Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 17:30:55 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

315_5124.c: Improved CRAM writes. Fixes wrong colors on sega logo for robocop3 on gamegear. [Enik Land]

Browse Source
This commit is contained in:
Wilbert Pol 2014-04-29 16:32:47 +00:00
parent a250f22d2d
commit df21eba02c
2 changed files with 37 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
src/emu/video/315_5124.c
View File

@ -617,14 +617,7 @@ WRITE8_MEMBER( sega315_5124_device::vram_write )
break;
case 0x03:
{
UINT16 address = m_addr & m_cram_mask;
if (data != m_CRAM->u8(address))
{
m_CRAM->u8(address) = data;
m_cram_dirty = 1;
}
}
cram_write(data);
break;
}
@ -1691,7 +1684,40 @@ void sega315_5378_device::update_palette()
{
for (i = 0; i < 32; i++)
{
m_current_palette[i] = ((m_CRAM->u8(i * 2 + 1) << 8) | m_CRAM->u8(i * 2)) & 0x0fff;
m_current_palette[i] = m_CRAM->u16(i) & 0x0fff;
}
}
}
void sega315_5124_device::cram_write(UINT8 data)
{
UINT16 address = m_addr & m_cram_mask;
if (data != m_CRAM->u8(address))
{
m_CRAM->u8(address) = data;
m_cram_dirty = 1;
}
}
void sega315_5378_device::cram_write(UINT8 data)
{
if (m_sega315_5124_compatibility_mode)
{
sega315_5124_device::cram_write(data);
}
else
{
if (m_addr & 1)
{
UINT16 address = (m_addr & m_cram_mask) >> 1;
UINT16 dataw = (data << 8) | m_buffer;
if (dataw != m_CRAM->u16(address))
{
m_CRAM->u16(address) = dataw;
m_cram_dirty = 1;
}
}
}
}

2
src/emu/video/315_5124.h
View File

@ -89,6 +89,7 @@ public:
protected:
void set_display_settings();
virtual void update_palette();
virtual void cram_write(UINT8 data);
virtual void draw_scanline( int pixel_offset_x, int pixel_plot_y, int line );
virtual UINT16 get_name_table_address();
void process_line_timer();
@ -193,6 +194,7 @@ protected:
virtual machine_config_constructor device_mconfig_additions() const;
virtual void update_palette();
virtual void cram_write(UINT8 data);
virtual void draw_scanline( int pixel_offset_x, int pixel_plot_y, int line );
virtual UINT16 get_name_table_address();
};