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fix maygay m1a lamping code to work with layouts (nw)

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This commit is contained in:
David Haywood 2016-08-18 22:44:47 +01:00
parent 90032db52e
commit 48ce3c4bd8
1 changed files with 3 additions and 13 deletions
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16
src/mame/drivers/maygay1b.cpp
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@ -623,18 +623,9 @@ WRITE8_MEMBER( maygay1b_state::lamp_data_w )
// Because of the nature of the lamping circuit, there is an element of persistance
// As a consequence, the lamp column data can change before the input strobe without
// causing the relevant lamps to black out.
int bit_offset;
for (int i = 0; i < 8; i++)
{
if(i < 4)
{
bit_offset = i + 4;
}
else
{
bit_offset = i - 4;
}
output().set_lamp_value((8*m_lamp_strobe)+i, ((data & (1 << bit_offset)) !=0));
output().set_lamp_value((8*m_lamp_strobe)+i, ((data & (1 << (i^4))) !=0));
}
m_old_lamp_strobe = m_lamp_strobe;
@ -663,10 +654,9 @@ WRITE8_MEMBER( maygay1b_state::lamp_data_2_w )
// Because of the nature of the lamping circuit, there is an element of persistance
// As a consequence, the lamp column data can change before the input strobe without
// causing the relevant lamps to black out.
for (int i = 0; i < 8; i++)
{
output().set_lamp_value((8*m_lamp_strobe2)+i+128, ((data & (1 << i)) !=0));
output().set_lamp_value((8*m_lamp_strobe)+i+128, ((data & (1 << (i^4))) !=0));
}
m_old_lamp_strobe2 = m_lamp_strobe2;
@ -825,7 +815,7 @@ MACHINE_CONFIG_START( maygay_m1, maygay1b_state )
MCFG_I8279_IN_RL_CB(READ8(maygay1b_state, kbd_r)) // kbd RL lines
#ifndef USE_MCU
// there is no 2nd i8279, the 8051 handles this task!
// on M1B there is a 2nd i8279, on M1 / M1A a 8051 handles this task!
MCFG_DEVICE_ADD("i8279_2", I8279, M1_MASTER_CLOCK/4) // unknown clock
MCFG_I8279_OUT_SL_CB(WRITE8(maygay1b_state, scanlines_2_w)) // scan SL lines
MCFG_I8279_OUT_DISP_CB(WRITE8(maygay1b_state, lamp_data_2_w)) // display A&B