--- mice.c.orig	Thu May 11 09:47:23 2000
+++ mice.c	Thu May 18 17:39:05 2000
@@ -1254,6 +1254,52 @@
     #undef DIF_TIME
 }
 
+/*
+ * This decoder is copied and adapted from the above gunze.
+ * 
+ * ricoh g1200-s uses a modified ps2 packet format.
+ * bits:
+ * 01234567,01234567,01234567
+ * 11p0yyxx,xxxxxxxx,yyyyyyyy
+ * p = pen
+ * x = x coordinate bit (absolute)
+ * y = y coordinate bit (absolute)
+ * 
+ * calibration information is stored in cmos and handled
+ * by the keyboard/ps2 driver.
+ */
+static int M_g1200s(Gpm_Event *state,  unsigned char *data)
+{
+    int x0, y0, x, y;
+
+    #define REAL_TO_XCELL(x) (x * win.ws_col / 0x3FFF)
+    #define REAL_TO_YCELL(y) (y * win.ws_row / 0x3FFF)
+     
+    state->buttons = data[0] & 0x20 ? GPM_B_LEFT: 0;
+
+    /* we alway need to look at the x,y values */
+    x0 = ((data[0] & 0x03) << 8) + data[1];
+    y0 = (((data[0] >> 2) & 0x03) << 8) + data[2];
+
+    /* range is 0-640 & 0-480, scale to REALPOS_MAX */
+    x = x0 * REALPOS_MAX / 640;
+    y = y0 * REALPOS_MAX / 480;
+
+    if (x<0) x = 0; if (x > REALPOS_MAX) x = REALPOS_MAX;
+    if (y<0) y = 0; if (y > REALPOS_MAX) y = REALPOS_MAX;
+
+    state->x = REAL_TO_XCELL(x);
+    state->y = REAL_TO_YCELL(y);
+    state->dx = 0;
+    state->dy = 0;  
+
+    realposx = x;
+    realposy = y;
+
+    #undef REAL_TO_XCELL
+    #undef REAL_TO_YCELL
+}
+
 /*  Genius Wizardpad tablet  --  Matt Kimball (mkimball@xmission.com)  */
 static int wizardpad_width = -1;
 static int wizardpad_height = -1;
@@ -2034,7 +2080,9 @@
   {"gunze",  "Gunze touch-screens (only button-1 events, by now)",
            "", M_gunze, I_gunze, STD_FLG,
                                 {0xF9, 0x50, 0xF0, 0x30}, 11, 1, 0, 1, NULL}, 
-
+  {"g1200s",  "Ricoh G1200-S stylus screen",
+           "g1200s", M_g1200s, I_empty, STD_FLG,
+                                {0xC0, 0xC0, 0x00, 0x00}, 3, 1, 0, 1, NULL}, 
   {"acecad",  "Acecad tablet absolute mode(Sumagrapics MM-Series mode)",
            "", M_summa, I_summa, STD_FLG,
                                 {0x80, 0x80, 0x00, 0x00}, 7, 1, 0, 1, 0},