JETPRO INFOTECH COMPANY, LTD.
MB-60 EISA486/33/50
Processor | 80486DX/80486DX2 |
Processor Speed | 33/50(internal)/50/66(internal)MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 128MB |
SRAM Cache | 64/128/256 |
BIOS | AMI |
Dimensions | 330.2mm x 218.4mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | J1 | Turbo LED | J4 |
Speaker | J2 | Reset switch | J5 |
Turbo switch | J3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Power good signal detect from board | JP2 | pins 1 & 2 closed |
Power good signal detect from power supply | JP2 | pins 2 & 3 closed | |
» | Monitor type select color | JP3 | closed |
Monitor type select monochrome | JP3 | open | |
ATCLK select iOSC/1 | JP6 | pins 1 & 2 closed | |
ATCLK select iOSC/2 | JP6 | pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
4MB | (4) 1M x 9 | NONE |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
64MB | (4) 16M x 9 | NONE |
128MB | (4) 16M x 9 | (4) 16M x 9 |
SRAM JUMPER CONFIGURATION | |||
Jumper | 64KB | 128KB | 256KB |
JP7 | open | open | closed |
JP8 | open | open | closed |
JP9 | open | closed | closed |
JP10 | open | closed | closed |
JP11 | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed |
SRAM CONFIGURATION | ||
Size | Cache SRAM | Location |
64KB | (8) 8K x 8 | Banks 0 & 1 |
128KB | (4) 32K x 8 | Bank 0 |
256KB | (8) 32K x 8 | Banks 0 & 1 |
Note:The TAG memory does not need to be changed when upgrading. |
CPU JUMPER CONFIGURATION | ||
CPU | JP4 | JP5 |
80486DX2/66 | closed | open |
80486DX/50 | closed | closed |
80486DX2/50 | open | open |
80486DX/40 | open | closed |
80486DX/33 | closed | open |