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-rw-r--r--src/devices/bus/sega8/ccatch.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/src/devices/bus/sega8/ccatch.c b/src/devices/bus/sega8/ccatch.c
new file mode 100644
index 00000000000..ec42d1304b4
--- /dev/null
+++ b/src/devices/bus/sega8/ccatch.c
@@ -0,0 +1,63 @@
+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/***********************************************************************************************************
+
+ SG-1000 Card Catcher emulation
+
+ Sega Card Catcher is a passthrough adapter for
+ SG-1000 to load games in MyCard format into the
+ main cartslot
+
+ ***********************************************************************************************************/
+
+
+#include "emu.h"
+#include "ccatch.h"
+
+
+//-------------------------------------------------
+// constructors
+//-------------------------------------------------
+
+const device_type SEGA8_ROM_CARDCATCH = &device_creator<sega8_cardcatch_device>;
+
+
+
+sega8_cardcatch_device::sega8_cardcatch_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : sega8_rom_device(mconfig, SEGA8_ROM_CARDCATCH, "SG-1000 Card Catcher Cart", tag, owner, clock, "sega8_ccatch", __FILE__),
+ m_card(*this, "cardslot")
+{
+}
+
+
+/*-------------------------------------------------
+ mapper specific handlers
+ -------------------------------------------------*/
+
+READ8_MEMBER(sega8_cardcatch_device::read_cart)
+{
+ if (offset < 0x8000)
+ return m_card->read_cart(space, offset);
+
+ return 0xff;
+}
+
+WRITE8_MEMBER(sega8_cardcatch_device::write_cart)
+{
+ // this should never happen, because there is no RAM on cards
+ if (offset < 0x8000)
+ logerror("Attempt to write to MyCard\n");
+}
+
+static SLOT_INTERFACE_START(sg1000_card)
+ SLOT_INTERFACE_INTERNAL("rom", SEGA8_ROM_STD)
+SLOT_INTERFACE_END
+
+static MACHINE_CONFIG_FRAGMENT( sub_slot )
+ MCFG_SG1000_CARD_ADD("cardslot", sg1000_card, NULL)
+MACHINE_CONFIG_END
+
+machine_config_constructor sega8_cardcatch_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( sub_slot );
+}