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author bmcphail <bmcphail@vcmame.net>2018-08-22 16:29:52 -0400
committer bmcphail <bmcphail@vcmame.net>2018-08-22 16:29:52 -0400
commit58cc931748275809e5d03dca27251015f3171d09 (patch)
tree1c55fc22888aa6f019ccc0d63c752674e52a0d53 /src/mame
parentb2e856bbc00864d6696fd1c880680f9229ee71a6 (diff)
Operation Wolf
Added accurate hardware information for documentation
Diffstat (limited to 'src/mame')
-rw-r--r--src/mame/video/opwolf.cpp18
1 files changed, 12 insertions, 6 deletions
diff --git a/src/mame/video/opwolf.cpp b/src/mame/video/opwolf.cpp
index a0248dbf2f9..c53e7779dcc 100644
--- a/src/mame/video/opwolf.cpp
+++ b/src/mame/video/opwolf.cpp
@@ -14,22 +14,26 @@
WRITE16_MEMBER(opwolf_state::opwolf_spritectrl_w)
{
+ // popmessage("opwolf_spritectrl_w ctrl = %4x", data);
if (offset == 0)
{
- /* bits 0 and 1 always set */
+ /* bit 0 -> MOTOR1 transistor */
+ /* bit 1 -> MOTOR2 transistor */
+ /* bit 2 -> Reset c-chip and coin custom PC050CM (active low) */
+ /* bit 3 -> Not connected */
+ /* bit 4 -> LATCH - used to signal light gun position can be latched to inputs on v-blank */
/* bits 5-7 are the sprite palette bank */
- /* other bits unknown */
m_pc090oj->set_sprite_ctrl((data & 0xe0) >> 5);
- /* If data = 4, the Piston Motor is off, otherwise it's on. */
- if (data == 4)
+ /* If data & 3, the Piston Motor is activated via M-1/M-2 connector */
+ if (data & 3)
{
- output().set_value("Player1_Recoil_Piston", 0);
+ output().set_value("Player1_Recoil_Piston", 1);
}
else
{
- output().set_value("Player1_Recoil_Piston", 1);
+ output().set_value("Player1_Recoil_Piston", 0);
}
}
}
@@ -47,6 +51,8 @@ uint32_t opwolf_state::screen_update_opwolf(screen_device &screen, bitmap_ind16
screen.priority().fill(0, cliprect);
+ // Sprite/tilemap priority is hardwired by the PAL16L8 at location 19
+
m_pc080sn->tilemap_draw(screen, bitmap, cliprect, layer[0], TILEMAP_DRAW_OPAQUE, 1);
m_pc080sn->tilemap_draw(screen, bitmap, cliprect, layer[1], 0, 2);