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mikro80: fixed cass load; kristall2,radio99: fixed cassette

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This commit is contained in:
Robbbert 2020-08-08 21:42:52 +10:00
parent bdc2b7a654
commit f5d61a984c
3 changed files with 22 additions and 9 deletions
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21
src/mame/drivers/mikro80.cpp
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@ -1,17 +1,22 @@
// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic
/***************************************************************************
/*****************************************************************************************
MIKRO80 driver by Miodrag Milanovic
2008-03-10 Preliminary driver.
ToDo:
- Cassette save produces incorrect signal - need schematic of CMT.
- Kristall doesn't seem to have any tape load/save facility?
Cassette:
* Mikro80: loads software items, but not its own saves
* Radio99: can load its own saves; can load radio86 tapes, can load ut88 tapes.
* Kristall2: can load its own saves; can load radio86 tapes; can load radio99 tapes.
****************************************************************************/
ToDo:
- Cassette - need schematic of CMT.
*****************************************************************************************/
#include "emu.h"
@ -21,7 +26,6 @@ ToDo:
#include "sound/volt_reg.h"
#include "emupal.h"
#include "screen.h"
#include "softlist.h"
#include "speaker.h"
/* Address maps */
@ -45,6 +49,7 @@ void mikro80_state::kristall_io(address_map &map)
{
map.unmap_value_high();
map(0x00, 0x03).rw(m_ppi, FUNC(i8255_device::read), FUNC(i8255_device::write));
map(0x02, 0x02).w(FUNC(mikro80_state::portc_w));
// map(0x20, 0x23). init byte 8B, so possibly another ppi with reversed offset like mikro80
}
@ -54,7 +59,8 @@ void mikro80_state::radio99_io(address_map &map)
map(0x01, 0x01).rw(FUNC(mikro80_state::tape_r), FUNC(mikro80_state::tape_w));
// no init byte, so ppi has been replaced by ordinary latches
map(0x04, 0x04).w(FUNC(mikro80_state::sound_w));
map(0x05, 0x05).rw(FUNC(mikro80_state::portc_r), FUNC(mikro80_state::portc_w));
//map(0x05, 0x05).rw(FUNC(mikro80_state::portc_r), FUNC(mikro80_state::portc_w));
map(0x05, 0x05).r(FUNC(mikro80_state::portc_r)).nopw();
map(0x06, 0x06).r(FUNC(mikro80_state::portb_r));
map(0x07, 0x07).w(FUNC(mikro80_state::porta_w));
}
@ -254,6 +260,7 @@ void mikro80_state::kristall(machine_config &config)
{
mikro80(config);
m_maincpu->set_addrmap(AS_IO, &mikro80_state::kristall_io);
m_ppi->in_pc_callback().set(FUNC(mikro80_state::kristall2_portc_r));
}

1
src/mame/includes/mikro80.h
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@ -50,6 +50,7 @@ private:
void sound_w(u8 data);
u8 portb_r();
u8 portc_r();
u8 kristall2_portc_r();
void porta_w(u8 data);
void portc_w(u8 data);
void tape_w(u8 data);

9
src/mame/machine/mikro80.cpp
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@ -10,7 +10,6 @@
#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "includes/mikro80.h"
/* Driver initialization */
@ -39,6 +38,11 @@ u8 mikro80_state::portc_r()
return m_io_keyboard[8]->read();
}
u8 mikro80_state::kristall2_portc_r()
{
return (m_io_keyboard[8]->read() & 0xfe) | ((m_cassette->input() < 0.04) ? 1 : 0);
}
void mikro80_state::porta_w(u8 data)
{
m_keyboard_mask = data ^ 0xff;
@ -46,6 +50,7 @@ void mikro80_state::porta_w(u8 data)
void mikro80_state::portc_w(u8 data)
{
m_cassette->output(BIT(data, 7) ? 1.0 : -1.0); // for Kristall2 only
}
void mikro80_state::machine_start()
@ -85,7 +90,7 @@ void mikro80_state::tape_w(u8 data)
u8 mikro80_state::tape_r()
{
return m_cassette->input() ? 0xff : 0;
return (m_cassette->input() < 0.04) ? 0xff : 0;
}
void mikro80_state::sound_w(u8 data)