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mephisto_brikett: mephisto3 clock is supposed to blink (nw)

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This commit is contained in:
hap 2019-08-08 22:38:39 +02:00
parent 534f3eaeb7
commit b25248b5b7
1 changed files with 2 additions and 13 deletions
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15
src/mame/drivers/mephisto_brikett.cpp
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@ -51,10 +51,6 @@ ESB 6000 chessboard:
ESB 3000 hardware is probably same as ESB 6000.
There are no other known external port peripherals.
TODO:
- beeper is noisy on mephisto/mephisto2, is it normal? caused by interrupts triggering mid-beep
(mephisto3 disables interrupts during beep)
******************************************************************************/
#include "emu.h"
@ -133,7 +129,6 @@ private:
u8 m_lcd_mask;
u8 m_digit_idx;
u8 m_digit_data[4];
bool m_reset;
u8 m_esb_led;
@ -146,8 +141,6 @@ void brikett_state::machine_start()
// zerofill
m_lcd_mask = 0;
m_digit_idx = 0;
memset(m_digit_data, 0, sizeof(m_digit_data));
m_esb_led = 0;
m_esb_row = 0;
m_esb_select = 0;
@ -155,8 +148,6 @@ void brikett_state::machine_start()
// register for savestates
save_item(NAME(m_lcd_mask));
save_item(NAME(m_digit_idx));
save_item(NAME(m_digit_data));
save_item(NAME(m_esb_led));
save_item(NAME(m_esb_row));
save_item(NAME(m_esb_select));
@ -202,16 +193,14 @@ READ_LINE_MEMBER(brikett_state::clear_r)
WRITE_LINE_MEMBER(brikett_state::q_w)
{
// Q: LCD digit data mask
m_lcd_mask = state ? 0xff : 0;
m_lcd_mask = state ? 0 : 0xff;
}
WRITE8_MEMBER(brikett_state::lcd_w)
{
// write/shift LCD digit (4*CD4015)
// note: last digit "dp" is the colon in the middle
m_digit_data[m_digit_idx] = (m_digit_data[m_digit_idx] & ~data) | (m_lcd_mask & data);
m_display->write_row(m_digit_idx, m_digit_data[m_digit_idx]);
m_display->write_row(m_digit_idx, data ^ m_lcd_mask);
m_display->update();
m_digit_idx = (m_digit_idx + 1) & 3;