DASH COMPUTER, INC.
DC-486SX 25/33/50
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
20/25/33/50MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external memory card slot |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J10 |
32-bit external memory card |
S1 |
|
Power LED & keylock |
J23 |
Reset switch |
SW1 |
|
Speaker |
J24 |
Turbo switch |
SW2 |
|
Turbo LED |
JP12 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
JP1 |
Closed | |
|
Monitor type select monochrome |
JP1 |
Open | |
|
CMOS memory normal operation |
JP2 |
pins 2 & 3 closed | |
|
CMOS memory clear |
JP2 |
pins 1 & 2 closed | |
|
Bus speed select ATCLK/6 |
JP3 |
Closed | |
|
Bus speed select ATCLK/4 |
JP3 |
Open | |
|
CPU speed select OSC/2 |
JP4 |
pins 2 & 3 closed | |
|
CPU speed select OSC/1 |
JP4 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
|
28MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
36MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
52MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed at S1. | ||||
|
CACHE CONFIGURATION | |
|
Size |
Bank 0 |
|
64KB |
(9) 8K x 8 |
|
256KB |
(9) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JP8 |
JP9 |
JP10 |
JP11 |
|
64KB |
Open |
Open |
Open |
Open |
|
256KB |
Closed |
Closed |
Closed |
Closed |
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP5 |
JP6 |
JP7 |
|
80486SX |
Open |
pins 2 & 3 closed |
Closed |
|
80487SX |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
80486DX |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |