LCOM1920-T7G03.old1

#include <lcom/lcf.h>

#include <lcom/lab3.h>

#include <stdbool.h>

#include <stdint.h>

/**

* @brief Handles keyboard interrupts (C implementation)

*

* Reads the status register and the output buffer (OB).

* If there was some error, the byte read from the OB should be discarded.

*

* All communication with other code must be done via global variables, static if possible.

*

* Must be defined using parenthesis around the function name:

*/

void (kbc_ih)(void);

/**

 * @brief Invokes sys_inb() system call but reads the value into a uint8_t variable.

 *

 * @param port the input port that is to be read

 * @param value address of 8-bit variable to be update with the value read

 * @return Return 0 upon success and non-zero otherwise

 */

int (util_sys_inb)(int port, uint8_t *value);

/**

 * @brief Subscribes and enables Keyboard interrupts

 *

 * @param bit_no address of memory to be initialized with the

 *         bit number to be set in the mask returned upon an interrupt

 * @return Return 0 upon success and non-zero otherwise

 */

int(kbc_subscribe_int)(uint8_t *bit_no);

/**

 * @brief Unsubscribes Keyboard interrupts

 *

 * @return Return 0 upon success and non-zero otherwise

 */

int(kbc_unsubscribe_int)();