UNIDENTIFIED
MB-4D50AV
Processor | CXM6/SL80486SX/80486SX/CXM7/AM486DXLV-S/SL80486DX/80486DX/ 80486DX2/Pentium Overdrive |
Processor Speed | 25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | ALI |
Max. Onboard DRAM | 128MB |
Cache | 128/256KB |
BIOS | AMI |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slots (3), green PC connector |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Reset switch | J1 | Green PC connector | JP9 |
Turbo LED | J2 | Green PC connector (monitor) | JP10 |
External battery | J3 | Green PC connector-(external input) | JP32 |
Turbo switch | J4 | Green PC connector-(ring input) | JP33 |
Power LED & keylock | J5 | 32-bit VESA local bus slots | SL1 - SL3 |
Speaker | J6 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Battery type select internal | J3 | Open |
Battery type select external | J3 | Closed | |
CMOS memory clear | J3 | pins 2 & 3 closed | |
» | Real time clock enabled | JP12 | pins 1 & 2 closed |
Real time clock disabled | JP12 | pins 2 & 3 closed | |
» | Monitor type select color | JP13 | Closed |
Monitor type select monochrome | JP13 | Open | |
» | CPU type select P24T/CXM6/CXM7 2x | JP20 | Closed |
CPU type select CXM6/CXM7 1x | JP20 | Open |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | NONE | NONE | NONE | (1) 256K x 36 |
2MB | NONE | NONE | (1) 256K x 36 | (1) 256K x 36 |
2MB | NONE | NONE | NONE | (1) 512K x 36 |
3MB | NONE | (1) 256K x 36 | NONE | (1) 512K x 36 |
3MB | NONE | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 |
4MB | NONE | NONE | NONE | (1) 1M x 36 |
4MB | NONE | (1) 512K x 36 | NONE | (1) 512K x 36 |
4MB | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 |
5MB | NONE | NONE | (1) 256K x 36 | (1) 1M x 36 |
5MB | NONE | NONE | (1) 1M x 36 | (1) 256K x 36 |
6MB | NONE | (1) 1M x 36 | NONE | (1) 512K x 36 |
6MB | NONE | (1) 256K x 36 | (1) 256K x 36 | (1) 1M x 36 |
6MB | NONE | (1) 1M x 36 | (1) 256K x 36 | (1) 256K x 36 |
6MB | NONE | (1) 256K x 36 | (1) 1M x 36 | (1) 256K x 36 |
8MB | NONE | NONE | (1) 1M x 36 | (1) 1M x 36 |
8MB | NONE | NONE | NONE | (1) 2M x 36 |
9MB | NONE | (1) 256K x 36 | NONE | (1) 2M x 36 |
9MB | NONE | (1) 1M x 36 | (1) 256K x 36 | (1) 1M x 36 |
9MB | NONE | (1) 256K x 36 | (1) 1M x 36 | (1) 1M x 36 |
9MB | NONE | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 |
10MB | NONE | (1) 512K x 36 | NONE | (1) 2M x 36 |
10MB | NONE | (1) 2M x 36 | NONE | (1) 512K x 36 |
12MB | NONE | (1) 1M x 36 | NONE | (1) 2M x 36 |
12MB | NONE | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
13MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 |
16MB | NONE | NONE | NONE | (1) 4M x 36 |
16MB | NONE | (1) 2M x 36 | NONE | (1) 2M x 36 |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
17MB | NONE | NONE | (1) 256K x 36 | (1) 4M x 36 |
17MB | NONE | NONE | (1) 4M x 36 | (1) 256K x 36 |
18MB | NONE | (1) 4M x 36 | NONE | (1) 512K x 36 |
18MB | NONE | (1) 256K x 36 | (1) 256K x 36 | (1) 4M x 36 |
DRAM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
18MB | NONE | (1) 4M x 36 | (1) 256K x 36 | (1) 256K x 36 |
18MB | NONE | (1) 256K x 36 | (1) 4M x 36 | (1) 256K x 36 |
20MB | NONE | NONE | (1) 1M x 36 | (1) 4M x 36 |
20MB | NONE | NONE | (1) 4M x 36 | (1) 1M x 36 |
21MB | NONE | (1) 1M x 36 | (1) 256K x 36 | (1) 4M x 36 |
21MB | NONE | (1) 4M x 36 | (1) 256K x 36 | (1) 1M x 36 |
21MB | NONE | (1) 256K x 36 | (1) 1M x 36 | (1) 4M x 36 |
21MB | NONE | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x 36 |
21MB | NONE | (1) 256K x 36 | (1) 4M x 36 | (1) 1M x 36 |
21MB | NONE | (1) 1M x 36 | (1) 4M x 36 | (1) 256K x 36 |
24MB | NONE | (1) 4M x 36 | NONE | (1) 2M x 36 |
24MB | NONE | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 |
24MB | NONE | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 |
24MB | NONE | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x 36 |
25MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 |
28MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 |
28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
32MB | NONE | NONE | (1) 4M x 36 | (1) 4M x 36 |
32MB | NONE | NONE | NONE | (1) 8M x 36 |
33MB | NONE | (1) 256K x 36 | NONE | (1) 8M x 36 |
33MB | NONE | (1) 4M x 36 | (1) 256K x 36 | (1) 4M x 36 |
33MB | NONE | (1) 256K x 36 | (1) 4M x 36 | (1) 4M x 36 |
33MB | NONE | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x 36 |
34MB | NONE | (1) 512K x 36 | NONE | (1) 8M x 36 |
34MB | NONE | (1) 8M x 36 | NONE | (1) 512K x 36 |
36MB | NONE | (1) 1M x 36 | NONE | (1) 8M x 36 |
36MB | NONE | (1) 4M x 36 | (1) 1M x 36 | (1) 4M x 36 |
36MB | NONE | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 |
36MB | NONE | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 |
36MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 |
40MB | NONE | (1) 2M x 36 | NONE | (1) 8M x 36 |
40MB | NONE | (1) 8M x 36 | NONE | (1) 2M x 36 |
48MB | NONE | (1) 4M x 36 | NONE | (1) 8M x 36 |
48MB | NONE | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
49MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x 36 |
52MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 |
64MB | NONE | NONE | NONE | (1) 16M x 36 |
64MB | NONE | (1) 8M x 36 | NONE | (1) 8M x 36 |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
65MB | NONE | NONE | (1) 256K x 36 | (1) 16M x 36 |
65MB | NONE | NONE | (1) 16M x 36 | (1) 256K x 36 |
66MB | NONE | (1) 16M x 36 | NONE | (1) 512K x 36 |
DRAM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
66MB | NONE | (1) 256K x 36 | (1) 256K x 36 | (1) 16M x 36 |
66MB | NONE | (1) 16M x 36 | (1) 256K x 36 | (1) 256K x 36 |
66MB | NONE | (1) 256K x 36 | (1) 16M x 36 | (1) 256K x 36 |
68MB | NONE | NONE | (1) 1M x 36 | (1) 16M x 36 |
68MB | NONE | NONE | (1) 16M x 36 | (1) 1M x 36 |
69MB | NONE | (1) 1M x 36 | (1) 256K x 36 | (1) 16M x 36 |
69MB | NONE | (1) 16M x 36 | (1) 256K x 36 | (1) 1M x 36 |
69MB | NONE | (1) 256K x 36 | (1) 1M x 36 | (1) 16M x 36 |
69MB | NONE | (1) 16M x 36 | (1) 1M x 36 | (1) 256K x 36 |
69MB | NONE | (1) 256K x 36 | (1) 16M x 36 | (1) 1M x 36 |
69MB | NONE | (1) 1M x 36 | (1) 16M x 36 | (1) 256K x 36 |
72MB | NONE | (1) 16M x 36 | NONE | (1) 2M x 36 |
72MB | NONE | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x 36 |
72MB | NONE | (1) 16M x 36 | (1) 1M x 36 | (1) 1M x 36 |
76MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x 36 |
80MB | NONE | NONE | (1) 4M x 36 | (1) 16M x 36 |
80MB | NONE | (1) 1M x 36 | (1) 16M x 36 | (1) 1M x 36 |
81MB | NONE | (1) 16M x 36 | (1) 256K x 36 | (1) 4M x 36 |
81MB | NONE | (1) 256K x 36 | (1) 4M x 36 | (1) 16M x 36 |
81MB | NONE | (1) 256K x 36 | (1) 16M x 36 | (1) 4M x 36 |
81MB | NONE | (1) 4M x 36 | (1) 16M x 36 | (1) 256K x 36 |
84MB | NONE | (1) 4M x 36 | (1) 1M x 36 | (1) 16M x 36 |
84MB | NONE | (1) 16M x 36 | (1) 1M x 36 | (1) 4M x 36 |
84MB | NONE | (1) 1M x 36 | (1) 4M x 36 | (1) 16M x 36 |
84MB | NONE | (1) 16M x 36 | (1) 4M x 36 | (1) 1M x 36 |
84MB | NONE | (1) 1M x 36 | (1) 16M x 36 | (1) 4M x 36 |
84MB | NONE | (1) 4M x 36 | (1) 16M x 36 | (1) 1M x 36 |
88MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x 36 |
96MB | NONE | (1) 16M x 36 | NONE | (1) 8M x 36 |
96MB | NONE | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x 36 |
96MB | NONE | (1) 16M x 36 | (1) 4M x 36 | (1) 4M x 36 |
96MB | NONE | (1) 4M x 36 | (1) 16M x 36 | (1) 4M x 36 |
97MB | (1) 16M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x 36 |
100MB | (1) 16M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 |
112MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x 36 |
112MB | (1) 16M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
112MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x 36 |
128MB | NONE | NONE | (1) 16M x 36 | (1) 16M x 36 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
128KB | (4) 32K x 8 | NONE | (1) 8K x 8 or (1) 32K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||
Size | JP3 | JP4 |
128KB | pins 2 & 3 closed | pins 2 & 3 closed |
256KB | pins 1 & 2 closed | pins 1 & 2 closed |
CPU TYPE CONFIGURATION | |||||
Type | JP8 | JP16 | JP17 | JP18 | JP19 |
CX M6 | 5 & 6 | Open | Open | Closed | Open |
SL80486SX | 1 & 2 | Closed | Closed | Open | Closed |
80486SX | Open | Closed | Closed | Open | Open |
CX M7 | 5 & 6 | Closed | Open | Closed | Open |
AM486DXLV-S | 3 & 4 | Closed | Closed | Open | Open |
SL80486DX | 1 & 2 | Closed | Closed | Open | Closed |
80486DX | Open | Closed | Closed | Open | Open |
80486DX2 | Open | Closed | Closed | Open | Open |
Pentium Overdrive | 1 & 2 | Closed | Closed | Open | Open |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (CON’T) | |||||
Type | JP21 | JP22 | JP23 | JP24 | JP25 |
CX M6 | 1 & 2 | Open | 2 & 3 | 1 & 2 | 1 & 2 |
SL80486SX | 1 & 2 | Open | 1 & 2 | 2 & 3 | 1 & 2 |
80486SX | 1 & 2 | Open | 2 & 3 | Open | 1 & 2 |
CX M7 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
AM486DXLV-S | 2 & 3 | 2 & 3 | 2 & 3 | Open | 1 & 2 |
SL80486DX | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
80486DX | 2 & 3 | 2 & 3 | 2 & 3 | Open | 1 & 2 |
80486DX2 | 2 & 3 | 2 & 3 | 2 & 3 | Open | 1 & 2 |
Pentium Overdrive | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (CON’T) | |||||
Type | JP27 | JP28 | JP29 | JP30 | JP31 |
CX M6 | Closed | Open | Closed | 4 & 5 | 4 & 5 |
SL80486SX | Open | Open | Open | 1 & 2 | 1 & 2 |
80486SX | Open | Open | Closed | Open | Open |
CX M7 | Closed | Open | Closed | 4 & 5 | 4 & 5 |
AM486DXLV-S | Open | Open | Open | 2 & 3 | 2 & 3 |
SL80486DX | Open | Open | Open | 1 & 2 | 1 & 2 |
80486DX | Open | Open | Closed | Open | Open |
80486DX2 | Open | Open | Closed | Open | Open |
Pentium Overdrive | Open | Closed | Open | 1 & 2 | 1 & 2 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |
Type | JP40 |
80486 | pins 1 & 2 closed, pins 3 & 4 open |
Note: The location of JP40 is unidentified. |
CPU SPEED CONFIGURATION | ||||
Speed | JP7 | JP26 | JP35 | JP36 |
25MHz | pins 1 & 2, 5 & 6 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
33MHz | pins 3 & 4, 5 & 6 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
40MHz | pins 1 & 2, 3 & 4 closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
50iMHz | pins 1 & 2, 5 & 6 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
50MHz | pins 1 & 2, 5 & 6 closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
66iMHz | pins 3 & 4, 5 & 6 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
VESA WAIT STATE CONFIGURATION | |
Wait states | JP40 |
0 wait states | pins 5 & 6 open |
1 wait state | pins 5 & 6 closed |
Note: The location of JP40 is unidentified. |
BUS SPEED CONFIGURATION | |
CPU speed | JP40 |
<= 33MHz | pins 7 & 8 open |
> 33MHz | pins 7 & 8 closed |
Note: The location of JP40 is unidentified. |