diff options
author | 2022-03-23 10:16:49 -0800 | |
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committer | 2022-03-23 14:16:49 -0400 | |
commit | 00dedfabc90465b6183e6fee4287d3d494921aa6 (patch) | |
tree | 90a5ea2a10251901f757cefd197cae3f0c0a07ab /src/devices/bus/nes/somari.cpp | |
parent | d31fe10f921b6887e5596edc786803fa3a81c57d (diff) |
bus/nes: Simplifications using bit utility functions. (#9444)
* bus/nes: Simplifications using bit utility functions.
* Corrected UNL-KOF97 board's address decoding.
* Cleaned up Gouder board further and added missing mirroring bit. Fixes BG graphics.
Diffstat (limited to 'src/devices/bus/nes/somari.cpp')
-rw-r--r-- | src/devices/bus/nes/somari.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/devices/bus/nes/somari.cpp b/src/devices/bus/nes/somari.cpp index adf8b1b1330..fcbf5a35126 100644 --- a/src/devices/bus/nes/somari.cpp +++ b/src/devices/bus/nes/somari.cpp @@ -148,7 +148,7 @@ void nes_somari_device::mmc1_w(offs_t offset, u8 data) m_mmc1_count = (m_mmc1_count + 1) % 5; if (!m_mmc1_count) { - m_mmc1_reg[(offset & 0x6000) >> 13] = m_mmc1_latch; + m_mmc1_reg[BIT(offset, 13, 2)] = m_mmc1_latch; update_all_banks(); } } @@ -196,7 +196,7 @@ void nes_somari_device::update_prg() set_prg(m_prg_base, m_prg_mask); break; case SOMARI_MMC1_MODE: - switch ((m_mmc1_reg[0] >> 2) & 3) + switch (BIT(m_mmc1_reg[0], 2, 2)) { case 0: case 1: @@ -233,7 +233,7 @@ void nes_somari_device::update_chr() chr4_4(m_mmc1_reg[2] & 0x1f, CHRROM); } else - chr8((m_mmc1_reg[1] & 0x1f) >> 1, CHRROM); + chr8(BIT(m_mmc1_reg[1], 1, 4), CHRROM); break; } } |