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author Dirk Best <mail@dirk-best.de>2015-08-16 10:23:30 +0200
committer Dirk Best <mail@dirk-best.de>2015-08-16 10:26:31 +0200
commit741dd1e705f9be9257b2b4bb5617413f19c6283a (patch)
tree071afcc61d97b14f6f5407e3f8a3edf263d5fd5c /src
parent0f5344075d2133b6d281ab4186562171a1b7869e (diff)
k052109: start adding irq/firq/nmi support
Diffstat (limited to 'src')
-rw-r--r--src/mame/video/k052109.c48
-rw-r--r--src/mame/video/k052109.h23
2 files changed, 64 insertions, 7 deletions
diff --git a/src/mame/video/k052109.c b/src/mame/video/k052109.c
index 52ef33ecb65..ccffe5f2e89 100644
--- a/src/mame/video/k052109.c
+++ b/src/mame/video/k052109.c
@@ -179,7 +179,11 @@ k052109_device::k052109_device(const machine_config &mconfig, const char *tag, d
m_romsubbank(0),
m_scrollctrl(0),
m_char_rom(NULL),
- m_char_size(0)
+ m_char_size(0),
+ m_screen_tag(NULL),
+ m_irq_handler(*this),
+ m_firq_handler(*this),
+ m_nmi_handler(*this)
{
}
@@ -201,11 +205,21 @@ void k052109_device::set_ram(device_t &device, bool ram)
void k052109_device::device_start()
{
- memory_region *ROM = region();
- if (ROM != NULL)
+ if (m_screen_tag != NULL)
{
- m_char_rom = ROM->base();
- m_char_size = ROM->bytes();
+ // make sure our screen is started
+ screen_device *screen = m_owner->subdevice<screen_device>(m_screen_tag);
+ if (!screen->started())
+ throw device_missing_dependencies();
+
+ // and register a callback for vblank state
+ screen->register_vblank_callback(vblank_state_delegate(FUNC(k052109_device::vblank_callback), this));
+ }
+
+ if (region() != NULL)
+ {
+ m_char_rom = region()->base();
+ m_char_size = region()->bytes();
}
decode_gfx();
@@ -234,6 +248,11 @@ void k052109_device::device_start()
// bind callbacks
m_k052109_cb.bind_relative_to(*owner());
+ // resolve callbacks
+ m_irq_handler.resolve_safe();
+ m_firq_handler.resolve_safe();
+ m_nmi_handler.resolve_safe();
+
save_pointer(NAME(m_ram), 0x6000);
save_item(NAME(m_rmrd_line));
save_item(NAME(m_romsubbank));
@@ -265,10 +284,27 @@ void k052109_device::device_reset()
}
}
+//-------------------------------------------------
+// set_screen_tag - set screen we are attached to
+//-------------------------------------------------
+
+void k052109_device::set_screen_tag(device_t &device, device_t *owner, const char *tag)
+{
+ k052109_device &dev = dynamic_cast<k052109_device &>(device);
+ dev.m_screen_tag = tag;
+}
+
+
/*****************************************************************************
DEVICE HANDLERS
*****************************************************************************/
+void k052109_device::vblank_callback(screen_device &screen, bool state)
+{
+ if (state)
+ m_irq_handler(ASSERT_LINE);
+}
+
READ8_MEMBER( k052109_device::read )
{
if (m_rmrd_line == CLEAR_LINE)
@@ -351,6 +387,8 @@ WRITE8_MEMBER( k052109_device::write )
/* bit 2 = irq enable */
/* the custom chip can also generate NMI and FIRQ, for use with a 6809 */
m_irq_enabled = data & 0x04;
+ if (m_irq_enabled)
+ m_irq_handler(CLEAR_LINE);
}
else if (offset == 0x1d80)
{
diff --git a/src/mame/video/k052109.h b/src/mame/video/k052109.h
index 13f63b61359..5c62bdf1638 100644
--- a/src/mame/video/k052109.h
+++ b/src/mame/video/k052109.h
@@ -13,8 +13,14 @@ typedef device_delegate<void (int layer, int bank, int *code, int *color, int *f
#define MCFG_K052109_CHARRAM(_ram) \
k052109_device::set_ram(*device, _ram);
-class k052109_device : public device_t,
- public device_gfx_interface
+#define MCFG_K052109_SCREEN_TAG(_tag) \
+ k052109_device::set_screen_tag(*device, owner, _tag);
+
+#define MCFG_K052109_IRQ_HANDLER(_devcb) \
+ devcb = &k052109_device::set_irq_handler(*device, DEVCB_##_devcb);
+
+
+class k052109_device : public device_t, public device_gfx_interface
{
static const gfx_layout charlayout;
static const gfx_layout charlayout_ram;
@@ -25,8 +31,12 @@ public:
k052109_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~k052109_device() {}
+ template<class _Object> static devcb_base &set_irq_handler(device_t &device, _Object object)
+ { return downcast<k052109_device &>(device).m_irq_handler.set_callback(object); }
+
static void set_k052109_callback(device_t &device, k052109_cb_delegate callback) { downcast<k052109_device &>(device).m_k052109_cb = callback; }
static void set_ram(device_t &device, bool ram);
+ static void set_screen_tag(device_t &device, device_t *owner, const char *tag);
/*
The callback is passed:
@@ -57,10 +67,13 @@ public:
void tilemap_mark_dirty(int tmap_num);
void tilemap_draw(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int tmap_num, UINT32 flags, UINT8 priority);
+ void vblank_callback(screen_device &screen, bool state);
+
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
+
private:
// internal state
UINT8 *m_ram;
@@ -86,8 +99,14 @@ private:
UINT8 *m_char_rom;
UINT32 m_char_size;
+ const char *m_screen_tag;
+
k052109_cb_delegate m_k052109_cb;
+ devcb_write_line m_irq_handler;
+ devcb_write_line m_firq_handler;
+ devcb_write_line m_nmi_handler;
+
TILE_GET_INFO_MEMBER(get_tile_info0);
TILE_GET_INFO_MEMBER(get_tile_info1);
TILE_GET_INFO_MEMBER(get_tile_info2);