MICRONICS COMPUTERS, INC.
JX30Gc VL-BUS
|
Processor |
80486SX/80486DX/80486DX2/80486DX4/Pentium Overdrive |
|
Processor Speed |
25/33/50(internal)/66(internal)/100(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 (2), parallel port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J8 |
Power LED & keylock |
J31 |
|
Serial port 2 |
J9 |
IDE interface - secondary |
J32 |
|
External keyboard |
J13 |
32-bit VESA Local bus slots |
S1 & S2 |
|
Serial port 1 |
J14 |
Turbo LED |
W18 |
|
Parallel port |
J16 |
Turbo switch |
W19 |
|
IDE interface - primary |
J26 |
Reset switch |
W20 |
|
Floppy drive interface |
J27 |
IDE interface LED |
W21 |
|
Speaker |
J30 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
|
Factory configured - do not alter |
SW1/3 |
Off |
|
|
Factory configured - do not alter |
SW1/4 |
Off |
|
|
Real time clock installed |
W1 |
Closed |
|
Real time clock not installed |
W1 |
Open | |
|
|
Monitor type select color |
W2 |
Closed |
|
Monitor type select monochrome |
W2 |
Open | |
|
|
Factory configured - do not alter |
W3 |
Open |
|
|
Parity enabled |
W4 |
Closed |
|
Parity disabled |
W4 |
Open | |
|
|
CMOS memory normal operation |
W5 |
Open |
|
CMOS memory clear |
W5 |
Closed | |
|
|
Normal operation |
W8 |
pins 2 & 3 closed |
|
BIOS recovery enabled |
W8 |
pins 1 & 2 closed | |
|
|
Primary IDE (J26) enabled |
W34 |
pins 1 & 2 closed |
|
Primary IDE (J26) disabled |
W34 |
pins 2 & 3 closed | |
|
|
Parallel port select IRQ7 |
W36 |
pins 1 & 2 closed |
|
Parallel port select IRQ5 |
W36 |
pins 2 & 3 closed | |
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
TAG |
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 |
|
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 |
|
CPU TYPE CONFIGURATION | ||
|
Type |
W12 |
W13 |
|
80486SX |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
80486DX |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
804896DX2 |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
Pentium Overdrive |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
SW1/1 |
SW1/2 |
|
25MHz |
Off |
On |
|
33MHz |
On |
On |
|
50iMHz |
Off |
On |
|
66iMHz |
On |
On |
|
75iMHz |
Off |
On |
|
100iMHz |
On |
On |
|
PARALLEL PORT CHANNEL CONFIGURATION | |||
|
Channel |
W37 |
W38 | |
|
NONE |
Open |
Open | |
|
DMA1 |
pins 1 & 2 closed |
pins 1 & 2 closed | |
|
DMA3 |
pins 2 & 3 closed |
pins 2 & 3 closed | |
|
SECONDARY IDE CHANNEL CONFIGURATION | |||
|
Channel |
W39 |
W40 | |
|
NONE |
Open |
Open | |
|
DMA6 |
pins 1 & 2 closed |
pins 1 & 2 closed | |
|
DMA7 |
pins 2 & 3 closed |
pins 2 & 3 closed | |