OCEAN INFORMATION SYSTEMS, INC.
DRAGON EISA 486
|
Processor |
80486DX |
|
Processor Speed |
50MHz |
|
Chip Set |
OPTI |
|
Max. onboard DRAM |
128MB |
|
SRAM Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 215mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J4 |
Reset switch |
S9 |
|
Power LED & keylock |
J5 |
CPU heatsink fan (+5VDC) |
JP22 |
|
Note:The location of JP22 is unknown and may be labeled JP17 on the board. | |||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP1 |
Closed | |
|
Factory configured - do not alter |
JP2 |
Closed | |
|
Factory configured - do not alter |
JP3 |
pins 1 & 2 closed | |
|
Monitor type select color |
JP4 |
Closed | |
|
Monitor type select monochrome |
JP4 |
Open | |
|
Factory configured - do not alter |
JP6 |
Open | |
|
Factory configured - do not alter |
JP7 |
pins 1 & 2 and 3 & 4 closed | |
|
Factory configured - do not alter |
JP8 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP9 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
SRAM CONFIGURATION | ||||||
|
Size |
Bank 0 |
Bank 1 |
Dirty (U49) |
TAG (U50) |
TAG (U51) |
TAG (U64) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 16K x 1 |
(1) 8K x 8 |
None |
(1) 16K x 1 or 64K x 1 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 16K x 1 |
(1) 8K x 8 |
None |
(1) 16K x 1 or 64K x 1 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 16K x 1 |
(1) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 1 or 64K x 1 |
|
512KB |
(4) 128K x 8 |
NONE |
(1) 16K x 1 |
(1) 32K x 8 |
None |
(1) 64K x 1 |
|
SRAM JUMPER CONFIGURATION | ||||
|
Jumper |
64KB |
128KB |
256KB |
512KB |
|
JP5 |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
JP10 |
Open |
Open |
Open |
Closed |
|
JP11 |
Open |
Open |
Closed |
Closed |
|
JP12 |
Open |
Closed |
Closed |
Closed |
|
JP13 |
Open |
Open |
Closed |
Closed |
|
JP14 |
Open |
Closed |
Closed |
Closed |
|
JP15 |
Open |
Open |
Open |
Closed |