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Rockbox mail archiveSubject: Re: Memory/Settings Creation QuestionRe: Memory/Settings Creation Question
From: Brent Geery <fasttimes_at_mochamail.com>
Date: Sat, 03 May 2003 16:43:38 -0700 On Sun, 04 May 2003 00:50:05 +0200, Linus Nielsen Feltzing <linus_at_haxx.se> wrote: > Mike Holden wrote: > > Do the principles stated here still stand? It looks like currently the > > first 2 bits of 0xAE are used, so I can take up to 6 bits from bit 3 > > upwards to bit 8, and then any bytes from 0xAD downwards all the way to > > 0x00? > > Not all the way to 0x00. 0x00-0x2b are used for mirroring the RTC > information. > > > I'm looking to store the last used radio frequency, so need to store a > > value in the range 8000 to 11000, which can scale to 0-3000, and currently > > in increments of 5 (frequency increases by 0.05 Mhz), so could be scaled > > to 0-600, so long as we are settled on these, but these could still be up > > in the air, pending discussions on here. I can start off taking 2 bytes, > > giving plenty of range, and scale these later to use less space in the > > config block. > > I suggest you use 0.01MHz resolution. The possible frequency range is > 10MHz-160MHz, giving a range of 1000-16000. Take 2 bytes. What is the point of having 100Hz accuracy, when stations in the US have a frequency allocation of 200kHz, and I think 150(?) in Europe and elsewhere. -- BRENT - The Usenet typo king. :) Fast Times At Ridgemont High Info http://www.FastTimesAtRidgemontHigh.org Voted #87 - American Film Institute's Top 100 Funniest American FilmsReceived on 2003-05-04 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |