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| author | Torbjörn Andersson | 2006-03-01 07:21:51 +0000 |
|---|---|---|
| committer | Torbjörn Andersson | 2006-03-01 07:21:51 +0000 |
| commit | 55739f1715fee58b2dbf3ba82198daad239c9a23 (patch) | |
| tree | 6163a3e6e66a3ad66e81bbed1173efbf013265f9 /engines/kyra | |
| parent | 90cbe402b2efbb9e9bcdc64e9262738ef2623a2c (diff) | |
| download | scummvm-rg350-55739f1715fee58b2dbf3ba82198daad239c9a23.tar.gz scummvm-rg350-55739f1715fee58b2dbf3ba82198daad239c9a23.tar.bz2 scummvm-rg350-55739f1715fee58b2dbf3ba82198daad239c9a23.zip | |
Cleaned up updateCallback35() and renamed it setAMDepth(). It looks like the
_unkOutputByte2 variable is there to keep track of the current value of the
BD register (AM Depth / Vibrato Depth / Rhythm)
svn-id: r20984
Diffstat (limited to 'engines/kyra')
| -rw-r--r-- | engines/kyra/sound_adlib.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/engines/kyra/sound_adlib.cpp b/engines/kyra/sound_adlib.cpp index 66a743c4bd..e7a539c852 100644 --- a/engines/kyra/sound_adlib.cpp +++ b/engines/kyra/sound_adlib.cpp @@ -219,7 +219,7 @@ private: int updateCallback32(uint8 *&dataptr, OutputState &state, uint8 value); int updateCallback33(uint8 *&dataptr, OutputState &state, uint8 value); int updateCallback34(uint8 *&dataptr, OutputState &state, uint8 value); - int updateCallback35(uint8 *&dataptr, OutputState &state, uint8 value); + int setAMDepth(uint8 *&dataptr, OutputState &state, uint8 value); int updateCallback36(uint8 *&dataptr, OutputState &state, uint8 value); int updateCallback37(uint8 *&dataptr, OutputState &state, uint8 value); int updateCallback38(uint8 *&dataptr, OutputState &state, uint8 value); @@ -1201,12 +1201,13 @@ int AdlibDriver::updateCallback34(uint8 *&dataptr, OutputState &state, uint8 val return 0; } -int AdlibDriver::updateCallback35(uint8 *&dataptr, OutputState &state, uint8 value) { - value &= 1; - value <<= 7; - _unkOutputByte2 = (_unkOutputByte2 & 0x7F) | value; +int AdlibDriver::setAMDepth(uint8 *&dataptr, OutputState &state, uint8 value) { + if (value & 1) + _unkOutputByte2 |= 0x80; + else + _unkOutputByte2 &= 0x7F; - // AM depth / Vibrato depth / Rhythm control + // The AM Depth bit is set or cleared, the others remain unchanged output0x388(0xBD00 | _unkOutputByte2); return 0; } @@ -1740,7 +1741,7 @@ const AdlibDriver::ParserOpcode AdlibDriver::_parserOpcodeTable[] = { // 44 COMMAND(updateCallback33), COMMAND(updateCallback34), - COMMAND(updateCallback35), + COMMAND(setAMDepth), COMMAND(updateCallback36), // 48 |