/
accomm.cpp
1092 lines (956 loc) · 44.1 KB
/
accomm.cpp
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// license:BSD-3-Clause
// copyright-holders:R. Belmont, Wilbert Pol, Nigel Barnes
/***************************************************************************
Acorn Communicator
Driver-in-progress by R. Belmont
Electron ULA emulation by Wilbert Pol
Main CPU:
65C816
Other chips:
6850 UART
6522 VIA
SAA5240 (Teletext)
MC68B54 (Econet)
AM7910 (Modem)
PCD3312 (Tone Generator)
PCF0335 (Pulse Dialler?)
PCF8573 (RTC)
SCN2641 (RS423)
****************************************************************************/
#include "emu.h"
#include "cpu/g65816/g65816.h"
#include "machine/6522via.h"
#include "machine/6850acia.h"
#include "machine/clock.h"
#include "machine/input_merger.h"
#include "machine/mc6854.h"
#include "machine/ram.h"
#include "machine/nvram.h"
#include "machine/pcf8573.h"
#include "machine/scn_pci.h"
#include "sound/beep.h"
#include "sound/pcd3311.h"
#include "video/saa5240.h"
#include "bus/econet/econet.h"
#include "bus/centronics/ctronics.h"
#include "bus/rs232/rs232.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
#include "accomm.lh"
namespace {
/* Interrupts */
#define INT_HIGH_TONE 0x40
#define INT_TRANSMIT_EMPTY 0x20
#define INT_RECEIVE_FULL 0x10
#define INT_RTC 0x08
#define INT_DISPLAY_END 0x04
#define INT_SET 0x100
#define INT_CLEAR 0x200
class accomm_state : public driver_device
{
public:
accomm_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_maincpu_region(*this, "maincpu"),
m_irqs(*this, "irqs"),
m_screen(*this, "screen"),
m_cct(*this, "saa5240"),
m_beeper(*this, "beeper"),
m_dtmf(*this, "dtmf"),
m_ram(*this, RAM_TAG),
m_rtc(*this, "rtc"),
m_via(*this, "via6522"),
m_acia(*this, "acia"),
m_acia_clock(*this, "acia_clock"),
m_scn2641(*this, "aci"),
m_adlc(*this, "mc6854"),
m_vram(*this, "vram"),
m_keybd1(*this, "LINE1.%u", 0),
m_keybd2(*this, "LINE2.%u", 0),
m_shiftlock_led(*this, "shiftlock_led"),
m_capslock_led(*this, "capslock_led"),
m_ch00rom_enabled(true)
{ }
void accomm(machine_config &config);
void accommi(machine_config &config);
DECLARE_INPUT_CHANGED_MEMBER(trigger_reset);
protected:
// driver_device overrides
virtual void machine_reset() override;
virtual void machine_start() override;
virtual void video_start() override;
TIMER_CALLBACK_MEMBER(scanline_interrupt_check);
private:
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void ch00switch_w(offs_t offset, uint8_t data);
uint8_t read_keyboard1(offs_t offset);
uint8_t read_keyboard2(offs_t offset);
uint8_t ram_r(offs_t offset);
void ram_w(offs_t offset, uint8_t data);
uint8_t sheila_r(offs_t offset);
void sheila_w(offs_t offset, uint8_t data);
void accomm_palette(palette_device &palette) const;
void main_map(address_map &map);
void saa5240_map(address_map &map);
// devices
required_device<g65816_device> m_maincpu;
required_memory_region m_maincpu_region;
required_device<input_merger_device> m_irqs;
required_device<screen_device> m_screen;
required_device<saa5240_device> m_cct;
required_device<beep_device> m_beeper;
required_device<pcd3311_device> m_dtmf;
required_device<ram_device> m_ram;
required_device<pcf8573_device> m_rtc;
required_device<via6522_device> m_via;
required_device<acia6850_device> m_acia;
required_device<clock_device> m_acia_clock;
required_device<scn2641_device> m_scn2641;
required_device<mc6854_device> m_adlc;
required_shared_ptr<uint8_t> m_vram;
required_ioport_array<14> m_keybd1, m_keybd2;
output_finder<> m_shiftlock_led;
output_finder<> m_capslock_led;
void interrupt_handler(int mode, int interrupt);
inline uint8_t read_vram( uint16_t addr );
inline void plot_pixel(bitmap_ind16 &bitmap, int x, int y, uint32_t color);
bool m_ch00rom_enabled;
/* ULA context */
struct ULA
{
uint8_t interrupt_status;
uint8_t interrupt_control;
uint8_t rompage;
uint16_t screen_start;
uint16_t screen_base;
uint16_t screen_size;
uint16_t screen_addr;
int screen_dispend;
int current_pal[16];
int communication_mode;
int screen_mode;
int shiftlock_mode;
int capslock_mode;
/* tape reading related */
uint32_t tape_value;
int tape_steps;
int bit_count;
int high_tone_set;
int start_bit;
int stop_bit;
int tape_running;
uint8_t tape_byte;
};
ULA m_ula;
int m_map4[256];
int m_map16[256];
emu_timer *m_scanline_timer;
};
void accomm_state::accomm_palette(palette_device &palette) const
{
for (int i = 0; i < palette.entries(); i++)
{
palette.set_pen_color(i ^ 7, rgb_t(pal1bit(i >> 0), pal1bit(i >> 1), pal1bit(i >> 2)));
}
}
uint8_t accomm_state::read_keyboard1(offs_t offset)
{
uint8_t data = 0;
for (int i = 0; i < 14; i++)
{
if (!(offset & 1))
data |= m_keybd1[i]->read() & 0x0f;
offset = offset >> 1;
}
return data;
}
uint8_t accomm_state::read_keyboard2(offs_t offset)
{
uint8_t data = 0;
for (int i = 0; i < 14; i++)
{
if (!(offset & 1))
data |= m_keybd2[i]->read() & 0x0f;
offset = offset >> 1;
}
return data;
}
void accomm_state::machine_reset()
{
m_ula.communication_mode = 0x04;
m_ula.screen_mode = 0;
m_ula.shiftlock_mode = 0;
m_ula.capslock_mode = 0;
m_ula.screen_start = 0x3000;
m_ula.screen_base = 0x3000;
m_ula.screen_size = 0x8000 - 0x3000;
m_ula.screen_addr = 0x3000;
m_ula.tape_running = 0;
m_ula.interrupt_status = 0x82;
m_ula.interrupt_control = 0;
m_ch00rom_enabled = true;
}
void accomm_state::machine_start()
{
m_shiftlock_led.resolve();
m_capslock_led.resolve();
m_ula.interrupt_status = 0x82;
m_ula.interrupt_control = 0x00;
save_item(STRUCT_MEMBER(m_ula, interrupt_status));
save_item(STRUCT_MEMBER(m_ula, interrupt_control));
save_item(STRUCT_MEMBER(m_ula, rompage));
save_item(STRUCT_MEMBER(m_ula, screen_start));
save_item(STRUCT_MEMBER(m_ula, screen_base));
save_item(STRUCT_MEMBER(m_ula, screen_size));
save_item(STRUCT_MEMBER(m_ula, screen_addr));
save_item(STRUCT_MEMBER(m_ula, screen_dispend));
save_item(STRUCT_MEMBER(m_ula, current_pal));
save_item(STRUCT_MEMBER(m_ula, communication_mode));
save_item(STRUCT_MEMBER(m_ula, screen_mode));
save_item(STRUCT_MEMBER(m_ula, shiftlock_mode));
save_item(STRUCT_MEMBER(m_ula, capslock_mode));
save_item(NAME(m_ch00rom_enabled));
}
void accomm_state::video_start()
{
for( int i = 0; i < 256; i++ ) {
m_map4[i] = ( ( i & 0x10 ) >> 3 ) | ( i & 0x01 );
m_map16[i] = ( ( i & 0x40 ) >> 3 ) | ( ( i & 0x10 ) >> 2 ) | ( ( i & 0x04 ) >> 1 ) | ( i & 0x01 );
}
m_scanline_timer = timer_alloc(FUNC(accomm_state::scanline_interrupt_check), this);
m_scanline_timer->adjust( m_screen->time_until_pos(0), 0, m_screen->scan_period() );
}
void accomm_state::ch00switch_w(offs_t offset, uint8_t data)
{
logerror("ch00switch_w: offset %04x, data %02x\n", offset, data);
if (!machine().side_effects_disabled())
m_ch00rom_enabled = false;
}
inline uint8_t accomm_state::read_vram(uint16_t addr)
{
if ( addr & 0x8000 ) addr -= m_ula.screen_size;
return m_vram[ addr ];
}
inline void accomm_state::plot_pixel(bitmap_ind16 &bitmap, int x, int y, uint32_t color)
{
bitmap.pix(y, x) = (uint16_t)color;
}
uint32_t accomm_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int i;
int x = 0;
int scanline = screen.vpos();
rectangle r = cliprect;
r.sety(scanline, scanline);
/* set up palette */
int pal[16];
switch( m_ula.screen_mode )
{
case 0: case 3: case 4: case 6: case 7: /* 2 colour mode */
pal[0] = m_ula.current_pal[0];
pal[1] = m_ula.current_pal[8];
break;
case 1: case 5: /* 4 colour mode */
pal[0] = m_ula.current_pal[0];
pal[1] = m_ula.current_pal[2];
pal[2] = m_ula.current_pal[8];
pal[3] = m_ula.current_pal[10];
break;
case 2: /* 16 colour mode */
for( i = 0; i < 16; i++ )
pal[i] = m_ula.current_pal[i];
}
/* draw line */
switch( m_ula.screen_mode )
{
case 0:
for( i = 0; i < 80; i++ )
{
uint8_t pattern = read_vram( m_ula.screen_addr + (i << 3) );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>7)& 1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>6)& 1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>5)& 1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>4)& 1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>3)& 1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>2)& 1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>1)& 1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>0)& 1] );
}
m_ula.screen_addr++;
if ( ( scanline & 0x07 ) == 7 )
m_ula.screen_addr += 0x278;
break;
case 1:
for( i = 0; i < 80; i++ )
{
uint8_t pattern = read_vram( m_ula.screen_addr + i * 8 );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>3]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>3]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>2]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>2]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>0]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>0]] );
}
m_ula.screen_addr++;
if ( ( scanline & 0x07 ) == 7 )
m_ula.screen_addr += 0x278;
break;
case 2:
for( i = 0; i < 80; i++ )
{
uint8_t pattern = read_vram( m_ula.screen_addr + i * 8 );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>0]] );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>0]] );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>0]] );
plot_pixel( bitmap, x++, scanline, pal[m_map16[pattern>>0]] );
}
m_ula.screen_addr++;
if ( ( scanline & 0x07 ) == 7 )
m_ula.screen_addr += 0x278;
break;
case 3:
if ( ( scanline > 249 ) || ( scanline % 10 >= 8 ) )
bitmap.fill(7, r );
else
{
for( i = 0; i < 80; i++ )
{
uint8_t pattern = read_vram( m_ula.screen_addr + i * 8 );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>7)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>6)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>5)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>4)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>3)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>2)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>1)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>0)&1] );
}
m_ula.screen_addr++;
}
if ( scanline % 10 == 9 )
m_ula.screen_addr += 0x278;
break;
case 4:
case 7:
for( i = 0; i < 40; i++ )
{
uint8_t pattern = read_vram( m_ula.screen_addr + i * 8 );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>7)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>7)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>6)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>6)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>5)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>5)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>4)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>4)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>3)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>3)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>2)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>2)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>1)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>1)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>0)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>0)&1] );
}
m_ula.screen_addr++;
if ( ( scanline & 0x07 ) == 7 )
m_ula.screen_addr += 0x138;
break;
case 5:
for( i = 0; i < 40; i++ )
{
uint8_t pattern = read_vram( m_ula.screen_addr + i * 8 );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>3]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>3]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>3]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>3]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>2]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>2]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>2]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>2]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>1]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>0]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>0]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>0]] );
plot_pixel( bitmap, x++, scanline, pal[m_map4[pattern>>0]] );
}
m_ula.screen_addr++;
if ( ( scanline & 0x07 ) == 7 )
m_ula.screen_addr += 0x138;
break;
case 6:
if ( ( scanline > 249 ) || ( scanline % 10 >= 8 ) )
bitmap.fill(7, r );
else
{
for( i = 0; i < 40; i++ )
{
uint8_t pattern = read_vram( m_ula.screen_addr + i * 8 );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>7)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>7)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>6)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>6)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>5)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>5)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>4)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>4)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>3)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>3)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>2)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>2)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>1)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>1)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>0)&1] );
plot_pixel( bitmap, x++, scanline, pal[(pattern>>0)&1] );
}
m_ula.screen_addr++;
if ( ( scanline % 10 ) == 7 )
m_ula.screen_addr += 0x138;
}
break;
}
if ( m_ula.screen_addr & 0x8000 )
m_ula.screen_addr -= m_ula.screen_size;
return 0;
}
TIMER_CALLBACK_MEMBER(accomm_state::scanline_interrupt_check)
{
switch (m_screen->vpos())
{
case 99:
interrupt_handler( INT_SET, INT_RTC );
break;
case 249:
case 255:
if ( m_screen->vpos() == m_ula.screen_dispend )
interrupt_handler( INT_SET, INT_DISPLAY_END );
break;
case 311:
m_ula.screen_addr = m_ula.screen_start;
break;
}
}
uint8_t accomm_state::ram_r(offs_t offset)
{
uint8_t data = 0xff;
if (m_ch00rom_enabled && (offset < 0x10000))
{
data = m_maincpu_region->base()[offset];
}
else
{
switch (m_ram->size())
{
case 512 * 1024:
data = m_ram->pointer()[offset & 0x7ffff];
break;
case 1024 * 1024:
data = m_ram->pointer()[offset & 0xfffff];
break;
}
}
return data;
}
void accomm_state::ram_w(offs_t offset, uint8_t data)
{
switch (m_ram->size())
{
case 512 * 1024:
m_ram->pointer()[offset & 0x7ffff] = data;
break;
case 1024 * 1024:
m_ram->pointer()[offset & 0xfffff] = data;
break;
}
}
uint8_t accomm_state::sheila_r(offs_t offset)
{
uint8_t data = 0;
switch ( offset & 0x0f )
{
case 0x00: /* Interrupt status */
data = m_ula.interrupt_status;
m_ula.interrupt_status &= ~0x02;
break;
case 0x01: /* Unknown */
break;
case 0x04: /* Cassette data shift register */
interrupt_handler(INT_CLEAR, INT_RECEIVE_FULL );
data = m_ula.tape_byte;
break;
}
return data;
}
static const int palette_offset[4] = { 0, 4, 5, 1 };
static const uint16_t screen_base[8] = { 0x3000, 0x3000, 0x3000, 0x4000, 0x5800, 0x5800, 0x6000, 0x6000 };
static const int mode_end[8] = { 255, 255, 255 ,249 ,255, 255, 249, 249 };
void accomm_state::sheila_w(offs_t offset, uint8_t data)
{
int i = palette_offset[(( offset >> 1 ) & 0x03)];
switch( offset & 0x0f )
{
case 0x00: /* Interrupt control */
m_ula.interrupt_control = data;
break;
case 0x01: /* Unknown */
break;
case 0x02: /* Screen start address #1 */
m_ula.screen_start = ( m_ula.screen_start & 0x7e00 ) | ( ( data & 0xe0 ) << 1 );
break;
case 0x03: /* Screen start address #2 */
m_ula.screen_start = ( m_ula.screen_start & 0x1ff ) | ( ( data & 0x3f ) << 9 );
break;
case 0x04: /* Cassette data shift register */
break;
case 0x05: /* Interrupt clear and paging */
/* rom page requests are honoured when currently bank 0-7 or 12-15 is switched in,
* or when 8-11 is currently switched in only switching to bank 8-15 is allowed.
*
* Rompages 10 and 11 both select the Basic ROM.
* Rompages 8 and 9 both select the keyboard.
*/
if ( ( ( m_ula.rompage & 0x0C ) != 0x08 ) || ( data & 0x08 ) )
{
m_ula.rompage = data & 0x0f;
}
if ( data & 0x10 )
{
interrupt_handler( INT_CLEAR, INT_DISPLAY_END );
}
if ( data & 0x20 )
{
interrupt_handler( INT_CLEAR, INT_RTC );
}
if ( data & 0x40 )
{
interrupt_handler( INT_CLEAR, INT_HIGH_TONE );
}
if ( data & 0x80 )
{
}
break;
case 0x06: /* Counter divider */
if ( m_ula.communication_mode == 0x01)
{
/* GUESS
* the Electron Advanced Users manual says this is the correct algorithm
* but the divider is wrong(?), says 16 but results in high pitch,
* 32 is more close
*/
m_beeper->set_clock( 1000000 / ( 32 * ( data + 1 ) ) );
}
break;
case 0x07: /* Misc. */
m_ula.communication_mode = ( data >> 1 ) & 0x03;
switch( m_ula.communication_mode )
{
case 0x00: /* cassette input */
m_beeper->set_state( 0 );
break;
case 0x01: /* sound generation */
m_beeper->set_state( 1 );
break;
case 0x02: /* cassette output */
m_beeper->set_state( 0 );
break;
case 0x03: /* not used */
m_beeper->set_state( 0 );
break;
}
m_ula.screen_mode = ( data >> 3 ) & 0x07;
m_ula.screen_base = screen_base[ m_ula.screen_mode ];
m_ula.screen_size = 0x8000 - m_ula.screen_base;
m_ula.screen_dispend = mode_end[ m_ula.screen_mode ];
m_ula.shiftlock_mode = !BIT(data, 6);
m_shiftlock_led = m_ula.shiftlock_mode;
m_ula.capslock_mode = BIT(data, 7);
m_capslock_led = m_ula.capslock_mode;
break;
case 0x08: case 0x0a: case 0x0c: case 0x0e:
/* colour palette */
m_ula.current_pal[i+10] = (m_ula.current_pal[i+10] & 0x01) | (((data & 0x80) >> 5) | ((data & 0x08) >> 2));
m_ula.current_pal[i+8] = (m_ula.current_pal[i+8] & 0x01) | (((data & 0x40) >> 4) | ((data & 0x04) >> 1));
m_ula.current_pal[i+2] = (m_ula.current_pal[i+2] & 0x03) | ((data & 0x20) >> 3);
m_ula.current_pal[i] = (m_ula.current_pal[
i] & 0x03) | ((data & 0x10) >> 2);
break;
case 0x09: case 0x0b: case 0x0d: case 0x0f:
/* colour palette */
m_ula.current_pal[i+10] = (m_ula.current_pal[i+10] & 0x06) | ((data & 0x08) >> 3);
m_ula.current_pal[i+8] = (m_ula.current_pal[i+8] & 0x06) | ((data & 0x04) >> 2);
m_ula.current_pal[i+2] = (m_ula.current_pal[i+2] & 0x04) | (((data & 0x20) >> 4) | ((data & 0x02) >> 1));
m_ula.current_pal[i] = (m_ula.current_pal[i] & 0x04) | (((data & 0x10) >> 3) | ((data & 0x01)));
break;
}
}
void accomm_state::interrupt_handler(int mode, int interrupt)
{
if ( mode == INT_SET )
{
m_ula.interrupt_status |= interrupt;
}
else
{
m_ula.interrupt_status &= ~interrupt;
}
if ( m_ula.interrupt_status & m_ula.interrupt_control & ~0x83 )
{
m_ula.interrupt_status |= 0x01;
m_maincpu->set_input_line(0, ASSERT_LINE );
}
else
{
m_ula.interrupt_status &= ~0x01;
m_maincpu->set_input_line(0, CLEAR_LINE );
}
}
void accomm_state::main_map(address_map &map)
{
map(0x000000, 0x1fffff).rw(FUNC(accomm_state::ram_r), FUNC(accomm_state::ram_w)); /* System RAM */
map(0x200000, 0x3fffff).noprw(); /* External expansion RAM */
map(0x400000, 0x400001).rw(m_acia, FUNC(acia6850_device::read), FUNC(acia6850_device::write)); /* MODEM */
map(0x410000, 0x410000).ram(); /* Econet ID */
map(0x420000, 0x42000f).m(m_via, FUNC(via6522_device::map)); /* 6522 VIA (printer etc) */
map(0x430000, 0x430003).rw(m_scn2641, FUNC(scn2641_device::read), FUNC(scn2641_device::write)); /* 2641 ACIA (RS423) */
map(0x440000, 0x44ffff).w(FUNC(accomm_state::ch00switch_w)); /* CH00SWITCH */
map(0x450000, 0x457fff).ram().share("vram"); /* Video RAM */
map(0x458000, 0x459fff).r(FUNC(accomm_state::read_keyboard1)); /* Video ULA */
map(0x45a000, 0x45bfff).r(FUNC(accomm_state::read_keyboard2)); /* Video ULA */
map(0x45fe00, 0x45feff).rw(FUNC(accomm_state::sheila_r), FUNC(accomm_state::sheila_w)); /* Video ULA */
map(0x460000, 0x467fff).ram().share("nvram"); /* CMOS RAM */
map(0x470000, 0x47001f).rw(m_adlc, FUNC(mc6854_device::read), FUNC(mc6854_device::write)); /* 68B54 (Econet) */
map(0x480000, 0x7fffff).noprw(); /* Reserved */
map(0x800000, 0xbfffff).noprw(); /* External expansion IO */
map(0xc00000, 0xf7ffff).rom().region("ext", 0); /* External expansion ROM */
map(0xf80000, 0xf9ffff).rom().region("maincpu", 0x060000); /* Empty (ROM Slot 3) */
map(0xfa0000, 0xfbffff).rom().region("maincpu", 0x040000); /* ROM bank 4 (ROM Slot 2) */
map(0xfc0000, 0xfcffff).rom().region("maincpu", 0x030000); /* ROM bank 3 (ROM Slot 1) */
map(0xfd0000, 0xfdffff).rom().region("maincpu", 0x020000); /* ROM bank 2 (ROM Slot 1) */
map(0xfe0000, 0xfeffff).rom().region("maincpu", 0x000000); /* ROM bank 0 (ROM Slot 0) */
map(0xff0000, 0xffffff).rom().region("maincpu", 0x010000); /* ROM bank 1 (ROM Slot 0) */
}
void accomm_state::saa5240_map(address_map &map)
{
map.global_mask(0x07ff);
map(0x0000, 0x07ff).ram();
}
INPUT_CHANGED_MEMBER(accomm_state::trigger_reset)
{
m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE);
}
static INPUT_PORTS_START( accomm )
PORT_START("LINE1.0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('_') PORT_CHAR('@')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
PORT_START("LINE1.1")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
PORT_START("LINE1.2")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
PORT_START("LINE1.3")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR(UCHAR_MAMEKEY(TILDE)) PORT_NAME("Function")
PORT_START("LINE1.4")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_START("LINE1.5")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
PORT_START("LINE1.6")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT)) PORT_NAME("Shift Lock")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) PORT_NAME("Tab")
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
PORT_START("LINE1.7")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
PORT_START("LINE1.8")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(EQUALS_PAD))
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
PORT_START("LINE1.9")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(BACKSPACE)) PORT_NAME("Del CE")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_END) PORT_CHAR(UCHAR_MAMEKEY(END)) PORT_NAME("Copy EE")
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(10) PORT_NAME(u8"\u2193 +") // U+2193 = ↓
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_HOME) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_NAME("Home %")
PORT_START("LINE1.10")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD)) PORT_NAME("Keypad .")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
PORT_START("LINE1.11")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('\\') PORT_CHAR('|')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F9) PORT_CHAR(UCHAR_MAMEKEY(F9)) PORT_NAME("Phone")
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(UCHAR_MAMEKEY(ESC)) PORT_NAME("Escape")
PORT_START("LINE1.12")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4))
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2))
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5))
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1))
PORT_START("LINE1.13")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_START("LINE2.0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('^') PORT_CHAR('~')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+')
PORT_START("LINE2.1")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(0xa3) // £
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
PORT_START("LINE2.2")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
PORT_START("LINE2.3")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_NAME("Help")
PORT_START("LINE2.4")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) PORT_NAME("Ctrl")
PORT_START("LINE2.5")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
PORT_START("LINE2.6")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
PORT_START("LINE2.7")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
PORT_START("LINE2.8")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_START("LINE2.9")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_NAME(u8"\u2192 -") // U+2192 = →
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_INSERT) PORT_CHAR(UCHAR_MAMEKEY(INSERT)) PORT_NAME(u8"Insert ÷")
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_NAME(u8"\u2191 ×") // U+2191 = ↑
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_NAME(u8"\u2190 AC") // U+2190 = ←
PORT_START("LINE2.10")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
PORT_START("LINE2.11")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F10) PORT_CHAR(UCHAR_MAMEKEY(F10)) PORT_NAME("Comp")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F11) PORT_CHAR(UCHAR_MAMEKEY(F11)) PORT_NAME("Calc")
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_START("LINE2.12")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6))
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8))
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7))
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3))
PORT_START("LINE2.13")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_UNUSED)
PORT_START("STOP")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F12) PORT_CHAR(UCHAR_MAMEKEY(F12)) PORT_NAME("Stop") PORT_CHANGED_MEMBER(DEVICE_SELF, accomm_state, trigger_reset, 0)
INPUT_PORTS_END
void accomm_state::accomm(machine_config &config)
{
G65816(config, m_maincpu, 16_MHz_XTAL / 8);
m_maincpu->set_addrmap(AS_PROGRAM, &accomm_state::main_map);
INPUT_MERGER_ANY_HIGH(config, m_irqs).output_handler().set_inputline(m_maincpu, G65816_LINE_IRQ);
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_raw(16_MHz_XTAL, 1024, 0, 640, 312, 0, 256);
m_screen->set_screen_update(FUNC(accomm_state::screen_update));
m_screen->set_video_attributes(VIDEO_UPDATE_SCANLINE);
m_screen->set_palette("palette");
PALETTE(config, "palette", FUNC(accomm_state::accomm_palette), 16);
config.set_default_layout(layout_accomm);
/* internal ram */
RAM(config, RAM_TAG).set_default_size("512K").set_extra_options("1M");
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
/* sound */
SPEAKER(config, "mono").front_center();
BEEP(config, m_beeper, 300).add_route(ALL_OUTPUTS, "mono", 1.00);
/* rtc */
PCF8573(config, m_rtc, 32.768_kHz_XTAL);
m_rtc->comp_cb().set(m_via, FUNC(via6522_device::write_cb1));
/* teletext */
SAA5240A(config, m_cct, 6_MHz_XTAL);
m_cct->set_addrmap(0, &accomm_state::saa5240_map);
/* via */
MOS6522(config, m_via, 16_MHz_XTAL / 16);
m_via->writepa_handler().set("cent_data_out", FUNC(output_latch_device::write));
m_via->ca2_handler().set("centronics", FUNC(centronics_device::write_strobe));
m_via->readpb_handler().set([this] () { return uint8_t(m_rtc->sda_r() & m_cct->read_sda()); });
m_via->writepb_handler().set(m_rtc, FUNC(pcf8573_device::sda_w)).bit(1).invert();
m_via->writepb_handler().append(m_rtc, FUNC(pcf8573_device::scl_w)).bit(2).invert();
m_via->writepb_handler().append(m_cct, FUNC(saa5240a_device::write_sda)).bit(1).invert();
m_via->writepb_handler().append(m_cct, FUNC(saa5240a_device::write_scl)).bit(2).invert();
m_via->irq_handler().set(m_irqs, FUNC(input_merger_device::in_w<0>));
/* rs423 */
SCN2641(config, m_scn2641, 3.6864_MHz_XTAL);
m_scn2641->txd_handler().set("rs423", FUNC(rs232_port_device::write_txd));
m_scn2641->rts_handler().set("rs423", FUNC(rs232_port_device::write_rts));
m_scn2641->intr_handler().set(m_irqs, FUNC(input_merger_device::in_w<1>));
rs232_port_device &rs423(RS232_PORT(config, "rs423", default_rs232_devices, nullptr));
rs423.rxd_handler().set(m_scn2641, FUNC(scn2641_device::rxd_w));
rs423.dcd_handler().set(m_scn2641, FUNC(scn2641_device::dcd_w));
rs423.cts_handler().set(m_scn2641, FUNC(scn2641_device::cts_w));
/* modem */
ACIA6850(config, m_acia, 0);
m_acia->txd_handler().set("modem", FUNC(rs232_port_device::write_txd));
m_acia->rts_handler().set("modem", FUNC(rs232_port_device::write_rts));
m_acia->irq_handler().set(m_irqs, FUNC(input_merger_device::in_w<2>));
rs232_port_device &modem(RS232_PORT(config, "modem", default_rs232_devices, "null_modem"));
modem.rxd_handler().set(m_acia, FUNC(acia6850_device::write_rxd));
modem.dcd_handler().set(m_acia, FUNC(acia6850_device::write_dcd));
modem.cts_handler().set(m_acia, FUNC(acia6850_device::write_cts));
CLOCK(config, m_acia_clock, 16_MHz_XTAL / 13);
m_acia_clock->signal_handler().set(m_acia, FUNC(acia6850_device::write_txc));
m_acia_clock->signal_handler().append(m_acia, FUNC(acia6850_device::write_rxc));
PCD3311(config, m_dtmf, 3.57864_MHz_XTAL).add_route(ALL_OUTPUTS, "mono", 0.25); // PCD3312
/* econet */
MC6854(config, m_adlc);
m_adlc->out_txd_cb().set("econet", FUNC(econet_device::host_data_w));
m_adlc->out_irq_cb().set_inputline(m_maincpu, G65816_LINE_NMI);
econet_device &econet(ECONET(config, "econet", 0));
econet.clk_wr_callback().set(m_adlc, FUNC(mc6854_device::txc_w));
econet.clk_wr_callback().append(m_adlc, FUNC(mc6854_device::rxc_w));
econet.data_wr_callback().set(m_adlc, FUNC(mc6854_device::set_rx));
ECONET_SLOT(config, "econet254", "econet", econet_devices).set_slot(254);
/* printer */
centronics_device ¢ronics(CENTRONICS(config, "centronics", centronics_devices, "printer"));
centronics.ack_handler().set(m_via, FUNC(via6522_device::write_ca1));
output_latch_device ¢_data_out(OUTPUT_LATCH(config, "cent_data_out"));
centronics.set_output_latch(cent_data_out);
}
void accomm_state::accommi(machine_config &config)
{
accomm(config);
/* teletext */
SAA5240B(config.replace(), m_cct, 6_MHz_XTAL);
m_cct->set_addrmap(0, &accomm_state::saa5240_map);
}
ROM_START(accomm)