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author Miodrag Milanovic <mmicko@gmail.com>2015-09-13 08:41:44 +0200
committer Miodrag Milanovic <mmicko@gmail.com>2015-09-13 08:41:44 +0200
commitf88cefad27a1737c76e09d99c9fb43e173506081 (patch)
tree2d8167d03579c46e226471747eb4407bd00ed6fa /src/devices/bus/msx_cart/arc.c
parente92ac9e0fa8e99869894bea00589bbb526be30aa (diff)
Move all devices into separate part of src tree (nw)
Diffstat (limited to 'src/devices/bus/msx_cart/arc.c')
-rw-r--r--src/devices/bus/msx_cart/arc.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/devices/bus/msx_cart/arc.c b/src/devices/bus/msx_cart/arc.c
new file mode 100644
index 00000000000..a64f321af14
--- /dev/null
+++ b/src/devices/bus/msx_cart/arc.c
@@ -0,0 +1,64 @@
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
+#include "emu.h"
+#include "arc.h"
+
+
+const device_type MSX_CART_ARC = &device_creator<msx_cart_arc>;
+
+
+msx_cart_arc::msx_cart_arc(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, MSX_CART_ARC, "MSX Cartridge - Arc", tag, owner, clock, "msx_cart_arc", __FILE__)
+ , msx_cart_interface(mconfig, *this)
+ , m_7f(0)
+{
+}
+
+
+void msx_cart_arc::device_start()
+{
+ // Install IO read/write handlers
+ address_space &space = machine().device<cpu_device>("maincpu")->space(AS_IO);
+ space.install_write_handler(0x7f, 0x7f, write8_delegate(FUNC(msx_cart_arc::io_7f_w), this));
+ space.install_read_handler(0x7f, 0x7f, read8_delegate(FUNC(msx_cart_arc::io_7f_r), this));
+}
+
+
+void msx_cart_arc::device_reset()
+{
+ m_7f = 0;
+}
+
+
+void msx_cart_arc::initialize_cartridge()
+{
+ if (get_rom_size() != 0x8000)
+ {
+ fatalerror("arc: Invalid ROM size\n");
+ }
+}
+
+
+READ8_MEMBER(msx_cart_arc::read_cart)
+{
+ if (offset >= 0x4000 && offset < 0xc000)
+ {
+ return get_rom_base()[offset - 0x4000];
+ }
+ return 0xff;
+}
+
+
+WRITE8_MEMBER(msx_cart_arc::io_7f_w)
+{
+ if (data == 0x35)
+ {
+ m_7f++;
+ }
+}
+
+
+READ8_MEMBER(msx_cart_arc::io_7f_r)
+{
+ return ((m_7f & 0x03) == 0x03) ? 0xda : 0xff;
+}