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author Angelo Salese <angelosa@users.noreply.github.com>2011-12-01 17:21:07 +0000
committer Angelo Salese <angelosa@users.noreply.github.com>2011-12-01 17:21:07 +0000
commitc6d91f775eb7ed43a1527e8dbcb7c123268271e6 (patch)
tree3730014faa66c0c13ee499de0a620384f45de492
parentc41bec3413f098c37013228b991f2e856bf0f858 (diff)
Missing files, nothing new ...
-rw-r--r--.gitattributes2
-rw-r--r--src/emu/video/ramdac.c169
-rw-r--r--src/emu/video/ramdac.h77
3 files changed, 248 insertions, 0 deletions
diff --git a/.gitattributes b/.gitattributes
index 59eb15deafc..3099d0ec1bb 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1335,6 +1335,8 @@ src/emu/video/poly.h svneol=native#text/plain
src/emu/video/polynew.h svneol=native#text/plain
src/emu/video/psx.c svneol=native#text/plain
src/emu/video/psx.h svneol=native#text/plain
+src/emu/video/ramdac.c svneol=native#text/plain
+src/emu/video/ramdac.h svneol=native#text/plain
src/emu/video/resnet.c svneol=native#text/plain
src/emu/video/resnet.h svneol=native#text/plain
src/emu/video/rgbgen.h svneol=native#text/plain
diff --git a/src/emu/video/ramdac.c b/src/emu/video/ramdac.c
new file mode 100644
index 00000000000..a8fdd6b9e9d
--- /dev/null
+++ b/src/emu/video/ramdac.c
@@ -0,0 +1,169 @@
+/***************************************************************************
+
+ Generic Palette RAMDAC device
+
+ Written by Angelo Salese
+
+ TODO:
+ - read operation
+ - masking
+
+***************************************************************************/
+
+#include "emu.h"
+#include "video/ramdac.h"
+
+// default address map
+static ADDRESS_MAP_START( ramdac_palram, AS_0, 8 )
+ AM_RANGE(0x000, 0x0ff) AM_RAM // R bank
+ AM_RANGE(0x100, 0x1ff) AM_RAM // G bank
+ AM_RANGE(0x200, 0x2ff) AM_RAM // B bank
+ AM_RANGE(0x300, 0x3ff) AM_NOP
+ADDRESS_MAP_END
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+// device type definition
+const device_type RAMDAC = &device_creator<ramdac_device>;
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// ramdac_device - constructor
+//-------------------------------------------------
+
+ramdac_device::ramdac_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, RAMDAC, "ramdac", tag, owner, clock),
+ device_memory_interface(mconfig, *this),
+ m_pal_index(0),
+ m_pal_mask(0),
+ m_space_config("videoram", ENDIANNESS_LITTLE, 8, 10, 0, NULL, *ADDRESS_MAP_NAME(ramdac_palram))
+{
+
+}
+
+//-------------------------------------------------
+// memory_space_config - return a description of
+// any address spaces owned by this device
+//-------------------------------------------------
+
+const address_space_config *ramdac_device::memory_space_config(address_spacenum spacenum) const
+{
+ return (spacenum == AS_0) ? &m_space_config : NULL;
+}
+
+//-------------------------------------------------
+// readbyte - read a byte at the given address
+//-------------------------------------------------
+
+inline UINT8 ramdac_device::readbyte(offs_t address)
+{
+ return space()->read_byte(address);
+}
+
+
+//-------------------------------------------------
+// writebyte - write a byte at the given address
+//-------------------------------------------------
+
+inline void ramdac_device::writebyte(offs_t address, UINT8 data)
+{
+ space()->write_byte(address, data);
+}
+
+
+//-------------------------------------------------
+// device_validity_check - perform validity checks
+// on this device
+//-------------------------------------------------
+
+bool ramdac_device::device_validity_check(emu_options &options, const game_driver &driver) const
+{
+ bool error = false;
+ return error;
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void ramdac_device::device_start()
+{
+ m_palram = auto_alloc_array_clear(machine(), UINT8, 1 << 10);
+
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void ramdac_device::device_reset()
+{
+ m_pal_index = 0;
+ m_pal_mask = 0;
+ m_int_index = 0;
+}
+
+
+//**************************************************************************
+// READ/WRITE HANDLERS
+//**************************************************************************
+
+WRITE8_MEMBER( ramdac_device::index_w )
+{
+ m_pal_index = data;
+ m_int_index = 0;
+}
+
+WRITE8_MEMBER( ramdac_device::pal_w )
+{
+ writebyte(m_pal_index | (m_int_index << 8),data);
+
+ m_int_index++;
+ if(m_int_index == 3)
+ {
+ m_int_index = 0;
+ m_pal_index++;
+ }
+}
+
+WRITE8_MEMBER( ramdac_device::mask_w )
+{
+ m_pal_mask = data;
+}
+
+//**************************************************************************
+// Generic bank read/write handlers
+//**************************************************************************
+
+READ8_MEMBER( ramdac_device::ramdac_pal_r )
+{
+ return m_palram[offset];
+}
+
+WRITE8_MEMBER( ramdac_device::ramdac_rgb666_w )
+{
+ UINT16 pal_offs;
+
+ m_palram[offset] = data & 0x3f;
+ pal_offs = (offset & 0xff);
+
+ palette_set_color_rgb(machine(),offset&0xff,pal6bit(m_palram[pal_offs|0x000]),pal6bit(m_palram[pal_offs|0x100]),pal6bit(m_palram[pal_offs|0x200]));
+}
+
+WRITE8_MEMBER( ramdac_device::ramdac_rgb888_w )
+{
+ UINT16 pal_offs;
+
+ m_palram[offset] = data;
+ pal_offs = (offset & 0xff);
+
+ palette_set_color_rgb(machine(),offset&0xff,m_palram[pal_offs|0x000],m_palram[pal_offs|0x100],m_palram[pal_offs|0x200]);
+}
+
diff --git a/src/emu/video/ramdac.h b/src/emu/video/ramdac.h
new file mode 100644
index 00000000000..3657a9ca615
--- /dev/null
+++ b/src/emu/video/ramdac.h
@@ -0,0 +1,77 @@
+/***************************************************************************
+
+ Generic Palette RAMDAC device
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __ramdacDEV_H__
+#define __ramdacDEV_H__
+
+#include "emu.h"
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_RAMDAC_ADD(_tag,_map) \
+ MCFG_DEVICE_ADD(_tag, RAMDAC, 0) \
+ MCFG_DEVICE_ADDRESS_MAP(AS_0, _map)
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> v3021_device
+
+class ramdac_device : public device_t,
+ public device_memory_interface
+{
+public:
+ // construction/destruction
+ ramdac_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // I/O operations
+ DECLARE_WRITE8_MEMBER( index_w );
+ DECLARE_WRITE8_MEMBER( pal_w );
+ DECLARE_WRITE8_MEMBER( mask_w );
+
+ DECLARE_READ8_MEMBER( ramdac_pal_r );
+ DECLARE_WRITE8_MEMBER( ramdac_rgb666_w );
+ DECLARE_WRITE8_MEMBER( ramdac_rgb888_w );
+
+ virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const;
+
+protected:
+ // device-level overrides
+ virtual bool device_validity_check(emu_options &options, const game_driver &driver) const;
+ virtual void device_start();
+ virtual void device_reset();
+ inline UINT8 readbyte(offs_t address);
+ inline void writebyte(offs_t address, UINT8 data);
+
+private:
+ UINT8 m_pal_index;
+ UINT8 m_pal_mask;
+ UINT8 m_int_index;
+ UINT8 *m_palram;
+
+ const address_space_config m_space_config;
+};
+
+
+// device type definition
+extern const device_type RAMDAC;
+
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+
+
+#endif