furnace/doc/7-systems/watarasv.md
2025-11-19 19:17:11 -05:00

28 lines
1.4 KiB
Markdown

# Watara Supervision
a failed competitor of Game Boy, straight from Taiwan. released in 1992, it had a tilting screen, $50 price tag, very fast 4 MHz 6502-like CPU, framebuffer graphics and sound capabilities similar to Game Boy.
these are 2 pulse wave channels (same as on GB), barely working PCM channel and noise channel, also not unlike Game Boy. no hardware envelopes or zombie mode, though.
## effects
- `12xx`: **set duty cycle/noise mode.**
- range is `0` to `3` for pulse and `0` to `1` for noise.
## info
this chip uses the [Watara Supervision](../4-instrument/watarasv.md) and [Generic Sample](../4-instrument/sample.md) instrument editors.
### sample info
the sample channel is a 4-bit DMA channel with 4 playback frequencies (1953.125, 3906.25, 7812.5, and 15625) assigned to the notes C, C#, D, and D# in all octaves.
- note that these frequencies will differ if a custom clock rate is used.
max sample size is 4 kilobytes (8192 samples), samples are padded to multiples of 32 samples, and loop points are ignored.
## chip config
the following options are available in the Chip Manager window:
- **Swap noise duty cycles**: enabled by default. when enabled, short noise is on odd-indexed duty cycles, like on Game Boy, rather than even.
- **Stereo pulse waves**: disabled by default. when enabled, it forces pulse channel 1 to the right output channel and second pulse to the left output channel.