92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
|
/*
|
||
|
|
* libtilemcore - Graphing calculator emulation library
|
||
|
|
*
|
||
|
|
* Copyright (C) 2009 Benjamin Moody
|
||
|
|
*
|
||
|
|
* This library is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public License
|
||
|
|
* as published by the Free Software Foundation; either version 2.1 of
|
||
|
|
* the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This library is distributed in the hope that it will be useful, but
|
||
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with this library; if not, see
|
||
|
|
* <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
# include <config.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include "tilem.h"
|
||
|
|
#include "scancodes.h"
|
||
|
|
|
||
|
|
void tilem_keypad_reset(TilemCalc* calc)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
calc->keypad.group = 0xff;
|
||
|
|
calc->keypad.onkeydown = 0;
|
||
|
|
calc->keypad.onkeyint = 0;
|
||
|
|
for (i = 0; i < 8; i++)
|
||
|
|
calc->keypad.keysdown[i] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void tilem_keypad_set_group(TilemCalc* calc, byte group)
|
||
|
|
{
|
||
|
|
calc->keypad.group = group;
|
||
|
|
}
|
||
|
|
|
||
|
|
byte tilem_keypad_read_keys(TilemCalc* calc)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
byte keys, old;
|
||
|
|
|
||
|
|
keys = 0;
|
||
|
|
for (i = 0; i < 8; i++) {
|
||
|
|
if (!(calc->keypad.group & (1 << i)))
|
||
|
|
keys |= calc->keypad.keysdown[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
do {
|
||
|
|
old = keys;
|
||
|
|
for (i = 0; i < 8; i++) {
|
||
|
|
if (keys & calc->keypad.keysdown[i])
|
||
|
|
keys |= calc->keypad.keysdown[i];
|
||
|
|
}
|
||
|
|
} while (keys != old);
|
||
|
|
|
||
|
|
return ~keys;
|
||
|
|
}
|
||
|
|
|
||
|
|
void tilem_keypad_press_key(TilemCalc* calc, int scancode)
|
||
|
|
{
|
||
|
|
if (scancode == TILEM_KEY_ON) {
|
||
|
|
if (!calc->keypad.onkeydown && calc->keypad.onkeyint)
|
||
|
|
calc->z80.interrupts |= TILEM_INTERRUPT_ON_KEY;
|
||
|
|
calc->keypad.onkeydown = 1;
|
||
|
|
}
|
||
|
|
else if (scancode > 0 && scancode < 65) {
|
||
|
|
scancode--;
|
||
|
|
calc->keypad.keysdown[scancode / 8] |= (1 << (scancode % 8));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void tilem_keypad_release_key(TilemCalc* calc, int scancode)
|
||
|
|
{
|
||
|
|
if (scancode == TILEM_KEY_ON) {
|
||
|
|
if (calc->keypad.onkeydown && calc->keypad.onkeyint)
|
||
|
|
calc->z80.interrupts |= TILEM_INTERRUPT_ON_KEY;
|
||
|
|
calc->keypad.onkeydown = 0;
|
||
|
|
}
|
||
|
|
else if (scancode > 0 && scancode < 65) {
|
||
|
|
scancode--;
|
||
|
|
calc->keypad.keysdown[scancode / 8] &= ~(1 << (scancode % 8));
|
||
|
|
}
|
||
|
|
}
|