Add Mouse Systems mouse emulation.

src/mouse_msystems.c

@@ -0,0 +1,90 @@
+#include <stdlib.h>
+#include "ibm.h"
+#include "mouse.h"
+#include "pic.h"
+#include "serial.h"
+#include "timer.h"
+
+typedef struct mouse_msystems_t
+{
+        int mousepos, mousedelay;
+        int oldb;
+        SERIAL *serial;
+} mouse_msystems_t;
+
+static void mouse_msystems_poll(int x, int y, int z, int b, void *p)
+{
+        mouse_msystems_t *mouse = (mouse_msystems_t *)p;
+        SERIAL *serial = mouse->serial;        
+        uint8_t mousedat[4];
+
+        if (!(serial->ier & 1))
+                return;
+        if (!x && !y && b == mouse->oldb)
+                return;
+
+        mouse->oldb = b;
+        y = -y;
+        if (x > 127)
+                x = 127;
+        if (y > 127)
+                y = 127;
+        if (x < -128)
+                x = -128;
+        if (y < -128)
+                y = -128;
+
+        /*Use Mouse Systems format*/
+        mousedat[0] = 0x87;
+        if (b & 1)
+                mousedat[0] &= ~0x04;
+        if (b & 2)
+                mousedat[0] &= ~0x01;
+        if (b & 4)
+                mousedat[0] &= ~0x02;
+
+        mousedat[1] = x;
+        mousedat[2] = y;
+        mousedat[3] = 0;
+        mousedat[4] = 0;
+        
+        if (!(serial->mctrl & 0x10))
+        {
+//                pclog("Serial data %02X %02X %02X\n", mousedat[0], mousedat[1], mousedat[2]);
+                serial_write_fifo(mouse->serial, mousedat[0]);
+                serial_write_fifo(mouse->serial, mousedat[1]);
+                serial_write_fifo(mouse->serial, mousedat[2]);
+                serial_write_fifo(mouse->serial, mousedat[3]);
+                serial_write_fifo(mouse->serial, mousedat[4]);
+        }
+}
+
+static void *mouse_msystems_init()
+{
+        mouse_msystems_t *mouse = (mouse_msystems_t *)malloc(sizeof(mouse_msystems_t));
+        memset(mouse, 0, sizeof(mouse_msystems_t));
+
+        mouse->serial = &serial1;
+        serial1.rcr_callback = NULL;
+        serial1.rcr_callback_p = NULL;
+        
+        return mouse;
+}
+
+static void mouse_msystems_close(void *p)
+{
+        mouse_msystems_t *mouse = (mouse_msystems_t *)p;
+        
+        free(mouse);
+        
+        serial1.rcr_callback = NULL;
+}
+
+mouse_t mouse_serial_msystems =
+{
+        "Mouse Systems 3-button mouse (serial)",
+        mouse_msystems_init,
+        mouse_msystems_close,
+        mouse_msystems_poll,
+        MOUSE_TYPE_SERIAL | MOUSE_TYPE_3BUTTON
+};