JETPRO INFOTECH COMPANY, LTD.
MB-4F2
Processor |
80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2 |
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
Chip Set |
FOREX |
Max. Onboard DRAM |
32MB |
Cache |
64/128/256KB |
BIOS |
AMI/AWARD |
Dimensions |
220.2mm x 250.2mm |
I/O Options |
32-bit local bus card slot |
NPU Options |
80387 |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
JP2 |
Turbo switch |
JP15 |
Reset switch |
JP8 |
Turbo LED |
JP16 |
Power LED & keylock |
JP9 |
32-bit local bus card |
S1 |
Speaker |
JP10 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
» |
CMOS memory normal (internal battery) |
JP2 |
pins 1 and 2 closed |
CMOS memory normal (external battery) |
JP2 |
connected | |
CMOS memory clear |
JP2 |
open | |
» |
Factory configured - do not alter |
JP5 |
closed |
» |
Factory configured - do not alter |
JP6 |
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) 256K x 9 |
(4) 1M x 9 |
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 |
CPU TYPE CONFIGURATION | |||||
CPU |
JP12 |
JP13 |
JP30 |
W1B |
W1C-K |
80486DX2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
80486DX |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
80487SX |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
80486SX |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
CX486DLC |
N/A |
N/A |
N/A |
pins 1 & 2 |
pins 2 & 3 |
80386DX |
N/A |
N/A |
N/A |
pins 2 & 3 |
pins 2 & 3 |
Note:Pins designated should be in the closed position. |
CACHE CONFIGURATION | ||||
Size |
Cache CACHE |
Location |
TAG(0) |
TAG(1) |
64KB |
(8) 8K x 8 |
Banks 0 & 1 |
(1) 8K x 8 |
NONE |
128KB |
(4) 32K x 8 |
Bank 0 |
(1) 8K x 8 |
NONE |
256KB |
(8) 32K x 8 |
Banks 0 & 1 |
(1) 8K x 8 |
(1) 8K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size |
JP8A |
JP8B |
JP8C |
JP8E |
JP8F |
64KB |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
128KB |
pins 1 & 2 |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
256KB |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
Note:Pins designated should be in the closed position. |