diff --git a/src/debugger.c b/src/debugger.c
index f8dbfac..14c3b24 100644
--- a/src/debugger.c
+++ b/src/debugger.c
@@ -325,3 +325,12 @@ void dbg_onsleep(void) {
 	if (dbg_impl)
 		dbg_impl->onsleep();
 }
+
+boolean dbg_console_vprintf(const char *format, va_list ap) {
+	if (!dbg_impl || !dbg_impl->console_output)
+		return false;
+	char buf[1024];
+	vsnprintf(buf, sizeof(buf), format, ap);
+	dbg_impl->console_output(buf);
+	return true;
+}
diff --git a/src/debugger.h b/src/debugger.h
index 4045cad..8cc3bb2 100644
--- a/src/debugger.h
+++ b/src/debugger.h
@@ -20,6 +20,7 @@
 #ifndef __DEBUGGER_H__
 #define __DEBUGGER_H__
 
+#include <stdarg.h>
 #include "portab.h"
 
 typedef enum {
@@ -44,6 +45,7 @@ void dbg_quit();
 void dbg_main(void);
 void dbg_onsleep(void);
 BYTE dbg_handle_breakpoint(int page, int addr);
+boolean dbg_console_vprintf(const char *format, va_list ap);
 
 #else // ENABLE_DEBUGGER
 
@@ -53,6 +55,7 @@ BYTE dbg_handle_breakpoint(int page, int addr);
 #define dbg_main()
 #define dbg_onsleep()
 #define dbg_handle_breakpoint(page, addr) BREAKPOINT
+#define dbg_console_vprintf(format, ap) false
 
 #endif // ENABLE_DEBUGGER
 
diff --git a/src/debugger_dap.c b/src/debugger_dap.c
index 60eab0c..1f5a6b3 100644
--- a/src/debugger_dap.c
+++ b/src/debugger_dap.c
@@ -68,21 +68,21 @@ static void send_json(cJSON *json) {
 	cJSON_free(json);
 }
 
-static void emit_initialized_event() {
+static void emit_initialized_event(void) {
 	cJSON *event = cJSON_CreateObject();
 	cJSON_AddStringToObject(event, "type", "event");
 	cJSON_AddStringToObject(event, "event", "initialized");
 	send_json(event);
 }
 
-static void emit_terminated_event() {
+static void emit_terminated_event(void) {
 	cJSON *event = cJSON_CreateObject();
 	cJSON_AddStringToObject(event, "type", "event");
 	cJSON_AddStringToObject(event, "event", "terminated");
 	send_json(event);
 }
 
-static void emit_stop_event() {
+static void emit_stop_event(void) {
 	const char *reason;
 	switch (dbg_state) {
 	case DBG_STOPPED_ENTRY: reason = "entry"; break;
@@ -102,6 +102,15 @@ static void emit_stop_event() {
 	send_json(event);
 }
 
+static void emit_output_event(const char *output) {
+	cJSON *event = cJSON_CreateObject(), *body;
+	cJSON_AddStringToObject(event, "type", "event");
+	cJSON_AddStringToObject(event, "event", "output");
+	cJSON_AddItemToObjectCS(event, "body", body = cJSON_CreateObject());
+	cJSON_AddStringToObject(body, "output", output);
+	send_json(event);
+}
+
 static void cmd_initialize(cJSON *args, cJSON *resp) {
 	cJSON *body;
 	cJSON_AddBoolToObject(resp, "success", true);
@@ -598,4 +607,5 @@ DebuggerImpl dbg_dap_impl = {
 	.quit = dbg_dap_quit,
 	.repl = dbg_dap_repl,
 	.onsleep = dbg_dap_onsleep,
+	.console_output = emit_output_event,
 };
diff --git a/src/debugger_private.h b/src/debugger_private.h
index c10c90c..3afddc7 100644
--- a/src/debugger_private.h
+++ b/src/debugger_private.h
@@ -52,6 +52,7 @@ typedef struct {
 	void (*quit)(void);
 	void (*repl)(void);
 	void (*onsleep)(void);
+	void (*console_output)(const char *output);
 } DebuggerImpl;
 
 extern DebuggerImpl dbg_cui_impl;
diff --git a/src/xsystem35.c b/src/xsystem35.c
index ba40994..f313748 100644
--- a/src/xsystem35.c
+++ b/src/xsystem35.c
@@ -176,7 +176,8 @@ void sys_message(int lv, char *format, ...) {
 	int prio = prio_table[min(lv, 5)];
 	__android_log_vprint(prio, "xsystem35", format, args);
 #else
-	vfprintf(stderr, format, args);
+	if (!dbg_console_vprintf(format, args))
+		vfprintf(stderr, format, args);
 #endif
 	va_end(args);
 }