Any way to change FSB in Pcem?

[ovctvct]

I couldn't find a way to change FSB clock to allow CPU underclock or overclock in pcem, yes, I am using v10,any ideas?

[neozeed]

I couldn't find a way to change FSB clock to allow CPU underclock or overclock in pcem, yes, I am using v10,any ideas?

I've done it in source to have a pentium "underdrive" clocked around 40mhz and 20mhz

[SarahWalker]

What are you trying to achieve here? PCem doesn't really emulate an FSB that would have much effect on performance in general.

[ovctvct]

I couldn't find a way to change FSB clock to allow CPU underclock or overclock in pcem, yes, I am using v10,any ideas?

I've done it in source to have a pentium "underdrive" clocked around 40mhz and 20mhz

How exactly? EDIT: I found it myself.

[Battler]

PCem has no way to underclock a CPU, PCem-X, however, now has a Turbo option which is enabled by default and halves the clock speed when disabled (so you can run a Pentium 75 at 37.5 MHz for example).

[ovctvct]

Success! I edited the Pcem-x source code(the cpu.c file to be exact) to get an Overdrive at 25 MHz!

25mhzoverdrive.png (48.05 KiB) Viewed 7380 times

[Battler]

And again, why are you discussing PCem-X on the PCem forum?