EPSON, INC.
EQUITY 4 SERIES
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
20/25/33/50(internal)/66(internal) MHz |
|
Chip Set |
Toshiba |
|
Max. Onboard DRAM |
32MB |
|
SRAM Cache |
None |
|
BIOS |
Award |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, PS/2 keyboard connector, proprietary riser card, serial port (2), VGA feature connector, VGA port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN2 |
Reserved for future use |
CN11 |
|
PS/2 keyboard |
CN3 |
Speaker |
CN12 |
|
Serial port 2 |
CN4 |
Reserved for future use |
CN13 |
|
Serial port 1 |
CN5 |
Reserved for future use |
CN14 |
|
Parallel port |
CN6 |
Reserved for future use |
CN15 |
|
VGA port |
CN7 |
IDE interface LED |
CN16 |
|
VGA feature connector |
CN8 |
Power LED |
CN17 |
|
Floppy drive interface |
CN9 |
Proprietary riser card |
SLOT1 |
|
IDE interface |
CN10 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
Monitor type select monochrome |
J5 |
Open |
|
Monitor type select color |
J5 |
Closed | |
| » |
Onboard video enabled |
J6 |
pins 1 & 2 closed |
|
Onboard video disabled |
J6 |
pins 2 & 3 closed | |
| » |
CMOS memory normal operation |
J7 |
Open |
|
CMOS memory clear |
J7 |
Closed | |
| » |
Factory configured - do not alter |
J8 |
pins 1 & 2 closed |
| » |
Factory configured - do not alter |
J13 |
pins 2 & 3 closed |
| » |
Factory configured - do not alter |
J14 |
pins 2 & 3 closed |
| » |
Factory configured - do not alter |
J15 |
pins 2 & 3 closed |
| » |
Fast Gate A20 enabled |
J18 |
pins 1 & 2 closed |
|
Fast Gate A20 disabled |
J18 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(1) 256K x 36 |
NONE |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
|
4MB |
(1) 1M x 36 |
NONE |
|
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 4M x 36 |
NONE |
|
17MB |
(1) 256K x 36 |
(1) 4M x 36 |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
J19 |
J20 |
J21 |
J22 |
|
20MHz |
Closed |
Open |
Closed |
Open |
|
25/50i MHz |
Open |
Open |
Closed |
Open |
|
33/66i MHz |
Closed |
Open |
Open |
Open |
|
CPU TYPE CONFIGURATION | |||||
|
CPU |
Type |
J10 |
J11 |
J12 |
J23 |
|
80486SX |
PQFP |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
|
80486SX |
PGA |
pins 2 & 3 |
pins 2 & 3 |
Open |
pins 2 & 3 |
|
80487SX |
PGA |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 2 & 3 |
|
80486DX |
PGA |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
|
Note:Pins designated should be in the closed position. | |||||