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/taito.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/taito.cpp')
-rw-r--r-- | src/devices/bus/nes/taito.cpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/devices/bus/nes/taito.cpp b/src/devices/bus/nes/taito.cpp index 28c37b6109c..8c806672a7d 100644 --- a/src/devices/bus/nes/taito.cpp +++ b/src/devices/bus/nes/taito.cpp @@ -298,19 +298,19 @@ void nes_x1_005_device::write_m(offs_t offset, uint8_t data) switch (offset) { case 0x1ef0: - chr2_0((data & 0x7f) >> 1, CHRROM); + chr2_0(BIT(data, 1, 6), CHRROM); if (m_x1_005_alt_mirroring) { - set_nt_page(0, CIRAM, (data & 0x80) ? 1 : 0, 1); - set_nt_page(1, CIRAM, (data & 0x80) ? 1 : 0, 1); + set_nt_page(0, CIRAM, BIT(data, 7), 1); + set_nt_page(1, CIRAM, BIT(data, 7), 1); } break; case 0x1ef1: - chr2_2((data & 0x7f) >> 1, CHRROM); + chr2_2(BIT(data, 1, 6), CHRROM); if (m_x1_005_alt_mirroring) { - set_nt_page(2, CIRAM, (data & 0x80) ? 1 : 0, 1); - set_nt_page(3, CIRAM, (data & 0x80) ? 1 : 0, 1); + set_nt_page(2, CIRAM, BIT(data, 7), 1); + set_nt_page(3, CIRAM, BIT(data, 7), 1); } break; case 0x1ef2: |