MICRONICS COMPUTERS, INC.
JX30G VL-BUS
|
Processor |
80486SX/80486DX/80486DX2/Pentium Overdrive |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Micronics |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/128/256KB |
|
BIOS |
Phoenix |
|
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 |
|
IDE interface |
CN2 |
Speaker |
J30 |
|
Floppy drive interface |
CN3 |
Power LED & keylock |
J31 |
|
External battery |
J8 |
32-bit VESA Local bus slot |
S1 |
|
Serial port 2 |
J9 |
32-bit VESA Local bus slot |
S2 |
|
External keyboard/PS2 style mouse |
J10 |
Turbo LED |
W18 |
|
Serial port 1 |
J14 |
Reset switch |
W20 |
|
Parallel port |
J16 |
IDE interface LED |
W21 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
|
Factory configured - do not alter |
SW1/switch 3 |
Off |
|
|
Factory configured - do not alter |
SW1/switch 4 |
Off |
|
|
Monitor type select color |
W2 |
Closed |
|
Monitor type select monochrome |
W2 |
Open | |
|
|
PS/2 mouse enabled |
W3 |
Closed |
|
PS/2 mouse disabled |
W3 |
Open | |
|
|
Parity enabled |
W4 |
Closed |
|
Parity disabled |
W4 |
Open | |
|
|
Factory configured - do not alter |
W6 |
Open |
|
|
Parallel port unidirectional (for printer) |
W7 |
pins 1 & 2 closed |
|
Parallel port bi-directional |
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 |
|
|
Factory configured - do not alter |
W25 |
N/A |
|
|
Factory configured - do not alter |
W26 |
N/A |
|
REAL TIME CLOCK SETTINGS | ||
|
Settings |
W1 |
W5 |
|
DALLAS Real Time Clock enabled |
Closed |
N/A |
|
MOTOROLA 146818 Real Time Clock enabled |
Open |
N/A |
|
DALLAS Real Time Clock clear |
N/A |
Closed |
|
Real time clock normal operation |
N/A |
Open |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 256K x 36 |
NONE |
NONE |
NONE |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
NONE |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
6MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
10MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
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 |
|
18MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
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 |
|
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 |
|
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/U34 |
TAG/U61 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 32K x 8 |
(1) 32K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
(1) 32K x 8 |
|
Note:If Write-Through caching is not being used, the chip at U61 is not installed. | ||||
|
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. | |||||
|
CACHING METHOD CONFIGURATION | |||
|
Method |
Size |
W16 |
W17 |
|
Write-Through |
All |
Open |
Open |
|
Write-Back |
64KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
Write-Back |
128KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
Write-Back |
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | |
|
Type |
W12 |
|
80486SX |
pins 1 & 2 closed |
|
80486DX |
pins 2 & 3 closed |
|
804896DX2 |
pins 2 & 3 closed |
|
Pentium Overdrive |
pins 2 & 3 closed |
|
CPU PQFP CONFIGURATION | |
|
PQFP |
W13 |
|
Enabled |
pins 1 & 2 closed |
|
Disabled |
pins 2 & 3 closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
SW1/switch 1 |
SW1/switch 2 |
|
25MHz |
Off |
On |
|
33MHz |
On |
On |
|
50i MHz |
Off |
On |
|
66i MHz |
On |
On |