TANDY/RADIO SHACK
416 SX
| 
 Processor  | 
 80386SX  | 
| 
 Processor Speed  | 
 16MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Video Chip Set  | 
 Unidentified  | 
| 
 Maximum Onboard Memory  | 
 16MB (12MB on external memory card)  | 
| 
 Maximum Video Memory  | 
 Unidentified  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 393mm x 381mm  | 
| 
 I/O Options  | 
 Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA port, riser slot  | 
| 
 NPU Options  | 
 80387SX  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 PS/2 mouse port  | 
 CN1  | 
 IDE interface  | 
 CN6  | 
| 
 Serial port  | 
 CN2  | 
 Speaker  | 
 CN7  | 
| 
 Parallel port  | 
 CN3  | 
 Speaker  | 
 CN8  | 
| 
 VGA port  | 
 CN4  | 
 Riser slot  | 
 SL1  | 
| 
 Floppy drive interface  | 
 CN5  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 »  | 
 Factory configured - do not alter  | 
 J1  | 
 Closed  | 
| 
 Factory configured - do not alter  | 
 J2  | 
 Closed  | |
| 
 »  | 
 Monitor type select color  | 
 J3  | 
 Pins 2 & 3 closed  | 
| 
 Monitor type select monochrome  | 
 J3  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 Serial port IRQ select IRQ4  | 
 J4  | 
 Pins 2 & 3 closed  | 
| 
 Serial port IRQ select IRQ3  | 
 J4  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 Parallel port IRQ select IRQ7  | 
 J5  | 
 Pins 2 & 3 closed  | 
| 
 Parallel port IRQ select IRQ5  | 
 J5  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 On board video enabled  | 
 J6  | 
 Pins 2 & 3 closed  | 
| 
 On board video disabled  | 
 J6  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 Video IRQ disabled  | 
 J7  | 
 Pins 2 & 3 closed  | 
| 
 Video IRQ enabled  | 
 J7  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 NPU not installed  | 
 J8  | 
 Pins 2 & 3 closed  | 
| 
 NPU installed  | 
 J8  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 Parallel port enabled  | 
 S1/1  | 
 On  | 
| 
 Parallel port disabled  | 
 S1/1  | 
 Off  | |
| 
 »  | 
 Parallel port address select 378 - 37F  | 
 S1/2  | 
 On  | 
| 
 Parallel port address select 278 - 37F  | 
 S1/2  | 
 Off  | |
| 
 »  | 
 Serial port enabled  | 
 S1/3  | 
 On  | 
| 
 Serial port disabled  | 
 S1/3  | 
 Off  | |
| 
 »  | 
 Serial port address select 3F8 - 3FF  | 
 S1/4  | 
 On  | 
| 
 Serial port address select 2F8 - 2FF  | 
 S1/4  | 
 Off  | |
| 
 »  | 
 Parallel port unidirectional  | 
 S1/5  | 
 On  | 
| 
 Parallel port bidirectional  | 
 S1/5  | 
 Off  | |
| 
 »  | 
 Floppy drive address select 3F0 - 3F7  | 
 S1/6  | 
 On  | 
| 
 Floppy drive address select 370 - 377  | 
 S1/6  | 
 Off  | |
| 
 »  | 
 Smart drive port select primary  | 
 S1/7  | 
 On  | 
| 
 Smart drive port select secondary  | 
 S1/7  | 
 Off  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 1MB  | 
 (2) 256K x 9  | 
 (2) 256K x 9  | 
| 
 2MB  | 
 (2) 1M x 9  | 
 None  | 
| 
 4MB  | 
 (2) 1M x 9  | 
 (2) 1M x 9  | 
| 
 Note: The location of banks 0 & 1 are unidentified.  | ||
| 
 VIDEO MEMORY CONFIGURATION  | 
| 
 Note: The size, location and chip sizes for the video memory is unidentified.  |