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author cracyc <cracyc@users.noreply.github.com>2021-07-23 22:00:52 -0500
committer cracyc <cracyc@users.noreply.github.com>2021-07-23 22:00:52 -0500
commit3e2915660f606e64d03921d7aad3bcb9de1dd55b (patch)
tree9147768134343c48f706657d889e60d3fe8753b0
parenta2672df9b6ea53bea99e79cd28d71c6f1fdb4a9e (diff)
sslam: try to fix graphics
-rw-r--r--src/mame/drivers/sslam.cpp5
-rw-r--r--src/mame/includes/sslam.h2
2 files changed, 7 insertions, 0 deletions
diff --git a/src/mame/drivers/sslam.cpp b/src/mame/drivers/sslam.cpp
index 3b067bf0f97..e984cd3c363 100644
--- a/src/mame/drivers/sslam.cpp
+++ b/src/mame/drivers/sslam.cpp
@@ -379,6 +379,9 @@ void sslam_state::sslam_program_map(address_map &map)
map(0x000000, 0xffffff).rom(); /* I don't honestly know where the rom is mirrored .. so all unmapped reads / writes go to rom */
map(0x000400, 0x07ffff).ram();
+ // maybe video register, protection in fpga, rand? Nothing about this is hardware correct.
+ map(0x000458, 0x00045b).lrw16([this](offs_t offset) { return offset ? m_unk_458 : m_unk_458 >> 16; }, "unk_458_r",
+ [this](offs_t offset, uint16_t data) { if(offset) m_unk_458 = (data & 0xfff) * 0xb1; }, "unk_458_w");
map(0x100000, 0x103fff).ram().w(FUNC(sslam_state::sslam_bg_tileram_w)).share("bg_tileram");
map(0x104000, 0x107fff).ram().w(FUNC(sslam_state::sslam_md_tileram_w)).share("md_tileram");
map(0x108000, 0x10ffff).ram().w(FUNC(sslam_state::sslam_tx_tileram_w)).share("tx_tileram");
@@ -693,11 +696,13 @@ void sslam_state::machine_start()
m_track = 0;
m_melody = 0;
m_bar = 0;
+ m_unk_458 = 0;
save_item(NAME(m_track));
save_item(NAME(m_melody));
save_item(NAME(m_bar));
save_item(NAME(m_snd_bank));
+ save_item(NAME(m_unk_458));
m_music_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(sslam_state::music_playback),this));
}
diff --git a/src/mame/includes/sslam.h b/src/mame/includes/sslam.h
index a3f5c5230be..76b306115c1 100644
--- a/src/mame/includes/sslam.h
+++ b/src/mame/includes/sslam.h
@@ -62,6 +62,8 @@ protected:
uint8_t m_oki_command;
uint8_t m_oki_bank;
+ uint32_t m_unk_458;
+
tilemap_t *m_bg_tilemap;
tilemap_t *m_tx_tilemap;
tilemap_t *m_md_tilemap;