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jjmz / ula-vhdl

ZX81 ULA replacement - vhdl for xc9500xl
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U3 and U5 in schematic #1

Closed WellsWang closed 1 year ago

WellsWang commented 1 year ago

Should U3 be 1117-3.3? provide a 3.3v power source? Spec of U5 is 26Mhz active crystal oscillator？

Thanks.

jjmz commented 1 year ago

Yes U3 is a 3.3 voltage regulator - 1117-3.3 is just fine.

U5 is a Crystal oscillator : ordered this one : https://fr.farnell.com/multicomp/mcsjk-6nc2-26-00-25-b/oscillateur-26mhz-7mm-x-5mm-cmos/dp/2854378