84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
#include "ibm.h"
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#include "io.h"
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#include "keyboard.h"
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#include "lpt.h"
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#include "mouse.h"
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#include "amstrad.h"
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static uint8_t amstrad_dead;
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uint8_t amstrad_read(uint16_t port, void *priv)
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{
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pclog("amstrad_read : %04X\n",port);
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switch (port)
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{
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case 0x379:
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return 7 | readdacfifo();
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case 0x37a:
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if (romset == ROM_PC1512) return 0x20;
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if (romset == ROM_PC200) return 0x80;
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return 0;
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case 0xdead:
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return amstrad_dead;
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}
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return 0xff;
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}
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void amstrad_write(uint16_t port, uint8_t val, void *priv)
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{
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switch (port)
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{
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case 0xdead:
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amstrad_dead = val;
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break;
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}
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}
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static uint8_t mousex,mousey;
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void amstrad_mouse_write(uint16_t addr, uint8_t val, void *priv)
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{
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// pclog("Write mouse %04X %02X %04X:%04X\n", addr, val, CS, pc);
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if (addr==0x78) mousex=0;
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else mousey=0;
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}
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uint8_t amstrad_mouse_read(uint16_t addr, void *priv)
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{
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// printf("Read mouse %04X %04X:%04X %02X\n", addr, CS, pc, (addr == 0x78) ? mousex : mousey);
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if (addr==0x78) return mousex;
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return mousey;
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}
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static int oldb = 0;
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void amstrad_mouse_poll(int x, int y, int b)
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{
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mousex += x;
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mousey -= y;
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if ((b & 1) && !(oldb & 1))
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keyboard_send(0x7e);
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if ((b & 2) && !(oldb & 2))
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keyboard_send(0x7d);
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if (!(b & 1) && (oldb & 1))
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keyboard_send(0xfe);
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if (!(b & 2) && (oldb & 2))
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keyboard_send(0xfd);
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oldb = b;
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}
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void amstrad_init()
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{
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lpt2_remove_ams();
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io_sethandler(0x0078, 0x0001, amstrad_mouse_read, NULL, NULL, amstrad_mouse_write, NULL, NULL, NULL);
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io_sethandler(0x007a, 0x0001, amstrad_mouse_read, NULL, NULL, amstrad_mouse_write, NULL, NULL, NULL);
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io_sethandler(0x0379, 0x0002, amstrad_read, NULL, NULL, NULL, NULL, NULL, NULL);
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io_sethandler(0xdead, 0x0001, amstrad_read, NULL, NULL, amstrad_write, NULL, NULL, NULL);
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mouse_poll = amstrad_mouse_poll;
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}
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