Hi forum, this is my first post!

Been playing around with Grant Searle's 6502 design, using a W65C02 and EF68B50 ACIA. Grant's design uses a 1.8432MHz clock which the ACIA internally divides by 16 to arrive at 115,200 baud. This works great the way it is. I want to start ramping up the clock frequency. The oscillators that I have tend to be whole numbers, like 2MHz, 4MHz, 8MHz etc which don't divide into standard baud rates.

My noob question is: Can the ACIA have its own clock, whilst the rest of the system uses a different clock frequency? I could just try it...

Totally posted this in the wrong forum! Apologies...

Welcome! Don't worry, Garth can move a post to another section.

Yes, it's normal to have a baud-rate crystal as well as a main-system crystal - for exactly this reason!

Edit: just to note, in general, a clock can oscillator is preferable to a crystal, so I'm speaking loosely there.

Thank you

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x86?  We ain't got no x86.  We don't NEED no stinking x86!

Yes, just try it. Serial port can handle about 5% deviation in frequency. 2MHz is 8% above 1.8432, but you may be surprised how good the communication is, enough to let you know the device is running OK.
Bill