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authorGravatarGravatar Angelo Salese <angelosa@users.noreply.github.com>2020-02-25 20:16:42 +0100
committerGravatarGravatar GitHub <noreply@github.com>2020-02-25 20:16:42 +0100
commita74e8df5e05d0ecf0fda95491e354888fd8c62c3 (patch) (github)
tree5550e5f868f505f012a320f8459b158954bac330 /src/mame/drivers
parent2bd9d4516bc404998017a4d0fe9f4ea0d25aa66e (diff)
downloadmame-a74e8df5e05d0ecf0fda95491e354888fd8c62c3.tar.bz2
mame-a74e8df5e05d0ecf0fda95491e354888fd8c62c3.zip
Tempted to mark this as MACHINE_UNEMULATED_PROTECTION (nw)
Diffstat (limited to 'src/mame/drivers')
-rw-r--r--src/mame/drivers/clshroad.cpp8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mame/drivers/clshroad.cpp b/src/mame/drivers/clshroad.cpp
index db482e48c6c..07b6b8391f1 100644
--- a/src/mame/drivers/clshroad.cpp
+++ b/src/mame/drivers/clshroad.cpp
@@ -23,6 +23,13 @@ TODO:
text layer is not correctly emulated, fixed by initializing VRAM to 0xf0? (that layer seems unused by this game);
- firebatl: bad sprite colors;
- firebatl: remove ROM patch;
+- firebatl: reads $6000-$6002 and $6100 at POST, and in the range $6100-$61ff before every start
+ of gameplay/after player dies.
+ Currently 0-filled in ROM loading:
+ - $6100 is actually OR-ed with the coinage work RAM buffer setting at $8022,
+ - $6124 are shifted right once at PC=0x5df and stored to $82e6, which is later checked at PC=0x187 and must
+ be $01 otherwise game goes into an infinite loop after dying (without ROM patch)
+ - (more ...)
***************************************************************************/
@@ -181,6 +188,7 @@ static INPUT_PORTS_START( firebatl )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )
PORT_START("DSW1")
+ // TODO: unconventional default, may or may not be related to the ROM patch + whatever lies at $6000-$7fff
PORT_DIPNAME( 0x7f, 0x03, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1,2,3,4,5,6,7")
PORT_DIPSETTING( 0x00, "1" )
PORT_DIPSETTING( 0x01, "2" )