JETPRO INFOTECH COMPANY, LTD.
MB-3A(MB-333SXA)
Processor |
80386SX/CX486SLC |
Processor Speed |
16/20/25/33MHz |
Chip Set |
ALI |
Max. Onboard DRAM |
16MB |
SRAM Cache |
None |
BIOS |
AMI/MR |
Dimensions |
178mm x 218mm |
I/O Options |
None |
NPU Options |
80387SX |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
J4 |
Turbo LED & Turbo switch |
J8 pins 1 & 2 |
Reset switch |
J6 |
Power LED & keylock |
J8 pins 4 & 5 |
Speaker |
J7 |
Power LED & keylock |
J9 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
ADS delay enabled |
J5 |
pins 1 & 2 closed | |
ADS delay disabled |
J5 |
pins 2 & 3 closed | |
» |
NPU mode select synchronous with CPU |
JP2 |
pins 1 & 2 closed |
NPU mode select asynchronous with CPU |
JP2 |
pins 2 & 3 closed | |
» |
RTC type select 146818 |
JP3 |
open |
RTC type select 1287 |
JP3 |
closed | |
» |
Monitor type select color |
JP4 |
pins 2 & 3 closed |
Monitor type select monochrome |
JP4 |
pins 1 & 2 closed | |
» |
Parity check disabled |
JP6 |
open |
Parity check enabled |
JP6 |
closed |
CPU SPEED CONFIGURATION | ||
CPU Speed |
JP1 |
JP5 |
16MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
20MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
25MHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
33MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size |
Bank 0 |
Bank 1 |
512KB |
(2) 256K x 9 |
NONE |
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
2MB |
(2) 1M x 9 |
NONE |
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
8MB |
(2) 4M x 9 |
NONE |
16MB |
(2) 4M x 9 |
(2) 4M x 9 |