UNIDENTIFIED
MB-4D50AG
Processor |
CXM6/80486SX/CXM7/80486DX/80486DX2/P4S/P23S/P24S/Pentium Overdrive |
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
Chip Set |
ALI |
Max. Onboard DRAM |
128MB |
Cache |
64/128/256/512KB |
BIOS |
Unidentified |
Dimensions |
250mm x 220mm |
I/O Options |
32-bit VESA local bus slots (2), 32-bit PCI slots (3), green PC connector |
NPU Options |
None |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
J1 |
Green PC connector (monitor) |
JP6 |
Speaker |
J2 |
Green PC connector |
JP40 |
Power LED & keylock |
J3 |
Green PC connector |
JP41 |
Turbo switch |
J4 |
32-bit VESA local bus slots |
SL1 & SL2 |
Turbo LED |
J5 |
32-bit PCI slots |
PC1 - PC3 |
Reset switch |
J6 | ||
Note: The location of JP6 is unidentified. |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP37 |
N/A |
|
CMOS memory normal operation |
JP38 |
pins 1 & 2 closed |
CMOS memory clear |
JP38 |
pins 2 & 3 closed | |
|
Monitor type select color |
JP39 |
pins 2 & 3 closed |
Monitor type select monochrome |
JP39 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP42 |
N/A |
DRAM CONFIGURATION | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
1MB |
(1) 256K x 36 |
NONE |
NONE |
NONE |
2MB |
(1) 512K x 36 |
NONE |
NONE |
NONE |
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
NONE |
3MB |
(1) 512K x 36 |
NONE |
(1) 256K x 36 |
NONE |
3MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
4MB |
(1) 512K x 36 |
NONE |
(1) 512K x 36 |
NONE |
4MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
NONE |
5MB |
(1) 1M x 36 |
(1) 256K x 36 |
NONE |
NONE |
6MB |
(1) 512K x 36 |
NONE |
(1) 1M x 36 |
NONE |
6MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
6MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
NONE |
6MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
7MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
7MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
7MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
8MB |
(1) 2M x 36 |
NONE |
NONE |
NONE |
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
9MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
9MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
9MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
NONE |
10MB |
(1) 512K x 36 |
NONE |
(1) 2M x 36 |
NONE |
10MB |
(1) 2M x 36 |
NONE |
(1) 512K x 36 |
NONE |
10MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
10MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
10MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
12MB |
(1) 2M x 36 |
NONE |
(1) 1M x 36 |
NONE |
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
13MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
16MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
16MB |
(1) 2M x 36 |
NONE |
(1) 2M x 36 |
NONE |
17MB |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
NONE |
DRAM CONFIGURATION (CONT) | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
17MB |
(1) 4M x 36 |
(1) 256K x 36 |
NONE |
NONE |
18MB |
(1) 512K x 36 |
NONE |
(1) 4M x 36 |
NONE |
18MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
18MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
NONE |
18MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
19MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
19MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
19MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
20MB |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
NONE |
20MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
21MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
21MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
21MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
21MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
NONE |
21MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
NONE |
22MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
22MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
22MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
22MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
22MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
22MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
24MB |
(1) 2M x 36 |
NONE |
(1) 4M x 36 |
NONE |
24MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
24MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
24MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
25MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
25MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
25MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
32MB |
(1) 8M x 36 |
NONE |
NONE |
NONE |
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
33MB |
(1) 8M x 36 |
NONE |
(1) 256K x 36 |
NONE |
33MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
33MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
33MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
NONE |
34MB |
(1) 512K x 36 |
NONE |
(1) 8M x 36 |
NONE |
34MB |
(1) 8M x 36 |
NONE |
(1) 512K x 36 |
NONE |
34MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
34MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
36MB |
(1) 8M x 36 |
NONE |
(1) 1M x 36 |
NONE |
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
DRAM CONFIGURATION (CONT) | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
36MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
36MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
37MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
37MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
40MB |
(1) 2M x 36 |
NONE |
(1) 8M x 36 |
NONE |
40MB |
(1) 8M x 36 |
NONE |
(1) 2M x 36 |
NONE |
48MB |
(1) 8M x 36 |
NONE |
(1) 4M x 36 |
NONE |
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
49MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
64MB |
(1) 8M x 36 |
NONE |
(1) 8M x 36 |
NONE |
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
68MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
128MB |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
CACHE CONFIGURATION | |||
Size |
Bank 0 |
Bank 1 |
TAG |
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
512KB |
(4) 128K x 8 |
NONE |
(1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size |
JP1 |
JP2 |
JP3 |
JP4 |
JP5 |
64KB |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
128KB |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
256KB |
2 & 3 |
4 & 5 |
2 & 3 |
2 & 3 |
1 & 2 |
512KB |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
Note: Pins designated should be closed position. |
CPU TYPE CONFIGURATION | ||||||
Type |
JP15 |
JP16 |
JP17 |
JP18 |
JP19 |
JP20 |
CX M6 |
Open |
Open |
1 & 2 |
Open |
Closed |
Open |
80486SX |
Open |
Open |
1 & 2 |
Closed |
Open |
Open |
CX M7 |
Closed |
Open |
1 & 2 |
Open |
Closed |
Closed |
AM486DXL |
Closed |
Open |
1 & 2 |
Closed |
Open |
Open |
80486DX |
Closed |
Open |
1 & 2 |
Closed |
Open |
Open |
80486DX2 |
Closed |
Open |
1 & 2 |
Closed |
Open |
Open |
P23S |
Closed |
Closed |
1 & 2 |
Closed |
Open |
Open |
P4S |
Closed |
Closed |
1 & 2 |
Closed |
Open |
Open |
P24S |
Closed |
Closed |
1 & 2 |
Closed |
Open |
Open |
P24T |
Closed |
Open |
2 & 3 |
Closed |
Open |
Closed |
Note: Pins designated should be in the closed position. The location of JP15 & JP16 are unidentified. |
CPU TYPE CONFIGURATION (CONT) | ||||||
Type |
JP21 |
JP22 |
JP23 |
JP24 |
JP25 |
JP26 |
CX M6 |
1 & 2 |
2 & 3 |
4 & 5 |
Open |
1 & 2 |
4 & 5 |
80486SX |
1 & 2 |
1 & 2 |
2 & 4 |
Open |
Open |
2 & 4 |
CX M7 |
2 & 3 |
2 & 3 |
4 & 5 |
Open |
1 & 2 |
4 & 5 |
AM486DXL |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
Open |
1 & 2 |
80486DX |
2 & 3 |
1 & 2 |
2 & 4 |
2 & 3 |
Open |
2 & 4 |
80486DX2 |
2 & 3 |
1 & 2 |
2 & 4 |
2 & 3 |
Open |
2 & 4 |
P23S |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
P4S |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
P24S |
1 & 2 |
2 & 3 |
2 & 3 |
Open |
2 & 3 |
2 & 3 |
P24T |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (BIOS SETUP) | |||
Type |
JP7 |
JP8 |
JP9 |
CX M6 |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
80486SX |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
CX M7 |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
AM486DXL |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
CPU TYPE CONFIGURATION (CHIPSET SETUP) | ||||
Type |
JP27 |
JP29 |
JP30 |
JP47 |
CX M6 (1x) |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
Open |
CX M6 (2x) |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |
80486SX |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
N/A |
CX M7 (1x) |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
Open |
CX M7 (2x) |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |
AM486DXL |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
N/A |
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
N/A |
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
N/A |
CPU SPEED CONFIGURATION | |||||
Speed |
JP10 |
JP11 |
JP12 |
JP13 |
JP28 |
20MHz |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
25MHz |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
33MHz |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
40MHz |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
50iMHz |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
50MHz |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
66iMHz |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
Note: Pins designated should be in the closed position. |
CPU SPEED CONFIGURATION (CONT) | |||||
Speed |
JP31 |
JP32 |
JP33 |
JP34 |
JP35 |
20MHz |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
25MHz |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
33MHz |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
40MHz |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
50iMHz |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
50MHz |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
66iMHz |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
Note: Pins designated should be in the closed position. |
VESA WAIT STATE CONFIGURATION | |
Wait states |
JP46 |
0 wait states |
pins 1 & 2 closed |
1 wait state |
pins 2 & 3 closed |
BUS SPEED CONFIGURATION | |
CPU speed |
JP45 |
<= 33MHz |
pins 1 & 2 closed |
> 33MHz |
pins 2 & 3 closed |
BIOS CONFIGURATION | ||
Type |
JP36 |
JP43 |
EPROM |
pins 1 & 2 closed |
Open |
Flash ROM |
pins 2 & 3 closed |
Closed |
PCI IRQ CONFIGURATION (INT A) | |
IRQ |
JP14 |
IRQ5 |
pins 1 & 2 closed |
IRQ9 |
pins 3 & 4 closed |
IRQ10 |
pins 5 & 6 closed |
PCI IRQ CONFIGURATION (INT B) | |
IRQ |
JP14 |
IRQ11 |
pins 7 & 8 closed |
IRQ12 |
pins 9 & 10 closed |
PCI IRQ CONFIGURATION (INT C) | |
IRQ |
JP14 |
IRQ14 |
pins 11 & 12 closed |
IRQ15 |
pins 13 & 14 closed |
PCI IRQ CONFIGURATION (INT D) | |
Interrupt |
JP14 |
INT4J |
pins 17 & 18 closed |