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doc/7-systems/dac.md
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# Generic PCM DAC # Generic PCM DAC
a sample channel, with freely selectable rate, mono/stereo and bit depth settings. a sample channel, with freely selectable rate, mono/stereo and bit depth settings.
with it, you can emulate PCM DACs found in Williams arcade boards, Sound Blasters, MSX TurboR, Atari STe, NEC PC-9801-86, among others. with it, you can emulate PCM DACs found in Williams arcade boards, Sound Blasters, MSX TurboR, Atari STe, NEC PC-9801-86, among others.
## effects ## effects
none yet. none yet.
## info ## info
this chip uses the [Generic Sample](../4-instrument/sample.md) instrument editor. this chip uses the [Generic Sample](../4-instrument/sample.md) instrument editor.

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doc/7-systems/es5506.md
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# Ensoniq ES5506 (OTTO) # Ensoniq ES5506 (OTTO)
sample-based synthesis chip used in a bunch of Taito arcade machines and PC sound cards like Soundscape Elite. a variant of it was the heart of the well-known Gravis Ultrasound. sample-based synthesis chip used in a bunch of Taito arcade machines and PC sound cards like Soundscape Elite. a variant of it was the heart of the well-known Gravis Ultrasound.
it has a whopping 32 channels of 16-bit PCM and: it has a whopping 32 channels of 16-bit PCM and:
- real time digital filters - real time digital filters
- linear interpolation - linear interpolation
- loop start and stop positions for each voice (bidirectional and reverse looping) - loop start and stop positions for each voice (bidirectional and reverse looping)
- internal volume multiplication and stereo panning - internal volume multiplication and stereo panning
- hardware support for short envelopes - hardware support for short envelopes
## effects ## effects
- `10xx`: **set waveform.** - `10xx`: **set waveform.**
- `11xx`: **set filter mode.** values are `0` through `3`. - `11xx`: **set filter mode.** values are `0` through `3`.
- `120x`: **set pause (bit 0).** pauses the sample until the bit is unset; it will then resume where it left off. - `120x`: **set pause (bit 0).** pauses the sample until the bit is unset; it will then resume where it left off.
- `14xx`: **set filter coefficient K1 low byte.** - `14xx`: **set filter coefficient K1 low byte.**
- `15xx`: **set filter coefficient K1 high byte.** - `15xx`: **set filter coefficient K1 high byte.**
- `16xx`: **set filter coefficient K2 low byte.** - `16xx`: **set filter coefficient K2 low byte.**
- `17xx`: **set filter coefficient K2 high byte.** - `17xx`: **set filter coefficient K2 high byte.**
- `18xx`: **set filter coefficient K1 slide up.** - `18xx`: **set filter coefficient K1 slide up.**
- `19xx`: **set filter coefficient K1 slide down.** - `19xx`: **set filter coefficient K1 slide down.**
- `1Axx`: **set filter coefficient K2 slide up.** - `1Axx`: **set filter coefficient K2 slide up.**
- `1Bxx`: **set filter coefficient K2 slide down.** - `1Bxx`: **set filter coefficient K2 slide down.**
- `20xx`: **set envelope count.** - `20xx`: **set envelope count.**
- `22xx`: **set envelope left volume ramp.** - `22xx`: **set envelope left volume ramp.**
- `23xx`: **set envelope right volume ramp.** - `23xx`: **set envelope right volume ramp.**
- `24xx`: **set envelope filter coefficient K1 ramp.** - `24xx`: **set envelope filter coefficient K1 ramp.**
- `25xx`: **set envelope filter coefficient K1 ramp (slower).** - `25xx`: **set envelope filter coefficient K1 ramp (slower).**
- `26xx`: **set envelope filter coefficient K2 ramp.** - `26xx`: **set envelope filter coefficient K2 ramp.**
- `27xx`: **set envelope filter coefficient K2 ramp (slower).** - `27xx`: **set envelope filter coefficient K2 ramp (slower).**
- `3xxx`: **set coarse filter coefficient K1.** - `3xxx`: **set coarse filter coefficient K1.**
- `4xxx`: **set coarse filter coefficient K2.** - `4xxx`: **set coarse filter coefficient K2.**
- `81xx`: **set panning (left channel).** - `81xx`: **set panning (left channel).**
- `82xx`: **set panning (right channel).** - `82xx`: **set panning (right channel).**
- `88xx`: **set panning (rear channels).** - `88xx`: **set panning (rear channels).**
- `89xx`: **set panning (rear left channel).** - `89xx`: **set panning (rear left channel).**
- `8Axx`: **set panning (rear right channel).** - `8Axx`: **set panning (rear right channel).**
- `9xxx`: **set sample offset.** - `9xxx`: **set sample offset.**
- resets sample position to `xxx * 0x100`. - resets sample position to `xxx * 0x100`.
- `DFxx`: **set sample playback direction.** - `DFxx`: **set sample playback direction.**
## info ## info
this chip uses the [ES5506](../4-instrument/es5506.md) instrument editor. this chip uses the [ES5506](../4-instrument/es5506.md) instrument editor.