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author Miodrag Milanovic <mmicko@gmail.com>2012-07-28 14:33:57 +0000
committer Miodrag Milanovic <mmicko@gmail.com>2012-07-28 14:33:57 +0000
commitba882201e60887363c82bd366db795cf836da172 (patch)
tree739c7208b7d8fe72e56a726e3fe761fb6ada9f2e /src
parentbacbc328512702eb69141250f40fd1ffc8d2fa8a (diff)
Sync with MESS (nw)
Diffstat (limited to 'src')
-rw-r--r--src/emu/video/pc_cga.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/emu/video/pc_cga.c b/src/emu/video/pc_cga.c
index b6de90ebe3c..439a74f171a 100644
--- a/src/emu/video/pc_cga.c
+++ b/src/emu/video/pc_cga.c
@@ -1137,6 +1137,7 @@ static void pc_cga_plantronics_w(running_machine &machine, int data)
static WRITE8_HANDLER ( char_ram_w )
{
UINT8 *gfx = space->machine().root_device().memregion("gfx1")->base();
+ offset ^= BIT(offset, 12);
logerror("write char ram %04x %02x\n",offset,data);
gfx[offset + 0x0000] = data;
gfx[offset + 0x0800] = data;
@@ -1147,6 +1148,7 @@ static WRITE8_HANDLER ( char_ram_w )
static READ8_HANDLER ( char_ram_r )
{
UINT8 *gfx = space->machine().root_device().memregion("gfx1")->base();
+ offset ^= BIT(offset, 12);
return gfx[offset];
}
@@ -1226,8 +1228,7 @@ static WRITE8_HANDLER( pc_cga8_w )
fatalerror("CGA: Bus width %d not supported", buswidth);
break;
}
- space_prg->install_legacy_readwrite_handler(0xb8000, 0xb87ff, FUNC(char_ram_r),FUNC(char_ram_w), mask );
- space_prg->install_legacy_readwrite_handler(0xb9000, 0xb97ff, FUNC(char_ram_r),FUNC(char_ram_w), mask );
+ space_prg->install_legacy_readwrite_handler(0xb8000, 0xb9fff, FUNC(char_ram_r),FUNC(char_ram_w), mask );
} else {
if (cga.videoram_size== 0x4000) {
space_prg->install_readwrite_bank(0xb8000, 0xbbfff, 0, 0x04000, "bank11" );