MYLEX CORPORATION
MVI486 & MVI486LC
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
20/25/33MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
MYLEX |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
32-bit VESA Local bus slot |
J90 |
IDE interface LED |
JP7 |
|
32-bit VESA Local bus slot |
J91 |
External battery |
JP31 |
|
Reset switch |
JP2 |
Floppy drive interface |
P1 |
|
Speaker |
JP3 |
IDE port |
P2 |
|
Power LED & keylock |
JP4 |
Serial port 2 |
P3 |
|
Turbo LED |
JP5 |
Serial port 1 |
P4 |
|
Turbo switch |
JP6 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select monochrome |
JP1 |
Open |
|
Monitor type select color |
JP1 |
Closed | |
|
|
CMOS memory clear |
JP30 |
pins 1 & 2 closed |
|
CMOS memory normal operation (External battery) |
JP30 |
Open | |
|
CMOS memory normal operation (Internal battery) |
JP30 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(1) 256K x 36 |
NONE |
|
4MB |
(1) 1M x 36 |
NONE |
|
5MB |
(1) 1M x 36 |
(1) 256K x 36 |
|
6MB |
(1) 1M x 36 |
(1) 512K x 36 |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
|
10MB |
(1) 2M x 36 |
(1) 512K x 36 |
|
12MB |
(1) 2M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 4M x 36 |
NONE |
|
18MB |
(1) 4M x 36 |
(1) 512K x 36 |
|
20MB |
(1) 4M x 36 |
(1) 1M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
|
40MB |
(1) 4M x 36 |
(1) 2M x 36 |
|
48MB |
(1) 8M x 36 |
(1) 4M x 36 |
|
64MB |
(1) 8M x 36 |
(1) 8M x 36 |
|
CACHE CONFIGURATION | |||||
|
Size |
Bank 0 |
Bank 1 |
TAG/U15 |
TAG/U16 |
TAG/U17 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
(1) 64K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
NONE |
(1) 8K x 8 |
(1) 64K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
(1) 64K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||||
|
Size |
JP14 |
JP15 |
JP16 |
JP17 |
JP18 |
JP19 |
|
64KB |
pins 2 & 3 |
pins 2 & 3 |
Open |
Open |
Open |
Open |
|
128KB |
pins 1 & 2 |
pins 1 & 2 |
Closed |
Closed |
Open |
Open |
|
256KB |
pins 2 & 3 |
pins 2 & 3 |
Closed |
Closed |
Closed |
Closed |
|
Note:Pins designated should be in the closed position. | ||||||
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP25 |
JP26 |
JP27 |
|
80486SX |
Open |
pins 2 & 3 closed |
Open |
|
80487SX |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
CPU SPEED CONFIGURATION | |||
|
Speed |
JP8 |
JP9 |
JP10 |
|
20MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
25MHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
33MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
PARALLEL PORT OUTPUT SELECTION | |||
|
Setting |
JP28 |
JP29 | |
|
Uni-directional (printer) |
Closed |
Closed | |
|
Bi-directional |
Open |
Open | |