(TXT) View Source
       
       # TEXAS INSTRUMENTS
       
          BUSINESS PRO-MLB1-2
       
          Processor         80286                                        
          Processor Speed   6/8/10/12/16/20MHz                           
          Chip Set          Texas Instruments                            
          Max. Onboard DRAM 640KB                                        
          Cache             None                                         
          BIOS              Texas Instruments                            
          Dimensions        220mm x 270mm                                
          I/O Options       Memory card, parallel port, serial port      
          NPU Options       80287                                        
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose              | Location | Purpose      | Location  |
          |----------------------+----------+--------------+-----------|
          | Expansion bus        |    J2    | 64KB module  | J18 & J19 |
          | connector            |          |              |           |
          |----------------------+----------+--------------+-----------|
          | Expansion RAM        |    J3    | 64KB module  | J16 & J17 |
          | interface connector  |          |              |           |
          |----------------------+----------+--------------+-----------|
          | Serial port          |    J8    | 256KB module | J14 & J15 |
          |----------------------+----------+--------------+-----------|
          | Parallel port        |    J9    | 256KB module | J16 & J17 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |          Function           | Jumper/Switch |   Position   |
          |-----------------------------+---------------+--------------|
          | » | Speaker select external |    E1 & E3    | Connected to |
          |   |                         |               |   speaker    |
          |---+-------------------------+---------------+--------------|
          |   | Speaker select monitor  |    E1 & E2    |    closed    |
          |---+-------------------------+---------------+--------------|
          | » | Factory configured - do |      F1       |     N/A      |
          |   | not alter               |               |              |
          |---+-------------------------+---------------+--------------|
          | » | Factory configured - do |      J1       |     N/A      |
          |   | not alter               |               |              |
          |---+-------------------------+---------------+--------------|
          | » | Monitor type select     | SW1/switch 1  |      on      |
          |   | color                   |               |              |
          |---+-------------------------+---------------+--------------|
          |   | Monitor type select     | SW1/switch 1  |     off      |
          |   | monochrome              |               |              |
          |---+-------------------------+---------------+--------------|
          | » | Parallel port select    | SW1/switch 2  |     off      |
          |   | LPT1                    |               |              |
          |---+-------------------------+---------------+--------------|
          |   | Parallel port select    | SW1/switch 2  |      on      |
          |   | LPT2                    |               |              |
          |---+-------------------------+---------------+--------------|
          | » | Serial port select COM1 | SW1/switch 3  |     off      |
          |---+-------------------------+---------------+--------------|
          |   | Serial port select COM2 | SW1/switch 3  |      on      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  |      Bank 0       |     Bank 1      | SW1/Switch 1 |
          |-------+-------------------+-----------------+--------------|
          | 512KB | (2) 256KB Modules |      NONE       |     off      |
          |-------+-------------------+-----------------+--------------|
          | 640KB | (2) 256KB Modules |    (2) 64KB     |      on      |
          |       |                   |     Modules     |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              MAIN LOGIC BOARD SELF-TEST LED’S              |
          |------------------------------------------------------------|
          | Green  | Yellow  | Blue  |      Item failed      | Message |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   On    |  On   |          CPU          |  None   |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   On    |  Off  |  8142 test keyboard   |  None   |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   Off   |  On   |   8254 Timer 1 test   |  0001   |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   Off   |  Off  |     ROM CRC check     |  0002   |
          |--------+---------+-------+-----------------------+---------|
          |  Off   |   On    |  On   |     CMOS RAM test     |  0003   |
          |--------+---------+-------+-----------------------+---------|
          |  Off   |   On    |  Off  |   Mem. refresh test   |  0004   |
          |--------+---------+-------+-----------------------+---------|
          |  Off   |   Off   |  On   |    0-256K RAM test    |  0005   |
          |--------+---------+-------+-----------------------+---------|
          |  Off   |   Off   |  Off  |    Turbo mode test    |  0006   |
          |--------+---------+-------+-----------------------+---------|
          |  Off   |   Off   |  Off  |  Turbo parity error   |  0008   |
          |--------+---------+-------+-----------------------+---------|
          |  Off   |   Off   |  On   | Nonturbo partiy error |  0008   |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   On    |  On   |       8259 test       |  0007   |
          |--------+---------+-------+-----------------------+---------|
          |  Off   |   Off   |  Off  | 8254 timer interrupt  |  0012   |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   On    |  Off  |  Protected mode test  |  0020   |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   Off   |  On   |   8254 timer 2 test   |  0001   |
          |--------+---------+-------+-----------------------+---------|
          |   On   |   Off   |  Off  |       DMA test        |  0051   |
          +------------------------------------------------------------+