From 8a36990c0305ea2effba5e869351b902ecb429b0 Mon Sep 17 00:00:00 2001 From: Martin Peach Date: Tue, 20 Mar 2007 16:06:17 +0000 Subject: CMOS digital logic emulation objects svn path=/trunk/externals/mrpeach/; revision=7509 --- cmos/cd4013.c | 183 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 183 insertions(+) create mode 100755 cmos/cd4013.c (limited to 'cmos/cd4013.c') diff --git a/cmos/cd4013.c b/cmos/cd4013.c new file mode 100755 index 0000000..c92f635 --- /dev/null +++ b/cmos/cd4013.c @@ -0,0 +1,183 @@ +/* cd4013.c MP 20070306 */ +/* Emulate a cd4013b */ +#include "m_pd.h" + +typedef struct _cd4013 +{ + 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_d;/* d 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_cd4013; + +#define SET_4013 1 +#define CLOCK_4013 2 +#define RESET_4013 4 +#define D_4013 8 +#define Q_4013 16 +#define UPDATING_4013 32 +#define CHANGED_4013 64 + +static t_class *cd4013_class; + +void cd4013_setup(void); +static void *cd4013_new(t_symbol *s, int argc, t_atom *argv); +static void cd4013_free(t_cd4013 *x); +static void cd4013_bang(t_cd4013 *x); +static void cd4013_float(t_cd4013 *x, t_float f); +static void cd4013_set(t_cd4013 *x, t_float f); +static void cd4013_reset(t_cd4013 *x, t_float f); +static void cd4013_d(t_cd4013 *x, t_float f); +static void cd4013_update_outlets(t_cd4013 *x); +static void cd4013_printstate (t_cd4013 *x); + +static void cd4013_float(t_cd4013 *x, t_float f) +{ + if (f == 1) + { /* if clock is high and was low, clock it. */ + if ((x->x_state & CLOCK_4013) == 0) cd4013_bang(x); + x->x_state |= CLOCK_4013; + } + else if (f == 0) x->x_state &= ~CLOCK_4013; + else post("cd4013 accepts bang, 1 or 0."); +} + +static void cd4013_printstate (t_cd4013 *x) +{ + post ("SET %d RESET %d D %d Q %d", ((x->x_state & SET_4013) != 0)?1:0 + , ((x->x_state & RESET_4013) != 0)?1:0 + , ((x->x_state & D_4013) != 0)?1:0 + , ((x->x_state & Q_4013) != 0)?1:0); +} + +static void cd4013_bang(t_cd4013 *x) +{ + if ((x->x_state & (SET_4013 | RESET_4013)) == 0) + { /* if set is low and reset is low, clock forward */ + if ((x->x_state & D_4013) != 0) x->x_state |= Q_4013; + else x->x_state &= ~Q_4013; + cd4013_update_outlets(x); + } +} + +static void cd4013_set(t_cd4013 *x, t_float f) +{ + if (f == 1) + { + x->x_state |= SET_4013; /* set = 1 */ + } + else if (f == 0) + { + x->x_state &= ~SET_4013; /* set = 0 */ + } + else + { + post("cd4013 set takes 1 or 0 only."); + return; + } + /* update outlets if not already doing that */ + if ((x->x_state & UPDATING_4013) == 0) + { + cd4013_update_outlets(x); + } + else + { + x->x_state |= CHANGED_4013; + } + return; +} + +static void cd4013_reset(t_cd4013 *x, t_float f) +{ + if (f == 1) + { + x->x_state |= RESET_4013; /* reset = 1 */ + } + else if (f == 0) + { + x->x_state &= ~RESET_4013; /* reset = 0 */ + } + else + { + return; + } + /* update outlets if not already doing that */ + if ((x->x_state & UPDATING_4013) == 0) + { + cd4013_update_outlets(x); + } + else + { + x->x_state |= CHANGED_4013; + } + return; +} + +static void cd4013_d(t_cd4013 *x, t_float f) +{ + if (f == 1) + { + x->x_state |= D_4013; /* d = 1 */ + } + else if (f == 0) + { + x->x_state &= ~D_4013; /* d = 0 */ + } + else post("cd4013 d takes 1 or 0 only."); + return; +} + +static void cd4013_update_outlets(t_cd4013 *x) +{ + /* cd4013_printstate (x); */ + x->x_state |= UPDATING_4013;/* updating outlets */ +reset: + if ((x->x_state & SET_4013) != 0) x->x_state |= Q_4013; + else if ((x->x_state & RESET_4013) != 0) x->x_state &= ~Q_4013; + x->x_state &= ~CHANGED_4013; /* prepare to flag any changes that occur during outlet_update */ + outlet_float(x->x_notQ, ((x->x_state & Q_4013) == 0)?1:0); +/* we might get set or reset as a result of feedback from one of these outlets. */ + if ((x->x_state & CHANGED_4013) != 0) goto reset; + outlet_float(x->x_Q, ((x->x_state & Q_4013) != 0)?1:0); + if ((x->x_state & CHANGED_4013) != 0) goto reset; + x->x_state &= ~UPDATING_4013;/* finished updating outlets */ +} + +static void cd4013_free(t_cd4013 *x) +{ + return; +} + +static void *cd4013_new(t_symbol *s, int argc, t_atom *argv) +{ + t_cd4013 *x; + + x = (t_cd4013 *)pd_new(cd4013_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_d = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("d")); + return (x); +} + +void cd4013_setup(void) +{ + cd4013_class = class_new(gensym("cd4013"), + (t_newmethod)cd4013_new, + (t_method)cd4013_free, + sizeof(t_cd4013), 0, 0); /* no arguments */ + class_addbang(cd4013_class, cd4013_bang); + class_addfloat(cd4013_class, cd4013_float); + class_addmethod(cd4013_class, (t_method)cd4013_reset, gensym("reset"), A_FLOAT, 0); + class_addmethod(cd4013_class, (t_method)cd4013_set, gensym("set"), A_FLOAT, 0); + class_addmethod(cd4013_class, (t_method)cd4013_d, gensym("d"), A_FLOAT, 0); +} +/* end cd4013.c */ + -- cgit v1.2.1