Posted By
BSZ
on 2021-12-01
16:14:54
|  Re: Could someone run test software for me?
IRQTEST3 prints 258 or 257. IRQTEST4 prints 492, 490, 491, 486, 495, ... It is strange that they are so different. Could this have something to do with the slow baud rate? Some ACIA's internal state is updated when a bit time expires. (Many CPU instructions can run during the bit time.)
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