https://en.m.wikipedia.org/wiki/Rotary_encoder
^ look at the section on incremental encoders.
The interrupt just causes it to store the outputs of the encoders (it's visible as an 8-bit input port), then schedule further processing the next time the OS is called.
The Z80 is running at 8MHz, pretty snappy, so the interrupt response time should be quick enough provided it's not serving lots of higher priority interrupts...but yes it is cutting it closer than I'd like.
Electrotopia⚡️
npub1g8…kwa56
2025-03-08 22:11:37 UTC
in reply to nevent1q…zv9f
Author Public Key
npub1g8rkdfne0p6ktkkylyr25fzdpm7sctn86aydsl29h0lcc9gd6desakwa56Seen on
wss://relay.momostr.pinkPublished at
2025-03-08 22:11:37 UTCEvent JSON
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"content": "https://en.m.wikipedia.org/wiki/Rotary_encoder \n\n^ look at the section on incremental encoders.\n\nThe interrupt just causes it to store the outputs of the encoders (it's visible as an 8-bit input port), then schedule further processing the next time the OS is called. \n\nThe Z80 is running at 8MHz, pretty snappy, so the interrupt response time should be quick enough provided it's not serving lots of higher priority interrupts...but yes it is cutting it closer than I'd like.",
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