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/cd4094.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100755 cmos/cd4094.c (limited to 'cmos/cd4094.c') diff --git a/cmos/cd4094.c b/cmos/cd4094.c new file mode 100755 index 0000000..0d7097a --- /dev/null +++ b/cmos/cd4094.c @@ -0,0 +1,186 @@ +/* cd4094.c MP 20070312 */ +/* Emulate a cd4094b */ +#include "m_pd.h" + +typedef struct _cd4094 +{ + t_object x_obj; + t_outlet *x_Q1Out; + t_outlet *x_Q2Out; + t_outlet *x_Q3Out; + t_outlet *x_Q4Out; + t_outlet *x_Q5Out; + t_outlet *x_Q6Out; + t_outlet *x_Q7Out; + t_outlet *x_Q8Out; + t_outlet *x_QSOut; + t_outlet *x_QprimeSOut; + t_int x_clock; + t_int x_data; + t_int x_data_in; + t_int x_strobe; + t_int x_output_enable; + t_int x_qprime; + t_inlet *x_StrobeIn;/* Strobe takes one or zero as acceptable inputs. */ + t_inlet *x_DataIn;/* Data takes one or zero as acceptable inputs. */ + t_inlet *x_OutputEnable;/* Output Enable 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_cd4094; + +static t_class *cd4094_class; + +void cd4094_setup(void); +static void *cd4094_new(t_symbol *s, int argc, t_atom *argv); +static void cd4094_free(t_cd4094 *x); +static void cd4094_bang(t_cd4094 *x); +static void cd4094_float(t_cd4094 *x, t_float f); +static void cd4094_strobe(t_cd4094 *x, t_float f); +static void cd4094_data(t_cd4094 *x, t_float f); +static void cd4094_output_enable(t_cd4094 *x, t_float f); +static void cd4094_update_outlets(t_cd4094 *x); + +static void cd4094_float(t_cd4094 *x, t_float f) +{ + if (f == 1) + { /* if clock is high and was low, clock it. */ + if ((x->x_clock == 0)&&(x->x_strobe == 1)) + { + x->x_data <<= 1; + if (x->x_data_in != 0) x->x_data |= 1; + cd4094_update_outlets(x); + } + x->x_clock = 1; + } + else if (f == 0) + { + if (x->x_clock == 1) /* if clock was high and is low, clock Q prime. */ + { + x->x_qprime = ((x->x_data & 256) != 0)?1:0; + outlet_float(x->x_QprimeSOut, x->x_qprime); + } + x->x_clock = 0; + } + else post("cd4094 accepts bang, 1 or 0."); +} + +static void cd4094_bang(t_cd4094 *x) +{ + if (x->x_strobe == 1) + { + /* rising edge clock */ + x->x_data <<= 1; + if (x->x_data_in != 0) x->x_data |= 1; + cd4094_update_outlets(x); + /* Q'7 is clocked on a falling edge */ + x->x_qprime = ((x->x_data & 256) != 0)?1:0; + outlet_float(x->x_QprimeSOut, x->x_qprime); + } +} + +static void cd4094_strobe(t_cd4094 *x, t_float f) +{ + if (f == 1) + { + x->x_strobe = 1; + } + else if (f == 0) + { + x->x_strobe = 0; + } + else + { + post("cd4094 strobe takes 1 or 0 only."); + return; + } +} + +static void cd4094_output_enable(t_cd4094 *x, t_float f) +{ + if (f == 1) + { + x->x_output_enable = 1; + cd4094_update_outlets(x); + } + else if (f == 0) + { + x->x_output_enable = 0; + } + else + { + post("cd4094 output enable takes 1 or 0 only."); + return; + } +} + +static void cd4094_data(t_cd4094 *x, t_float f) +{ + if (f == 1) x->x_data_in = 1; + else if (f == 0) x->x_data_in = 0; + else + { + post("cd4094 data takes 1 or 0 only."); + return; + } +} + +static void cd4094_update_outlets(t_cd4094 *x) +{ + outlet_float(x->x_QprimeSOut, ((x->x_qprime) != 0)?1:0); + outlet_float(x->x_QSOut, ((x->x_data & 256) != 0)?1:0); + if (x->x_output_enable != 0) + { + outlet_float(x->x_QSOut, ((x->x_data & 256) != 0)?1:0); + outlet_float(x->x_Q8Out, ((x->x_data & 128) != 0)?1:0); + outlet_float(x->x_Q7Out, ((x->x_data & 64) != 0)?1:0); + outlet_float(x->x_Q6Out, ((x->x_data & 32) != 0)?1:0); + outlet_float(x->x_Q5Out, ((x->x_data & 16) != 0)?1:0); + outlet_float(x->x_Q4Out, ((x->x_data & 8) != 0)?1:0); + outlet_float(x->x_Q3Out, ((x->x_data & 4) != 0)?1:0); + outlet_float(x->x_Q2Out, ((x->x_data & 2) != 0)?1:0); + outlet_float(x->x_Q1Out, ((x->x_data & 1) != 0)?1:0); + } +} + +static void cd4094_free(t_cd4094 *x) +{ + return; +} + +static void *cd4094_new(t_symbol *s, int argc, t_atom *argv) +{ + t_cd4094 *x; + + x = (t_cd4094 *)pd_new(cd4094_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_Q5Out = outlet_new((t_object *)x, &s_float); + x->x_Q6Out = outlet_new((t_object *)x, &s_float); + x->x_Q7Out = outlet_new((t_object *)x, &s_float); + x->x_Q8Out = outlet_new((t_object *)x, &s_float); + x->x_QSOut = outlet_new((t_object *)x, &s_float); + x->x_QprimeSOut = outlet_new((t_object *)x, &s_float); + + x->x_StrobeIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("strobe")); + x->x_DataIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("data")); + x->x_OutputEnable = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("enableoutput")); + return (x); +} + +void cd4094_setup(void) +{ + cd4094_class = class_new(gensym("cd4094"), + (t_newmethod)cd4094_new, + (t_method)cd4094_free, + sizeof(t_cd4094), 0, 0); /* no arguments */ + class_addbang(cd4094_class, cd4094_bang); + class_addfloat(cd4094_class, cd4094_float); + class_addmethod(cd4094_class, (t_method)cd4094_strobe, gensym("strobe"), A_FLOAT, 0); + class_addmethod(cd4094_class, (t_method)cd4094_data, gensym("data"), A_FLOAT, 0); + class_addmethod(cd4094_class, (t_method)cd4094_output_enable, gensym("enableoutput"), A_FLOAT, 0); +} +/* end cd4094.c */ + -- cgit v1.2.1