Generate x out for x select on wide muxes.
This commit is contained in:
steve
parent
60046cc790
commit
e79f62c5fa
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@ -17,7 +17,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: draw_mux.c,v 1.4 2002/08/12 01:35:03 steve Exp $"
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#ident "$Id: draw_mux.c,v 1.5 2002/08/29 03:04:01 steve Exp $"
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#endif
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# include "vvp_priv.h"
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@ -28,6 +28,10 @@
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# include <stdlib.h>
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# include <string.h>
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/*
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* This draws a general mux, a slice at a time. Use MUXX so that
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* unknows lead to unknown output.
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*/
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static void draw_lpm_mux_bitslice(ivl_lpm_t net, unsigned slice)
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{
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unsigned sel = ivl_lpm_selects(net);
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@ -55,7 +59,7 @@ static void draw_lpm_mux_bitslice(ivl_lpm_t net, unsigned slice)
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select vector. */
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for (idx = 0 ; idx < size ; idx += 2) {
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fprintf(vvp_out, "L_%s/%u/%u/%u .functor MUXZ, ",
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fprintf(vvp_out, "L_%s/%u/%u/%u .functor MUXX, ",
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vvp_mangle_id(ivl_lpm_name(net)), slice, sel, idx);
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{
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@ -76,7 +80,7 @@ static void draw_lpm_mux_bitslice(ivl_lpm_t net, unsigned slice)
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fprintf(vvp_out, ", C<1>;\n");
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}
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/* Draw the tree of MUXZ devices to connect the inner tree
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/* Draw the tree of MUXX devices to connect the inner tree
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nodes. */
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for (seldx = 1 ; seldx < (sel-1) ; seldx += 1) {
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unsigned level = sel - seldx;
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@ -84,7 +88,7 @@ static void draw_lpm_mux_bitslice(ivl_lpm_t net, unsigned slice)
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s = ivl_lpm_select(net, seldx);
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for (idx = 0 ; idx < size ; idx += span) {
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fprintf(vvp_out, "L_%s/%u/%u/%u .functor MUXZ, ",
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fprintf(vvp_out, "L_%s/%u/%u/%u .functor MUXX, ",
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vvp_mangle_id(ivl_lpm_name(net)), slice, level, idx);
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fprintf(vvp_out, "L_%s/%u/%u/%u, ",
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@ -106,7 +110,7 @@ static void draw_lpm_mux_bitslice(ivl_lpm_t net, unsigned slice)
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s = ivl_lpm_select(net, sel-1);
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fprintf(vvp_out, "L_%s/%u .functor MUXZ, ",
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fprintf(vvp_out, "L_%s/%u .functor MUXX, ",
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vvp_mangle_id(ivl_lpm_name(net)), slice);
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fprintf(vvp_out, "L_%s/%u/2/0, ",
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@ -172,6 +176,9 @@ void draw_lpm_mux(ivl_lpm_t net)
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/*
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* $Log: draw_mux.c,v $
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* Revision 1.5 2002/08/29 03:04:01 steve
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* Generate x out for x select on wide muxes.
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*
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* Revision 1.4 2002/08/12 01:35:03 steve
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* conditional ident string using autoconfig.
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*
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@ -17,7 +17,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: draw_tt.c,v 1.13 2002/08/12 01:35:08 steve Exp $"
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#ident "$Id: draw_tt.c,v 1.14 2002/08/29 03:04:01 steve Exp $"
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#endif
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# include <stdio.h>
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@ -284,6 +284,44 @@ static void draw_NMOS(void)
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printf("};\n");
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}
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static void draw_MUXX(void)
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{
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unsigned i0, i1, i2, i3;
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printf("const unsigned char ft_MUXX[64] = {");
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for (i3 = 0 ; i3 < 4 ; i3 += 1)
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for (i2 = 0 ; i2 < 4 ; i2 += 1) {
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printf("\n ");
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for (i1 = 0 ; i1 < 4 ; i1 += 1) {
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unsigned idx = (i3 << 4) | (i2 << 2) | i1;
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unsigned char byte = 0;
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for (i0 = 0 ; i0 < 4 ; i0 += 1) {
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unsigned val;
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if (i3 == 0)
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val = 3;
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else if (i3 == 2)
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val = 2;
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else if (i3 == 3)
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val = 2;
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else if (i2 >= 2) {
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val = 2;
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} else if (i2 == 0)
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val = i0;
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else
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val = i1;
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byte |= val << (i0*2);
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}
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printf("0x%02x, ", byte);
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}
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}
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printf("};\n");
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}
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static void draw_MUXZ(void)
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{
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unsigned i0, i1, i2, i3;
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@ -628,6 +666,7 @@ main()
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draw_BUFZ();
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draw_PMOS();
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draw_NMOS();
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draw_MUXX();
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draw_MUXZ();
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draw_EEQ();
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draw_NAND();
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@ -643,6 +682,9 @@ main()
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/*
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* $Log: draw_tt.c,v $
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* Revision 1.14 2002/08/29 03:04:01 steve
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* Generate x out for x select on wide muxes.
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*
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* Revision 1.13 2002/08/12 01:35:08 steve
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* conditional ident string using autoconfig.
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*
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@ -17,7 +17,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: logic.cc,v 1.10 2002/08/12 01:35:08 steve Exp $"
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#ident "$Id: logic.cc,v 1.11 2002/08/29 03:04:01 steve Exp $"
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#endif
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# include "logic.h"
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@ -112,6 +112,9 @@ void compile_functor(char*label, char*type,
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} else if (strcmp(type, "RNMOS") == 0) {
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obj = new vvp_rnmos_s;
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} else if (strcmp(type, "MUXX") == 0) {
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obj = new table_functor_s(ft_MUXX);
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} else if (strcmp(type, "MUXZ") == 0) {
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obj = new table_functor_s(ft_MUXZ);
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@ -164,6 +167,9 @@ void compile_functor(char*label, char*type,
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/*
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* $Log: logic.cc,v $
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* Revision 1.11 2002/08/29 03:04:01 steve
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* Generate x out for x select on wide muxes.
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*
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* Revision 1.10 2002/08/12 01:35:08 steve
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* conditional ident string using autoconfig.
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*
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@ -19,7 +19,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: logic.h,v 1.5 2002/08/12 01:35:08 steve Exp $"
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#ident "$Id: logic.h,v 1.6 2002/08/29 03:04:01 steve Exp $"
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#endif
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# include "functor.h"
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@ -51,6 +51,7 @@ extern const unsigned char ft_BUFIF1[];
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extern const unsigned char ft_BUFZ[];
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extern const unsigned char ft_PMOS[];
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extern const unsigned char ft_NMOS[];
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extern const unsigned char ft_MUXX[];
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extern const unsigned char ft_MUXZ[];
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extern const unsigned char ft_EEQ[];
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extern const unsigned char ft_NAND[];
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@ -63,6 +64,9 @@ extern const unsigned char ft_var[];
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/*
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* $Log: logic.h,v $
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* Revision 1.6 2002/08/29 03:04:01 steve
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* Generate x out for x select on wide muxes.
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*
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* Revision 1.5 2002/08/12 01:35:08 steve
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* conditional ident string using autoconfig.
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*
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