MICRONICS COMPUTERS, INC.
JX30G
|
Processor |
80486SX/80486DX/80486DX2/Pentium Overdrive |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN1 |
Speaker |
J30 |
|
Floppy drive interface |
CN2 |
Power LED & keylock |
J31 |
|
IDE interface |
CN3 |
Turbo LED |
W18 |
|
External battery |
J8 |
Turbo switch |
W19 |
|
Serial port 2 |
J9 |
Reset switch |
W20 |
|
Internal keyboard connector |
J13 |
IDE interface LED |
W21 |
|
Serial port 1 |
J14 |
32-bit VESA Local bus slots |
SL1 & SL2 |
|
Parallel port |
J16 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Clock type select Motorola 126818 |
W1 |
Open |
|
Clock type select Dallas |
W1 |
Closed | |
|
|
Monitor type select color |
W2 |
Closed |
|
Monitor type select monochrome |
W2 |
Open | |
|
|
On board mouse disabled (IRQ12) |
W3 |
Open |
|
On board mouse enabled (IRQ12) |
W3 |
Closed | |
|
|
Parity enabled |
W4 |
Closed |
|
Parity disabled |
W4 |
Open | |
|
|
Dallas clock normal operation |
W5 |
Open |
|
Dallas clock discharge |
W5 |
Closed | |
|
|
Parallel port mode unidirectional |
W7 |
pins 1 & 2 closed |
|
Parallel port mode bidirectional |
W7 |
pins 2 & 3 closed | |
|
|
CMOS memory normal operation |
W8 |
pins 2 & 3 closed |
|
CMOS memory clear |
W8 |
pins 1 & 2 closed | |
|
|
Factory configured - do not alter |
W9 |
Open |
|
|
CPU type select 80486DX/DX2/Pentium Overdrive |
W12 |
pins 2 & 3 closed |
|
CPU type select 80486SX |
W12 |
pins 1 & 2 closed | |
|
|
PQFP CPU enabled |
W13 |
pins 1 & 2 closed |
|
PQFP CPU disabled |
W13 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
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 |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
24MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
|
28MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
52MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
W10 |
W11 |
W22 |
W23 |
W24 |
|
64KB |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
128KB |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CACHE JUMPER CONFIGURATION (WRITE BACK) | ||
|
Size |
W16 |
W17 |
|
64KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
128KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
Note: If write through is selected, open jumpers W16 & W17. | ||
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
25MHz |
Off |
On |
Off |
Off |
|
33MHz |
On |
On |
Off |
Off |
|
50iMHz |
Off |
On |
Off |
Off |
|
66iMHz |
On |
On |
Off |
Off |