(nw)

src/mouse_amstrad.c

@@ -0,0 +1,63 @@
+/* Copyright holders: SA1988, Curt Coder
+   see COPYING for more details
+*/
+#include "ibm.h"
+#include "io.h"
+#include "mouse.h"
+#include "mouse_amstrad.h"
+
+static int amstrad_x = 0, amstrad_y = 0, amstrad_b = 0;
+
+uint8_t mouse_amstrad_read(uint16_t port, void *priv)
+{
+	switch (port)
+	{
+		case 0x78:
+		return amstrad_x;
+		
+		case 0x7a:
+		return amstrad_y;
+	}
+	return 0xff;
+}
+
+void mouse_amstrad_write(uint16_t port, uint8_t val, void *priv)
+{
+	switch (port)
+	{
+		case 0x78:
+		amstrad_x = 0;
+		break;
+		
+		case 0x7a:
+		amstrad_y = 0;
+		break;
+	}
+}
+
+void mouse_amstrad_poll(int x, int y, int b)
+{
+        if (!x && !y && b==amstrad_b) return;
+
+        amstrad_b=b;
+		if (x > amstrad_x)
+			amstrad_x+=3;
+		else
+			amstrad_x-=3;
+		
+		amstrad_x = x;
+		
+		if (y > amstrad_y)
+			amstrad_y+=3;
+		else
+			amstrad_y-=3;		
+		
+        amstrad_y = y;
+}
+
+void mouse_amstrad_init()
+{
+        mouse_poll = mouse_amstrad_poll;
+		io_sethandler(0x0078, 0x0001, mouse_amstrad_read, NULL, NULL, mouse_amstrad_write, NULL, NULL, NULL);
+		io_sethandler(0x007a, 0x0001, mouse_amstrad_read, NULL, NULL, mouse_amstrad_write, NULL, NULL, NULL);
+}

src/mouse_amstrad.h

@@ -0,0 +1,4 @@
+/* Copyright holders: SA1988
+   see COPYING for more details
+*/
+void mouse_amstrad_init();