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-rw-r--r--src/mame/machine/ac1.cpp108
1 files changed, 0 insertions, 108 deletions
diff --git a/src/mame/machine/ac1.cpp b/src/mame/machine/ac1.cpp
deleted file mode 100644
index 342f77e5b60..00000000000
--- a/src/mame/machine/ac1.cpp
+++ /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"
-
-uint8_t ac1_state::ac1_port_b_r()
-{
- uint8_t data = 0x7f;
-
- if (m_cassette->input() > 0.03)
- data |= 0x80;
-
- return data;
-}
-
-#define BNOT(x) ((x) ? 0 : 1)
-
-uint8_t ac1_state::ac1_port_a_r()
-{
- uint8_t line0 = m_io_line[0]->read();
- uint8_t line1 = m_io_line[1]->read();
- uint8_t line2 = m_io_line[2]->read();
- uint8_t line3 = m_io_line[3]->read();
- uint8_t line4 = m_io_line[4]->read();
- uint8_t line5 = m_io_line[5]->read();
- uint8_t line6 = m_io_line[6]->read();
-
- uint8_t SH = BNOT(BIT(line6,0));
- uint8_t CTRL = BNOT(BIT(line6,1));
- uint8_t SPACE = BIT(line6,2);
- uint8_t ENTER = BIT(line6,3);
- uint8_t BACK = BIT(line6,4);
-
- uint8_t all = line0 | line1 | line2 | line3 | line4 | line5;
- uint8_t s1 = BNOT(BIT(all,0));uint8_t z1 = (line0 !=0) ? 0 : 1;
- uint8_t s2 = BNOT(BIT(all,1));uint8_t z2 = (line1 !=0) ? 0 : 1;
- uint8_t s3 = BNOT(BIT(all,2));uint8_t z3 = (line2 !=0) ? 0 : 1;
- uint8_t s4 = BNOT(BIT(all,3));uint8_t z4 = (line3 !=0) ? 0 : 1;
- uint8_t s5 = BNOT(BIT(all,4));uint8_t z5 = (line4 !=0) ? 0 : 1;
- uint8_t s6 = BNOT(BIT(all,5));uint8_t z6 = (line5 !=0) ? 0 : 1;
- uint8_t s7 = BNOT(BIT(all,6));
- uint8_t s8 = BNOT(BIT(all,7));
- uint8_t 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);
-}
-
-void ac1_state::ac1_port_a_w(uint8_t data)
-{
-}
-
-void ac1_state::ac1_port_b_w(uint8_t data)
-{
- /*
-
- 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 */
-void ac1_state::init_ac1()
-{
-}
-
-void ac1_state::machine_reset()
-{
-}