283 lines
8.8 KiB
C++
283 lines
8.8 KiB
C++
#include "zx_ula.h"
|
|
#include <SDL2/SDL.h>
|
|
|
|
namespace zx_ula
|
|
{
|
|
#define KEY_SHIFT 0
|
|
#define KEY_Z 1
|
|
#define KEY_X 2
|
|
#define KEY_C 3
|
|
#define KEY_V 4
|
|
|
|
#define KEY_A 5
|
|
#define KEY_S 6
|
|
#define KEY_D 7
|
|
#define KEY_F 8
|
|
#define KEY_G 9
|
|
|
|
#define KEY_Q 10
|
|
#define KEY_W 11
|
|
#define KEY_E 12
|
|
#define KEY_R 13
|
|
#define KEY_T 14
|
|
|
|
#define KEY_1 15
|
|
#define KEY_2 16
|
|
#define KEY_3 17
|
|
#define KEY_4 18
|
|
#define KEY_5 19
|
|
|
|
#define KEY_0 20
|
|
#define KEY_9 21
|
|
#define KEY_8 22
|
|
#define KEY_7 23
|
|
#define KEY_6 24
|
|
|
|
#define KEY_P 25
|
|
#define KEY_O 26
|
|
#define KEY_I 27
|
|
#define KEY_U 28
|
|
#define KEY_Y 29
|
|
|
|
#define KEY_RETURN 30
|
|
#define KEY_L 31
|
|
#define KEY_K 32
|
|
#define KEY_J 33
|
|
#define KEY_H 34
|
|
|
|
#define KEY_SPACE 35
|
|
#define KEY_SYMBOL 36
|
|
#define KEY_M 37
|
|
#define KEY_N 38
|
|
#define KEY_B 39
|
|
|
|
uint8_t zx_keyboard[40];
|
|
|
|
static uint8_t border_color = 0;
|
|
static uint8_t ear = 0;
|
|
static uint8_t mic = 0;
|
|
|
|
static uint16_t last_1 = 0;
|
|
|
|
void update_zx_keyboard()
|
|
{
|
|
const uint8_t *keys = SDL_GetKeyboardState(NULL);
|
|
|
|
// Normal keypresses
|
|
zx_keyboard[KEY_SHIFT] = keys[SDL_SCANCODE_LSHIFT] | keys[SDL_SCANCODE_RSHIFT];
|
|
zx_keyboard[KEY_Z] = keys[SDL_SCANCODE_Z];
|
|
zx_keyboard[KEY_X] = keys[SDL_SCANCODE_X];
|
|
zx_keyboard[KEY_C] = keys[SDL_SCANCODE_C];
|
|
zx_keyboard[KEY_V] = keys[SDL_SCANCODE_V];
|
|
|
|
zx_keyboard[KEY_A] = keys[SDL_SCANCODE_A];
|
|
zx_keyboard[KEY_S] = keys[SDL_SCANCODE_S];
|
|
zx_keyboard[KEY_D] = keys[SDL_SCANCODE_D];
|
|
zx_keyboard[KEY_F] = keys[SDL_SCANCODE_F];
|
|
zx_keyboard[KEY_G] = keys[SDL_SCANCODE_G];
|
|
|
|
zx_keyboard[KEY_Q] = keys[SDL_SCANCODE_Q];
|
|
zx_keyboard[KEY_W] = keys[SDL_SCANCODE_W];
|
|
zx_keyboard[KEY_E] = keys[SDL_SCANCODE_E];
|
|
zx_keyboard[KEY_R] = keys[SDL_SCANCODE_R];
|
|
zx_keyboard[KEY_T] = keys[SDL_SCANCODE_T];
|
|
|
|
zx_keyboard[KEY_1] = keys[SDL_SCANCODE_1] | keys[SDL_SCANCODE_KP_1];
|
|
zx_keyboard[KEY_2] = keys[SDL_SCANCODE_2] | keys[SDL_SCANCODE_KP_2];
|
|
zx_keyboard[KEY_3] = keys[SDL_SCANCODE_3] | keys[SDL_SCANCODE_KP_3];
|
|
zx_keyboard[KEY_4] = keys[SDL_SCANCODE_4] | keys[SDL_SCANCODE_KP_4];
|
|
zx_keyboard[KEY_5] = keys[SDL_SCANCODE_5] | keys[SDL_SCANCODE_KP_5];
|
|
|
|
zx_keyboard[KEY_0] = keys[SDL_SCANCODE_0] | keys[SDL_SCANCODE_KP_0];
|
|
zx_keyboard[KEY_9] = keys[SDL_SCANCODE_9] | keys[SDL_SCANCODE_KP_9];
|
|
zx_keyboard[KEY_8] = keys[SDL_SCANCODE_8] | keys[SDL_SCANCODE_KP_8];
|
|
zx_keyboard[KEY_7] = keys[SDL_SCANCODE_7] | keys[SDL_SCANCODE_KP_7];
|
|
zx_keyboard[KEY_6] = keys[SDL_SCANCODE_6] | keys[SDL_SCANCODE_KP_6];
|
|
|
|
zx_keyboard[KEY_P] = keys[SDL_SCANCODE_P];
|
|
zx_keyboard[KEY_O] = keys[SDL_SCANCODE_O];
|
|
zx_keyboard[KEY_I] = keys[SDL_SCANCODE_I];
|
|
zx_keyboard[KEY_U] = keys[SDL_SCANCODE_U];
|
|
zx_keyboard[KEY_Y] = keys[SDL_SCANCODE_Y];
|
|
|
|
zx_keyboard[KEY_RETURN] = keys[SDL_SCANCODE_KP_ENTER] | keys[SDL_SCANCODE_RETURN];
|
|
zx_keyboard[KEY_L] = keys[SDL_SCANCODE_L];
|
|
zx_keyboard[KEY_K] = keys[SDL_SCANCODE_K];
|
|
zx_keyboard[KEY_J] = keys[SDL_SCANCODE_J];
|
|
zx_keyboard[KEY_H] = keys[SDL_SCANCODE_H];
|
|
|
|
zx_keyboard[KEY_SPACE] = keys[SDL_SCANCODE_SPACE];
|
|
zx_keyboard[KEY_SYMBOL] = keys[SDL_SCANCODE_LCTRL] | keys[SDL_SCANCODE_RCTRL];
|
|
zx_keyboard[KEY_M] = keys[SDL_SCANCODE_M];
|
|
zx_keyboard[KEY_N] = keys[SDL_SCANCODE_N];
|
|
zx_keyboard[KEY_B] = keys[SDL_SCANCODE_B];
|
|
|
|
// Keys in a normal keyboard that ara combinations in the zx one
|
|
if (keys[SDL_SCANCODE_BACKSPACE]) zx_keyboard[KEY_SHIFT] = zx_keyboard[KEY_0] = 1;
|
|
if (keys[SDL_SCANCODE_PERIOD]) zx_keyboard[KEY_SYMBOL] = zx_keyboard[KEY_M] = 1;
|
|
}
|
|
|
|
int port_in(int port)
|
|
{
|
|
const uint8_t h_addr = (port>>8);
|
|
uint8_t result = ear ? 0xbf : 0xff;
|
|
|
|
update_zx_keyboard();
|
|
|
|
if (!(h_addr & ~0xfe))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_SHIFT]*0x01 +
|
|
zx_keyboard[KEY_Z]*0x02 +
|
|
zx_keyboard[KEY_X]*0x04 +
|
|
zx_keyboard[KEY_C]*0x08 +
|
|
zx_keyboard[KEY_V]*0x10 );
|
|
}
|
|
if (!(h_addr & ~0xfd))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_A]*0x01 +
|
|
zx_keyboard[KEY_S]*0x02 +
|
|
zx_keyboard[KEY_D]*0x04 +
|
|
zx_keyboard[KEY_F]*0x08 +
|
|
zx_keyboard[KEY_G]*0x10 );
|
|
}
|
|
if (!(h_addr & ~0xfb))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_Q]*0x01 +
|
|
zx_keyboard[KEY_W]*0x02 +
|
|
zx_keyboard[KEY_E]*0x04 +
|
|
zx_keyboard[KEY_R]*0x08 +
|
|
zx_keyboard[KEY_T]*0x10 );
|
|
}
|
|
if (!(h_addr & ~0xf7))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_1]*0x01 +
|
|
zx_keyboard[KEY_2]*0x02 +
|
|
zx_keyboard[KEY_3]*0x04 +
|
|
zx_keyboard[KEY_4]*0x08 +
|
|
zx_keyboard[KEY_5]*0x10 );
|
|
}
|
|
if (!(h_addr & ~0xef))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_0]*0x01 +
|
|
zx_keyboard[KEY_9]*0x02 +
|
|
zx_keyboard[KEY_8]*0x04 +
|
|
zx_keyboard[KEY_7]*0x08 +
|
|
zx_keyboard[KEY_6]*0x10 );
|
|
}
|
|
if (!(h_addr & ~0xdf))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_P]*0x01 +
|
|
zx_keyboard[KEY_O]*0x02 +
|
|
zx_keyboard[KEY_I]*0x04 +
|
|
zx_keyboard[KEY_U]*0x08 +
|
|
zx_keyboard[KEY_Y]*0x10 );
|
|
}
|
|
if (!(h_addr & ~0xbf))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_RETURN]*0x01 +
|
|
zx_keyboard[KEY_L]*0x02 +
|
|
zx_keyboard[KEY_K]*0x04 +
|
|
zx_keyboard[KEY_J]*0x08 +
|
|
zx_keyboard[KEY_H]*0x10 );
|
|
}
|
|
if (!(h_addr & ~0x7f))
|
|
{
|
|
result &= ~(
|
|
zx_keyboard[KEY_SPACE]*0x01 +
|
|
zx_keyboard[KEY_SYMBOL]*0x02 +
|
|
zx_keyboard[KEY_M]*0x04 +
|
|
zx_keyboard[KEY_N]*0x08 +
|
|
zx_keyboard[KEY_B]*0x10 );
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void port_out(int port, int val)
|
|
{
|
|
border_color = val & 0x7;
|
|
mic = (val&0x08)==0;
|
|
ear = val&0x10;
|
|
//printf("EAR:%i MIC:%i\n", ear, mic);
|
|
}
|
|
|
|
uint8_t get_border_color() { return border_color; }
|
|
uint8_t get_ear() { return ear; }
|
|
void set_ear(const uint8_t val) { ear = val; }
|
|
|
|
|
|
|
|
|
|
SDL_AudioDeviceID sdlAudioDevice;
|
|
uint8_t sound_buffer[1024];
|
|
uint16_t sound_pos;
|
|
uint16_t t_sound=0;
|
|
|
|
void audioCallback(void * userdata, uint8_t * stream, int len)
|
|
{
|
|
const uint16_t top = sound_pos < len ? sound_pos : len;
|
|
printf("top: %i, len: %i, pos: %i\n", top, len, sound_pos);
|
|
memcpy(stream, sound_buffer, top);
|
|
if (top<len) memchr(&stream[top], sound_buffer[top-1], len-top);
|
|
if (top<sound_pos)
|
|
{
|
|
if (last_1>top)
|
|
{
|
|
memcpy(sound_buffer, &sound_buffer[top], sound_pos-top);
|
|
sound_pos=sound_pos-top;
|
|
last_1=last_1-top;
|
|
}
|
|
else
|
|
{
|
|
sound_pos=last_1=0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sound_pos=last_1=0;
|
|
}
|
|
}
|
|
|
|
void sound_init()
|
|
{
|
|
SDL_AudioSpec audioSpec{11025, AUDIO_U8, 1, 0, 220, 0, 0, &audioCallback, NULL};
|
|
sdlAudioDevice = SDL_OpenAudioDevice(NULL, 0, &audioSpec, NULL, 0);
|
|
sound_enable();
|
|
}
|
|
|
|
void sound_enable()
|
|
{
|
|
SDL_PauseAudioDevice(sdlAudioDevice, 0);
|
|
}
|
|
|
|
void sound_disable()
|
|
{
|
|
SDL_PauseAudioDevice(sdlAudioDevice, 1);
|
|
}
|
|
|
|
void sound_update(const uint8_t dt)
|
|
{
|
|
t_sound += dt;
|
|
if (t_sound>=318) {
|
|
t_sound-=318;
|
|
//sound_pos = (sound_pos+1) & 0x3ff;
|
|
//sound_buffer[sound_pos] = ear*128;
|
|
|
|
if (sound_pos<1024)
|
|
{
|
|
sound_buffer[sound_pos++] = ear*128;
|
|
if (ear) last_1 = sound_pos;
|
|
}
|
|
/*else
|
|
{
|
|
printf("WARNING! Sound buffer overflow!\n");
|
|
}*/
|
|
}
|
|
}
|
|
} |