luke
/
iverilog
mirror of https://github.com/steveicarus/iverilog.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Calculate NOR and NOT tables, and also the hex_digits table.

This commit is contained in:
steve 2001-03-25 19:37:26 +00:00
parent 604ce0db09
commit 16f514739f
1 changed files with 119 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

120
vvp/draw_tt.c
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: draw_tt.c,v 1.1 2001/03/11 22:42:11 steve Exp $"
#ident "$Id: draw_tt.c,v 1.2 2001/03/25 19:37:26 steve Exp $"
#endif
# include <stdio.h>
@ -56,6 +56,72 @@ static void draw_AND(void)
printf("};\n");
}
static void draw_NOR(void)
{
unsigned i0, i1, i2, i3;
printf("const unsigned char ft_NOR[64] = {");
for (i3 = 0 ; i3 < 4 ; i3 += 1)
for (i2 = 0 ; i2 < 4 ; i2 += 1) {
printf("\n ");
for (i1 = 0 ; i1 < 4 ; i1 += 1) {
unsigned idx = (i3 << 4) | (i2 << 2) | i1;
unsigned char byte = 0;
for (i0 = 0 ; i0 < 4 ; i0 += 1) {
unsigned val;
if ((i0 == 1) || (i1 == 1) ||
(i2 == 1) || (i3 == 1))
val = 0;
else if ((i0 == 0) && (i1 == 0) &&
(i2 == 0) && (i3 == 0))
val = 1;
else
val = 2;
byte |= val << (i0*2);
}
printf("0x%02x, ", byte);
}
}
printf("};\n");
}
static void draw_NOT(void)
{
unsigned i0, i1, i2, i3;
printf("const unsigned char ft_NOT[64] = {");
for (i3 = 0 ; i3 < 4 ; i3 += 1)
for (i2 = 0 ; i2 < 4 ; i2 += 1) {
printf("\n ");
for (i1 = 0 ; i1 < 4 ; i1 += 1) {
unsigned idx = (i3 << 4) | (i2 << 2) | i1;
unsigned char byte = 0;
for (i0 = 0 ; i0 < 4 ; i0 += 1) {
unsigned val;
if (i0 == 1)
val = 0;
else if (i0 == 0)
val = 1;
else
val = 2;
byte |= val << (i0*2);
}
printf("0x%02x, ", byte);
}
}
printf("};\n");
}
static void draw_OR(void)
{
unsigned i0, i1, i2, i3;
@ -90,16 +156,68 @@ static void draw_OR(void)
printf("};\n");
}
static void draw_hex_table()
{
unsigned idx;
printf("extern const char hex_digits[256] = {\n");
for (idx = 0 ; idx < 256 ; idx += 1) {
unsigned cnt_z = 0, cnt_x = 0;
unsigned bv = 0, bdx;
for (bdx = 0 ; bdx < 4 ; bdx += 1) {
switch ((idx >> (bdx * 2)) & 3) {
case 0:
break;
case 1:
bv |= 1<<bdx;
break;
case 2:
cnt_x += 1;
break;
case 3:
cnt_z += 1;
break;
}
}
if (cnt_z == 4)
printf(" 'z',");
else if (cnt_x == 4)
printf(" 'x',");
else if ((cnt_z > 0) && (cnt_x == 0))
printf(" 'Z',");
else if (cnt_x > 0)
printf(" 'X',");
else
printf(" '%c',", "0123456789abcdef"[bv]);
if (((idx+1) % 8) == 0)
printf("\n");
}
printf("};\n");
}
main()
{
printf("# include \"functor.h\"\n");
draw_AND();
draw_NOR();
draw_NOT();
draw_OR();
draw_hex_table();
return 0;
}
/*
* $Log: draw_tt.c,v $
* Revision 1.2 2001/03/25 19:37:26 steve
* Calculate NOR and NOT tables, and also the hex_digits table.
*
* Revision 1.1 2001/03/11 22:42:11 steve
* Functor values and propagation.
*