diff options
author | Dirk Best <mail@dirk-best.de> | 2017-03-06 22:14:39 +0100 |
---|---|---|
committer | GitHub <noreply@github.com> | 2017-03-06 22:14:39 +0100 |
commit | 58b3d34358ecbc4a7e3ea143544f180b37de2d0e (patch) | |
tree | e811259d9421eaa56036f9dc14d749cb347ddc91 | |
parent | 4b914177c88ab5b62664210374d276cc2bf5e670 (diff) | |
parent | a3e214b089812cc99a4de1973cdbd7d1d7c59461 (diff) |
Merge pull request #2092 from SailorSat/master
vicdual: nsub gradient
-rw-r--r-- | src/mame/drivers/polyplay.cpp | 2 | ||||
-rw-r--r-- | src/mame/drivers/vicdual.cpp | 6 | ||||
-rw-r--r-- | src/mame/includes/vicdual.h | 1 | ||||
-rw-r--r-- | src/mame/video/vicdual.cpp | 17 |
4 files changed, 24 insertions, 2 deletions
diff --git a/src/mame/drivers/polyplay.cpp b/src/mame/drivers/polyplay.cpp index 9e957d405bf..aaa7d885969 100644 --- a/src/mame/drivers/polyplay.cpp +++ b/src/mame/drivers/polyplay.cpp @@ -268,7 +268,7 @@ ADDRESS_MAP_END static ADDRESS_MAP_START( polyplay_io_zrepp, AS_IO, 8, polyplay_state ) AM_IMPORT_FROM(polyplay_io_zre) - // TODO: add SIO ports here + AM_RANGE(0x88, 0x8b) AM_DEVREADWRITE(Z80SIO_TAG, z80sio_device, read, write) ADDRESS_MAP_END static INPUT_PORTS_START( polyplay ) diff --git a/src/mame/drivers/vicdual.cpp b/src/mame/drivers/vicdual.cpp index a4a1910b3c1..b704f867d68 100644 --- a/src/mame/drivers/vicdual.cpp +++ b/src/mame/drivers/vicdual.cpp @@ -2247,7 +2247,11 @@ WRITE8_MEMBER(vicdual_state::nsub_io_w) { if (offset & 0x01) assert_coin_status(); if (offset & 0x02) { /* nsub_audio_w(0, data) */ } - if (offset & 0x04) palette_bank_w(space, 0, data); + if (offset & 0x04) + { + palette_bank_w(space, 0, data); + m_gradient = data & 4; + } } diff --git a/src/mame/includes/vicdual.h b/src/mame/includes/vicdual.h index d13b3befec8..6b7b6a8f75f 100644 --- a/src/mame/includes/vicdual.h +++ b/src/mame/includes/vicdual.h @@ -58,6 +58,7 @@ public: uint8_t m_coin_status; uint8_t m_palette_bank; + uint8_t m_gradient; uint8_t m_samurai_protection_data; int m_nsub_coin_counter; int m_nsub_play_counter; diff --git a/src/mame/video/vicdual.cpp b/src/mame/video/vicdual.cpp index f541766edfd..12c8c83d34a 100644 --- a/src/mame/video/vicdual.cpp +++ b/src/mame/video/vicdual.cpp @@ -112,6 +112,23 @@ uint32_t vicdual_state::screen_update_color(screen_device &screen, bitmap_rgb32 fore_pen = pens_from_color_prom[(color_prom[offs] >> 5) & 0x07]; } + if (m_gradient == 0x04) + { + // used by nsub and starrkr (maybe others) + // bit 4 on palette_bank_w seems to enable/disable the starfield/gradient + // how exactly those work is unclear right now + if (x >= 24 && x < 105) + { + // nsub - black to blue gradient + back_pen = rgb_t(0x00, 0x00, (x - 24) * 3); + } + if (x >= 105 && x < 233) + { + // nsub - blue to cyan gradient + back_pen = rgb_t(0x00, 0x80 + (x - 105), 0xff); + } + } + /* plot the current pixel */ pen = (video_data & 0x80) ? fore_pen : back_pen; bitmap.pix32(y, x) = pen; |