diff options
| author | Linus Nielsen Feltzing <linus@haxx.se> | 2002-07-28 11:46:27 +0000 |
|---|---|---|
| committer | Linus Nielsen Feltzing <linus@haxx.se> | 2002-07-28 11:46:27 +0000 |
| commit | fce2a2898244a10f8155fd3cae52e8ac2be1c8a6 (patch) | |
| tree | 577c878ce9aefc5abfcd96c423d709bb7079e856 /firmware | |
| parent | 5c682fb0cd23be43613961fedef59c9184b07cc2 (diff) | |
Hopefully fixed distortion and pitch problems on Player versions
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1478 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/mpeg.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/firmware/mpeg.c b/firmware/mpeg.c index 893ffe5dcb..6eaa6d5cfc 100644 --- a/firmware/mpeg.c +++ b/firmware/mpeg.c @@ -1239,14 +1239,16 @@ int mpeg_val2phys(int setting, int value) return result; } +static unsigned long mas_version_code; + void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, int avc) { #ifdef SIMULATOR volume = bass = treble = loudness = bass_boost = avc; #else + unsigned long val; #ifdef ARCHOS_RECORDER int rc; - unsigned long val; #else loudness = bass_boost = avc; #endif @@ -1292,7 +1294,35 @@ void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, i #ifndef ARCHOS_RECORDER mas_writereg(0x3b, 0x20); /* Don't ask why. The data sheet doesn't say */ mas_run(1); - sleep(HZ/10); + sleep(HZ); + + mas_readmem(MAS_BANK_D1, 0xff7, &mas_version_code, 1); + + /* Clear the upper 12 bits of the 32-bit samples */ + mas_writereg(0xc5, 0); + mas_writereg(0xc6, 0); + + /* We need to set the PLL for a 14.1318MHz crystal */ + if(mas_version_code == 0x0601) /* Version F10? */ + { + val = 0x5d9e8; + mas_writemem(MAS_BANK_D0, 0x32d, &val, 1); + val = 0xfffceb8d; + mas_writemem(MAS_BANK_D0, 0x32e, &val, 1); + val = 0x0; + mas_writemem(MAS_BANK_D0, 0x32f, &val, 1); + mas_run(0x475); + } + else + { + val = 0x5d9e8; + mas_writemem(MAS_BANK_D0, 0x36d, &val, 1); + val = 0xfffceb8d; + mas_writemem(MAS_BANK_D0, 0x36e, &val, 1); + val = 0x0; + mas_writemem(MAS_BANK_D0, 0x36f, &val, 1); + mas_run(0xfcb); + } #endif mp3buflen = mp3end - mp3buf; @@ -1307,6 +1337,10 @@ void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, i #ifndef ARCHOS_RECORDER mas_writereg(MAS_REG_KPRESCALE, 0xe9400); dac_config(0x04); /* DAC on, all else off */ + + val = 0x80000; + mas_writemem(MAS_BANK_D1, 0x7f8, &val, 1); + mas_writemem(MAS_BANK_D1, 0x7fb, &val, 1); #endif mpeg_sound_set(SOUND_BASS, bass); |