Re: Newbie looking to figure out how to do a port!
[email protected] (Peter Seebach) Mon, 20 Feb 2006 05:21:44 -0600
| Newsgroups | gmane.os.netbsd.devel.ports |
|---|---|
| Message-ID | <[email protected]> |
In message <[email protected]>, der Mouse wr ites: >> #define BASE_BAUD (((400*1000000)/((0x3C>>1)+1))/16) > >> What I don't get is... > >> Why would anyone write "/31" as "/((0x3C>>1)+1)"? > >Perhaps because it more closely mirrors the way some external document >specifies something? I've seen such things often enough. > >After all, why would anyone write 12903225 as (400*1000000)/31, either? The board documentation says the UART clock is processor speed over 31. But yeah, I was thinking there might be some document somewhere. -s