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author hap <happppp@users.noreply.github.com>2020-08-13 10:31:31 +0200
committer hap <happppp@users.noreply.github.com>2020-08-13 10:31:45 +0200
commitc649348f8066bc271a2d774f09cd252c15071c2e (patch)
tree99e19afb8baa8acb2e6c4be0bad45f5a9ff059c8 /src/devices/video
parent13d6ec9e034fed6fddc19d42631c9e3af47a1b44 (diff)
odyssey2.xml: sort list
Diffstat (limited to 'src/devices/video')
-rw-r--r--src/devices/video/i8244.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/devices/video/i8244.cpp b/src/devices/video/i8244.cpp
index 66fcbd96ca6..bc8e02b17e8 100644
--- a/src/devices/video/i8244.cpp
+++ b/src/devices/video/i8244.cpp
@@ -58,6 +58,7 @@ void i8244_device::set_default_params()
void i8245_device::set_default_params()
{
+ // this timing is partially derived externally, 8245 on the PAL console is set to slave mode in vblank (M/S pin)
m_htotal = 456;
m_vtotal = 313;
m_vblank_start = 242;
@@ -389,6 +390,8 @@ void i8244_device::write(offs_t offset, uint8_t data)
m_y_beam_pos = get_y_beam();
m_pos_hold = true;
}
+ // note: manual talks about a hblank interrupt on d0, and a sound interrupt on d2,
+ // but tests done on 8244 reveal no such features
break;
case 0xa7: case 0xa8: case 0xa9: