diff --git a/src/devices/cpu/sm510/sm500op.cpp b/src/devices/cpu/sm510/sm500op.cpp
index 39af8e6020b..13449506650 100644
--- a/src/devices/cpu/sm510/sm500op.cpp
+++ b/src/devices/cpu/sm510/sm500op.cpp
@@ -1,5 +1,6 @@
 // license:BSD-3-Clause
-// copyright-holders:hap, Igor
+// copyright-holders:hap
+// thanks-to:Igor
 
 // SM500 shared opcode handlers
 
diff --git a/src/devices/cpu/sm510/sm5a.cpp b/src/devices/cpu/sm510/sm5a.cpp
index 7510cd17655..594c23ca836 100644
--- a/src/devices/cpu/sm510/sm5a.cpp
+++ b/src/devices/cpu/sm510/sm5a.cpp
@@ -1,5 +1,6 @@
 // license:BSD-3-Clause
-// copyright-holders:hap, Igor
+// copyright-holders:hap
+// thanks-to:Igor
 /*
 
   Sharp SM5A MCU core implementation
@@ -17,7 +18,6 @@
 // MCU types
 DEFINE_DEVICE_TYPE(SM5A, sm5a_device, "sm5a", "Sharp SM5A") // 1.8K ROM, 5x13x4 RAM, shift registers for LCD
 DEFINE_DEVICE_TYPE(SM5L, sm5l_device, "sm5l", "Sharp SM5L") // low-power version of SM5A
-DEFINE_DEVICE_TYPE(KB1013VK12, kb1013vk12_device, "kb1013vk1_2", "KB1013VK1-2") // Soviet-era clone of SM5A
 
 
 // internal memory maps
@@ -51,10 +51,6 @@ sm5l_device::sm5l_device(const machine_config &mconfig, const char *tag, device_
 	sm5a_device(mconfig, SM5L, tag, owner, clock, 1, 9, 11, address_map_constructor(FUNC(sm5l_device::program_1_8k), this), 7, address_map_constructor(FUNC(sm5l_device::data_5x13x4), this))
 { }
 
-kb1013vk12_device::kb1013vk12_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) :
-	sm5a_device(mconfig, KB1013VK12, tag, owner, clock, 1, 9, 11, address_map_constructor(FUNC(kb1013vk12_device::program_1_8k), this), 7, address_map_constructor(FUNC(kb1013vk12_device::data_5x13x4), this))
-{ }
-
 
 // disasm
 std::unique_ptr<util::disasm_interface> sm5a_device::create_disassembler()
diff --git a/src/devices/cpu/sm510/sm5a.h b/src/devices/cpu/sm510/sm5a.h
index 05d746b9bf3..f4acf8a1788 100644
--- a/src/devices/cpu/sm510/sm5a.h
+++ b/src/devices/cpu/sm510/sm5a.h
@@ -83,15 +83,8 @@ public:
 	sm5l_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 32768);
 };
 
-class kb1013vk12_device : public sm5a_device
-{
-public:
-	kb1013vk12_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 32768);
-};
-
 
 DECLARE_DEVICE_TYPE(SM5A, sm5a_device)
 DECLARE_DEVICE_TYPE(SM5L, sm5l_device)
-DECLARE_DEVICE_TYPE(KB1013VK12, kb1013vk12_device)
 
 #endif // MAME_CPU_SM510_SM5A_H
diff --git a/src/mame/handheld/hh_sm510.cpp b/src/mame/handheld/hh_sm510.cpp
index f856e7810d3..e5f256f989f 100644
--- a/src/mame/handheld/hh_sm510.cpp
+++ b/src/mame/handheld/hh_sm510.cpp
@@ -380,14 +380,6 @@ void hh_sm510_state::mcfg_cpu_sm5a(machine_config &config)
 	m_maincpu->write_segs().set(FUNC(hh_sm510_state::sm500_lcd_segment_w));
 }
 
-void hh_sm510_state::mcfg_cpu_kb1013vk12(machine_config &config)
-{
-	KB1013VK12(config, m_maincpu);
-	mcfg_cpu_common(config);
-	m_maincpu->set_r_mask_option(sm510_base_device::RMASK_DIRECT);
-	m_maincpu->write_segs().set(FUNC(hh_sm510_state::sm500_lcd_segment_w));
-}
-
 void hh_sm510_state::mcfg_cpu_sm510(machine_config &config)
 {
 	SM510(config, m_maincpu);
@@ -423,6 +415,9 @@ void hh_sm510_state::mcfg_cpu_sm530(machine_config &config)
 
 void hh_sm510_state::mcfg_svg_screen(machine_config &config, u16 width, u16 height, const char *tag)
 {
+	if (width == 0 || height == 0)
+		return;
+
 	screen_device &screen(SCREEN(config, tag, SCREEN_TYPE_SVG));
 	screen.set_refresh_hz(60);
 	screen.set_size(width, height);
@@ -451,14 +446,6 @@ void hh_sm510_state::sm5a_common(machine_config &config, u16 width, u16 height)
 	mcfg_svg_screen(config, width, height);
 }
 
-void hh_sm510_state::kb1013vk12_common(machine_config &config, u16 width, u16 height)
-{
-	mcfg_cpu_kb1013vk12(config);
-	mcfg_sound_r1(config);
-	m_maincpu->write_r().set(FUNC(hh_sm510_state::piezo_input_w));
-	mcfg_svg_screen(config, width, height);
-}
-
 void hh_sm510_state::sm510_common(machine_config &config, u16 width, u16 height)
 {
 	mcfg_cpu_sm510(config);
@@ -1286,7 +1273,7 @@ void gnw_octopus_state::gnw_octopus(machine_config &config)
 
 void gnw_octopus_state::taynyoke(machine_config &config)
 {
-	kb1013vk12_common(config, 1647, 1080); // R mask option confirmed
+	sm5a_common(config, 1647, 1080); // КБ1013ВК1-2, R mask option confirmed
 }
 
 // roms
@@ -1443,7 +1430,7 @@ void gnw_chef_state::gnw_chef(machine_config &config)
 
 void gnw_chef_state::vespovar(machine_config & config)
 {
-	kb1013vk12_common(config, 1679, 1080); // R mask option confirmed
+	sm5a_common(config, 1679, 1080); // КБ1013ВК1-2, R mask option confirmed
 }
 
 // roms
@@ -1621,7 +1608,7 @@ void gnw_fire_state::gnw_fire(machine_config &config)
 
 void gnw_fire_state::kosmicmt(machine_config & config)
 {
-	kb1013vk12_common(config, 1673, 1080); // R mask option confirmed
+	sm5a_common(config, 1673, 1080); // КБ1013ВК1-2, R mask option confirmed
 }
 
 // roms
@@ -4620,67 +4607,67 @@ INPUT_PORTS_END
 
 void nupogodi_state::nupogodi(machine_config &config)
 {
-	kb1013vk12_common(config, 1715, 1080); // R mask option ?
+	sm5a_common(config, 1715, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::ehockey(machine_config &config)
 {
-	kb1013vk12_common(config, 1782, 1080); // R mask option ?
+	sm5a_common(config, 1782, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::rkosmosa(machine_config &config)
 {
-	kb1013vk12_common(config, 1646, 1080); // R mask option ?
+	sm5a_common(config, 1646, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::okhota(machine_config &config)
 {
-	kb1013vk12_common(config, 1632, 1080); // R mask option ?
+	sm5a_common(config, 1632, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::biathlon(machine_config &config)
 {
-	kb1013vk12_common(config, 1633, 1080); // R mask option ?
+	sm5a_common(config, 1633, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::vfutbol(machine_config &config)
 {
-	kb1013vk12_common(config, 1655, 1080); // R mask option ?
+	sm5a_common(config, 1655, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::krybolov(machine_config &config)
 {
-	kb1013vk12_common(config, 1638, 1080); // R mask option ?
+	sm5a_common(config, 1638, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::kvakazad(machine_config &config)
 {
-	kb1013vk12_common(config, 1660, 1080); // R mask option ?
+	sm5a_common(config, 1660, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::nochnyev(machine_config &config)
 {
-	kb1013vk12_common(config, 1641, 1080); // R mask option ?
+	sm5a_common(config, 1641, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::kosmicpt(machine_config &config)
 {
-	kb1013vk12_common(config, 1658, 1080); // R mask option ?
+	sm5a_common(config, 1658, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::morataka(machine_config &config)
 {
-	kb1013vk12_common(config, 1648, 1080); // R mask option ?
+	sm5a_common(config, 1648, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::atakaast(machine_config &config)
 {
-	kb1013vk12_common(config, 1620, 1080); // R mask option ?
+	sm5a_common(config, 1620, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 void nupogodi_state::ecircus(machine_config &config)
 {
-	kb1013vk12_common(config, 1657, 1080); // R mask option ?
+	sm5a_common(config, 1657, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 // roms
@@ -4848,7 +4835,7 @@ INPUT_PORTS_END
 
 void auslalom_state::auslalom(machine_config &config)
 {
-	kb1013vk12_common(config, 1732, 1080); // R mask option ?
+	sm5a_common(config, 1732, 1080); // КБ1013ВК1-2, R mask option ?
 }
 
 // roms
diff --git a/src/mame/handheld/hh_sm510.h b/src/mame/handheld/hh_sm510.h
index 6ff0f603977..9dafa81dee4 100644
--- a/src/mame/handheld/hh_sm510.h
+++ b/src/mame/handheld/hh_sm510.h
@@ -87,7 +87,6 @@ protected:
 	// machine configs
 	void mcfg_cpu_common(machine_config &config);
 	void mcfg_cpu_sm5a(machine_config &config);
-	void mcfg_cpu_kb1013vk12(machine_config &config);
 	void mcfg_cpu_sm510(machine_config &config);
 	void mcfg_cpu_sm511(machine_config &config);
 	void mcfg_cpu_sm512(machine_config &config);
@@ -96,7 +95,6 @@ protected:
 	void mcfg_sound_r1(machine_config &config);
 
 	void sm5a_common(machine_config &config, u16 width, u16 height);
-	void kb1013vk12_common(machine_config &config, u16 width, u16 height);
 	void sm510_common(machine_config &config, u16 width, u16 height);
 	void sm511_common(machine_config &config, u16 width, u16 height);
 	//void sm512_common(machine_config &config, u16 width, u16 height);