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Diffstat (limited to 'src/mame/drivers/sk101bl.cpp')
-rw-r--r--src/mame/drivers/sk101bl.cpp71
1 files 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<i80c31_device> m_maincpu;
required_device<hd44780_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);