From e4f6a941cbc54e5175bf419d9352397d5f490b2b Mon Sep 17 00:00:00 2001 From: AJR Date: Mon, 2 Sep 2019 20:11:18 -0400 Subject: sk101bl: Show something on the LCD screen; preliminary keyboard stuff (nw) --- src/mame/drivers/sk101bl.cpp | 71 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 55 insertions(+), 16 deletions(-) diff --git a/src/mame/drivers/sk101bl.cpp b/src/mame/drivers/sk101bl.cpp index 9cbf7cefbe1..8a099badb0f 100644 --- a/src/mame/drivers/sk101bl.cpp +++ b/src/mame/drivers/sk101bl.cpp @@ -11,6 +11,8 @@ Attached to the keyboard is a backlit LCD module displaying one row of 16 charac The main board incorporates two DSWs and a "BLMHYB01" hybrid module containing unknown interface logic. +TODO: figure out keycodes (are they translated externally?) + ***********************************************************************************************************************************/ #include "emu.h" @@ -29,6 +31,7 @@ public: : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_lcdc(*this, "lcdc") + , m_key_row(*this, "ROW%u", 0U) { } @@ -43,23 +46,37 @@ private: u8 p1_r(); void p1_w(u8 data); - void p24_latch_w(u8 data); + void scan_load_w(u8 data); + u8 scan_shift_r(); void lcd_control_w(u8 data); + void serial_tx_w(u8 data) { logerror("Serial TX: %02X\n", data); } void prog_map(address_map &map); void ext_map(address_map &map); required_device m_maincpu; required_device m_lcdc; + optional_ioport_array<16> m_key_row; - u8 m_lcd_data; + u8 m_p1_data; u8 m_lcd_control; + u16 m_key_scan; + u16 m_shift_output; + u8 m_row_counter; }; void sk101bl_state::machine_start() { - save_item(NAME(m_lcd_data)); + m_p1_data = 0xff; + m_shift_output = 0; + m_key_scan = 0xffff; + m_row_counter = 0; + + save_item(NAME(m_p1_data)); save_item(NAME(m_lcd_control)); + save_item(NAME(m_key_scan)); + save_item(NAME(m_shift_output)); + save_item(NAME(m_row_counter)); } void sk101bl_state::machine_reset() @@ -69,32 +86,51 @@ void sk101bl_state::machine_reset() HD44780_PIXEL_UPDATE(sk101bl_state::pixel_update) { - if (pos < 16) + if (pos < 16 && line == 0) bitmap.pix16(line * 10 + y, pos * 6 + x) = state; } u8 sk101bl_state::p1_r() { - if (BIT(m_lcd_control, 1) && BIT(m_lcd_control, 3)) - return m_lcdc->read(BIT(m_lcd_control, 2)); - - return m_lcd_data; + return m_lcdc->db_r(); } void sk101bl_state::p1_w(u8 data) { - m_lcd_data = data; + if (BIT(m_p1_data, 7) && BIT(m_p1_data, 6) && !BIT(data, 6) && !BIT(m_lcd_control, 2)) + m_row_counter = (m_row_counter - 1) & 0x0f; + + m_p1_data = data; + m_lcdc->db_w(data); } -void sk101bl_state::p24_latch_w(u8 data) +void sk101bl_state::scan_load_w(u8 data) { - logerror("%s: Writing %02X to P2.4 latch\n", machine().describe_context(), data); + m_key_scan = m_key_row[m_row_counter & 0x0f].read_safe(0xffff); + m_maincpu->set_input_line(MCS51_INT0_LINE, BIT(m_key_scan, 15) ? CLEAR_LINE : ASSERT_LINE); +} + +u8 sk101bl_state::scan_shift_r() +{ + if (!machine().side_effects_disabled()) + { + m_key_scan = (m_key_scan << 1) | 1; + m_maincpu->set_input_line(MCS51_INT0_LINE, BIT(m_key_scan, 15) ? CLEAR_LINE : ASSERT_LINE); + } + return 0xff; } void sk101bl_state::lcd_control_w(u8 data) { - if (BIT(data, 1) && !BIT(data, 3)) - m_lcdc->write(BIT(data, 2), m_lcd_data); + if (BIT(data, 7) && !BIT(m_lcd_control, 7)) + m_shift_output = (m_shift_output << 1) | (BIT(m_p1_data, 7) ? 0 : 1); + + m_lcdc->rw_w(BIT(data, 3)); + m_lcdc->rs_w(BIT(data, 2)); + m_lcdc->e_w(BIT(data, 1)); + + if (BIT(data, 0)) + m_row_counter = 0; m_lcd_control = data; } @@ -106,7 +142,9 @@ void sk101bl_state::prog_map(address_map &map) void sk101bl_state::ext_map(address_map &map) { - map(0x1000, 0x1000).mirror(0x0fff).w(FUNC(sk101bl_state::p24_latch_w)); + map(0x0000, 0x0000).mirror(0x1fff).r(FUNC(sk101bl_state::scan_shift_r)); + map(0x1000, 0x1000).mirror(0x0fff).w(FUNC(sk101bl_state::scan_load_w)); + map(0x2000, 0x7fff).rom().region("program", 0x2000); map(0x4000, 0x4000).mirror(0x0fff).w(FUNC(sk101bl_state::lcd_control_w)); map(0xe000, 0xffff).ram(); // TC5565APL-15L } @@ -122,12 +160,13 @@ void sk101bl_state::sk101bl(machine_config &config) m_maincpu->port_in_cb<1>().set(FUNC(sk101bl_state::p1_r)); m_maincpu->port_out_cb<1>().set(FUNC(sk101bl_state::p1_w)); m_maincpu->port_out_cb<3>().set("alarm", FUNC(speaker_sound_device::level_w)).bit(3); + m_maincpu->serial_tx_cb().set(FUNC(sk101bl_state::serial_tx_w)); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); screen.set_refresh_hz(50); screen.set_screen_update("lcdc", FUNC(hd44780_device::screen_update)); - screen.set_size(16*6, 20); - screen.set_visarea(0, 16*6-1, 0, 20-1); + screen.set_size(16*6, 10); + screen.set_visarea(0, 16*6-1, 0, 10-1); screen.set_palette("palette"); HD44780(config, m_lcdc).set_lcd_size(1, 16); -- cgit v1.2.3