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Generic ADD code.

This commit is contained in:
steve 2001-09-01 04:30:44 +00:00
parent 16023cbbd6
commit 2996d2eb19
3 changed files with 124 additions and 4 deletions
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112
tgt-fpga/d-generic.c
View File

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#ident "$Id: d-generic.c,v 1.6 2001/09/01 02:28:42 steve Exp $" #ident "$Id: d-generic.c,v 1.7 2001/09/01 04:30:44 steve Exp $"
# include "device.h" # include "device.h"
# include "fpga_priv.h" # include "fpga_priv.h"
@ -301,17 +301,125 @@ static void generic_show_mux(ivl_lpm_t net)
} }
} }
/*
* This code cheats and just generates ADD4 devices enough to support
* the add. Make no effort to optimize, because we have no idea what
* kind of device we have.
*/
static void generic_show_add(ivl_lpm_t net)
{
char name[1024];
ivl_nexus_t nex;
unsigned idx, nadd4, tail;
mangle_lpm_name(net, name, sizeof name);
/* Make this many ADD4 devices. */
nadd4 = ivl_lpm_width(net) / 4;
tail = ivl_lpm_width(net) % 4;
for (idx = 0 ; idx < nadd4 ; idx += 1) {
fprintf(xnf, "SYM, %s/A%u, ADD4\n", name, idx);
if (idx > 0)
fprintf(xnf, " PIN, CI, I, %s/CO%u\n", name, idx-1);
nex = ivl_lpm_q(net, idx*4+0);
draw_pin(nex, "S0", 'O');
nex = ivl_lpm_q(net, idx*4+1);
draw_pin(nex, "S1", 'O');
nex = ivl_lpm_q(net, idx*4+2);
draw_pin(nex, "S2", 'O');
nex = ivl_lpm_q(net, idx*4+3);
draw_pin(nex, "S3", 'O');
nex = ivl_lpm_data(net, idx*4+0);
draw_pin(nex, "A0", 'I');
nex = ivl_lpm_data(net, idx*4+1);
draw_pin(nex, "A1", 'I');
nex = ivl_lpm_data(net, idx*4+2);
draw_pin(nex, "A2", 'I');
nex = ivl_lpm_data(net, idx*4+3);
draw_pin(nex, "A3", 'I');
nex = ivl_lpm_datab(net, idx*4+0);
draw_pin(nex, "B0", 'I');
nex = ivl_lpm_datab(net, idx*4+1);
draw_pin(nex, "B1", 'I');
nex = ivl_lpm_datab(net, idx*4+2);
draw_pin(nex, "B2", 'I');
nex = ivl_lpm_datab(net, idx*4+3);
draw_pin(nex, "B3", 'I');
if ((idx*4+4) < ivl_lpm_width(net))
fprintf(xnf, " PIN, CO, O, %s/CO%u\n", name, idx);
fprintf(xnf, "END\n");
}
if (tail > 0) {
fprintf(xnf, "SYM, %s/A%u, ADD4\n", name, nadd4);
if (nadd4 > 0)
fprintf(xnf, " PIN, CI, I, %s/CO%u\n", name, nadd4-1);
switch (tail) {
case 3:
nex = ivl_lpm_data(net, nadd4*4+2);
draw_pin(nex, "A2", 'I');
nex = ivl_lpm_datab(net, nadd4*4+2);
draw_pin(nex, "B2", 'I');
nex = ivl_lpm_q(net, nadd4*4+2);
draw_pin(nex, "S2", 'O');
case 2:
nex = ivl_lpm_data(net, nadd4*4+1);
draw_pin(nex, "A1", 'I');
nex = ivl_lpm_datab(net, nadd4*4+1);
draw_pin(nex, "B1", 'I');
nex = ivl_lpm_q(net, nadd4*4+1);
draw_pin(nex, "S1", 'O');
case 1:
nex = ivl_lpm_data(net, nadd4*4+0);
draw_pin(nex, "A0", 'I');
nex = ivl_lpm_datab(net, nadd4*4+0);
draw_pin(nex, "B0", 'I');
nex = ivl_lpm_q(net, nadd4*4+0);
draw_pin(nex, "S0", 'O');
}
fprintf(xnf, "END\n");
}
}
const struct device_s d_generic = { const struct device_s d_generic = {
generic_show_logic, generic_show_logic,
generic_show_dff, generic_show_dff,
generic_show_cmp_eq, generic_show_cmp_eq,
generic_show_cmp_eq, generic_show_cmp_eq,
generic_show_mux generic_show_mux,
generic_show_add
}; };
/* /*
* $Log: d-generic.c,v $ * $Log: d-generic.c,v $
* Revision 1.7 2001/09/01 04:30:44 steve
* Generic ADD code.
*
* Revision 1.6 2001/09/01 02:28:42 steve * Revision 1.6 2001/09/01 02:28:42 steve
* Generate code for MUX devices. * Generate code for MUX devices.
* *

7
tgt-fpga/device.h
View File

@ -18,7 +18,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#ident "$Id: device.h,v 1.4 2001/09/01 02:28:42 steve Exp $" #ident "$Id: device.h,v 1.5 2001/09/01 04:30:44 steve Exp $"
# include <ivl_target.h> # include <ivl_target.h>
@ -45,11 +45,16 @@ struct device_s {
void (*show_cmp_ne)(ivl_lpm_t net); void (*show_cmp_ne)(ivl_lpm_t net);
/* This method draws MUX devices */ /* This method draws MUX devices */
void (*show_mux)(ivl_lpm_t net); void (*show_mux)(ivl_lpm_t net);
/* This method draws ADD devices */
void (*show_add)(ivl_lpm_t net);
}; };
/* /*
* $Log: device.h,v $ * $Log: device.h,v $
* Revision 1.5 2001/09/01 04:30:44 steve
* Generic ADD code.
*
* Revision 1.4 2001/09/01 02:28:42 steve * Revision 1.4 2001/09/01 02:28:42 steve
* Generate code for MUX devices. * Generate code for MUX devices.
* *

9
tgt-fpga/gates.c
View File

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#ident "$Id: gates.c,v 1.4 2001/09/01 02:28:42 steve Exp $" #ident "$Id: gates.c,v 1.5 2001/09/01 04:30:44 steve Exp $"
# include <ivl_target.h> # include <ivl_target.h>
# include "fpga_priv.h" # include "fpga_priv.h"
@ -50,6 +50,10 @@ static void show_gate_lpm(ivl_lpm_t net)
{ {
switch (ivl_lpm_type(net)) { switch (ivl_lpm_type(net)) {
case IVL_LPM_ADD:
device->show_add(net);
break;
case IVL_LPM_CMP_EQ: case IVL_LPM_CMP_EQ:
device->show_cmp_eq(net); device->show_cmp_eq(net);
break; break;
@ -88,6 +92,9 @@ int show_scope_gates(ivl_scope_t net, void*x)
/* /*
* $Log: gates.c,v $ * $Log: gates.c,v $
* Revision 1.5 2001/09/01 04:30:44 steve
* Generic ADD code.
*
* Revision 1.4 2001/09/01 02:28:42 steve * Revision 1.4 2001/09/01 02:28:42 steve
* Generate code for MUX devices. * Generate code for MUX devices.
* *