diff options
Diffstat (limited to 'src/mess/machine/ac1.c')
-rw-r--r-- | src/mess/machine/ac1.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/src/mess/machine/ac1.c b/src/mess/machine/ac1.c deleted file mode 100644 index e504807ef96..00000000000 --- a/src/mess/machine/ac1.c +++ /dev/null @@ -1,108 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Miodrag Milanovic -/*************************************************************************** - - AC1 video driver by Miodrag Milanovic - - 15/01/2009 Preliminary driver. - -****************************************************************************/ - -#include "emu.h" -#include "machine/z80pio.h" -#include "imagedev/cassette.h" -#include "includes/ac1.h" - -READ8_MEMBER(ac1_state::ac1_port_b_r) -{ - UINT8 data = 0x7f; - - if (m_cassette->input() > 0.03) - data |= 0x80; - - return data; -} - -#define BNOT(x) ((x) ? 0 : 1) - -READ8_MEMBER(ac1_state::ac1_port_a_r) -{ - UINT8 line0 = m_io_line[0]->read(); - UINT8 line1 = m_io_line[1]->read(); - UINT8 line2 = m_io_line[2]->read(); - UINT8 line3 = m_io_line[3]->read(); - UINT8 line4 = m_io_line[4]->read(); - UINT8 line5 = m_io_line[5]->read(); - UINT8 line6 = m_io_line[6]->read(); - - UINT8 SH = BNOT(BIT(line6,0)); - UINT8 CTRL = BNOT(BIT(line6,1)); - UINT8 SPACE = BIT(line6,2); - UINT8 ENTER = BIT(line6,3); - UINT8 BACK = BIT(line6,4); - - UINT8 all = line0 | line1 | line2 | line3 | line4 | line5; - UINT8 s1 = BNOT(BIT(all,0));UINT8 z1 = (line0 !=0) ? 0 : 1; - UINT8 s2 = BNOT(BIT(all,1));UINT8 z2 = (line1 !=0) ? 0 : 1; - UINT8 s3 = BNOT(BIT(all,2));UINT8 z3 = (line2 !=0) ? 0 : 1; - UINT8 s4 = BNOT(BIT(all,3));UINT8 z4 = (line3 !=0) ? 0 : 1; - UINT8 s5 = BNOT(BIT(all,4));UINT8 z5 = (line4 !=0) ? 0 : 1; - UINT8 s6 = BNOT(BIT(all,5));UINT8 z6 = (line5 !=0) ? 0 : 1; - UINT8 s7 = BNOT(BIT(all,6)); - UINT8 s8 = BNOT(BIT(all,7)); - UINT8 tast,td0,td1,td2,td3,td4,td5,td6,dg5; - - /* Additional double keys */ - if (SPACE) { - z1 = 0; s1 = 0; SH = 0; - } - if (ENTER) { - z4 = 0; s6 = 0; CTRL = 0; - } - if (BACK) { - z4 = 0; s1 = 0; CTRL = 0; - } - - tast = BNOT(s1 & s2 & s3 & s4 & s5 &s6 & s7 & s8); - td0 = BNOT(s2 & s4 & s6 & s8); - td1 = BNOT(s3 & s4 & s7 & s8); - td2 = BNOT(s5 & s6 & s7 & s8); - td3 = BNOT(z2 & z4 & z6); - td4 = BNOT(BNOT(BNOT(z1 & z2) & SH) & z5 & z6); - dg5 = BNOT(z3 & z4 & z5 & z6); - td5 = BNOT(BNOT(dg5 & BNOT(SH)) & z1 & z2); - td6 = (dg5 & CTRL); - return td0 + (td1 << 1) +(td2 << 2) +(td3 << 3) +(td4 << 4) +(td5 << 5) +(td6 << 6) +(tast << 7); -} - -WRITE8_MEMBER(ac1_state::ac1_port_a_w) -{ -} - -WRITE8_MEMBER(ac1_state::ac1_port_b_w) -{ - /* - - bit description - - 0 - 1 RTTY receive - 2 RTTY transmit - 3 RTTY PTT - 4 - 5 - 6 cassette out - 7 cassette in - - */ - m_cassette->output((data & 0x40) ? -1.0 : +1.0); -} - -/* Driver initialization */ -DRIVER_INIT_MEMBER(ac1_state,ac1) -{ -} - -void ac1_state::machine_reset() -{ -} |