Home▸ Forums▸ 68kMLA▸ Why the unusual frequency? — #23
Post #23 by MarkS
Source Forum68kMLA
CategoryHardware
Post DateThu, 19 Nov 2009 - 19:56
Original URLhttps://68kmla.org/bb/threads/why-the-unusual-frequency.18919/
Post
The RTClock / calendar / PRAM chip has its own 32KHz crystal. Everything else runs off the "16MHz" clock. If you don't care about serial baud rates, floppy read / write, or video scan rates, you can experiment with over / under clocking.
Click to expand...
The video rate would be the reason to do this. Getting it from 15.6677 to 16 MHz would make it much easier to read. Nothing now runs off such an odd frequency and reading any data clocked off of that frequency presents some rather difficult challenges. But hey, Apple saved a buck or two on a baud frequency generator! :disapprove:

Disclaimer: MacTrove does not claim rights to any software on the site. To the best of our knowledge, these titles have been discontinued by their publishers. If you know otherwise, please contact us and we will remove them accordingly. Thank you for your attention.