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Diffstat (limited to 'src/devices/cpu/m6502/n2a03.c')
-rw-r--r--src/devices/cpu/m6502/n2a03.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/src/devices/cpu/m6502/n2a03.c b/src/devices/cpu/m6502/n2a03.c
new file mode 100644
index 00000000000..b3b2cb31808
--- /dev/null
+++ b/src/devices/cpu/m6502/n2a03.c
@@ -0,0 +1,76 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/***************************************************************************
+
+ m6502.c
+
+ 6502, NES variant
+
+***************************************************************************/
+
+#include "emu.h"
+#include "n2a03.h"
+
+const device_type N2A03 = &device_creator<n2a03_device>;
+
+n2a03_device::n2a03_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ m6502_device(mconfig, N2A03, "N2A03", tag, owner, clock, "n2a03", __FILE__)
+{
+}
+
+offs_t n2a03_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
+{
+ return disassemble_generic(buffer, pc, oprom, opram, options, disasm_entries);
+}
+
+void n2a03_device::device_start()
+{
+ if(direct_disabled)
+ mintf = new mi_2a03_nd;
+ else
+ mintf = new mi_2a03_normal;
+
+ init();
+}
+
+UINT8 n2a03_device::mi_2a03_normal::read(UINT16 adr)
+{
+ return program->read_byte(adr);
+}
+
+UINT8 n2a03_device::mi_2a03_normal::read_sync(UINT16 adr)
+{
+ return sdirect->read_byte(adr);
+}
+
+UINT8 n2a03_device::mi_2a03_normal::read_arg(UINT16 adr)
+{
+ return direct->read_byte(adr);
+}
+
+void n2a03_device::mi_2a03_normal::write(UINT16 adr, UINT8 val)
+{
+ program->write_byte(adr, val);
+}
+
+UINT8 n2a03_device::mi_2a03_nd::read(UINT16 adr)
+{
+ return program->read_byte(adr);
+}
+
+UINT8 n2a03_device::mi_2a03_nd::read_sync(UINT16 adr)
+{
+ return sprogram->read_byte(adr);
+}
+
+UINT8 n2a03_device::mi_2a03_nd::read_arg(UINT16 adr)
+{
+ return program->read_byte(adr);
+}
+
+void n2a03_device::mi_2a03_nd::write(UINT16 adr, UINT8 val)
+{
+ program->write_byte(adr, val);
+}
+
+#include "cpu/m6502/n2a03.inc"