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author | hap <happppp@users.noreply.github.com> | 2020-08-13 10:31:31 +0200 |
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committer | hap <happppp@users.noreply.github.com> | 2020-08-13 10:31:45 +0200 |
commit | c649348f8066bc271a2d774f09cd252c15071c2e (patch) | |
tree | 99e19afb8baa8acb2e6c4be0bad45f5a9ff059c8 /src/devices/video | |
parent | 13d6ec9e034fed6fddc19d42631c9e3af47a1b44 (diff) |
odyssey2.xml: sort list
Diffstat (limited to 'src/devices/video')
-rw-r--r-- | src/devices/video/i8244.cpp | 3 |
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: |