DATA BUSINESS SYSTEMS
KEYBOARD PC
|
Processor |
80286/80386SX |
|
Processor Speed |
12/16/20/25MHz |
|
Chip Set |
C & T |
|
Max. Onboard DRAM |
16MB |
|
Cache |
32KB (80386SX model only) |
|
BIOS |
AMI |
|
Dimensions |
236mm x 205mm |
|
I/O Options |
Bus mouse port, external keyboard connector, floppy interface, game port, IDE interface, parallel ports (3), serial ports (2), VGA port, Video port (TTL) |
|
NPU Options |
80287/80387SX |
|
VIDEO SWITCH SETTINGS | ||||||
|
Function |
SW1/4 |
SW1/5 |
SW1/6 |
SW1/7 |
SW1/8 |
JP2 |
|
Monochrome |
Closed |
Open |
Closed |
Open |
Open |
pins 1 & 2 closed |
|
CGA |
Open |
Closed |
Open |
Closed |
Closed |
pins 2 & 3 closed |
|
EGA |
Open |
Closed |
Closed |
Open |
Open |
pins 1 & 2 closed |
|
Notes:For VGA mode, no switch configuration is necessary. | ||||||
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
DC power |
CN1 |
Hard & floppy drive power |
CN15 |
|
Video port (TTL) |
CN2 |
Internal IDE drive |
CN16 |
|
VGA port |
CN3 |
External IDE drive |
CN17 |
|
Parallel port (LPT1) |
CN4 |
16-bit ISA expansion slot (2/3 size) |
ISA1 |
|
Parallel port (LPT2) |
CN5 |
Speaker |
J1 |
|
Parallel port (LPT3) |
CN6 |
Integrated keyboard |
J2 |
|
Serial port (COM1) |
CN7 |
Turbo LED |
J3 |
|
Serial port (COM2) |
CN8 |
IDE interface LED |
J4 |
|
Bus mouse port |
CN9 |
Power LED & keylock |
J5 |
|
Auxiliary keyboard |
CN10 |
External battery |
J6 |
|
Game port |
CN12 |
Power switch |
J7 |
|
Internal floppy drive |
CN13 |
Reset switch |
J8 |
|
External floppy drive |
CN14 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
Volume select maximum |
CN11 |
max. clockwise | |
|
Volume select minimum |
CN11 |
max. counter-clockwise | |
| » |
CMOS memory normal operation |
JP1 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP1 |
pins 2 & 3 closed | |
| » |
Memory select 0 wait states |
JP3 |
Open |
|
Memory select 1 wait state |
JP3 |
Closed | |
| » |
LPT2 (CN5) enabled |
SW1/1 |
On |
|
LPT2 (CN5) disabled |
SW1/1 |
Off | |
| » |
LPT3 (CN6) enabled |
SW1/2 |
On |
|
LPT3 (CN6) disabled |
SW1/2 |
Off | |
| » |
Game port (CN12) enabled |
SW1/3 |
On |
|
Game port (CN12) disabled |
SW1/3 |
Off | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
(2) 256K x 9 |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
|
2.5MB |
(2) 256K x 9 |
(2) 1M x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 4M x 9 |
NONE |
|
8.5MB |
(2) 256K x 9 |
(2) 4M x 9 |
|
10MB |
(2) 1M x 9 |
(2) 4M x 9 |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |
|
CACHE CONFIGURATION | |
|
Size |
Bank 0 |
|
32KB |
(4) 16K x 4 |