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coco3: GIME fix for scanlines in legacy graphic modes, add $FF9C scanline support

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This commit is contained in:
Erik G 2015-11-12 10:01:27 -05:00
parent a1e832cd32
commit adb136ffa0
1 changed files with 13 additions and 3 deletions
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16
src/mame/video/gime.cpp
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@ -1297,8 +1297,18 @@ 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:
@ -1540,7 +1550,7 @@ 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;
@ -1580,7 +1590,7 @@ 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)