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furnace/doc/7-systems/zxbeep.md

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lots of doc updates
2022-10-16 05:53:05 +00:00
# ZX Spectrum beeper
docs update (#519) * docs update mentions of fractal, new chips documentation, and other minor stuff * add a link to the Fractal repo as suggested by @breakthetargets * better wording, less typos
2022-06-06 14:49:39 +00:00
lots of doc updates
2022-10-16 05:53:05 +00:00
rather than having a dedicated sound synthesizer, early ZX Spectrum models had one piezo beeper, controlled by Z80 CPU and ULA chip. its capabilities should be on par with an IBM PC speaker... right?
docs update (#519) * docs update mentions of fractal, new chips documentation, and other minor stuff * add a link to the Fractal repo as suggested by @breakthetargets * better wording, less typos
2022-06-06 14:49:39 +00:00
Update zxbeep.md
2023-07-09 12:21:12 +00:00
not really - very soon talented programmers found out ways to output much more than one square wave channel. a lot of ZX beeper routines do exist, but as of 0.6 Furnace supports two engines:
- a Follin/SFX-like engine with 6 channels of narrow pulse wave and click drums.
- QuadTone: PWM-driven engine with 4ch of pulse wave with freely variable duty cycles and 1-bit PCM drums.
docs update (#519) * docs update mentions of fractal, new chips documentation, and other minor stuff * add a link to the Fractal repo as suggested by @breakthetargets * better wording, less typos
2022-06-06 14:49:39 +00:00
# effects
Fixing something I botched. Hey, all those files I thought I clobbered!
2023-06-24 01:13:37 +00:00
- **`12xx`**: set pulse width.
- **`17xx`**: trigger overlay drum.
fix documentation regarding ZX beeper samples
2022-08-16 03:44:55 +00:00
- `xx` is the sample number.
- overlay drums are 1-bit and always play at 55930Hz (NTSC) or 55420Hz (PAL).
lots of doc updates
2022-10-16 05:53:05 +00:00
- the maximum length is 2048!
Documentation stuff! New page for the effect list, updates to chanOsc, and links to instrument types from every "system" page.
2023-08-04 16:11:53 +00:00
# info
Teensy formatting change. None of these should be list items. It was a bad idea.
2023-08-04 16:38:05 +00:00
this chip uses the [Beeper](../4-instrument/beeper.md), [Generic Sample](../4-instrument/amiga.md), and [Pokémon Mini/QuadTone](../4-instrument/quadtone.md) instrument editors.