summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/nes/ntdec.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/nes/ntdec.cpp')
-rw-r--r--src/devices/bus/nes/ntdec.cpp43
1 files changed, 41 insertions, 2 deletions
diff --git a/src/devices/bus/nes/ntdec.cpp b/src/devices/bus/nes/ntdec.cpp
index 5967eb51b6c..94c521dd6b8 100644
--- a/src/devices/bus/nes/ntdec.cpp
+++ b/src/devices/bus/nes/ntdec.cpp
@@ -8,6 +8,7 @@
Here we emulate the following PCBs
+ * NTDEC 2746 [mapper 435]
* NTDEC ASDER [mapper 112]
* NTDEC Fighting Hero [mapper 193]
* NTDEC N715021 [mapper 81]
@@ -35,13 +36,19 @@
// constructor
//-------------------------------------------------
+DEFINE_DEVICE_TYPE(NES_NTDEC_2746, nes_ntdec_2746_device, "nes_ntdec_2746", "NES Cart NTDEC 2746 PCB")
DEFINE_DEVICE_TYPE(NES_NTDEC_ASDER, nes_ntdec_asder_device, "nes_ntdec_asder", "NES Cart NTDEC Asder PCB")
DEFINE_DEVICE_TYPE(NES_NTDEC_FH, nes_ntdec_fh_device, "nes_ntdec_fh", "NES Cart NTDEC Fighting Hero PCB")
DEFINE_DEVICE_TYPE(NES_NTDEC_N715021, nes_ntdec_n715021_device, "nes_ntdec_n715021", "NES Cart NTDEC N715021 PCB")
+nes_ntdec_2746_device::nes_ntdec_2746_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : nes_nrom_device(mconfig, NES_NTDEC_2746, tag, owner, clock)
+{
+}
+
nes_ntdec_asder_device::nes_ntdec_asder_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
- : nes_nrom_device(mconfig, NES_NTDEC_ASDER, tag, owner, clock) , m_latch(0), m_chr_outer(0)
+ : nes_nrom_device(mconfig, NES_NTDEC_ASDER, tag, owner, clock), m_latch(0), m_chr_outer(0)
{
}
@@ -58,6 +65,13 @@ nes_ntdec_n715021_device::nes_ntdec_n715021_device(const machine_config &mconfig
+void nes_ntdec_2746_device::pcb_reset()
+{
+ prg16_89ab(0);
+ prg16_cdef(0);
+ chr8(0, CHRROM);
+}
+
void nes_ntdec_asder_device::device_start()
{
common_start();
@@ -97,6 +111,31 @@ void nes_ntdec_n715021_device::pcb_reset()
/*-------------------------------------------------
+ NTDEC 2746 Board
+
+ Games: 14 in 1
+
+ NES 2.0: mapper 435
+
+ In MAME: Supported.
+
+ -------------------------------------------------*/
+
+void nes_ntdec_2746_device::write_h(offs_t offset, u8 data)
+{
+ LOG_MMC(("ntdec_2746 write_h, offset: %04x, data: %02x\n", offset, data));
+
+ u8 bank = bitswap<4>(offset, 9, 8, 7, 5);
+ u8 mode = BIT(offset, 6);
+ prg16_89ab(bank & ~mode);
+ prg16_cdef(bank | mode);
+
+ chr8(offset & 0x0f, CHRROM);
+ set_nt_mirroring(BIT(offset, 4) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
+}
+
+/*-------------------------------------------------
+
NTDEC ASDER Bootleg Board
Games: Cobra Mission, Fighting Hero III, Huang Di, Master
@@ -206,7 +245,7 @@ void nes_ntdec_fh_device::write_m(offs_t offset, u8 data)
void nes_ntdec_n715021_device::write_h(offs_t offset, u8 data)
{
- LOG_MMC(("ntdec_n715021 write_m, offset: %04x, data: %02x\n", offset, data));
+ LOG_MMC(("ntdec_n715021 write_h, offset: %04x, data: %02x\n", offset, data));
prg16_89ab((offset >> 2) & 0x03);
chr8(offset & 0x03, CHRROM);
}