Generic ADD code.
This commit is contained in:
steve
parent
16023cbbd6
commit
2996d2eb19
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ident "$Id: d-generic.c,v 1.6 2001/09/01 02:28:42 steve Exp $"
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#ident "$Id: d-generic.c,v 1.7 2001/09/01 04:30:44 steve Exp $"
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# include "device.h"
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# include "fpga_priv.h"
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@ -301,17 +301,125 @@ static void generic_show_mux(ivl_lpm_t net)
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}
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}
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/*
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* This code cheats and just generates ADD4 devices enough to support
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* the add. Make no effort to optimize, because we have no idea what
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* kind of device we have.
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*/
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static void generic_show_add(ivl_lpm_t net)
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{
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char name[1024];
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ivl_nexus_t nex;
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unsigned idx, nadd4, tail;
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mangle_lpm_name(net, name, sizeof name);
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/* Make this many ADD4 devices. */
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nadd4 = ivl_lpm_width(net) / 4;
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tail = ivl_lpm_width(net) % 4;
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for (idx = 0 ; idx < nadd4 ; idx += 1) {
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fprintf(xnf, "SYM, %s/A%u, ADD4\n", name, idx);
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if (idx > 0)
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fprintf(xnf, " PIN, CI, I, %s/CO%u\n", name, idx-1);
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nex = ivl_lpm_q(net, idx*4+0);
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draw_pin(nex, "S0", 'O');
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nex = ivl_lpm_q(net, idx*4+1);
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draw_pin(nex, "S1", 'O');
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nex = ivl_lpm_q(net, idx*4+2);
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draw_pin(nex, "S2", 'O');
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nex = ivl_lpm_q(net, idx*4+3);
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draw_pin(nex, "S3", 'O');
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nex = ivl_lpm_data(net, idx*4+0);
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draw_pin(nex, "A0", 'I');
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nex = ivl_lpm_data(net, idx*4+1);
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draw_pin(nex, "A1", 'I');
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nex = ivl_lpm_data(net, idx*4+2);
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draw_pin(nex, "A2", 'I');
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nex = ivl_lpm_data(net, idx*4+3);
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draw_pin(nex, "A3", 'I');
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nex = ivl_lpm_datab(net, idx*4+0);
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draw_pin(nex, "B0", 'I');
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nex = ivl_lpm_datab(net, idx*4+1);
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draw_pin(nex, "B1", 'I');
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nex = ivl_lpm_datab(net, idx*4+2);
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draw_pin(nex, "B2", 'I');
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nex = ivl_lpm_datab(net, idx*4+3);
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draw_pin(nex, "B3", 'I');
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if ((idx*4+4) < ivl_lpm_width(net))
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fprintf(xnf, " PIN, CO, O, %s/CO%u\n", name, idx);
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fprintf(xnf, "END\n");
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}
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if (tail > 0) {
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fprintf(xnf, "SYM, %s/A%u, ADD4\n", name, nadd4);
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if (nadd4 > 0)
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fprintf(xnf, " PIN, CI, I, %s/CO%u\n", name, nadd4-1);
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switch (tail) {
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case 3:
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nex = ivl_lpm_data(net, nadd4*4+2);
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draw_pin(nex, "A2", 'I');
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nex = ivl_lpm_datab(net, nadd4*4+2);
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draw_pin(nex, "B2", 'I');
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nex = ivl_lpm_q(net, nadd4*4+2);
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draw_pin(nex, "S2", 'O');
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case 2:
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nex = ivl_lpm_data(net, nadd4*4+1);
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draw_pin(nex, "A1", 'I');
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nex = ivl_lpm_datab(net, nadd4*4+1);
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draw_pin(nex, "B1", 'I');
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nex = ivl_lpm_q(net, nadd4*4+1);
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draw_pin(nex, "S1", 'O');
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case 1:
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nex = ivl_lpm_data(net, nadd4*4+0);
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draw_pin(nex, "A0", 'I');
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nex = ivl_lpm_datab(net, nadd4*4+0);
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draw_pin(nex, "B0", 'I');
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nex = ivl_lpm_q(net, nadd4*4+0);
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draw_pin(nex, "S0", 'O');
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}
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fprintf(xnf, "END\n");
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}
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}
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const struct device_s d_generic = {
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generic_show_logic,
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generic_show_dff,
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generic_show_cmp_eq,
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generic_show_cmp_eq,
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generic_show_mux
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generic_show_mux,
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generic_show_add
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};
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/*
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* $Log: d-generic.c,v $
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* Revision 1.7 2001/09/01 04:30:44 steve
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* Generic ADD code.
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*
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* Revision 1.6 2001/09/01 02:28:42 steve
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* Generate code for MUX devices.
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*
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@ -18,7 +18,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ident "$Id: device.h,v 1.4 2001/09/01 02:28:42 steve Exp $"
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#ident "$Id: device.h,v 1.5 2001/09/01 04:30:44 steve Exp $"
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# include <ivl_target.h>
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@ -45,11 +45,16 @@ struct device_s {
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void (*show_cmp_ne)(ivl_lpm_t net);
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/* This method draws MUX devices */
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void (*show_mux)(ivl_lpm_t net);
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/* This method draws ADD devices */
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void (*show_add)(ivl_lpm_t net);
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};
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/*
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* $Log: device.h,v $
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* Revision 1.5 2001/09/01 04:30:44 steve
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* Generic ADD code.
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*
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* Revision 1.4 2001/09/01 02:28:42 steve
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* Generate code for MUX devices.
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*
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ident "$Id: gates.c,v 1.4 2001/09/01 02:28:42 steve Exp $"
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#ident "$Id: gates.c,v 1.5 2001/09/01 04:30:44 steve Exp $"
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# include <ivl_target.h>
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# include "fpga_priv.h"
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@ -50,6 +50,10 @@ static void show_gate_lpm(ivl_lpm_t net)
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{
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switch (ivl_lpm_type(net)) {
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case IVL_LPM_ADD:
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device->show_add(net);
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break;
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case IVL_LPM_CMP_EQ:
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device->show_cmp_eq(net);
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break;
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@ -88,6 +92,9 @@ int show_scope_gates(ivl_scope_t net, void*x)
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/*
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* $Log: gates.c,v $
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* Revision 1.5 2001/09/01 04:30:44 steve
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* Generic ADD code.
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*
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* Revision 1.4 2001/09/01 02:28:42 steve
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* Generate code for MUX devices.
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*
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