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 [Image] 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 - S1/2 On 37F Parallel port address select 278 - S1/2 Off 37F » Serial port enabled S1/3 On Serial port disabled S1/3 Off » Serial port address select 3F8 - S1/4 On 3FF Serial port address select 2F8 - S1/4 Off 2FF » Parallel port unidirectional S1/5 On Parallel port bidirectional S1/5 Off » Floppy drive address select 3F0 - S1/6 On 3F7 Floppy drive address select 370 - S1/6 Off 377 » 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.