Use carry mux to implement wide identity compare,
Place property item in correct place in LUT cell list.
This commit is contained in:
steve
parent
03b635604a
commit
da9a84ed84
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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-virtex.c,v 1.3 2001/09/10 03:48:34 steve Exp $"
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#ident "$Id: d-virtex.c,v 1.4 2001/09/11 05:52:31 steve Exp $"
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# include "device.h"
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# include "fpga_priv.h"
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@ -103,6 +103,14 @@ static const char*virtex_library_text =
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" (port I1 (direction INPUT))\n"
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" (port I2 (direction INPUT))\n"
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" (port I3 (direction INPUT)))))\n"
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" (cell MUXCY (cellType GENERIC)\n"
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" (view Netlist_representation\n"
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" (viewType NETLIST)\n"
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" (interface\n"
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" (port O (direction OUTPUT))\n"
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" (port S (direction INPUT))\n"
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" (port DI (direction INPUT))\n"
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" (port CI (direction INPUT)))))\n"
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" (cell MUXCY_L (cellType GENERIC)\n"
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" (view Netlist_representation\n"
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" (viewType NETLIST)\n"
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@ -136,12 +144,12 @@ static void edif_show_lut2(const char*name, unsigned uref,
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const char*truth_table)
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{
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char jbuf[1024];
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fprintf(xnf, "(instance (rename U%u \"%s\")"
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" (property INIT (string \"%s\"))",
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uref, name, truth_table);
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fprintf(xnf, " (viewRef Netlist_representation"
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" (cellRef LUT2 (libraryRef VIRTEX))))\n");
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fprintf(xnf, "(instance (rename U%u \"%s\")"
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" (viewRef Netlist_representation"
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" (cellRef LUT2 (libraryRef VIRTEX)))"
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" (property INIT (string \"%s\")))\n",
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uref, name, truth_table);
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sprintf(jbuf, "(portRef O (instanceRef U%u))", edif_uref);
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edif_set_nexus_joint(O, jbuf);
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@ -161,12 +169,12 @@ static void edif_show_lut3(const char*name, unsigned uref,
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const char*truth_table)
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{
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char jbuf[1024];
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fprintf(xnf, "(instance (rename U%u \"%s\")"
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" (property INIT (string \"%s\"))",
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uref, name, truth_table);
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fprintf(xnf, " (viewRef Netlist_representation"
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" (cellRef LUT3 (libraryRef VIRTEX))))\n");
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fprintf(xnf, "(instance (rename U%u \"%s\")"
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" (viewRef Netlist_representation"
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" (cellRef LUT3 (libraryRef VIRTEX)))"
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" (property INIT (string \"%s\")))\n",
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uref, name, truth_table);
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sprintf(jbuf, "(portRef O (instanceRef U%u))", edif_uref);
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edif_set_nexus_joint(O, jbuf);
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@ -188,12 +196,12 @@ static void edif_show_lut4(const char*name, unsigned uref,
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const char*truth_table)
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{
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char jbuf[1024];
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fprintf(xnf, "(instance (rename U%u \"%s\")"
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" (property INIT (string \"%s\"))",
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uref, name, truth_table);
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fprintf(xnf, " (viewRef Netlist_representation"
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" (cellRef LUT4 (libraryRef VIRTEX))))\n");
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fprintf(xnf, "(instance (rename U%u \"%s\")"
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" (viewRef Netlist_representation"
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" (cellRef LUT4 (libraryRef VIRTEX)))"
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" (property INIT (string \"%s\")))\n",
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uref, name, truth_table);
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sprintf(jbuf, "(portRef O (instanceRef U%u))", edif_uref);
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edif_set_nexus_joint(O, jbuf);
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@ -362,71 +370,206 @@ static void edif_show_virtex_eq(ivl_lpm_t net)
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"9009");
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break;
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case 4: {
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default: {
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char jbuf[1024];
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unsigned idx;
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unsigned pairs = ivl_lpm_width(net) / 2;
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unsigned tail = ivl_lpm_width(net) % 2;
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fprintf(xnf, "(instance (rename U%u \"%s\")"
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" (property INIT (string \"8\"))",
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edif_uref, ivl_lpm_name(net));
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fprintf(xnf, " (viewRef Netlist_representation"
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" (cellRef LUT2 (libraryRef VIRTEX))))\n");
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if (tail == 0) {
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tail = 2;
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pairs -= 1;
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}
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sprintf(jbuf, "(portRef O (instanceRef U%u))",
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fprintf(xnf, "(instance U%uL0"
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" (viewRef Netlist_representation"
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" (cellRef LUT4 (libraryRef VIRTEX)))"
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" (property INIT (string \"9009\")))\n",
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edif_uref);
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fprintf(xnf, "(instance U%uM0"
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" (viewRef Netlist_representation"
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" (cellRef MUXCY_L (libraryRef VIRTEX))))\n",
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edif_uref);
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fprintf(xnf, "(instance U%uG0"
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" (viewRef Netlist_representation"
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" (cellRef GND (libraryRef VIRTEX))))\n",
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edif_uref);
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fprintf(xnf, "(instance U%uV0"
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" (viewRef Netlist_representation"
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" (cellRef VCC (libraryRef VIRTEX))))\n",
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edif_uref);
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edif_set_nexus_joint(ivl_lpm_q(net, 0), jbuf);
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fprintf(xnf, "(instance U%uA"
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" (property INIT (string \"9009\"))", edif_uref);
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fprintf(xnf, " (viewRef Netlist_representation"
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" (cellRef LUT4 (libraryRef VIRTEX))))\n");
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fprintf(xnf, "(instance U%uB"
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" (property INIT (string \"9009\"))", edif_uref);
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fprintf(xnf, " (viewRef Netlist_representation"
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" (cellRef LUT4 (libraryRef VIRTEX))))\n");
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fprintf(xnf, "(net U%uNA (joined"
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" (portRef O (instanceRef U%uA))"
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" (portRef I0 (instanceRef U%u))))\n",
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fprintf(xnf, "(net U%uVM0 (joined"
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" (portRef P (instanceRef U%uV0))"
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" (portRef CI (instanceRef U%uM0))))\n",
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edif_uref, edif_uref, edif_uref);
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fprintf(xnf, "(net U%uGM0 (joined"
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" (portRef G (instanceRef U%uG0))"
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" (portRef DI (instanceRef U%uM0))))\n",
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edif_uref, edif_uref, edif_uref);
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fprintf(xnf, "(net U%uLM0 (joined"
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" (portRef O (instanceRef U%uL0))"
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" (portRef S (instanceRef U%uM0))))\n",
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edif_uref, edif_uref, edif_uref);
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fprintf(xnf, "(net U%uNB (joined"
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" (portRef O (instanceRef U%uB))"
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" (portRef I1 (instanceRef U%u))))\n",
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edif_uref, edif_uref, edif_uref);
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sprintf(jbuf, "(portRef I0 (instanceRef U%uA))", edif_uref);
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sprintf(jbuf, "(portRef I0 (instanceRef U%uL0))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_data(net, 0), jbuf);
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sprintf(jbuf, "(portRef I1 (instanceRef U%uA))", edif_uref);
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sprintf(jbuf, "(portRef I1 (instanceRef U%uL0))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_datab(net, 0), jbuf);
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sprintf(jbuf, "(portRef I2 (instanceRef U%uA))", edif_uref);
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sprintf(jbuf, "(portRef I2 (instanceRef U%uL0))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_data(net, 1), jbuf);
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sprintf(jbuf, "(portRef I3 (instanceRef U%uA))", edif_uref);
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sprintf(jbuf, "(portRef I3 (instanceRef U%uL0))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_datab(net, 1), jbuf);
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sprintf(jbuf, "(portRef I0 (instanceRef U%uB))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_data(net, 2), jbuf);
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for (idx = 1 ; idx < pairs ; idx += 1) {
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fprintf(xnf, "(instance U%uL%u"
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" (viewRef Netlist_representation"
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" (cellRef LUT4 (libraryRef VIRTEX)))"
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" (property INIT (string \"9009\")))\n",
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edif_uref, idx);
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fprintf(xnf, "(instance U%uM%u"
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" (viewRef Netlist_representation"
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" (cellRef MUXCY_L (libraryRef VIRTEX))))\n",
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edif_uref, idx);
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fprintf(xnf, "(instance U%uG%u"
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" (viewRef Netlist_representation"
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" (cellRef GND (libraryRef VIRTEX))))\n",
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edif_uref, idx);
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sprintf(jbuf, "(portRef I1 (instanceRef U%uB))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_datab(net, 2), jbuf);
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fprintf(xnf, "(net U%uVM%u (joined"
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" (portRef LO (instanceRef U%uM%u))"
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" (portRef CI (instanceRef U%uM%u))))\n",
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edif_uref, idx, edif_uref, idx-1,
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edif_uref, idx);
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fprintf(xnf, "(net U%uGM%u (joined"
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" (portRef G (instanceRef U%uG%u))"
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" (portRef DI (instanceRef U%uM%u))))\n",
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edif_uref, idx, edif_uref, idx,
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edif_uref, idx);
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fprintf(xnf, "(net U%uLM%u (joined"
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" (portRef O (instanceRef U%uL%u))"
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" (portRef S (instanceRef U%uM%u))))\n",
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edif_uref, idx, edif_uref, idx,
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edif_uref, idx);
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sprintf(jbuf, "(portRef I2 (instanceRef U%uB))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_data(net, 3), jbuf);
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sprintf(jbuf, "(portRef I0 (instanceRef U%uL%u))",
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edif_uref, idx);
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edif_set_nexus_joint(ivl_lpm_data(net, idx*2), jbuf);
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sprintf(jbuf, "(portRef I3 (instanceRef U%uB))", edif_uref);
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edif_set_nexus_joint(ivl_lpm_datab(net, 3), jbuf);
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sprintf(jbuf, "(portRef I1 (instanceRef U%uL%u))",
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edif_uref, idx);
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edif_set_nexus_joint(ivl_lpm_datab(net, idx*2), jbuf);
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sprintf(jbuf, "(portRef I2 (instanceRef U%uL%u))",
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edif_uref, idx);
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edif_set_nexus_joint(ivl_lpm_data(net, idx*2+1), jbuf);
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sprintf(jbuf, "(portRef I3 (instanceRef U%uL%u))",
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edif_uref, idx);
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edif_set_nexus_joint(ivl_lpm_datab(net, idx*2+1), jbuf);
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}
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if (tail == 2) {
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fprintf(xnf, "(instance U%uL%u"
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" (viewRef Netlist_representation"
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" (cellRef LUT4 (libraryRef VIRTEX)))"
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" (property INIT (string \"9009\")))\n",
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edif_uref, pairs);
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fprintf(xnf, "(instance (rename U%uM%u \"%s\")"
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" (viewRef Netlist_representation"
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" (cellRef MUXCY (libraryRef VIRTEX))))\n",
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edif_uref, pairs, ivl_lpm_name(net));
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fprintf(xnf, "(instance U%uG%u"
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" (viewRef Netlist_representation"
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" (cellRef GND (libraryRef VIRTEX))))\n",
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edif_uref, pairs);
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fprintf(xnf, "(net U%uVM%u (joined"
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" (portRef LO (instanceRef U%uM%u))"
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" (portRef CI (instanceRef U%uM%u))))\n",
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edif_uref, pairs, edif_uref, pairs-1,
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edif_uref, pairs);
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fprintf(xnf, "(net U%uGM%u (joined"
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" (portRef G (instanceRef U%uG%u))"
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" (portRef DI (instanceRef U%uM%u))))\n",
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edif_uref, pairs, edif_uref, pairs,
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edif_uref, pairs);
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fprintf(xnf, "(net U%uLM%u (joined"
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" (portRef O (instanceRef U%uL%u))"
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" (portRef S (instanceRef U%uM%u))))\n",
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edif_uref, pairs, edif_uref, pairs,
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edif_uref, pairs);
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sprintf(jbuf, "(portRef I0 (instanceRef U%uL%u))",
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edif_uref, pairs);
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edif_set_nexus_joint(ivl_lpm_data(net, pairs*2), jbuf);
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sprintf(jbuf, "(portRef I1 (instanceRef U%uL%u))",
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edif_uref, pairs);
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edif_set_nexus_joint(ivl_lpm_datab(net, pairs*2), jbuf);
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sprintf(jbuf, "(portRef I2 (instanceRef U%uL%u))",
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edif_uref, pairs);
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edif_set_nexus_joint(ivl_lpm_data(net, pairs*2+1), jbuf);
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sprintf(jbuf, "(portRef I3 (instanceRef U%uL%u))",
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edif_uref, pairs);
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edif_set_nexus_joint(ivl_lpm_datab(net, pairs*2+1), jbuf);
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} else {
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assert(tail == 1);
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fprintf(xnf, "(instance (rename U%uL%u \"%s\")"
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" (viewRef Netlist_representation"
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" (cellRef LUT2 (libraryRef VIRTEX)))"
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" (property INIT (string \"9\")))\n",
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edif_uref, pairs, ivl_lpm_name(net));
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fprintf(xnf, "(instance U%uM%u"
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" (viewRef Netlist_representation"
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" (cellRef MUXCY (libraryRef VIRTEX))))\n",
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edif_uref, pairs);
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fprintf(xnf, "(instance U%uG%u"
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" (viewRef Netlist_representation"
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" (cellRef GND (libraryRef VIRTEX))))\n",
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edif_uref, pairs);
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fprintf(xnf, "(net U%uVM%u (joined"
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" (portRef LO (instanceRef U%uM%u))"
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" (portRef CI (instanceRef U%uM%u))))\n",
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edif_uref, pairs, edif_uref, pairs-1,
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edif_uref, pairs);
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fprintf(xnf, "(net U%uGM%u (joined"
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" (portRef G (instanceRef U%uG%u))"
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" (portRef DI (instanceRef U%uM%u))))\n",
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edif_uref, pairs, edif_uref, pairs,
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edif_uref, pairs);
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fprintf(xnf, "(net U%uLM%u (joined"
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" (portRef O (instanceRef U%uL%u))"
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" (portRef S (instanceRef U%uM%u))))\n",
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edif_uref, pairs, edif_uref, pairs,
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edif_uref, pairs);
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sprintf(jbuf, "(portRef I0 (instanceRef U%uL%u))",
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edif_uref, pairs);
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edif_set_nexus_joint(ivl_lpm_data(net, pairs*2), jbuf);
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sprintf(jbuf, "(portRef I1 (instanceRef U%uL%u))",
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edif_uref, pairs);
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edif_set_nexus_joint(ivl_lpm_datab(net, pairs*2), jbuf);
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}
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sprintf(jbuf, "(portRef O (instanceRef U%uL%u))",
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edif_uref, pairs);
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edif_set_nexus_joint(ivl_lpm_q(net, 0), jbuf);
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break;
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}
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default:
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fprintf(stderr, "internal error: IVL_LPM_CMP_EQ: "
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"Unsupported width (%u)\n", ivl_lpm_width(net));
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assert(0);
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}
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}
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@ -605,6 +748,10 @@ const struct device_s d_virtex_edif = {
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/*
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* $Log: d-virtex.c,v $
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* Revision 1.4 2001/09/11 05:52:31 steve
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* Use carry mux to implement wide identity compare,
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* Place property item in correct place in LUT cell list.
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*
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* Revision 1.3 2001/09/10 03:48:34 steve
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* Add 4 wide identity compare.
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*
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