Acer 486 - Cpu Type Selection

System Board 1-7
Table 1-3 CPU Type Selection
486
1
486 WB
2
Pentium
OverDrive
AMD
486/DX2
AMD
486/DX4
Cyrix
IBM
TI
JP11 1-2 1-2 1-2 1-2 1-2 2-3 2-3
JP12 1-2 2-3 2-3 1-2 1-2 1-2 2-3
JP13 1-2 1-2 1-2 1-2 1-2 1-2 2-3
JP18 2-3 1-2 1-2 2-3 2-3 2-3 2-3
JP20 2-3 2-3 2-3 2-3 2-3 1-2 2-3
JP30-32 Open Open Open Open Open Closed Open
JP33 1-2 1-2 1-2 1-2 1-2 2-3 1-2
JP34-36 Closed Closed Closed Open Open Open Open
JP39 1-2, 4-5 1-2, 4-5 1-2, 4-5 1-2, 4-5 1-2, 4-5 1-2, 4-5 2-3, 5-6
JP40-41 2-3 2-3 2-3 1-2 1-2 2-3 2-3
JP42 2-3 2-3 2-3 2-3 2-3 2-3 1-2
JP43 Open Open Open Open Open Open Open
JP46 1-2 2-3 2-3 1-2 1-2 1-2 1-2
JP47 1-2 1-2 1-2 1-2 1-2 2-3 1-2
JP48 Open Open Open Closed Open Open Open
Table 1-4 Cache RAM Size Selection
JP24 JP25 JP26 Cache Size
Open Closed 1-2 128 KB
Closed Closed 2-3 256 KB
1
Intel 486SX, SX2, DX, DX2 and DX4
2
Intel 486DX2 and DX4 with write-back internal cache