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Diffstat (limited to 'src/devices/bus/nes/mmc1_clones.cpp')
-rw-r--r--src/devices/bus/nes/mmc1_clones.cpp55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/devices/bus/nes/mmc1_clones.cpp b/src/devices/bus/nes/mmc1_clones.cpp
index 9f37d3cac74..2694384d2de 100644
--- a/src/devices/bus/nes/mmc1_clones.cpp
+++ b/src/devices/bus/nes/mmc1_clones.cpp
@@ -28,6 +28,7 @@
// constructor
//-------------------------------------------------
+DEFINE_DEVICE_TYPE(NES_BMC_JY012005, nes_bmc_jy012005_device, "nes_bmc_jy012005", "NES Cart BMC JY012005 PCB")
DEFINE_DEVICE_TYPE(NES_BMC_JY820845C, nes_bmc_jy820845c_device, "nes_bmc_jy820845c", "NES Cart BMC JY820845C PCB")
DEFINE_DEVICE_TYPE(NES_FARID_SLROM, nes_farid_slrom_device, "nes_farid_slrom", "NES Cart Farid SLROM 8 in 1 PCB")
DEFINE_DEVICE_TYPE(NES_NINJARYU, nes_ninjaryu_device, "nes_ninjaryu", "NES Cart Ninja Ryukenden Chinese PCB")
@@ -36,6 +37,11 @@ DEFINE_DEVICE_TYPE(NES_SRPG_5IN1, nes_srpg5in1_device, "nes_srpg5in1",
DEFINE_DEVICE_TYPE(NES_TXC_22110, nes_txc_22110_device, "nes_txc_22110", "NES Cart TXC 01-22110-000 PCB")
+nes_bmc_jy012005_device::nes_bmc_jy012005_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : nes_sxrom_device(mconfig, NES_BMC_JY012005, tag, owner, clock), m_latch0(0)
+{
+}
+
nes_bmc_jy820845c_device::nes_bmc_jy820845c_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: nes_sxrom_device(mconfig, NES_BMC_JY820845C, tag, owner, clock), m_latch0(0), m_mode(0)
{
@@ -68,6 +74,18 @@ nes_txc_22110_device::nes_txc_22110_device(const machine_config &mconfig, const
+void nes_bmc_jy012005_device::device_start()
+{
+ nes_sxrom_device::device_start();
+ save_item(NAME(m_latch0));
+}
+
+void nes_bmc_jy012005_device::pcb_reset()
+{
+ m_latch0 = 0;
+ nes_sxrom_device::pcb_reset();
+}
+
void nes_bmc_jy820845c_device::device_start()
{
nes_sxrom_device::device_start();
@@ -179,6 +197,43 @@ void nes_ninjaryu_device::write_h(offs_t offset, u8 data)
/*-------------------------------------------------
+ BMC-JY012005
+
+ Games: 1998 Super HiK 8 in 1 (JY-021B)
+
+ MMC1 clone with banking for multigame menu.
+
+ NES 2.0: mapper 404
+
+ In MAME: Supported.
+
+ -------------------------------------------------*/
+
+void nes_bmc_jy012005_device::set_prg()
+{
+ u8 mode = !BIT(m_latch0, 6);
+ nes_sxrom_device::set_prg((m_latch0 & 0x07 & ~mode) << 3, mode << 3 | 0x07);
+}
+
+void nes_bmc_jy012005_device::set_chr()
+{
+ nes_sxrom_device::set_chr((m_latch0 & 0x07) << 5, 0x1f);
+}
+
+void nes_bmc_jy012005_device::write_m(offs_t offset, u8 data)
+{
+ LOG_MMC(("bmc_jy012005 write_m, offset: %04x, data: %02x\n", offset, data));
+
+ if (!BIT(m_latch0, 7)) // outer bank lock
+ {
+ m_latch0 = data;
+ set_prg();
+ set_chr();
+ }
+}
+
+/*-------------------------------------------------
+
BMC-JY820845C
Games: 7 in 1 1993 Chess Series (JY-015)