ZEOS INTERNATIONAL, LTD.
UPGRADABLE SYSTEMS MAINBOARD
| 
 Processor  | 
 80386/80486SX/80487SX/80486DX (On proprietary CPU cards)  | 
| 
 Processor Speed  | 
 20/25/33MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Max. Onboard DRAM  | 
 32MB  | 
| 
 Cache  | 
 128KB  | 
| 
 BIOS  | 
 Award  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 floppy drive interface, game port, IDE interface, parallel port, serial ports (2), proprietary CPU card slot  | 
| 
 NPU Options  | 
 80387  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 J1  | 
 Turbo switch  | 
 J10  | 
| 
 Game port  | 
 J3  | 
 Reset switch  | 
 J11  | 
| 
 Parallel port  | 
 J5  | 
 Turbo LED  | 
 J12  | 
| 
 Serial port 2  | 
 J6  | 
 Power LED & keylock  | 
 J13  | 
| 
 Serial port 1  | 
 J7  | 
 Speaker  | 
 J14  | 
| 
 Floppy drive interface  | 
 J8  | 
 IDE interface LED  | 
 J15  | 
| 
 IDE interface  | 
 J9  | 
 Proprietary CPU card slot  | 
 CPU1 & CPU2  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 Monitor type select CGA  | 
 J4  | 
 Closed  | 
| 
 Monitor type select Mono/EGA/VGA  | 
 J4  | 
 Open  | |
| 
 »  | 
 Game port enabled  | 
 P1  | 
 Closed  | 
| 
 Game port disabled  | 
 P1  | 
 Open  | |
| 
 »  | 
 Parallel port interupt select IRQ7  | 
 PIRQ  | 
 pins 1 & 2 closed  | 
| 
 Parallel port interupt select IRQ5  | 
 PIRQ  | 
 pins 2 & 3 closed  | |
| 
 Parallel port interupt disabled  | 
 PIRQ  | 
 all open  | |
| 
 »  | 
 Serial port 1 (COM1) interupt select IRQ4  | 
 SIRQ1  | 
 pins 2 & 3 closed  | 
| 
 Serial port 1 (COM1) interupt select IRQ3  | 
 SIRQ1  | 
 pins 1 & 2 closed  | |
| 
 Serial port 1 (COM1) interupt disabled  | 
 SIRQ1  | 
 all open  | |
| 
 »  | 
 Serial port 2 (COM2) interupt select IRQ3  | 
 SIRQ2  | 
 pins 1 & 2 closed  | 
| 
 Serial port 2 (COM2) interupt select IRQ4  | 
 SIRQ2  | 
 pins 2 & 3 closed  | |
| 
 Serial port 2 (COM2) interupt disabled  | 
 SIRQ2  | 
 all open  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 1MB  | 
 (4) 256K x 9  | 
 NONE  | 
| 
 2MB  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
| 
 4MB  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 5MB  | 
 (4) 1M x 9  | 
 (4) 256K x 9  | 
| 
 8MB  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 20MB  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 32MB  | 
 (4) 4M x 9  | 
 (4) 4M x 9  |