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-rwxr-xr-xcmos/cd4027.c210
1 files changed, 210 insertions, 0 deletions
diff --git a/cmos/cd4027.c b/cmos/cd4027.c
new file mode 100755
index 0000000..69aaf48
--- /dev/null
+++ b/cmos/cd4027.c
@@ -0,0 +1,210 @@
+/* cd4027.c MP 20070306 */
+/* Emulate a cd4027b */
+#include "m_pd.h"
+
+typedef struct _cd4027
+{
+ t_object x_obj;
+ t_int x_state;/* set = bit0, clock = bit1, reset = bit2 j = bit3 k = bit4 q = bit 5 */
+ t_outlet *x_Q;
+ t_outlet *x_notQ;
+ t_inlet *x_set;/* set takes one or zero as acceptable inputs. */
+ t_inlet *x_reset;/* reset takes one or zero as acceptable inputs. */
+ t_inlet *x_j;/* j takes one or zero as acceptable inputs. */
+ t_inlet *x_k;/* k takes one or zero as acceptable inputs. */
+ /* 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_cd4027;
+#define SET_4027 1
+#define CLOCK_4027 2
+#define RESET_4027 4
+#define J_4027 8
+#define K_4027 16
+#define Q_4027 32
+#define UPDATING_4027 64
+#define CHANGED_4027 128
+
+static t_class *cd4027_class;
+
+void cd4027_setup(void);
+static void *cd4027_new(t_symbol *s, int argc, t_atom *argv);
+static void cd4027_free(t_cd4027 *x);
+static void cd4027_bang(t_cd4027 *x);
+static void cd4027_float(t_cd4027 *x, t_float f);
+static void cd4027_set(t_cd4027 *x, t_float f);
+static void cd4027_reset(t_cd4027 *x, t_float f);
+static void cd4027_j(t_cd4027 *x, t_float f);
+static void cd4027_k(t_cd4027 *x, t_float f);
+static void cd4027_update_outlets(t_cd4027 *x);
+static void cd4027_printstate (t_cd4027 *x);
+
+static void cd4027_float(t_cd4027 *x, t_float f)
+{
+ if (f == 1)
+ { /* if clock is high and was low, clock it. */
+ if ((x->x_state & CLOCK_4027) == 0) cd4027_bang(x);
+ x->x_state |= CLOCK_4027;
+ }
+ else if (f == 0) x->x_state &= ~CLOCK_4027;
+ else post("cd4027 accepts bang, 1 or 0.");
+}
+
+static void cd4027_printstate (t_cd4027 *x)
+{
+ post ("SET %d RESET %d J %d K %d Q %d", ((x->x_state & SET_4027) != 0)?1:0
+ , ((x->x_state & RESET_4027) != 0)?1:0
+ , ((x->x_state & J_4027) != 0)?1:0
+ , ((x->x_state & K_4027) != 0)?1:0
+ , ((x->x_state & Q_4027) != 0)?1:0);
+}
+
+static void cd4027_bang(t_cd4027 *x)
+{
+ if ((x->x_state & (SET_4027 | RESET_4027)) == 0)
+ { /* if set is low and reset is low, clock forward */
+ if ((x->x_state & Q_4027) != 0)
+ { /* Q is high */
+ if ((x->x_state & K_4027)== 0) x->x_state |= Q_4027;
+ else x->x_state &= ~Q_4027;
+ }
+ else
+ { /* Q is low */
+ if ((x->x_state & J_4027) != 0) x->x_state |= Q_4027;
+ else x->x_state &= ~Q_4027;
+ }
+ cd4027_update_outlets(x);
+ }
+}
+
+static void cd4027_set(t_cd4027 *x, t_float f)
+{
+ if (f == 1)
+ {
+ x->x_state |= SET_4027; /* set = 1 */
+ }
+ else if (f == 0)
+ {
+ x->x_state &= ~SET_4027; /* set = 0 */
+ }
+ else
+ {
+ post("cd4027 set takes 1 or 0 only.");
+ return;
+ }
+ /* update outlets if not already doing that */
+ if ((x->x_state & UPDATING_4027) == 0)
+ {
+ cd4027_update_outlets(x);
+ }
+ else
+ {
+ x->x_state |= CHANGED_4027;
+ }
+ return;
+}
+
+static void cd4027_reset(t_cd4027 *x, t_float f)
+{
+ if (f == 1)
+ {
+ x->x_state |= RESET_4027; /* reset = 1 */
+ }
+ else if (f == 0)
+ {
+ x->x_state &= ~RESET_4027; /* reset = 0 */
+ }
+ else
+ {
+ return;
+ }
+ /* update outlets if not already doing that */
+ if ((x->x_state & UPDATING_4027) == 0)
+ {
+ cd4027_update_outlets(x);
+ }
+ else
+ {
+ x->x_state |= CHANGED_4027;
+ }
+ return;
+}
+
+static void cd4027_j(t_cd4027 *x, t_float f)
+{
+ if (f == 1)
+ {
+ x->x_state |= J_4027; /* j = 1 */
+ }
+ else if (f == 0)
+ {
+ x->x_state &= ~J_4027; /* j = 0 */
+ }
+ else post("cd4027 j takes 1 or 0 only.");
+ return;
+}
+
+static void cd4027_k(t_cd4027 *x, t_float f)
+{
+ if (f == 1)
+ {
+ x->x_state |= K_4027; /* k = 1 */
+ }
+ else if (f == 0)
+ {
+ x->x_state &= ~K_4027; /* k = 0 */
+ }
+ else post("cd4027 k takes 1 or 0 only.");
+ return;
+}
+
+static void cd4027_update_outlets(t_cd4027 *x)
+{
+ /* cd4027_printstate (x); */
+ x->x_state |= UPDATING_4027;/* updating outlets */
+reset:
+ if ((x->x_state & SET_4027) != 0) x->x_state |= Q_4027;
+ else if ((x->x_state & RESET_4027) != 0) x->x_state &= ~Q_4027;
+ x->x_state &= ~CHANGED_4027; /* prepare to flag any changes that occur during outlet_update */
+ outlet_float(x->x_notQ, ((x->x_state & Q_4027) == 0)?1:0);
+/* we might get set or reset as a result of feedback from one of these outlets. */
+ if ((x->x_state & CHANGED_4027) != 0) goto reset;
+ outlet_float(x->x_Q, ((x->x_state & Q_4027) != 0)?1:0);
+ if ((x->x_state & CHANGED_4027) != 0) goto reset;
+ x->x_state &= ~UPDATING_4027;/* finished updating outlets */
+}
+
+static void cd4027_free(t_cd4027 *x)
+{
+ return;
+}
+
+static void *cd4027_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_cd4027 *x;
+
+ x = (t_cd4027 *)pd_new(cd4027_class);
+ if (x == NULL) return (x);
+ x->x_Q = outlet_new((t_object *)x, &s_float);
+ x->x_notQ = outlet_new((t_object *)x, &s_float);
+ x->x_set = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("set"));
+ x->x_reset = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("reset"));
+ x->x_j = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("j"));
+ x->x_k = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("k"));
+ return (x);
+}
+
+void cd4027_setup(void)
+{
+ cd4027_class = class_new(gensym("cd4027"),
+ (t_newmethod)cd4027_new,
+ (t_method)cd4027_free,
+ sizeof(t_cd4027), 0, 0); /* no arguments */
+ class_addbang(cd4027_class, cd4027_bang);
+ class_addfloat(cd4027_class, cd4027_float);
+ class_addmethod(cd4027_class, (t_method)cd4027_reset, gensym("reset"), A_FLOAT, 0);
+ class_addmethod(cd4027_class, (t_method)cd4027_set, gensym("set"), A_FLOAT, 0);
+ class_addmethod(cd4027_class, (t_method)cd4027_j, gensym("j"), A_FLOAT, 0);
+ class_addmethod(cd4027_class, (t_method)cd4027_k, gensym("k"), A_FLOAT, 0);
+}
+/* end cd4027.c */
+
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