diff options
author | Martin Peach <mrpeach@users.sourceforge.net> | 2007-03-20 16:06:17 +0000 |
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committer | Martin Peach <mrpeach@users.sourceforge.net> | 2007-03-20 16:06:17 +0000 |
commit | 8a36990c0305ea2effba5e869351b902ecb429b0 (patch) | |
tree | 01aa72be2cddadbe1f26db56ce17c84f3bf99127 /cmos/cd4516.c | |
parent | af3619555f5c60450da97c74ec3c1f9c14f3133d (diff) |
CMOS digital logic emulation objects
svn path=/trunk/externals/mrpeach/; revision=7509
Diffstat (limited to 'cmos/cd4516.c')
-rwxr-xr-x | cmos/cd4516.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/cmos/cd4516.c b/cmos/cd4516.c new file mode 100755 index 0000000..2949dcf --- /dev/null +++ b/cmos/cd4516.c @@ -0,0 +1,256 @@ +/* cd4516.c MP 20070312 */ +/* Emulate a cd4516b */ +#include "m_pd.h" + +typedef struct _cd4516 +{ + t_object x_obj; + t_outlet *x_Q1Out; + t_outlet *x_Q2Out; + t_outlet *x_Q3Out; + t_outlet *x_Q4Out; + t_outlet *x_CarryOut; + t_int x_clock; + t_int x_upDown; + t_int x_preset_enable; + t_int x_carry; + t_int x_P1; + t_int x_P2; + t_int x_P3; + t_int x_P4; + t_int x_reset; + t_int x_count; + t_inlet *x_UpDownIn;/* All inlets take one or zero as acceptable inputs. */ + t_inlet *x_ResetIn; + t_inlet *x_PresetEnableIn; + t_inlet *x_CarryIn; + t_inlet *x_P1In; + t_inlet *x_P2In; + t_inlet *x_P3In; + t_inlet *x_P4In; + /* 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_cd4516; + +static t_class *cd4516_class; + +void cd4516_setup(void); +static void *cd4516_new(t_symbol *s, int argc, t_atom *argv); +static void cd4516_free(t_cd4516 *x); +static void cd4516_bang(t_cd4516 *x); +static void cd4516_float(t_cd4516 *x, t_float f); +static void cd4516_reset(t_cd4516 *x, t_float f); +static void cd4516_preset_enable(t_cd4516 *x, t_float f); +static void cd4516_up_down(t_cd4516 *x, t_float f); +static void cd4516_carry(t_cd4516 *x, t_float f); +static void cd4516_P1(t_cd4516 *x, t_float f); +static void cd4516_P2(t_cd4516 *x, t_float f); +static void cd4516_P3(t_cd4516 *x, t_float f); +static void cd4516_P4(t_cd4516 *x, t_float f); +static void cd4516_update_outlets(t_cd4516 *x); + +static void cd4516_float(t_cd4516 *x, t_float f) +{ + if (f == 1) + { /* if clock is high and was low, count up. */ + if ((x->x_clock == 0)&&(x->x_reset == 0)&&(x->x_preset_enable == 0)&&(x->x_carry == 0)) + { + x->x_clock = 1; + if (x->x_upDown == 1) x->x_count = (x->x_count + 1)%16; + else x->x_count = (x->x_count - 1)%16; + cd4516_update_outlets(x); + } + } + else if (f == 0) + { + x->x_clock = 0; + } + else post("cd4516 accepts bang, 1 or 0."); +} + +static void cd4516_bang(t_cd4516 *x) +{ + if ((x->x_reset == 0)&&(x->x_preset_enable == 0)&&(x->x_carry == 0)) + { + if (x->x_upDown == 1)x->x_count = (x->x_count + 1)%16; + else x->x_count = (x->x_count - 1)%16; + cd4516_update_outlets(x); + } +} + +static void cd4516_reset(t_cd4516 *x, t_float f) +{ + if (f == 1) + { + if (x->x_reset == 0) + { + x->x_count = 0; + cd4516_update_outlets(x); + x->x_reset = 1; + } + } + else if (f == 0) + { + x->x_reset = 0; + if (x->x_preset_enable == 1) + { /* the strange case of a low-going reset enabling an already high preset enable */ + x->x_count = x->x_P1 + 2*x->x_P2 + 4*x->x_P3 + 8*x->x_P4; + cd4516_update_outlets(x); + } + } + else + { + post("cd4516 reset takes 1 or 0 only."); + return; + } +} + +static void cd4516_preset_enable(t_cd4516 *x, t_float f) +{ + if (f == 0) + { + x->x_preset_enable = 0; + } + else if (f == 1) + { + if (x->x_preset_enable == 0) + { + x->x_preset_enable = 1; + if (x->x_reset == 0) + { + x->x_count = x->x_P1 + 2*x->x_P2 + 4*x->x_P3 + 8*x->x_P4; + cd4516_update_outlets(x); + } + } + } + else + { + post("cd4516 x_preset_enable takes 1 or 0 only."); + return; + } +} + +static void cd4516_up_down(t_cd4516 *x, t_float f) +{ + if (f == 1) + { + x->x_upDown = 1; + } + else if (f == 0) + { + x->x_upDown = 0; + } + else post("cd4516 updown accepts bang, 1 or 0."); +} + +static void cd4516_carry(t_cd4516 *x, t_float f) +{ + if (f == 1) + { + x->x_carry = 1; + } + else if (f == 0) + { + x->x_carry = 0; + } + else post("cd4516 carry accepts bang, 1 or 0."); +} + +static void cd4516_P1(t_cd4516 *x, t_float f) +{ + if (f == 1) x->x_P1 = 1; + else if (f == 0) x->x_P1 = 0; + else + { + post("cd4516 P1 takes 1 or 0 only."); + return; + } +} +static void cd4516_P2(t_cd4516 *x, t_float f) +{ + if (f == 1) x->x_P2 = 1; + else if (f == 0) x->x_P2 = 0; + else + { + post("cd4516 P2 takes 1 or 0 only."); + return; + } +} +static void cd4516_P3(t_cd4516 *x, t_float f) +{ + if (f == 1) x->x_P3 = 1; + else if (f == 0) x->x_P3 = 0; + else + { + post("cd4516 P3 takes 1 or 0 only."); + return; + } +} +static void cd4516_P4(t_cd4516 *x, t_float f) +{ + if (f == 1) x->x_P4 = 1; + else if (f == 0) x->x_P4 = 0; + else + { + post("cd4516 P4 takes 1 or 0 only."); + return; + } +} + +static void cd4516_update_outlets(t_cd4516 *x) +{ + if (x->x_upDown == 1) outlet_float(x->x_CarryOut, (x->x_count == 15)?0:1); + else outlet_float(x->x_CarryOut, (x->x_count == 0)?0:1); + outlet_float(x->x_Q4Out, ((x->x_count & 8) != 0)?1:0); + outlet_float(x->x_Q3Out, ((x->x_count & 4) != 0)?1:0); + outlet_float(x->x_Q2Out, ((x->x_count & 2) != 0)?1:0); + outlet_float(x->x_Q1Out, ((x->x_count & 1) != 0)?1:0); +} + +static void cd4516_free(t_cd4516 *x) +{ + return; +} + +static void *cd4516_new(t_symbol *s, int argc, t_atom *argv) +{ + t_cd4516 *x; + + x = (t_cd4516 *)pd_new(cd4516_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_CarryOut = outlet_new((t_object *)x, &s_float); + + x->x_UpDownIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("updown")); + x->x_ResetIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("reset")); + x->x_PresetEnableIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("presetenable")); + x->x_CarryIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("carry")); + x->x_P1In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P1")); + x->x_P2In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P2")); + x->x_P3In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P3")); + x->x_P4In = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("P4")); + return (x); +} + +void cd4516_setup(void) +{ + cd4516_class = class_new(gensym("cd4516"), + (t_newmethod)cd4516_new, + (t_method)cd4516_free, + sizeof(t_cd4516), 0, 0); /* no arguments */ + class_addbang(cd4516_class, cd4516_bang); + class_addfloat(cd4516_class, cd4516_float); + class_addmethod(cd4516_class, (t_method)cd4516_up_down, gensym("updown"), A_FLOAT, 0); + class_addmethod(cd4516_class, (t_method)cd4516_preset_enable, gensym("presetenable"), A_FLOAT, 0); + class_addmethod(cd4516_class, (t_method)cd4516_reset, gensym("reset"), A_FLOAT, 0); + class_addmethod(cd4516_class, (t_method)cd4516_carry, gensym("carry"), A_FLOAT, 0); + class_addmethod(cd4516_class, (t_method)cd4516_P1, gensym("P1"), A_FLOAT, 0); + class_addmethod(cd4516_class, (t_method)cd4516_P2, gensym("P2"), A_FLOAT, 0); + class_addmethod(cd4516_class, (t_method)cd4516_P3, gensym("P3"), A_FLOAT, 0); + class_addmethod(cd4516_class, (t_method)cd4516_P4, gensym("P4"), A_FLOAT, 0); +} +/* end cd4516.c */ + |