GIGA-BYTE TECHNOLOGY CO., LTD.
GA-486IS
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Intel |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
230mm x 218mm |
|
I/O Options |
32-bit PCI local bus slots (4) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J1 |
Power down mode LED |
JP27 |
|
Speaker |
J2 |
32-bit PCI Local bus slot |
S1 |
|
Turbo LED |
J3 |
32-bit PCI Local bus slot |
S2 |
|
External power control port |
J5 |
32-bit PCI Local bus slot |
S3 |
|
Reset switch |
JP9 |
32-bit PCI Local bus slot |
S4 |
|
Turbo switch |
JP21 | ||
c
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
CMOS memory normal operation |
J4 |
Open |
|
CMOS memory clear |
J4 |
Closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 3 |
|
2MB |
(2) 1M x 36 |
NONE |
|
4MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
4MB |
(2) 2M x 36 |
NONE |
|
6MB |
(2) 2M x 36 |
(2) 1M x 36 |
|
8MB |
(2) 2M x 36 |
(2) 2M x 36 |
|
8MB |
(2) 4M x 36 |
NONE |
|
10MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
12MB |
(2) 4M x 36 |
(2) 2M x 36 |
|
16MB |
(2) 4M x 36 |
(2) 4M x 36 |
|
16MB |
(2) 8M x 36 |
NONE |
|
18MB |
(2) 8M x 36 |
(2) 1M x 36 |
|
20MB |
(2) 8M x 36 |
(2) 2M x 36 |
|
24MB |
(2) 8M x 36 |
(2) 4M x 36 |
|
32MB |
(2) 8M x 36 |
(2) 8M x 36 |
|
32MB |
(2) 16M x 36 |
NONE |
|
34MB |
(2) 16M x 36 |
(2) 1M x 36 |
|
36MB |
(2) 16M x 36 |
(2) 2M x 36 |
|
40MB |
(2) 16M x 36 |
(2) 4M x 36 |
|
48MB |
(2) 16M x 36 |
(2) 8M x 36 |
|
64MB |
(2) 16M x 36 |
(2) 16M x 36 |
|
64MB |
(2) 32M x 36 |
NONE |
|
128MB |
(2) 32M x 36 |
(2) 32M 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) 16K x 8 |
|
512KB |
(4) 128K x 8 |
NONE |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
J6 |
J7 |
J9 |
JP11 |
JP12 |
|
64KB |
Open |
Open |
Open |
Closed |
Closed |
|
128KB |
Open |
Closed |
Open |
Closed |
Open |
|
256KB |
Closed |
Closed |
Open |
Open |
Closed |
|
512KB |
Closed |
Closed |
Closed |
Open |
Open |
|
CPU TYPE CONFIGURATION | |
|
Type |
JP10 |
|
80486SX |
pins 2 & 3 closed |
|
80487SX |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 closed |
|
ODP486SX |
pins 1 & 2 closed |
|
80486DX2 |
pins 1 & 2 closed |
|
Pentium Overdrive |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
JP7 |
JP18 |
|
25MHz |
pins 2 & 3 closed |
Closed |
|
33MHz |
pins 1 & 2 closed |
Open |
|
50iMHz |
pins 2 & 3 closed |
Closed |
|
66iMHz |
pins 1 & 2 closed |
Open |
|
PCI IRQ INTERRUPT CONFIGURATION | ||||
|
IRQ |
JP20 |
JP21 |
JP22 |
JP23 |
|
9 |
Closed |
Open |
Open |
Open |
|
10 |
Open |
Closed |
Open |
Open |
|
11 |
Open |
Open |
Closed |
Open |
|
14 |
Open |
Open |
Open |
Closed |