Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 01:11:11 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Added BGx mode selection register (nw)

Browse Source
This commit is contained in:
Wilbert Pol 2012-08-25 12:45:03 +00:00
parent 6c976cac7d
commit 8f71a37c56
2 changed files with 23 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/emu/video/huc6272.c
View File

@ -208,6 +208,28 @@ WRITE32_MEMBER( huc6272_device::write )
m_page_setting = data;
break;
//
// xxxx ---- ---- ---- BG3 mode setting
// ---- xxxx ---- ---- BG2 mode setting
// ---- ---- xxxx ---- BG1 mode setting
// ---- ---- ---- xxxx BG0 mode setting
//
// 0001 - 4 color palette
// 0010 - 16 color palette
// 0011 - 256 color palette
// 0100 - 64k color
// 0101 - 16M color
// 1001 - 4 color palette block mode
// 1010 - 16 color palette block mode
// 1011 - 256 color palette block mode
// others - unused/invalid
case 0x10:
m_bgmode[0] = data & 0x0f;
m_bgmode[1] = ( data >> 4 ) & 0x0f;
m_bgmode[2] = ( data >> 8 ) & 0x0f;
m_bgmode[3] = ( data >> 12 ) & 0x0f;
break;
case 0x13:
m_micro_prg.addr = data & 0xf;
break;

1
src/emu/video/huc6272.h
View File

@ -52,6 +52,7 @@ private:
UINT16 m_kram_inc_r,m_kram_inc_w;
UINT8 m_kram_page_r,m_kram_page_w;
UINT32 m_page_setting;
UINT8 m_bgmode[4];
struct{
UINT8 addr;