------------+---------------+---------------+-------------| | 512KB (B) | (4) 128K x 8 | NONE | (1) 32K x 8 | |--------------+---------------+---------------+-------------| | 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 64K x 8 | |------------------------------------------------------------| | Note: The orientation of Banks 0 & 1 and TAG are | | unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP33 | JP34 | JP35 | JP36 | JP52 | JP53 | |-------+-------+-------+----------+---------+-------+-------| | 128KB | 1 & 2 | 1 & 2 | Any | Any | 1 & 2 | 1 & 2 | | | | | setting | setting | | | |-------+-------+-------+----------+---------+-------+-------| | 256KB | 2 & 3 | 2 & 3 | Any | Any | 1 & 2 | 2 & 3 | | (A) | | | setting | setting | | | |-------+-------+-------+----------+---------+-------+-------| | 256KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | | (B) | | | | | | | |-------+-------+-------+----------+---------+-------+-------| | 512KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | | (A) | | | | | | | |-------+-------+-------+----------+---------+-------+-------| | 512KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | | (B) | | | | | | | |-------+-------+-------+----------+---------+-------+-------| | 1MB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP19 | JP20 | JP21 | JP22 | JP23 | |-----------------+--------+--------+--------+-------+-------| | CX486M6 | N/A | 2 & 3 | 1 & 2 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | AM486SXL | 1 & 2 | N/A | 2 & 3 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | AM486SX(PLUS) | 4 & 5 | N/A | 1 & 2 | 2 & 3 | 2 & 3 | |-----------------+--------+--------+--------+-------+-------| | 80486SX | 1 & 2 | N/A | 1 & 2 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | AM486DXL | 1 & 2 | N/A | 2 & 3 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | CX486M7 | N/A | 2 & 3 | 1 & 2 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | 80486DX | 1 & 2 | N/A | 1 & 2 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | 80486DX2 | 1 & 2 | N/A | 1 & 2 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | AM486DX4(PLUS) | 4 & 5 | N/A | 1 & 2 | 2 & 3 | 2 & 3 | |-----------------+--------+--------+--------+-------+-------| | 80486DX4 | 1 & 2 | N/A | 1 & 2 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | P23S | 1 & 2 | N/A | 1 & 2 | 2 & 3 | N/A | |-----------------+--------+--------+--------+-------+-------| | P24D | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | |-----------------+--------+--------+--------+-------+-------| | P24T | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | N/A | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | JP38 | JP39 | JP40 | JP41 | JP42 | |----------------+-------+-------+---------+-------+---------| | CX486M6 | 2 & 3 | 2 & 3 | N/A | 1 & 2 | 2 & 3 | |----------------+-------+-------+---------+-------+---------| | AM486SXL | N/A | 3 & 4 | 1 & 2 | 3 & 4 | 2 & 3 | |----------------+-------+-------+---------+-------+---------| | AM486SX(PLUS) | 4 & 5 | N/A | N/A | 2 & 3 | 2 & 3 | |----------------+-------+-------+---------+-------+---------| | 80486SX | 4 & 5 | N/A | N/A | 2 & 3 | 2 & 3 | |----------------+-------+-------+---------+-------+---------| | AM486DXL | N/A | 3 & 4 | 1 & 2, | 3 & 4 | 1 & 2, | | | | | 3 & 4 | | 3 & 4 | |----------------+-------+-------+---------+-------+---------| | CX486M7 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2 | 1 & 2, | | | | | | | 3 & 4 | |----------------+-------+-------+---------+-------+---------| | 80486DX | 4 & 5 | N/A | 3 & 4 | 2 & 3 | 1 & 2, | | | | | | | 3 & 4 | |----------------+-------+-------+---------+-------+---------| | 80486DX2 | 4 & 5 | N/A | 3 & 4 | 2 & 3 | 1 & 2, | | | | | | | 3 & 4 | |----------------+-------+-------+---------+-------+---------| | AM486DX4(PLUS) | 4 & 5 | N/A | 3 & 4 | 2 & 3 | 1 & 2, | | | | | | | 3 & 4 | |----------------+-------+-------+---------+-------+---------| | 80486DX4 | 4 & 5 | N/A | 3 & 4 | 2 & 3 | 1 & 2, | | | | | | | 3 & 4 | |----------------+-------+-------+---------+-------+---------| | P23S | 4 & 5 | N/A | 3 & 4 | 2 & 3 | 2 & 3 | |----------------+-------+-------+---------+-------+---------| | P24D | 4 & 5 | N/A | 3 & 4 | 2 & 3 | 1 & 2, | | | | | | | 3 & 4 | |----------------+-------+-------+---------+-------+---------| | P24T | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2, | | | | | | | 3 & 4 | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | JP43 | JP44 | JP45 | JP46 | JP48 | JP49 | |-----------------+-------+------+------+------+------+------| | CX486M6 | N/A | N/A | 2 & | N/A | N/A | N/A | | | | | 3 | | | | |-----------------+-------+------+------+------+------+------| | AM486SXL | N/A | N/A | 4 & | N/A | N/A | N/A | | | | | 5 | | | | |-----------------+-------+------+------+------+------+------| | AM486SX(PLUS) | N/A | N/A | 3 & | N/A | N/A | N/A | | | | | 4 | | | | |-----------------+-------+------+------+------+------+------| | 80486SX | N/A | N/A | 3 & | N/A | 2 & | 1 & | | | | | 4 | | 3 | 2 | |-----------------+-------+------+------+------+------+------| | AM486DXL | N/A | N/A | 4 & | N/A | 1 & | 2 & | | | | | 5 | | 2 | 3 | |-----------------+-------+------+------+------+------+------| | CX486M7 | N/A | N/A | 2 & | N/A | 1 & | 2 & | | | | | 3 | | 2 | 3 | |-----------------+-------+------+------+------+------+------| | 80486DX | 2 & 3 | N/A | 3 & | N/A | 2 & | 1 & | | | | | 4 | | 3 | 2 | |-----------------+-------+------+------+------+------+------| | 80486DX2 | 2 & 3 | N/A | 3 & | N/A | 2 & | 1 & | | | | | 4 | | 3 | 2 | |-----------------+-------+------+------+------+------+------| | AM486DX4(PLUS) | 2 & 3 | N/A | 3 & | N/A | 1 & | 1 & | | | | | 4 | | 2 | 2 | |-----------------+-------+------+------+------+------+------| | 80486DX4 | 1 & 2 | N/A | 3 & | N/A | 2 & | 1 & | | | | | 4 | | 3 | 2 | |-----------------+-------+------+------+------+------+------| | P23S | N/A | N/A | 3 & | N/A | N/A | N/A | | | | | 4 | | | | |-----------------+-------+------+------+------+------+------| | P24D | 1 & | N/A | 1 & | N/A | 1 & | 1 & | | | 2, or | | 2, 3 | | 2 | 2 | | | 2 & 3 | | & 4 | | | | |-----------------+-------+------+------+------+------+------| | P24T | N/A | N/A | 3 & | 1 & | 1 & | 1 & | | | | | 4 | 2, | 2 | 2 | | | | | | or 2 | | | | | | | | & 3 | | | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | | This board also accepts SL-series CPUs & am486dxl2, but no | | jumper settings are listed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | JP37 | |----------------------------+-------------------------------| | 25MHz | pins 1 & 2, 5 & 6 closed | |----------------------------+-------------------------------| | 33MHz | pins 1 & 2, 3 & 4 closed | |----------------------------+-------------------------------| | 40MHz | pins 5 & 6 closed | |----------------------------+-------------------------------| | 50iMHz | pins 1 & 2, 5 & 6 closed | |----------------------------+-------------------------------| | 50MHz | pins 3 & 4 closed | |----------------------------+-------------------------------| | 66iMHz | pins 1 & 2, 3 & 4 closed | |----------------------------+-------------------------------| | 75iMHz | pins 1 & 2, 5 & 6 closed | |----------------------------+-------------------------------| | 80iMHz | pins 5 & 6 closed | |----------------------------+-------------------------------| | 100iMHz | pins 1 & 2, 3 & 4 closed | |----------------------------+-------------------------------| | 120iMHz | pins 5 & 6 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE CONFIGURATION | |------------------------------------------------------------| | Voltage | JP26 | |----------------------------+-------------------------------| | Auto detect | Open | |----------------------------+-------------------------------| | 3.3v | pins 2 & 3 closed | |----------------------------+-------------------------------| | 5v | pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VL BUS WAIT STATE CONFIGURATION | |------------------------------------------------------------| | Wait states | JP58 | |------------------------------+-----------------------------| |>> | 0 wait states | pins 1 & 2 closed | |---+--------------------------+-----------------------------| |>> | 1 wait state | pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VL BUS SPEED CONFIGURATION | |------------------------------------------------------------| | CPU speed | JP57 | |----------------------------+-------------------------------| |>> | <= 33MHz | pins 1 & 2 closed | |---+------------------------+-------------------------------| |>> | > 33MHz | pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DMA CONFIGURATION | |------------------------------------------------------------| | DMA | JP13 | JP14 | |------------------+--------------------+--------------------| |>> | DMA 1 | pins 2 & 3 closed | pins 2 & 3 closed | |---+--------------+--------------------+--------------------| |>> | DMA 3 | pins 1 & 2 closed | pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOPPY ENHANCED MODE CONFIGURATION | |------------------------------------------------------------| | Setting | JP28 | JP29 | |------------------------+-----------------+-----------------| |>> | Enabled | Closed | Closed | |----+-------------------+-----------------+-----------------| |>> | Disabled | Open | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | KEYBOARD CONFIGURATION | |------------------------------------------------------------| | Type | JP1 | JP2 | JP5 | JP6 | |------+--------+--------+-----------------+-----------------| | AT | Open | Open | pins 2 & 3 | pins 2 & 3 | | | | | closed | closed | |------+--------+--------+-----------------+-----------------| | PS/2 | Closed | Closed | pins 1 & 2 | pins 1 & 2 | | | | | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | MEDIA DETECT CONFIGURATION | |------------------------------------------------------------| | Setting | JP30 | JP31 | |------------------------+-----------------+-----------------| |>> | Enabled | Closed | Closed | |---+--------------------+-----------------+-----------------| |>> | Disabled | Open | Open | +------------------------------------------------------------+ +----------------------------------------------+ | MISCELLANEOUS TECHNICAL NOTE | |----------------------------------------------| | Note: The location of pin 1 is unidentified. | +----------------------------------------------+