diff --git a/csi.c b/csi.c
index ca3fd945..9f89ccd2 100644
--- a/csi.c
+++ b/csi.c
@@ -740,6 +740,16 @@ csi_dispatch(struct terminal *term, uint8_t final)
                     term->cursor_keys_mode = CURSOR_KEYS_NORMAL;
                     break;
 
+                case 3:
+                    LOG_WARN("unimplemented: 132 column mode (DECCOLM, %s)",
+                             csi_as_string(term, final));
+                    break;
+
+                case 4:
+                    LOG_WARN("unimplemented: Smooth (Slow) Scroll (DECSCLM, %s)",
+                             csi_as_string(term, final));
+                    break;
+
                 case 5:
                     term->reverse = false;
                     term_damage_all(term);
@@ -897,6 +907,20 @@ csi_dispatch(struct terminal *term, uint8_t final)
         break; /* private == ' ' */
     }
 
+    case '!': {
+        switch (final) {
+        case 'p':
+            LOG_WARN("unimplemented: soft reset");
+            break;
+
+        default:
+            LOG_ERR("unimplemented: %s", csi_as_string(term, final));
+            abort();
+            break;
+        }
+        break; /* private == '!' */
+    }
+
     default:
         LOG_ERR("unimplemented: %s", csi_as_string(term, final));
         abort();
diff --git a/vt.c b/vt.c
index 92caea3f..90f6980f 100644
--- a/vt.c
+++ b/vt.c
@@ -598,6 +598,10 @@ esc_dispatch(struct terminal *term, uint8_t final)
         term->vt.attrs = term->vt.saved_attrs;
         break;
 
+    case 'c':
+        LOG_WARN("unimplemented: reset to initial state");
+        break;
+
     case 'B': {
         /* Configure G0-G3 to use ASCII */
         char param = term->vt.private != 0 ? term->vt.private : '(';