diff options
Diffstat (limited to 'src/mame/video/changela.cpp')
-rw-r--r-- | src/mame/video/changela.cpp | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/src/mame/video/changela.cpp b/src/mame/video/changela.cpp index 4391174bde3..098359b15f4 100644 --- a/src/mame/video/changela.cpp +++ b/src/mame/video/changela.cpp @@ -728,12 +728,12 @@ uint32_t changela_state::screen_update_changela(screen_device &screen, bitmap_in return 0; } -WRITE8_MEMBER(changela_state::changela_colors_w) +void changela_state::changela_colors_w(offs_t offset, uint8_t data) { - /* Each color is combined from 3 bits from open-colelctor outputs of ram. + /* Each color is combined from 3 bits from open-collector outputs of ram. Each of the bits is connected to a 220, 470, or 1000 Ohm resistor. There is also a 680 Ohm pull-up resistor connected to 5V, and a - 2.2k resisor connected to GND. Thus these output voltages are obtained: + 2.2k resistor connected to GND. Thus these output voltages are obtained: Val | Vout 000 | 0.766 (220 || 470 || 1k || 2.2k) 001 | 0.855 (220 || 470 || 2.2k) @@ -765,7 +765,7 @@ WRITE8_MEMBER(changela_state::changela_colors_w) } -WRITE8_MEMBER(changela_state::changela_mem_device_select_w) +void changela_state::changela_mem_device_select_w(uint8_t data) { m_mem_dev_selected = (data & 0x07) * 0x800; m_tree_en = (data & 0x30) >> 4; @@ -781,7 +781,7 @@ WRITE8_MEMBER(changela_state::changela_mem_device_select_w) */ } -WRITE8_MEMBER(changela_state::changela_mem_device_w) +void changela_state::changela_mem_device_w(offs_t offset, uint8_t data) { m_memory_devices[m_mem_dev_selected + offset] = data; @@ -793,18 +793,18 @@ WRITE8_MEMBER(changela_state::changela_mem_device_w) } -READ8_MEMBER(changela_state::changela_mem_device_r) +uint8_t changela_state::changela_mem_device_r(offs_t offset) { return m_memory_devices[m_mem_dev_selected + offset]; } -WRITE8_MEMBER(changela_state::changela_slope_rom_addr_hi_w) +void changela_state::changela_slope_rom_addr_hi_w(uint8_t data) { m_slopeROM_bank = (data & 0x03) << 9; } -WRITE8_MEMBER(changela_state::changela_slope_rom_addr_lo_w) +void changela_state::changela_slope_rom_addr_lo_w(uint8_t data) { m_horizon = data; } |