AST RESEARCH, INC.
Bravo LC 486 (202480-XXX)
| 
 Processor  | 
 80486SX  | 
| 
 Processor Speed  | 
 25MHz  | 
| 
 Chip Set  | 
 AST  | 
| 
 Max. Onboard DRAM  | 
 64MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 AST  | 
| 
 Dimensions  | 
 254mm x 338mm  | 
| 
 I/O Options  | 
 Bus mouse port, CPU/Cache upgrade module, floppy drive interface, IDE interface, LAN module, parallel port, serial port (2), VGA port  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Serial port 2 (COM2)  | 
 J12  | 
 Floppy drive interface  | 
 J24  | 
| 
 Parallel port  | 
 J13  | 
 External speaker  | 
 J27  | 
| 
 Bus mouse port  | 
 J14  | 
 Fan power  | 
 J28  | 
| 
 LAN module  | 
 J15 & J16  | 
 Front panel switches & LEDs  | 
 J29  | 
| 
 Serial port 1 (COM1)  | 
 J17  | 
 Feature connector  | 
 J46  | 
| 
 VGA port  | 
 J18  | 
 CPU/Cache upgrade module  | 
 J50, J51, J52, J53  | 
| 
 VGA pass-through  | 
 J19  | 
 IDE interface LED  | 
 J100  | 
| 
 IDE interface  | 
 J22  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper/Switch  | 
 Position  | |
| » | 
 Factory configured - do not alter  | 
 E1  | 
 open  | 
| » | 
 Factory configured - do not alter  | 
 E2  | 
 pins 2 & 3 closed  | 
| » | 
 Parallel port interrupt select IRQ7  | 
 E5  | 
 pins 2 & 3 closed  | 
| 
 Parallel port interrupt select IRQ5  | 
 E5  | 
 pins 1 & 2 closed  | |
| » | 
 CMOS memory normal operation  | 
 E6  | 
 open  | 
| 
 CMOS memory clear  | 
 E6  | 
 closed  | |
| » | 
 VGA port enabled  | 
 SW1/switch 1  | 
 closed  | 
| 
 VGA port disabled  | 
 SW1/switch 1  | 
 open  | |
| » | 
 Password check enabled  | 
 SW1/switch 2  | 
 open  | 
| 
 Password check disabled  | 
 SW1/switch 2  | 
 closed  | |
| » | 
 Factory configured - do not alter  | 
 SW1/switch 3  | 
 open  | 
| » | 
 Factory configured - do not alter  | 
 SW1/switch 4  | 
 open  | 
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 2MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 NONE  | 
 NONE  | 
| 
 4MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 4MB  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 8MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 16MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 16MB  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 32MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 64MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 VRAM CONFIGURATION  | |
| 
 Size  | 
 VRAM  | 
| 
 512KB  | 
 (4) 44256  |