EQUITY 486SX/25 PLUS Motherboard Settings and Configuration
EPSON, INC.
EQUITY 486SX/25 PLUS
Processor | 80486SX/80487SX |
Processor Speed | 25Mhz |
Chip Set | Epson |
Max. Onboard DRAM | 16MB |
Cache | 32KB |
BIOS | Epson |
Dimensions | 355mm x 304mm |
I/O Options | 32-bit external memory card, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA port |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
PS/2 mouse port | CN1 | Case connector block | CN13 |
VGA port | CN3 | Floppy drive interface | CN15 |
Serial port | CN4 | IDE interface LED | CN16 |
Parallel port | CN5 | 32-bit external memory card slot | CN19 |
Hard drive LED | CN11 | Chassis fan power | CN21 |
Speaker | CN12 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP1 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP2 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP3 | pins 2 & 3 closed |
» | On-board VGA adapter enabled | JP4 | pins 1 & 2 closed |
On-board VGA adapter disabled | JP4 | pins 2 & 3 closed | |
» | Password enabled | JP5 | pins 1 & 2 closed |
Password disabled | JP5 | pins 2 & 3 closed | |
» | Monitor type select color | JP6 | pins 1 & 2 closed |
Monitor type select monochrome | JP6 | pins 2 & 3 closed | |
» | Mouse port enabled | JP7 | pins 1 & 2 closed |
Mouse port disabled | JP7 | pins 2 & 3 closed | |
» | Normal IOCHRDY signal enabled | JP15 | pins 1 & 2 closed |
Early IOCHRDY signal enabled | JP15 | pins 2 & 3 closed | |
DRAM CONFIGURATION | |||||||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | JP8 | JP9 | JP10 | JP11 | JP12 |
4MB | (4) 4M x 9 | NONE | NONE | NONE | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
8MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
9MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | NONE | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
10MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | (4) 1M x 9 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
12MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
16MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
Note:Pins designated should be in the closed position. Banks 0 - 3 are located on the external memory card. | |||||||||
BASE MEMORY CONFIGURATION | ||
Size | JP13 | JP14 |
256KB | pins 2 & 3 closed | pins 2 & 3 closed |
512KB | pins 2 & 3 closed | pins 1 & 2 closed |
640KB | pins 1 & 2 closed | pins 1 & 2 closed |
CPU TYPE CONFIGURATION | |||
CPU | JP1 | JP2 | JP3 |
80486SX | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
80487SX | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
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