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Merge pull request #1086 from milliluk/gime-scanline

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coco3: GIME fix for scanlines in legacy graphic modes
This commit is contained in:
Olivier Galibert 2016-07-12 08:15:30 +02:00 committed by GitHub
commit 4700b77e99
1 changed files with 13 additions and 3 deletions
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16
src/mame/video/gime.cpp
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@ -1253,8 +1253,18 @@ inline UINT16 gime_base_device::get_lines_per_row(void)
case MODE_GM2|MODE_GM0:
case MODE_GM2|MODE_GM1:
case MODE_GM2|MODE_GM1|MODE_GM0:
lines_per_row = 12;
{
// http://cocogamedev.mxf.yuku.com/topic/4299238#.VyC6ozArI-U
static int ff9c_lines_per_row[16] =
{
11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 4, 3, 2, 1, 12
};
int i = m_gime_registers[0x0C] & 0x0F;
//lines_per_row = 12;
lines_per_row = ff9c_lines_per_row[i];
break;
}
case MODE_AG:
case MODE_AG|MODE_GM0:
@ -1496,7 +1506,7 @@ void gime_base_device::record_body_scanline(UINT16 physical_scanline, UINT16 log
}
}
/* is the GIME hoizontal virtual screen enabled? */
/* is the GIME horizontal virtual screen enabled? */
if (m_gime_registers[0x0F] & 0x80)
{
pitch = 256;
@ -1536,7 +1546,7 @@ void gime_base_device::update_geometry(void)
{
UINT16 top_border_scanlines, body_scanlines;
switch(m_legacy_video ? 0x00 : (m_gime_registers[9] & 0x60))
switch(m_gime_registers[9] & 0x60) // GIME affects scanlines change even in legacy modes
{
case 0x00:
// 192 lines (and legacy video)