diff --git a/gowin/arch.cc b/gowin/arch.cc
index dc40b179..2c1e50b7 100644
--- a/gowin/arch.cc
+++ b/gowin/arch.cc
@@ -1009,6 +1009,44 @@ Arch::Arch(ArchArgs args) : args(args)
                 snprintf(buf, 32, "R%dC%d_%s", row + 1, col + 1, portname.c_str(this));
                 addBelInput(belname, id_GSRI, id(buf));
                 break;
+            case ID_OSC:
+                snprintf(buf, 32, "R%dC%d_OSC", row + 1, col + 1);
+                belname = id(buf);
+                addBel(belname, id_OSC, Loc(col, row, 0), false);
+                portname = IdString(pairLookup(bel->ports.get(), bel->num_ports, ID_OSCOUT)->src_id);
+                snprintf(buf, 32, "R%dC%d_%s", row + 1, col + 1, portname.c_str(this));
+                addBelOutput(belname, id_OSCOUT, id(buf));
+                break;
+            case ID_OSCH:
+                snprintf(buf, 32, "R%dC%d_OSCH", row + 1, col + 1);
+                belname = id(buf);
+                addBel(belname, id_OSCH, Loc(col, row, 0), false);
+                portname = IdString(pairLookup(bel->ports.get(), bel->num_ports, ID_OSCOUT)->src_id);
+                snprintf(buf, 32, "R%dC%d_%s", row + 1, col + 1, portname.c_str(this));
+                addBelOutput(belname, id_OSCOUT, id(buf));
+                break;
+            case ID_OSCF:
+                snprintf(buf, 32, "R%dC%d_OSCF", row + 1, col + 1);
+                belname = id(buf);
+                addBel(belname, id_OSCF, Loc(col, row, 0), false);
+                portname = IdString(pairLookup(bel->ports.get(), bel->num_ports, ID_OSCOUT)->src_id);
+                snprintf(buf, 32, "R%dC%d_%s", row + 1, col + 1, portname.c_str(this));
+                addBelOutput(belname, id_OSCOUT, id(buf));
+                portname = IdString(pairLookup(bel->ports.get(), bel->num_ports, ID_OSCEN)->src_id);
+                snprintf(buf, 32, "R%dC%d_%s", row + 1, col + 1, portname.c_str(this));
+                addBelInput(belname, id_OSCEN, id(buf));
+                break;
+            case ID_OSCZ:
+                snprintf(buf, 32, "R%dC%d_OSCZ", row + 1, col + 1);
+                belname = id(buf);
+                addBel(belname, id_OSCZ, Loc(col, row, 0), false);
+                portname = IdString(pairLookup(bel->ports.get(), bel->num_ports, ID_OSCOUT)->src_id);
+                snprintf(buf, 32, "R%dC%d_%s", row + 1, col + 1, portname.c_str(this));
+                addBelOutput(belname, id_OSCOUT, id(buf));
+                portname = IdString(pairLookup(bel->ports.get(), bel->num_ports, ID_OSCEN)->src_id);
+                snprintf(buf, 32, "R%dC%d_%s", row + 1, col + 1, portname.c_str(this));
+                addBelInput(belname, id_OSCEN, id(buf));
+                break;
             // fall through the ++
             case ID_LUT7:
                 z++;
diff --git a/gowin/constids.inc b/gowin/constids.inc
index 8159cc10..d2a6b171 100644
--- a/gowin/constids.inc
+++ b/gowin/constids.inc
@@ -758,6 +758,12 @@ X(GSR)
 X(GSR0)
 X(GSRI)
 
+// Oscillators
+X(OSC)
+X(OSCZ)
+X(OSCH)
+X(OSCF)
+
 // primitive attributes
 X(INIT)
 X(FF_USED)
@@ -791,6 +797,8 @@ X(COUT)
 X(OF)
 X(V)
 X(G)
+X(OSCOUT)
+X(OSCEN)
 
 // timing
 X(X0)