UNITRON COMPUTER, INC.
3486 SYSTEM TYPE 16
|
Processor |
80386SX/CX486SLC |
|
Processor Speed |
16/20/25/33MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
16MB |
|
Cache |
None |
|
BIOS |
Phoenix |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), VGA port |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Game port |
CN1 |
IDE interface |
J23 |
|
VGA port |
CN2 |
IDE interface LED |
J24 |
|
Parallel port |
CN3 |
Turbo LED |
J26 |
|
Serial port 2 |
CN4 |
Turbo LED |
J30 |
|
Serial port 1 |
CN5 |
Power LED & keylock |
J31 |
|
Chassis fan power |
J13 |
Floppy drive interface |
J32 |
|
Reset switch |
J14 |
Riser Card |
SL1 |
|
Speaker |
J21 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Hard drive installed |
J1 |
pins 2 & 3 closed |
|
Hard drive not installed |
J1 |
pins 1 & 2 closed | |
|
|
Serial port B enabled |
J3 |
pins 1 & 2 closed |
|
Serial port B disabled |
J3 |
pins 2 & 3 closed | |
|
|
Game port enabled |
J4 |
pins 1 & 2 closed |
|
Game port disabled |
J4 |
pins 2 & 3 closed | |
|
|
Parallel port enabled |
J7 |
pins 1 & 2 closed |
|
Parallel port disabled |
J7 |
pins 2 & 3 closed | |
|
|
Serial port A enabled |
J8 |
pins 1 & 2 closed |
|
Serial port A disabled |
J8 |
pins 2 & 3 closed | |
|
|
Parallel port select LPT1 |
J9 |
pins 1 & 2 closed |
|
Parallel port select LPT2 |
J9 |
pins 2 & 3 closed | |
|
|
Monitor type select color |
J11 |
pins 1 & 2 closed |
|
Monitor type select monochrome |
J11 |
pins 2 & 3 closed | |
|
|
Display type select non interlaced |
J15 |
Open |
|
Display type select intrlaced |
J15 |
Closed | |
|
|
NPU synchronous with CPU |
J16 |
Open |
|
NPU asynchronous with CPU |
J16 |
Closed | |
|
|
Floppy drive interface enabled |
J25 |
pins 1 & 2 closed |
|
Floppy drive interface disabled |
J25 |
pins 2 & 3 closed | |
|
|
IDE interface enabled |
J27 |
pins 1 & 2 closed |
|
IDE interface disabled |
J27 |
pins 2 & 3 closed | |
|
|
Turbo LED enabled on J26 (System M) |
J29 |
pins 1 & 2 closed |
|
Floppy drive LED enabled on J26 (System B; open J30) |
J29 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
512KB |
(2) 256K x 9 |
NONE |
NONE |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
NONE |
NONE |
|
2MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
NONE |
NONE |
|
3MB |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 256K x 9 |
NONE |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
NONE |
|
DRAM CONFIGURATION (CONT) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
5MB |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
|
6MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
|
8MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 4M x 9 |
NONE |
NONE |
NONE |
|
12MB |
(2) 1M x 9 |
(2) 4M x 9 |
(2) 1M x 9 |
NONE |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |
NONE |
NONE |
|
CPU TYPE CONFIGURATION | |
|
Type |
J28 |
|
80386SX |
Open |
|
80486SLC |
pins 1 & 2, 3 & 4, 5 & 6 closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
J35 |
J38 |
|
16MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
20MHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
25MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
33MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
FLOPPY DRIVE CONFIGURATION | ||||
|
Type |
J17 |
J18 |
J19 |
J20 |
|
System B |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
System M |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
Note: System B- drive B has twisted cable; drive A has straight cable. System M- drive B has straight cable; drive A has twisted cable | ||||
|
SERIAL PORT CONFIGURATION | |
|
Port 1 |
J10 |
|
COM1 |
pins 1 & 2 closed |
|
COM3 |
pins 2 & 3 closed |
|
SERIAL PORT CONFIGURATION | |
|
Port 2 |
J2 |
|
COM2 |
pins 1 & 2 closed |
|
COM4 |
pins 2 & 3 closed |
|
VRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
256KB |
(2) 44256 |
NONE |
NONE |
NONE |
|
512KB |
(2) 44256 |
(2) 44256 |
NONE |
NONE |
|
1MB |
(2) 44256 |
(2) 44256 |
(2) 44256 |
(2) 44256 |
|
ON BOARD VGA CONFIGURATION | ||
|
Setting |
J36 |
J37 |
|
Enabled |
Closed |
Closed |
|
Disabled |
Open |
Open |