diff --git a/bus.cpp b/bus.cpp
index 2513f81..d9a6e56 100644
--- a/bus.cpp
+++ b/bus.cpp
@@ -47,17 +47,45 @@ json_t *bus::serialize()
 {
 	json_t *j_out = json_object();
 
-	json_object_set(j_out, "memory", m->serialize());
+	if (m)
+		json_object_set(j_out, "memory", m->serialize());
+
+	if (kw11_l_)
+		json_object_set(j_out, "kw11-l", kw11_l_->serialize());
+
+	if (tty_)
+		json_object_set(j_out, "tty", tty_->serialize());
+
+	// TODO: mmu, cpu, rl02, rk05, tm11
 
 	return j_out;
 }
 
-bus *bus::deserialize(const json_t *const j)
+bus *bus::deserialize(const json_t *const j, console *const cnsl)
 {
 	bus *b = new bus();
 
-	memory *m = memory::deserialize(json_object_get(j, "memory"));
-	b->add_ram(m);
+	json_t *temp = nullptr;
+
+	temp = json_object_get(j, "memory");
+	if (temp) {
+		memory *m = memory::deserialize(temp);
+		b->add_ram(m);
+	}
+
+	temp = json_object_get(j, "kw11-l");
+	if (temp) {
+		kw11_l *kw11_l_ = kw11_l::deserialize(temp, b, cnsl);
+		b->add_KW11_L(kw11_l_);
+	}
+
+	temp = json_object_get(j, "tty");
+	if (temp) {
+		tty *tty_ = tty::deserialize(temp, b, cnsl);
+		b->add_tty(tty_);
+	}
+
+	// TODO: mmu, cpu, rl02, rk05, tm11
 
 	return b;
 }
@@ -91,6 +119,14 @@ void bus::reset()
 		rl02_->reset();
 	if (tty_)
 		tty_->reset();
+	if (kw11_l_)
+		kw11_l_->reset();
+}
+
+void bus::add_KW11_L(kw11_l *const kw11_l_)
+{
+	delete this->kw11_l_;
+	this->kw11_l_ = kw11_l_;
 }
 
 void bus::add_ram(memory *const m)
diff --git a/bus.h b/bus.h
index 8001c4e..af1ed6b 100644
--- a/bus.h
+++ b/bus.h
@@ -45,6 +45,7 @@
 #define ADDR_CCR 0177746
 #define ADDR_SYSTEM_ID 0177764
 
+class console;
 class cpu;
 class kw11_l;
 class memory;
@@ -91,7 +92,7 @@ public:
 
 #if IS_POSIX
 	json_t *serialize();
-	static bus *deserialize(const json_t *const j);
+	static bus *deserialize(const json_t *const j, console *const cnsl);
 #endif
 
 	void reset();
@@ -108,12 +109,13 @@ public:
 
 	void mmudebug(const uint16_t a);
 
-	void add_ram (memory *const m    );
-	void add_cpu (cpu    *const c    );
-	void add_tm11(tm_11  *const tm11 );
-	void add_rk05(rk05   *const rk05_);
-	void add_rl02(rl02   *const rl02_);
-	void add_tty (tty    *const tty_ );
+	void add_ram   (memory *const m      );
+	void add_cpu   (cpu    *const c      );
+	void add_tm11  (tm_11  *const tm11   );
+	void add_rk05  (rk05   *const rk05_  );
+	void add_rl02  (rl02   *const rl02_  );
+	void add_tty   (tty    *const tty_   );
+	void add_KW11_L(kw11_l *const kw11_l_);
 
 	memory *getRAM()    { return m;       }
 	cpu    *getCpu()    { return c;       }
diff --git a/kw11-l.cpp b/kw11-l.cpp
index 449bfb2..350afc3 100644
--- a/kw11-l.cpp
+++ b/kw11-l.cpp
@@ -57,6 +57,11 @@ void kw11_l::begin(console *const cnsl)
 #endif
 }
 
+void kw11_l::reset()
+{
+	lf_csr = 0;
+}
+
 void kw11_l::operator()()
 {
 	set_thread_name("kek:kw-11l");
@@ -154,3 +159,25 @@ uint8_t kw11_l::get_lf_crs()
 
 	return rc;
 }
+
+#if IS_POSIX
+json_t *kw11_l::serialize()
+{
+	json_t *j = json_object();
+
+	json_object_set(j, "CSR", json_integer(lf_csr));
+
+	return j;
+}
+
+kw11_l *kw11_l::deserialize(const json_t *const j, bus *const b, console *const cnsl)
+{
+	uint16_t CSR = json_integer_value(json_object_get(j, "CSR"));
+
+	kw11_l *out  = new kw11_l(b);
+	out->lf_csr  = CSR;
+	out->begin(cnsl);
+
+	return out;
+}
+#endif
diff --git a/kw11-l.h b/kw11-l.h
index 666ac40..32c6bed 100644
--- a/kw11-l.h
+++ b/kw11-l.h
@@ -6,6 +6,7 @@
 
 #include "bus.h"
 #include "console.h"
+#include "gen.h"
 
 
 class kw11_l
@@ -31,6 +32,13 @@ public:
 	kw11_l(bus *const b);
 	virtual ~kw11_l();
 
+	void     reset();
+
+#if IS_POSIX
+	json_t *serialize();
+	static kw11_l *deserialize(const json_t *const j, bus *const b, console *const cnsl);
+#endif
+
 	void     begin(console *const cnsl);
 	void     operator()();
 
diff --git a/tty.cpp b/tty.cpp
index 312cba6..57494a1 100644
--- a/tty.cpp
+++ b/tty.cpp
@@ -1,4 +1,4 @@
-// (C) 2018-2023 by Folkert van Heusden
+// (C) 2018-2024 by Folkert van Heusden
 // Released under MIT license
 
 #include <errno.h>
@@ -193,3 +193,38 @@ void tty::writeWord(const uint16_t addr, uint16_t v)
 	DOLOG(debug, false, "set register %o to %o", addr, v);
 	registers[(addr - PDP11TTY_BASE) / 2] = v;
 }
+
+#if IS_POSIX
+json_t *tty::serialize()
+{
+	json_t *j = json_object();
+
+        json_t *ja_reg = json_array();
+        for(size_t i=0; i<4; i++)
+                json_array_append(ja_reg, json_integer(registers[i]));
+        json_object_set(j, "registers", ja_reg);
+
+        json_t *ja_buf = json_array();
+	for(auto & c: chars)
+                json_array_append(ja_buf, json_integer(c));
+        json_object_set(j, "input-buffer", ja_buf);
+
+	return j;
+}
+
+tty *tty::deserialize(const json_t *const j, bus *const b, console *const cnsl)
+{
+	tty *out  = new tty(cnsl, b);
+
+	json_t *ja_reg = json_object_get(j, "registers");
+	for(size_t i=0; i<4; i++)
+		out->registers[i] = json_integer_value(json_array_get(ja_reg, i));
+
+	json_t *ja_buf   = json_object_get(j, "input-buffer");
+	size_t  buf_size = json_array_size(ja_buf);
+	for(size_t i=0; i<buf_size; i++)
+		out->chars.push_back(json_integer_value(json_array_get(ja_buf, i)));
+
+	return out;
+}
+#endif
diff --git a/tty.h b/tty.h
index b14c96e..6702889 100644
--- a/tty.h
+++ b/tty.h
@@ -1,4 +1,4 @@
-// (C) 2018-2023 by Folkert van Heusden
+// (C) 2018-2024 by Folkert van Heusden
 // Released under MIT license
 
 #pragma once
@@ -13,6 +13,7 @@
 
 #include "bus.h"
 #include "console.h"
+#include "gen.h"
 
 
 #define PDP11TTY_TKS		0177560	// reader status
@@ -50,6 +51,11 @@ public:
 	tty(console *const c, bus *const b);
 	virtual ~tty();
 
+#if IS_POSIX
+	json_t *serialize();
+	static tty *deserialize(const json_t *const j, bus *const b, console *const cnsl);
+#endif
+
 	void reset();
 
 	uint8_t readByte(const uint16_t addr);