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/cd40193.c | 250 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 250 insertions(+) create mode 100755 cmos/cd40193.c (limited to 'cmos/cd40193.c') diff --git a/cmos/cd40193.c b/cmos/cd40193.c new file mode 100755 index 0000000..22bdcbc --- /dev/null +++ b/cmos/cd40193.c @@ -0,0 +1,250 @@ +/* cd40193.c MP 20070312 */ +/* Emulate a cd40193b */ +#include "m_pd.h" + +typedef struct _cd40193 +{ + t_object x_obj; + t_outlet *x_QAOut; + t_outlet *x_QBOut; + t_outlet *x_QCOut; + t_outlet *x_QDOut; + t_outlet *x_CarryOut; + t_outlet *x_BorrowOut; + t_int x_countUp; + t_int x_countDown; + t_int x_dataA; + t_int x_dataB; + t_int x_dataC; + t_int x_dataD; + t_int x_load; + t_int x_clear; + t_int x_count; + t_inlet *x_CountDownIn;/* All inlets take one or zero as acceptable inputs. */ + t_inlet *x_ClearIn; + t_inlet *x_LoadIn; + t_inlet *x_DataAIn; + t_inlet *x_DataBIn; + t_inlet *x_DataCIn; + t_inlet *x_DataDIn; + /* 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_cd40193; + +static t_class *cd40193_class; + +void cd40193_setup(void); +static void *cd40193_new(t_symbol *s, int argc, t_atom *argv); +static void cd40193_free(t_cd40193 *x); +static void cd40193_bang(t_cd40193 *x); +static void cd40193_float(t_cd40193 *x, t_float f); +static void cd40193_clear(t_cd40193 *x, t_float f); +static void cd40193_load(t_cd40193 *x, t_float f); +static void cd40193_count_down(t_cd40193 *x, t_float f); +static void cd40193_data_A(t_cd40193 *x, t_float f); +static void cd40193_data_B(t_cd40193 *x, t_float f); +static void cd40193_data_C(t_cd40193 *x, t_float f); +static void cd40193_data_D(t_cd40193 *x, t_float f); +static void cd40193_update_outlets(t_cd40193 *x); + +static void cd40193_float(t_cd40193 *x, t_float f) +{ + if (f == 1) + { /* if clock is high and was low, count up. */ + if ((x->x_countUp == 0)&&(x->x_countDown == 1)&&(x->x_clear == 0)&&(x->x_load == 1)) + { + x->x_countUp = 1; + x->x_count = (x->x_count + 1)%16; + cd40193_update_outlets(x); + } + } + else if (f == 0) + { + if ((x->x_countUp == 1) && (x->x_count == 15)) outlet_float(x->x_CarryOut, 0); + x->x_countUp = 0; + } + else post("cd40193 accepts bang, 1 or 0."); +} + +static void cd40193_bang(t_cd40193 *x) +{ + if ((x->x_countDown == 1)&&(x->x_clear == 0)&&(x->x_load == 1)) + { + x->x_countUp = 1; + x->x_count = (x->x_count + 1)%16; + cd40193_update_outlets(x); + if (x->x_count == 15) outlet_float(x->x_CarryOut, 0); + } +} + +static void cd40193_clear(t_cd40193 *x, t_float f) +{ + if (f == 1) + { + if (x->x_clear == 0) + { + x->x_count = 0; + cd40193_update_outlets(x); + x->x_clear = 1; + } + } + else if (f == 0) + { + x->x_clear = 0; + if (x->x_load == 0) + { /* the strange case of a low-going clear enabling an already low load */ + x->x_count = x->x_dataA + 2*x->x_dataB + 4*x->x_dataC + 8*x->x_dataD; + cd40193_update_outlets(x); + } + } + else + { + post("cd40193 clear takes 1 or 0 only."); + return; + } +} + +static void cd40193_load(t_cd40193 *x, t_float f) +{ + if (f == 1) + { + x->x_load = 1; + } + else if (f == 0) + { + if (x->x_load == 1) + { + x->x_load = 0; + if (x->x_clear == 0) + { + x->x_count = x->x_dataA + 2*x->x_dataB + 4*x->x_dataC + 8*x->x_dataD; + cd40193_update_outlets(x); + } + } + } + else + { + post("cd40193 load takes 1 or 0 only."); + return; + } +} + +static void cd40193_count_down(t_cd40193 *x, t_float f) +{ + if (f == 1) + { /* if clock is high and was low, count down. */ + if (x->x_countDown == 0) + { + x->x_countDown = 1; + if((x->x_countUp == 1)&&(x->x_clear == 0)&&(x->x_load = 1)) + { + x->x_count = (x->x_count - 1)%16; + cd40193_update_outlets(x); + } + } + } + else if (f == 0) + { + if ((x->x_countDown == 1) && (x->x_count == 0)) outlet_float(x->x_BorrowOut, 0); + x->x_countDown = 0; + } + else post("cd40193 count down accepts bang, 1 or 0."); +} + +static void cd40193_data_A(t_cd40193 *x, t_float f) +{ + if (f == 1) x->x_dataA = 1; + else if (f == 0) x->x_dataA = 0; + else + { + post("cd40193 data A takes 1 or 0 only."); + return; + } +} +static void cd40193_data_B(t_cd40193 *x, t_float f) +{ + if (f == 1) x->x_dataB = 1; + else if (f == 0) x->x_dataB = 0; + else + { + post("cd40193 data B takes 1 or 0 only."); + return; + } +} +static void cd40193_data_C(t_cd40193 *x, t_float f) +{ + if (f == 1) x->x_dataC = 1; + else if (f == 0) x->x_dataC = 0; + else + { + post("cd40193 data C takes 1 or 0 only."); + return; + } +} +static void cd40193_data_D(t_cd40193 *x, t_float f) +{ + if (f == 1) x->x_dataD = 1; + else if (f == 0) x->x_dataD = 0; + else + { + post("cd40193 data D takes 1 or 0 only."); + return; + } +} + +static void cd40193_update_outlets(t_cd40193 *x) +{ + outlet_float(x->x_BorrowOut, 1); + outlet_float(x->x_CarryOut, 1); + outlet_float(x->x_QDOut, ((x->x_count & 8) != 0)?1:0); + outlet_float(x->x_QCOut, ((x->x_count & 4) != 0)?1:0); + outlet_float(x->x_QBOut, ((x->x_count & 2) != 0)?1:0); + outlet_float(x->x_QAOut, ((x->x_count & 1) != 0)?1:0); +} + +static void cd40193_free(t_cd40193 *x) +{ + return; +} + +static void *cd40193_new(t_symbol *s, int argc, t_atom *argv) +{ + t_cd40193 *x; + + x = (t_cd40193 *)pd_new(cd40193_class); + if (x == NULL) return (x); + x->x_QAOut = outlet_new((t_object *)x, &s_float); + x->x_QBOut = outlet_new((t_object *)x, &s_float); + x->x_QCOut = outlet_new((t_object *)x, &s_float); + x->x_QDOut = outlet_new((t_object *)x, &s_float); + x->x_CarryOut = outlet_new((t_object *)x, &s_float); + x->x_BorrowOut = outlet_new((t_object *)x, &s_float); + + x->x_CountDownIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("countdown")); + x->x_ClearIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("clear")); + x->x_LoadIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("load")); + x->x_DataAIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataA")); + x->x_DataBIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataB")); + x->x_DataCIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataC")); + x->x_DataDIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataD")); + return (x); +} + +void cd40193_setup(void) +{ + cd40193_class = class_new(gensym("cd40193"), + (t_newmethod)cd40193_new, + (t_method)cd40193_free, + sizeof(t_cd40193), 0, 0); /* no arguments */ + class_addbang(cd40193_class, cd40193_bang); + class_addfloat(cd40193_class, cd40193_float); + class_addmethod(cd40193_class, (t_method)cd40193_count_down, gensym("countdown"), A_FLOAT, 0); + class_addmethod(cd40193_class, (t_method)cd40193_load, gensym("load"), A_FLOAT, 0); + class_addmethod(cd40193_class, (t_method)cd40193_clear, gensym("clear"), A_FLOAT, 0); + class_addmethod(cd40193_class, (t_method)cd40193_data_A, gensym("dataA"), A_FLOAT, 0); + class_addmethod(cd40193_class, (t_method)cd40193_data_B, gensym("dataB"), A_FLOAT, 0); + class_addmethod(cd40193_class, (t_method)cd40193_data_C, gensym("dataC"), A_FLOAT, 0); + class_addmethod(cd40193_class, (t_method)cd40193_data_D, gensym("dataD"), A_FLOAT, 0); +} +/* end cd40193.c */ + -- cgit v1.2.1