diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua
index acca179f..7565a354 100644
--- a/scripts/src/bus.lua
+++ b/scripts/src/bus.lua
@@ -25,6 +25,8 @@ if (BUSES["A7800"]~=null) then
 		MAME_DIR .. "src/devices/bus/a7800/hiscore.h",
 		MAME_DIR .. "src/devices/bus/a7800/xm.cpp",
 		MAME_DIR .. "src/devices/bus/a7800/xm.h",
+		MAME_DIR .. "src/devices/bus/a7800/bankset.cpp",
+		MAME_DIR .. "src/devices/bus/a7800/bankset.h",
 		MAME_DIR .. "src/devices/bus/a7800/cpuwiz.cpp",
 		MAME_DIR .. "src/devices/bus/a7800/cpuwiz.h",
 	}
diff --git a/src/devices/bus/a7800/a78_carts.h b/src/devices/bus/a7800/a78_carts.h
index 4db67bf4..6494f22f 100644
--- a/src/devices/bus/a7800/a78_carts.h
+++ b/src/devices/bus/a7800/a78_carts.h
@@ -9,6 +9,7 @@
 #include "xm.h"
 #include "hiscore.h"
 #include "cpuwiz.h"
+#include "bankset.h"
 
 static SLOT_INTERFACE_START(a7800_cart)
 	SLOT_INTERFACE_INTERNAL("a78_rom",      A78_ROM)
@@ -22,6 +23,8 @@ static SLOT_INTERFACE_START(a7800_cart)
 	SLOT_INTERFACE_INTERNAL("a78_act",      A78_ROM_ACTIVISION)
 	SLOT_INTERFACE_INTERNAL("a78_hsc",      A78_HISCORE)
 	SLOT_INTERFACE_INTERNAL("a78_xm",       A78_XM)     // the actual XM expansion (as passthru)
+	SLOT_INTERFACE_INTERNAL("a78_bankset_sg",    A78_ROM_BANKSET_SG)
+	SLOT_INTERFACE_INTERNAL("a78_bankset_sg_bankram",    A78_ROM_BANKSET_SG_BANKRAM)
 	SLOT_INTERFACE_INTERNAL("a78_megacart", A78_ROM_MEGACART)
 	SLOT_INTERFACE_INTERNAL("a78_versa",    A78_ROM_VERSABOARD)
 	// cart variants with a POKEY at 0x0450 (typically a VersaBoard variant, or an homebrew pcb)
diff --git a/src/devices/bus/a7800/a78_slot.cpp b/src/devices/bus/a7800/a78_slot.cpp
index a190b1a7..0733e3b9 100644
--- a/src/devices/bus/a7800/a78_slot.cpp
+++ b/src/devices/bus/a7800/a78_slot.cpp
@@ -261,7 +261,7 @@ int a78_cart_slot_device::validate_header(int head, bool log) const
 		head &= 0xff00;
 	}
 
-	if ((head & 0xff00) > 0x300)
+	if ((head & 0xff00) > 0x2000)
 	{
 		if (log)
 		{
@@ -301,6 +301,8 @@ static const a78_slot slot_list[] =
 	{ A78_ACTIVISION, "a78_act" },
 	{ A78_HSC,        "a78_hsc" },
 	{ A78_XM_BOARD,   "a78_xm" },
+	{ A78_BANKSET_SG,   "a78_bankset_sg" },
+	{ A78_BANKSET_SG_BANKRAM,   "a78_bankset_sg_bankram" },
 	{ A78_MEGACART,   "a78_megacart" },
 	{ A78_VERSABOARD, "a78_versa" },
 	{ A78_TYPE0_POK450, "a78_p450_t0" },
@@ -381,7 +383,7 @@ image_init_result a78_cart_slot_device::call_load()
 			// let's try to auto-fix some common errors in the header
 			mapper = validate_header((head[53] << 8) | head[54], true);
 
-			switch (mapper & 0x2e)
+			switch (mapper & 0x202e)
 			{
 				case 0x0000:
 					m_type = BIT(mapper, 0) ? A78_TYPE1 : A78_TYPE0;
@@ -402,6 +404,12 @@ image_init_result a78_cart_slot_device::call_load()
 					else
 						m_type = A78_VERSABOARD;
 					break;
+				case 0x2002:
+					m_type = A78_BANKSET_SG;
+					break;
+				case 0x2022:
+					m_type = A78_BANKSET_SG_BANKRAM;
+					break;
 			}
 
 			// check if cart has a POKEY at $0450 (typically a VersaBoard variant)
@@ -450,7 +458,7 @@ image_init_result a78_cart_slot_device::call_load()
 
 			if (m_type == A78_TYPE6 || m_type == A78_TYPE8)
 				m_cart->ram_alloc(0x4000);
-			if (m_type == A78_MEGACART || (m_type >= A78_VERSABOARD && m_type <= A78_VERSA_POK450))
+			if (m_type == A78_MEGACART || (m_type == A78_BANKSET_SG_BANKRAM) || (m_type >= A78_VERSABOARD && m_type <= A78_VERSA_POK450))
 				m_cart->ram_alloc(0x8000);
 			if (m_type == A78_XM_BOARD)
 				m_cart->ram_alloc(0x20000);
@@ -517,7 +525,7 @@ std::string a78_cart_slot_device::get_default_card_software(get_default_card_sof
 		// let's try to auto-fix some common errors in the header
 		mapper = validate_header((head[53] << 8) | head[54], false);
 
-		switch (mapper & 0x2e)
+		switch (mapper & 0x202e)
 		{
 			case 0x0000:
 				type = BIT(mapper, 0) ? A78_TYPE1 : A78_TYPE0;
@@ -538,6 +546,12 @@ std::string a78_cart_slot_device::get_default_card_software(get_default_card_sof
 				else
 					type = A78_VERSABOARD;
 				break;
+			case 0x2002:
+				type = A78_BANKSET_SG;
+				break;
+			case 0x2022:
+				type = A78_BANKSET_SG_BANKRAM;
+				break;
 		}
 
 		// check if cart has a POKEY at $0450 (typically a VersaBoard variant)!
diff --git a/src/devices/bus/a7800/a78_slot.h b/src/devices/bus/a7800/a78_slot.h
index b49fedf7..32646a14 100644
--- a/src/devices/bus/a7800/a78_slot.h
+++ b/src/devices/bus/a7800/a78_slot.h
@@ -28,6 +28,8 @@ enum
 	A78_HSC,            // Atari HighScore cart
 	A78_XB_BOARD,       // A7800 Expansion Board (it shall more or less apply to the Expansion Module too, but this is not officially released yet)
 	A78_XM_BOARD,       // A7800 XM Expansion Module (theoretical specs only, since this is not officially released yet)
+	A78_BANKSET_SG,
+	A78_BANKSET_SG_BANKRAM,
 	A78_MEGACART,               // Homebrew by CPUWIZ, consists of SuperGame bank up to 512K + 32K RAM banked
 	A78_VERSABOARD = 0x10,      // Homebrew by CPUWIZ, consists of SuperGame bank up to 256K + 32K RAM banked
 	// VersaBoard variants configured as Type 1/3/A or VersaBoard + POKEY at $0450