CMOS digital logic emulation objects

svn path=/trunk/externals/mrpeach/; revision=7509

1 files changed, 256 insertions, 0 deletions

diff --git a/cmos/cd4516.c b/cmos/cd4516.c
new file mode 100755
index 0000000..2949dcf
--- /dev/null
+++ b/cmos/cd4516.c
@@ -0,0 +1,256 @@
+/* cd4516.c MP 20070312 */
+/* Emulate a cd4516b */
+#include "m_pd.h"
+
+typedef struct _cd4516
+{
+    t_object        x_obj;
+    t_outlet        *x_Q1Out;
+    t_outlet        *x_Q2Out;
+    t_outlet        *x_Q3Out;
+    t_outlet        *x_Q4Out;
+    t_outlet        *x_CarryOut;
+    t_int           x_clock;
+    t_int           x_upDown;
+    t_int           x_preset_enable;
+    t_int           x_carry;
+    t_int           x_P1;
+    t_int           x_P2;
+    t_int           x_P3;
+    t_int           x_P4;
+    t_int           x_reset;
+    t_int           x_count;
+    t_inlet         *x_UpDownIn;/* All inlets take one or zero as acceptable inputs. */
+    t_inlet         *x_ResetIn;
+    t_inlet         *x_PresetEnableIn;
+    t_inlet         *x_CarryIn;
+    t_inlet         *x_P1In;
+    t_inlet         *x_P2In;
+    t_inlet         *x_P3In;
+    t_inlet         *x_P4In;
+    /* The main inlet (clock) should accept a bang or a one as valid clocks. */
+    /* If a one is received, it must be followed by a zero before the clock will work again. */
+} t_cd4516;
+
+static t_class *cd4516_class;
+
+void cd4516_setup(void);
+static void *cd4516_new(t_symbol *s, int argc, t_atom *argv);
+static void cd4516_free(t_cd4516 *x);
+static void cd4516_bang(t_cd4516 *x);
+static void cd4516_float(t_cd4516 *x, t_float f);
+static void cd4516_reset(t_cd4516 *x, t_float f);
+static void cd4516_preset_enable(t_cd4516 *x, t_float f);
+static void cd4516_up_down(t_cd4516 *x, t_float f);
+static void cd4516_carry(t_cd4516 *x, t_float f);
+static void cd4516_P1(t_cd4516 *x, t_float f);
+static void cd4516_P2(t_cd4516 *x, t_float f);
+static void cd4516_P3(t_cd4516 *x, t_float f);
+static void cd4516_P4(t_cd4516 *x, t_float f);
+static void cd4516_update_outlets(t_cd4516 *x);
+
+static void cd4516_float(t_cd4516 *x, t_float f)
+{
+    if (f == 1)
+    { /* if clock is high and was low, count up. */
+        if ((x->x_clock == 0)&&(x->x_reset == 0)&&(x->x_preset_enable == 0)&&(x->x_carry == 0))
+        {
+            x->x_clock = 1;
+            if (x->x_upDown == 1) x->x_count = (x->x_count + 1)%16;
+            else x->x_count = (x->x_count - 1)%16;
+            cd4516_update_outlets(x);
+        }
+    }
+    else if (f == 0)
+    {
+        x->x_clock = 0;
+    }
+    else post("cd4516 accepts bang, 1 or 0.");
+}
+
+static void cd4516_bang(t_cd4516 *x)
+{
+    if ((x->x_reset == 0)&&(x->x_preset_enable == 0)&&(x->x_carry == 0))
+    {
+        if (x->x_upDown == 1)x->x_count = (x->x_count + 1)%16;
+        else x->x_count = (x->x_count - 1)%16;
+        cd4516_update_outlets(x);
+    }
+}
+
+static void cd4516_reset(t_cd4516 *x, t_float f)
+{
+    if (f == 1)
+    {
+        if (x->x_reset == 0)
+        {
+            x->x_count = 0;
+            cd4516_update_outlets(x);
+            x->x_reset = 1;
+        }
+    }
+    else if (f == 0)
+    {
+        x->x_reset = 0;
+        if (x->x_preset_enable == 1)
+        { /* the strange case of a low-going reset enabling an already high preset enable */
+            x->x_count = x->x_P1 + 2*x->x_P2 + 4*x->x_P3 + 8*x->x_P4;
+            cd4516_update_outlets(x);
+        }
+    }
+    else
+    {
+        post("cd4516 reset takes 1 or 0 only.");
+        return;
+    }
+}
+
+static void cd4516_preset_enable(t_cd4516 *x, t_float f)
+{
+    if (f == 0)
+    {
+        x->x_preset_enable = 0;
+    }
+    else if (f == 1)
+    {
+        if (x->x_preset_enable == 0)
+        {
+            x->x_preset_enable = 1;
+            if (x->x_reset == 0)
+            {
+                x->x_count = x->x_P1 + 2*x->x_P2 + 4*x->x_P3 + 8*x->x_P4;
+                cd4516_update_outlets(x);
+            }
+        }
+    }
+    else
+    {
+        post("cd4516 x_preset_enable takes 1 or 0 only.");
+        return;
+    }
+}
+
+static void cd4516_up_down(t_cd4516 *x, t_float f)
+{
+    if (f == 1)
+    {
+        x->x_upDown = 1;
+    }
+    else if (f == 0)
+    {
+        x->x_upDown = 0;
+    }
+    else post("cd4516 updown accepts bang, 1 or 0.");
+}
+
+static void cd4516_carry(t_cd4516 *x, t_float f)
+{
+    if (f == 1)
+    {
+        x->x_carry = 1;
+    }
+    else if (f == 0)
+    {
+        x->x_carry = 0;
+    }
+    else post("cd4516 carry accepts bang, 1 or 0.");
+}
+
+static void cd4516_P1(t_cd4516 *x, t_float f)
+{
+    if (f == 1) x->x_P1 = 1;
+    else if (f == 0) x->x_P1 = 0;
+    else
+    {
+        post("cd4516 P1 takes 1 or 0 only.");
+        return;
+    }
+}
+static void cd4516_P2(t_cd4516 *x, t_float f)
+{
+    if (f == 1) x->x_P2 = 1;
+    else if (f == 0) x->x_P2 = 0;
+    else
+    {
+        post("cd4516 P2 takes 1 or 0 only.");
+        return;
+    }
+}
+static void cd4516_P3(t_cd4516 *x, t_float f)
+{
+    if (f == 1) x->x_P3 = 1;
+    else if (f == 0) x->x_P3 = 0;
+    else
+    {
+        post("cd4516 P3 takes 1 or 0 only.");
+        return;
+    }
+}
+static void cd4516_P4(t_cd4516 *x, t_float f)
+{
+    if (f == 1) x->x_P4 = 1;
+    else if (f == 0) x->x_P4 = 0;
+    else
+    {
+        post("cd4516 P4 takes 1 or 0 only.");
+        return;
+    }
+}
+
+static void cd4516_update_outlets(t_cd4516 *x)
+{
+    if (x->x_upDown == 1) outlet_float(x->x_CarryOut, (x->x_count == 15)?0:1);
+    else outlet_float(x->x_CarryOut, (x->x_count == 0)?0:1);
+    outlet_float(x->x_Q4Out, ((x->x_count & 8) != 0)?1:0);
+    outlet_float(x->x_Q3Out, ((x->x_count & 4) != 0)?1:0);
+    outlet_float(x->x_Q2Out, ((x->x_count & 2) != 0)?1:0);
+    outlet_float(x->x_Q1Out, ((x->x_count & 1) != 0)?1:0);
+}
+
+static void cd4516_free(t_cd4516 *x)
+{
+    return;
+}
+
+static void *cd4516_new(t_symbol *s, int argc, t_atom *argv)
+{
+    t_cd4516           *x;
+
+    x = (t_cd4516 *)pd_new(cd4516_class);
+    if (x == NULL) return (x);
+    x->x_Q1Out = outlet_new((t_object *)x, &s_float);
+    x->x_Q2Out = outlet_new((t_object *)x, &s_float);
+    x->x_Q3Out = outlet_new((t_object *)x, &s_float);
+    x->x_Q4Out = outlet_new((t_object *)x, &s_float);
+    x->x_CarryOut = outlet_new((t_object *)x, &s_float);
+
+    x->x_UpDownIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("updown"));
+    x->x_ResetIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("reset"));
+    x->x_PresetEnableIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("presetenable"));
+    x->x_CarryIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("carry"));
+    x->x_P1In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P1"));
+    x->x_P2In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P2"));
+    x->x_P3In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P3"));
+    x->x_P4In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P4"));
+    return (x);
+}
+
+void cd4516_setup(void)
+{
+    cd4516_class = class_new(gensym("cd4516"),
+                    (t_newmethod)cd4516_new,
+                    (t_method)cd4516_free,
+                    sizeof(t_cd4516), 0, 0); /* no arguments */
+    class_addbang(cd4516_class, cd4516_bang);
+    class_addfloat(cd4516_class, cd4516_float);
+    class_addmethod(cd4516_class, (t_method)cd4516_up_down, gensym("updown"), A_FLOAT, 0);
+    class_addmethod(cd4516_class, (t_method)cd4516_preset_enable, gensym("presetenable"), A_FLOAT, 0);
+    class_addmethod(cd4516_class, (t_method)cd4516_reset, gensym("reset"), A_FLOAT, 0);
+    class_addmethod(cd4516_class, (t_method)cd4516_carry, gensym("carry"), A_FLOAT, 0);
+    class_addmethod(cd4516_class, (t_method)cd4516_P1, gensym("P1"), A_FLOAT, 0);
+    class_addmethod(cd4516_class, (t_method)cd4516_P2, gensym("P2"), A_FLOAT, 0);
+    class_addmethod(cd4516_class, (t_method)cd4516_P3, gensym("P3"), A_FLOAT, 0);
+    class_addmethod(cd4516_class, (t_method)cd4516_P4, gensym("P4"), A_FLOAT, 0);
+}
+/* end cd4516.c */
+