YOUNG MICRO SYSTEMS, INC.
VEGA 486G-VIP (REV. 1.0)
|
Processor |
80486SX/80486DX/80486DX2/80486DX4/P24D/Pentium Overdrive |
|
Processor Speed |
25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz |
|
Chip Set |
Intel |
|
Max. Onboard DRAM |
128MB |
|
Cache |
128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slot, 32-bit PCI slots (3), IDE interface, PS/2 mouse connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
CN1 |
IDE interface LED |
CN6 |
|
Reset switch |
CN2 |
IDE interface |
CN7 |
|
Turbo LED |
CN3 |
32-bit PCI slots |
PC1 - PC3 |
|
Turbo switch |
CN4 |
32-bit VESA local bus slots |
SL1 |
|
PS/2 mouse connector |
CN5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
IDE interface enabled |
JP4 |
pins 1 & 2 closed |
|
IDE interface disabled |
JP4 |
pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
JP9 |
N/A |
|
|
Flash BIOS write protect disabled |
JP10 |
pins 2 & 3 closed |
|
Flash BIOS write protect enabled |
JP10 |
pins 1 & 2 closed | |
|
|
Mouse IRQ12 enabled |
JP15 |
Closed |
|
Mouse IRQ12 disabled |
JP15 |
Open | |
|
|
Monitor type select color |
JP16 |
Closed |
|
Monitor type select monochrome |
JP16 |
Open | |
|
|
SMI disabled |
JP25 |
pins 2 & 3 closed |
|
SMI enabled |
JP25 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 256K x 36 |
NONE |
NONE |
NONE |
|
4MB |
(1) 512K x 36 |
(1) 512K x 36 |
NONE |
NONE |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
8MB |
(1) 2M x 36 |
NONE |
NONE |
NONE |
|
16MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
32MB |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
|
64MB |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M 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 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 32K x 8 |
|
256KB |
(4) 64K x 8 |
NONE |
(1) 32K 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 |
|
512KB |
(4) 64K x 8 |
(4) 64K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JC1 |
JC2 |
JC3 |
JC4 |
JC5 |
|
128KB |
2 & 3 |
1 & 2 |
Open |
Open |
Open |
|
256KB |
1 & 2 |
2 & 3 |
Open |
Closed |
Open |
|
256KB |
1 & 2 |
1 & 2 |
Closed |
Closed |
Open |
|
512KB |
1 & 2 |
1 & 2 |
Open |
Closed |
Closed |
|
512KB |
1 & 2 |
1 & 2 |
Closed |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | |||||
|
Type |
JP2 |
JP3 |
JP26 |
JP43 |
JR57 |
|
80486SX |
pins 2 & 3 closed |
Open |
Open |
Open |
Closed |
|
80486DX |
pins 1 & 2 closed |
Open |
Open |
Open |
Closed |
|
80486DX2 |
pins 1 & 2 closed |
Closed |
Closed |
Open |
Closed |
|
80486DX4 |
pins 1 & 2 closed |
Closed |
Closed |
Open |
Closed |
|
P24D |
pins 1 & 2 closed |
Closed |
Closed |
Open |
Open |
|
Pentium Overdrive |
pins 1 & 2 closed |
Closed |
Closed |
Open |
Closed |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP7 |
JP8 |
JP40 |
JP41 |
|
25MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
Open |
Closed |
|
33MHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
Closed |
Open |
|
40MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
Open |
Open |
|
50iMHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
Open |
Closed |
|
66iMHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
Closed |
Open |
|
75iMHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
Open |
Closed |
|
100iMHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
Closed |
Open |
|
CPU SPEED CONFIGURATION (80486DX4 ONLY) | |
|
Speed |
JP1 |
|
2x |
pins 1 & 2 closed |
|
2.5x |
pins 2 & 3 closed |
|
3x |
Open |
|
CPU VOLTAGE CONFIGURATION | |||
|
Voltage |
JV0 |
JV3 |
JV4 |
|
3.3V |
Open |
Open |
Open |
|
5.0V |
Closed |
Closed |
Closed |
|
VESA WAIT STATE CONFIGURATION | |
|
Wait states |
JP36 |
|
0 wait states |
Open |
|
1 wait state |
Closed |
|
BUS SPEED CONFIGURATION | |
|
CPU speed |
JP37 |
|
<= 33MHz |
Open |
|
> 33MHz |
Closed |
|
CMOS CONFIGURATION | ||
|
CPU Type |
JP12 |
JP13 |
|
CMOS memory normal operation |
Closed |
Closed |
|
CMOS memory clear |
Open |
Open |