EPSON, INC.
EQUITY 386DX/25 PLUS
|
Processor |
80386DX |
|
Processor Speed |
25MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
Chips and Technology |
|
Maximum Onboard Memory |
16MB |
|
Maximum Video Memory |
Unidentified |
|
Cache |
32KB |
|
BIOS |
Epson |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA port |
|
NPU Options |
80387DX/3167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN1 |
Speaker |
CN12 |
|
VGA port |
CN3 |
LED connector |
CN13 |
|
Serial port |
CN4 |
Power LED |
CN14 |
|
Parallel port |
CN5 |
Floppy drive interface |
CN15 |
|
IDE interface LED |
CN11 |
IDE interface |
CN16 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
IOCHRDY signal normal |
J1 |
Pins 2 & 3 closed |
|
IOCHRDY signal early |
J1 |
Pins 1 & 2 closed | |
|
|
Factory configured do not alter |
J9 |
Unidentified |
|
|
Internal mouse port enabled |
J10 |
Pins 1 & 2 closed |
|
Internal mouse port disabled |
J10 |
Pins 2 & 3 closed | |
|
|
External mouse port enabled |
J11 |
Pins 2 & 3 closed |
|
External mouse port disabled |
J11 |
Pins 1 & 2 closed | |
|
|
Monitor type select color |
J12 |
Pins 1 & 2 closed |
|
Monitor type select monochrome |
J12 |
Pins 2 & 3 closed | |
|
|
Password disabled |
J13 |
Pins 1 & 2 closed |
|
Password enabled |
J13 |
Pins 2 & 3 closed | |
|
|
On board video enabled |
J14 |
Pins 1 & 2 closed |
|
On board video disabled |
J14 |
Pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(4) 256K x 9 |
None |
None |
None |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
None |
None |
|
3MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
None |
|
4MB (A) |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB (B) |
(4) 1M x 9 |
None |
None |
None |
|
6MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
None |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
None |
None |
|
9MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 256K x 9 |
None |
|
10MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
10MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
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 |
|
DRAM JUMPER CONFIGURATION | |||||
|
Size |
J4 |
J5 |
J6 |
J7 |
J8 |
|
1MB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
2MB |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
3MB |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
4MB (A) |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
|
4MB (B) |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
6MB |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
1 & 2 |
|
8MB |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
9MB |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
10MB |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
10MB |
1 & 2 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
|
12MB |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
1 & 2 |
|
16MB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
BASE MEMORY SELECTION | ||
|
Size |
J2 |
J3 |
|
256KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
512KB |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
640KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CACHE CONFIGURATION |
|
Note: Board is factory installed with 32KB cache and is not configurable. |
|
VIDEO MEMORY CONFIGURATION |
|
Note: The size of the video memory is unidentified. |