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/cd4015.c | 126 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100755 cmos/cd4015.c (limited to 'cmos/cd4015.c') diff --git a/cmos/cd4015.c b/cmos/cd4015.c new file mode 100755 index 0000000..d2f0d68 --- /dev/null +++ b/cmos/cd4015.c @@ -0,0 +1,126 @@ +/* cd4015.c MP 20070315 */ +/* Emulate a cd4015b */ +#include "m_pd.h" + +typedef struct _cd4015 +{ + t_object x_obj; + t_int x_D; + t_int x_R; + t_int x_Clk; + t_int x_Q; + t_outlet *x_outQ1; + t_outlet *x_outQ2; + t_outlet *x_outQ3; + t_outlet *x_outQ4; + t_inlet *x_inD;/* extra inlets are 'live' like the first */ + t_inlet *x_inR; +} t_cd4015; + +static t_class *cd4015_class; + +void cd4015_setup(void); +static void *cd4015_new(t_symbol *s, int argc, t_atom *argv); +static void cd4015_free(t_cd4015 *x); +static void cd4015_float(t_cd4015 *x, t_float f); +static void cd4015_bang(t_cd4015 *x); +static void cd4015_inD(t_cd4015 *x, t_float f); +static void cd4015_inR(t_cd4015 *x, t_float f); +static void cd4015_update_outlets(t_cd4015 *x); + +static void cd4015_float(t_cd4015 *x, t_float f) +{ + if (f == 1) + { + if (x->x_Clk == 0) + { + x->x_Clk = 1; + cd4015_bang(x); + } + } + else if (f == 0) x->x_Clk = 0; + else + { + post("cd4015 Clock inlet accepts 1 or 0."); + return; + } +} + +static void cd4015_bang(t_cd4015 *x) +{ + if (x->x_R == 0) + { /* shift left by one */ + x->x_Q <<= 1; + x->x_Q |= x->x_D; + cd4015_update_outlets(x); + } +} + +static void cd4015_inD(t_cd4015 *x, t_float f) +{ + if (f == 1) x->x_D = 1; + else if (f == 0) x->x_D = 0; + else + { + post("cd4015 D inlet accepts 1 or 0."); + return; + } +} + +static void cd4015_inR(t_cd4015 *x, t_float f) +{ + if (f == 1) + { + x->x_R = 1; + x->x_Q = 0; + cd4015_update_outlets(x); + } + else if (f == 0) x->x_R = 0; + else + { + post("cd4015 R inlet accepts 1 or 0."); + return; + } +} + +static void cd4015_update_outlets(t_cd4015 *x) +{ + outlet_float(x->x_outQ4, ((x->x_Q & 8) != 0)?1:0); + outlet_float(x->x_outQ3, ((x->x_Q & 4) != 0)?1:0); + outlet_float(x->x_outQ2, ((x->x_Q & 2) != 0)?1:0); + outlet_float(x->x_outQ1, ((x->x_Q & 1) != 0)?1:0); +} + +static void cd4015_free(t_cd4015 *x) +{ + return; +} + +static void *cd4015_new(t_symbol *s, int argc, t_atom *argv) +{ + t_cd4015 *x; + + x = (t_cd4015 *)pd_new(cd4015_class); + if (x == NULL) return (x); + x->x_outQ1 = outlet_new((t_object *)x, &s_float); + x->x_outQ2 = outlet_new((t_object *)x, &s_float); + x->x_outQ3 = outlet_new((t_object *)x, &s_float); + x->x_outQ4 = outlet_new((t_object *)x, &s_float); + x->x_inD = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("D")); + x->x_inR = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("R")); + return (x); +} + +void cd4015_setup(void) +{ + cd4015_class = class_new(gensym("cd4015"), + (t_newmethod)cd4015_new, + (t_method)cd4015_free, + sizeof(t_cd4015), 0, 0); /* no arguments */ + class_addfloat(cd4015_class, cd4015_float); + class_addbang(cd4015_class, cd4015_bang); + class_addmethod(cd4015_class, (t_method)cd4015_inD, gensym("D"), A_FLOAT, 0); + class_addmethod(cd4015_class, (t_method)cd4015_inR, gensym("R"), A_FLOAT, 0); +} +/* end cd4015.c */ + -- cgit v1.2.1