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 (CON’T) | ||||
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 (CON’T) | ||||
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 (CON’T) | ||||||
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 (CON’T) | |||||
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 |