1.1 diff -r 674226015c8a -r 9581358e92b0 src/keyboard.h 1.2 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.3 +++ b/src/keyboard.h Wed Feb 09 15:03:31 2011 +0000 1.4 @@ -0,0 +1,56 @@ 1.5 +#ifndef _KEYBOARD_H 1.6 +#define _KEYBOARD_H 1.7 + 1.8 +#include "SDL.h" 1.9 + 1.10 +/// Keyboard buffer size in bytes 1.11 +#define KEYBOARD_BUFFER_SIZE 256 1.12 + 1.13 +typedef struct { 1.14 + /// Key states 1.15 + int keystate[0x80]; 1.16 + 1.17 + /// Keyboard buffer 1.18 + char buffer[KEYBOARD_BUFFER_SIZE]; 1.19 + 1.20 + /// Read pointer 1.21 + size_t readp; 1.22 + 1.23 + /// Write pointer 1.24 + size_t writep; 1.25 + 1.26 + /// Number of bytes in keyboard buffer 1.27 + size_t buflen; 1.28 + 1.29 + /// Transmit Interrupt Enable 1.30 + bool txie; 1.31 + /// Receive Interrupt Enable 1.32 + bool rxie; 1.33 +} KEYBOARD_STATE; 1.34 + 1.35 +/** 1.36 + * Initialise a keyboard state block. 1.37 + * 1.38 + * Call this once when the keyboard is added to the emulation. 1.39 + */ 1.40 +void keyboard_init(KEYBOARD_STATE *ks); 1.41 + 1.42 +/** 1.43 + * SDL_Event delegation routine. 1.44 + * 1.45 + * Call this when an SDL keyup or keydown event is received. 1.46 + */ 1.47 +void keyboard_event(KEYBOARD_STATE *ks, SDL_Event *ev); 1.48 + 1.49 +/** 1.50 + * Keyboard scan routine. 1.51 + * 1.52 + * Call this periodically to scan the keyboard. 60 times/sec should be fine. 1.53 + */ 1.54 +void keyboard_scan(KEYBOARD_STATE *ks); 1.55 + 1.56 +bool keyboard_get_irq(KEYBOARD_STATE *ks); 1.57 +uint8_t keyboard_read(KEYBOARD_STATE *ks, uint8_t addr); 1.58 +void keyboard_write(KEYBOARD_STATE *ks, uint8_t addr, uint8_t val); 1.59 + 1.60 +#endif