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Diffstat (limited to 'src/devices/cpu/m6502/m4510.cpp')
-rw-r--r--src/devices/cpu/m6502/m4510.cpp106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/devices/cpu/m6502/m4510.cpp b/src/devices/cpu/m6502/m4510.cpp
new file mode 100644
index 00000000000..2a7eb10ee1e
--- /dev/null
+++ b/src/devices/cpu/m6502/m4510.cpp
@@ -0,0 +1,106 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/***************************************************************************
+
+ m4510.c
+
+ 65ce02 with a mmu and a cia integrated
+
+***************************************************************************/
+
+#include "emu.h"
+#include "m4510.h"
+
+const device_type M4510 = &device_creator<m4510_device>;
+
+m4510_device::m4510_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ m65ce02_device(mconfig, M4510, "M4510", tag, owner, clock, "m4510", __FILE__)
+{
+ program_config.m_addrbus_width = 20;
+ program_config.m_logaddr_width = 16;
+ program_config.m_page_shift = 13;
+ sprogram_config.m_addrbus_width = 20;
+ sprogram_config.m_logaddr_width = 16;
+ sprogram_config.m_page_shift = 13;
+}
+
+offs_t m4510_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 m4510_device::device_start()
+{
+ if(direct_disabled)
+ mintf = new mi_4510_nd(this);
+ else
+ mintf = new mi_4510_normal(this);
+
+ m65ce02_device::init();
+
+ save_item(NAME(map_offset));
+ save_item(NAME(map_enable));
+}
+
+void m4510_device::device_reset()
+{
+ map_offset[0] = map_offset[1] = 0;
+ map_enable = 0;
+ nomap = true;
+
+ // Wild guess, this setting makes the cpu start executing some code in the c65 driver
+ //map_offset[1] = 0x2e000;
+ //map_enable = 0x80;
+ m65ce02_device::device_reset();
+}
+
+bool m4510_device::memory_translate(address_spacenum spacenum, int intention, offs_t &address)
+{
+ if (spacenum == AS_PROGRAM)
+ {
+ address = map(address);
+ }
+
+ return true;
+}
+
+m4510_device::mi_4510_normal::mi_4510_normal(m4510_device *_base)
+{
+ base = _base;
+}
+
+UINT8 m4510_device::mi_4510_normal::read(UINT16 adr)
+{
+ return program->read_byte(base->map(adr));
+}
+
+UINT8 m4510_device::mi_4510_normal::read_sync(UINT16 adr)
+{
+ return sdirect->read_byte(base->map(adr));
+}
+
+UINT8 m4510_device::mi_4510_normal::read_arg(UINT16 adr)
+{
+ return direct->read_byte(base->map(adr));
+}
+
+void m4510_device::mi_4510_normal::write(UINT16 adr, UINT8 val)
+{
+ program->write_byte(base->map(adr), val);
+}
+
+m4510_device::mi_4510_nd::mi_4510_nd(m4510_device *_base) : mi_4510_normal(_base)
+{
+}
+
+UINT8 m4510_device::mi_4510_nd::read_sync(UINT16 adr)
+{
+ return sprogram->read_byte(base->map(adr));
+}
+
+UINT8 m4510_device::mi_4510_nd::read_arg(UINT16 adr)
+{
+ return program->read_byte(base->map(adr));
+}
+
+#include "cpu/m6502/m4510.inc"