BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-8433AEP
Processor | 80486SX/CX486M7/CX486DX/AM486DX/AM486DX PLUS/UMC U5/80486DX/ CX486DX2/AM486DX2/AM486DX2 PLUS/80486DX2/AM486DX4/80486DX4/ SL Pentium Overdrive/Cyrix M1 |
Processor Speed | 25/33/40/66(internal)/75(internal)/80(internal)/100(internal)/120(internal)MHz |
Chip Set | AMD |
Max. Onboard DRAM | 64MB |
Cache | 128/256/512KB |
BIOS | AMI |
Dimensions | 220mm x 210mm |
I/O Options | PS/2 mouse port, parallel port, serial ports (2), 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Floppy drive interface | J4 | Turbo LED | J12 (pins 10 & 11) |
IDE interface (primary) | J5 | Reset switch | J12 (pins 12 & 13) |
Serial port 2 | J6 | Green PC connector | J12 (pins 17 - 19) |
IDE interface (secondary) | J8 | IDE interface LED | J12 (pins 20 - 22) |
Serial port 1 | J9 | Turbo switch | J12 (pins 23 & 24) |
Parallel port | J10 | Chassis fan power | JP2 |
External battery | J11 | 32-bit PCI slots | PCI1 - PCI3 |
Speaker | J12 (pins 1 - 4) | PS/2 mouse port | S1 |
Power LED & keylock | J12 (pins 5 - 9) |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | J11 | pins 2 & 3 closed |
CMOS memory clear | J11 | pins 3 & 4 closed | |
» | Factory configured - do not alter | J13 | N/A |
Flash BIOS voltage select 5v | JP22 | pins 2 & 3 closed | |
Flash BIOS voltage select 12v | JP22 | pins 1 & 2 closed | |
Flash BIOS EPROM | JP22 | Open | |
» | Internal battery enabled | JP25 | Closed |
Internal battery disabled | JP25 | Open | |
» | Power good signal detect from power supply | JP26 | pins 1 & 2 closed |
Power good signal detect from board | JP26 | pins 2 & 3 closed | |
» | Factory configured - do not alter | U2 | N/A |
» | Factory configured - do not alter | U3 | N/A |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
2MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
2MB | NONE | NONE | (1) 1M x 36 | (1) 1M x 36 |
2MB | (1) 2M x 36 | NONE | NONE | NONE |
4MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
4MB | NONE | NONE | (1) 2M x 36 | (1) 2M x 36 |
4MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
4MB | (1) 4M x 36 | NONE | NONE | NONE |
6MB | (1) 2M x 36 | (1) 4M x 36 | NONE | NONE |
6MB | NONE | NONE | (1) 2M x 36 | (1) 4M x 36 |
8MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
8MB | NONE | NONE | (1) 4M x 36 | (1) 4M x 36 |
8MB | (1) 8M x 36 | NONE | NONE | NONE |
10MB | (1) 2M x 36 | (1) 8M x 36 | NONE | NONE |
10MB | NONE | NONE | (1) 2M x 36 | (1) 8M x 36 |
12MB | (1) 4M x 36 | (1) 8M x 36 | NONE | NONE |
12MB | NONE | NONE | (1) 4M x 36 | (1) 8M x 36 |
16MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
16MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
16MB | NONE | NONE | (1) 8M x 36 | (1) 8M x 36 |
16MB | (1) 16M x 36 | NONE | NONE | NONE |
18MB | (1) 2M x 36 | (1) 16M x 36 | NONE | NONE |
18MB | NONE | NONE | (1) 2M x 36 | (1) 16M x 36 |
20MB | (1) 4M x 36 | (1) 16M x 36 | NONE | NONE |
20MB | NONE | NONE | (1) 4M x 36 | (1) 16M x 36 |
24MB | (1) 8M x 36 | (1) 16M x 36 | NONE | NONE |
24MB | NONE | NONE | (1) 8M x 36 | (1) 16M x 36 |
32MB | (1) 32M x 36 | NONE | NONE | NONE |
33MB | (1) 1M x 36 | (1) 32M x 36 | NONE | NONE |
33MB | NONE | NONE | (1) 1M x 36 | (1) 32M x 36 |
34MB | (1) 2M x 36 | (1) 32M x 36 | NONE | NONE |
DRAM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
34MB | NONE | NONE | (1) 2M x 36 | (1) 32M x 36 |
36MB | (1) 4M x 36 | (1) 32M x 36 | NONE | NONE |
36MB | NONE | NONE | (1) 4M x 36 | (1) 32M x 36 |
40MB | (1) 8M x 36 | (1) 32M x 36 | NONE | NONE |
40MB | NONE | NONE | (1) 8M x 36 | (1) 32M x 36 |
48MB | (1) 16M x 36 | (1) 32M x 36 | NONE | NONE |
48MB | NONE | NONE | (1) 16M x 36 | (1) 32M x 36 |
64MB | (1) 32M x 36 | (1) 32M x 36 | NONE | NONE |
64MB | NONE | NONE | (1) 32M x 36 | (1) 32M x 36 |
CACHE CONFIGURATION | ||
Size | Bank 0 | TAG |
128KB | (4) 32K x 8 | (1) 8K x 8 |
256KB (A) | (4) 64K x 8 | (1) 16K x 8 |
256KB (B) | (4) 64K x 8 | (1) 32K x 8 |
512KB | (4) 64K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||
Size | JP20 | JP21 |
128KB | pins 1 & 2 closed | Open |
256KB (A) | Open | pins 1 & 2 closed |
256KB (B) | pins 1 & 2 closed | pins 2 & 3 closed |
512KB | pins 2 & 3 closed | pins 2 & 3 closed |
CPU TYPE CONFIGURATION | ||||
Type | JP5 | JP6 | JP7 | JP8 |
80486SX | 5 & 6 | Open | 2 & 3, 4 & 5 | Open |
CX486DX | 1 & 2, 4 & 5 | Open | 1 & 2, 4 & 5 | 1 & 2 |
AM486DX | 1 & 2, 4 & 5 | Open | 2 & 3, 4 & 5 | Open |
AM486DX PLUS WB | 1 & 2, 4 & 5 | Open | 1 & 2 | Open |
AM486DX PLUS WT | 1 & 2, 4 & 5 | 5 & 6 | 1 & 2, 4 & 5 | Open |
U5 | Open | Open | 4 & 5 | Open |
80486DX | 1 & 2, 4 & 5 | Open | 2 & 3, 4 & 5 | Open |
CX486DX2 | 1 & 2, 4 & 5 | 1 & 2 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 |
AM486DX2 | 1 & 2, 4 & 5 | 4 & 5 | 2 & 3, 4 & 5 | Open |
AM486DX2 PLUS WB | 1 & 2, 4 & 5 | 3 & 4 | 1 & 2 | Open |
AM486DX2 PLUS WT | 1 & 2, 4 & 5 | 3 & 4, 5 & 6 | 1 & 2, 4 & 5 | Open |
80486DX2 | 1 & 2, 4 & 5 | 4 & 5 | 2 & 3, 4 & 5 | Open |
CX486DX4 | 1 & 2, 4 & 5 | Open | 1 & 2, 4 & 5 | 1 & 2 |
AM486DX4 | 1 & 2, 4 & 5 | Open | 2 & 3, 4 & 5 | Open |
AM486DX4 PLUS WB | 1 & 2, 4 & 5 | Open | 1 & 2 | Open |
AM486DX2 PLUS WT | 1 & 2, 4 & 5 | 5 & 6 | 1 & 2, 4 & 5 | Open |
80486DX4 | 1 & 2, 4 & 5 | Open | 1 & 2, 4 & 5 | Open |
CPU TYPE CONFIGURATION (CON’T) | ||||
Type | JP5 | JP6 | JP7 | JP8 |
P24D | 1 & 2, 4 & 5 | Open | 1 & 2 | Open |
M1 | 1 & 2, 4 & 5 | Open | 1 & 2, 4 & 5 | Open |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (CON’T) | ||||
Type | RN6 | RN7 | RN8 | RN9 |
80486SX | Not installed | Installed | Not installed | Installed |
CX486DX | Not installed | Not installed | Installed | Not installed |
AM486DX | Not installed | Installed | Not installed | Installed |
AM486DX PLUS WB | Not installed | Installed | Not installed | Installed |
AM486DX PLUS WT | Not installed | Installed | Not installed | 1 - 4 installed only |
U5 | Installed | Not installed | Not installed | Not installed |
80486DX | Not installed | Installed | Not installed | Installed |
CX486DX2 | Not installed | Not installed | Installed | Not installed |
AM486DX2 | Not installed | Installed | Not installed | Installed |
AM486DX2 PLUS WB | Not installed | Installed | Not installed | Installed |
AM486DX2 PLUS WT | Not installed | Installed | Not installed | 1 - 4 installed only |
80486DX2 | Not installed | Installed | Not installed | Installed |
CX486DX4 | Not installed | Not installed | Installed | Not installed |
AM486DX4 | Not installed | Installed | Not installed | Installed |
AM486DX4 PLUS WB | Not installed | Installed | Not installed | Installed |
AM486DX4 PLUS WT | Not installed | Installed | Not installed | 1 - 4 installed only |
80486DX4 | Not installed | Installed | Not installed | Installed |
P24D | Not installed | Installed | Not installed | Installed |
M1 | Not installed | Installed | Not installed | 1 - 4 installed only |
Note: Pins designated should be in the closed position. |
CPU SPEED CONFIGURATION | ||||
Speed | JP11 | JP16 | JP18 | JP19 |
25MHz | pins 1 & 2 closed | Open | Open | Open |
33MHz | pins 1 & 2 closed | Open | Closed | Closed |
40MHz | pins 2 & 3 closed | Closed | Open | Closed |
66iMHz | pins 1 & 2 closed | Open | Closed | Closed |
75iMHz | pins 1 & 2 closed | Open | Open | Open |
80iMHz | pins 2 & 3 closed | Closed | Open | Closed |
100iMHz | pins 1 & 2 closed | Open | Closed | Closed |
120iMHz | pins 2 & 3 closed | Closed | Open | Closed |
CPU VOLTAGE CONFIGURATION | |||
Voltage | JP1 | JP3 | JP4 |
3.45v | pins 2 & 3 closed | Open | Open |
4v | pins 1 & 2 closed | Open | Open |
5v | pins 2 & 3 closed | Closed | Closed |
DMA CONFIGURATION | ||
DMA | JP9 | JP10 |
DMA 1 | pins 1 & 2 closed | pins 2 & 3 closed |
DMA 3 | pins 2 & 3 closed | pins 1 & 2 closed |