more work on new memory models

c64/basic/engine/end_of_statement_check.s

@@ -16,6 +16,8 @@ end_of_statement_check:
 #if CONFIG_MEMORY_MODEL_60K
 	ldx #<TXTPTR
 	jsr peek_under_roms
+#elif CONFIG_MEMORY_MODEL_46K || CONFIG_MEMORY_MODEL_50K
+	jsr peek_under_roms_via_TXTPTR
 #else // CONFIG_MEMORY_MODEL_38K
 	lda (TXTPTR),y
 #endif