Casio G486VPB Jumpers JP15, JP17 and JP19 CPU External Clock Selection

PCI/ISA System Board
20
External25MHz33MHz *40MHz50MHz
CPU Clock Speed
Internal25/50MHz33/66/100MHz40/80MHz50MHz
CPU Clock Speed
Pentium OverDrive63MHz83MHz
Internal Clock Speed
Jumpers JP15, JP17 and JP19
CPU External Clock Selection
25MHz
1
3
2
JP15 2-3 On, JP17 1-2 On
and JP19 2-3 On:
25MHz
JP19
JP17
JP15
33MHz *
1
3
2
JP15 2-3 On, JP17 2-3 On
and JP19 1-2 On:
33MHz (Default)
JP19
JP17
JP15
40MHz
1
3
2
JP15 1-2 On, JP17 1-2 On
and JP19 2-3 On:
40MHz
JP19
JP17
JP15
50MHz
1
3
2
JP15 1-2 On, JP17 2-3 On
and JP19 1-2 On:
50MHz
JP19
JP17
JP15