4000 SX  (250-4900)               Settings              Faxback Doc. # 1523

┌──────────────────────────────────────────────────────────────────────────┐
│   Dip      Default     Note                                              │
│   Switch   Position                                                      │
├──────────────────────────────────────────────────────────────────────────┤
│   1        OFF         ON for special multi-frequency displays           │
│   2        OFF         ON for mono modes on color displays               │
│   3        OFF         not used                                          │
│   4        OFF         not used                                          │
│                                                                          │
│        The color/monochrome jumper on the main logic board has           │
│        been set to its color position E9-E10. If you ever remove         │
│        the VGA video display adapter and put a monochrome video          │
│        display adapter in its place, you need to reposition the          │
│        E9-E10 jumper to pins E8-E9.                                      │
├──────────────────────────────────────────────────────────────────────────┤
│ CONFIGURATION SETTINGS                                                   │
│                                                                          │
│   Configuration                    Jumper Setting/Dip Switch (S1)        │
├──────────────────────────────────────────────────────────────────────────┤
│   Monitor Type                                                           │
│      Color Monitor                   E9-E10                              │
│      Monochrome Monitor              E8-E9                               │
│                                                                          │
│   Bios Rom Type                                                          │
│                                                                          │
│      128K (16K x 8)                  E17-E18, E21-E22                    │
│      256K (32K x 8)                  E17-E18, E22-E23                    │
│      512K (64K x 8)                  E18-E19, E22-E23                    │
│                                                                          │
│   Local DRAM Mem. Exp. Adpt.                                             │
│                                                                          │
│      Local Mem. Disabled (8-16M)     E30-E31, E32-E33                    │
│      Local Mem. Enabled (8-16M)      E29-E30, E31-E32                    │
├──────────────────────────────────────────────────────────────────────────┤
│   On-Board Parallel Port                                                 │
│                                                                          │
│      Parallel Port Enabled           SW1 = ON                            │
│      Parallel Port Disabled          SW1 = OFF                           │
│      Parallel Port Address = Port 1  SW1 = ON                            │
│                                      SW2 = ON                            │
│      Parallel Port Int. = IRQ 7      E12-E13                             │
│      Parallel Port Address = Port 2  SW1 = ON                            │
│                                      SW2 = OFF                           │
│      Parallel Port Int. = IRQ 5      E11-E12                             │
│                                                                          │
│   On-Board Serial Port                                                   │
│                                                                          │
│      Serial Port Enabled             SW3 = ON                            │
│      Serial Port Disabled            SW3 = OFF                           │
│      Serial Port = Port 1            SW3 = ON                            │
│                                      SW4 = ON                            │
│      Serial Port Int. = IRQ 4        E15-E16                             │
│      Serial Port = Port 2            SW3 = ON                            │
│                                      SW4 = Off                           │
│      Serial Port Int. = IRQ 3        E14-E15                             │
├──────────────────────────────────────────────────────────────────────────┤
│ On-Board Floppy Port                                                     │
│      On-Board Floppy Enabled         SW5 = ON                            │
│      On-Board Floppy Disabled        SW5 = OFF                           │
│      Floppy = Primary Port           SW5 = ON                            │
│                                      SW6 = ON                            │
│      Floppy = Secondary Port         SW5 = ON                            │
│                                      SW6 = OFF                           │
│      Primary Port                    SW6 = ON                            │
│      Secondary Port                  SW6 = OFF                           │
│                                                                          │
│ On-Board Hard Disk Interface                                             │
│      IDE Interface Enabled           SW7 = ON                            │
│      IDE Interface Disabled          SW7 = OFF                           │
│      IDE Primary Port Enabled        SW7 = ON                            │
│                                      SW8 = ON                            │
│      IDE Secondary Port Enabled      SW7 = ON                            │
│                                      SW8 = OFF                           │
│      IRQ 14 Jumper (standard)        E6-E7                               │
│      IRQ 14 Jumper (non-standard)    E5-E6                               │
│      IOCHRDY Jumper (standard)       E3-E4 (installed)                   │
│      DIAG Jumper (standard)          E1-E2 (not installed)               │
└──────────────────────────────────────────────────────────────────────────┘

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