Files
vt1200/reference/keyboard-mouse/vtbt/src/beeper.h
T
SDD 3fd1e13b2e docs: keyboard/mouse protocol spec — LK401 (LK201 protocol) + VSXXX-AA mouse, sources, MAME lk201 device
Distils public docs into reference/keyboard-mouse/PROTOCOL.md for the level-1
Keyboard (27) / Mouse (26) device tests:
- keyboard: 4800 8N1 RS-423, self-test via FD -> 01 00 00 00 (errors 3D/3E)
- mouse: 4800 8O1 RS-232, self-test via 'T' -> 4-byte report (errors 3D/3E, >=0x20 fatal)
- separate ports: DUART2 A=keyboard, B=mouse (NOT daisy-chained)
MAME already has an LK201 device (src/mame/dec/lk201.cpp/.h) but no DEC mouse.
2026-10-16 11:38:52 +03:00

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C

#ifndef BEEPER_H
#define BEEPER_H
/* Volumes are 0 (highest) to 7 (lowest) or -1 (disabled) */
int beeper_init(void);
void beeper_set_bell_volume(int volume);
void beeper_set_keyclick_volume(int volume);
void beeper_sound_bell(void);
void beeper_sound_keyclick(void);
#endif /* BEEPER_H */