// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/***************************************************************************
Micronics 1000
06/2010 (Sandro Ronco)
- ROM/RAM banking
- keypad input
- Periodic IRQ (RTC-146818)
- NVRAM
TODO:
- IR I/O port
- LCD contrast and backlight
NOTE:
The display shows "TESTING..." for about 2 min before showing the information screen
More info:
http://www.philpem.me.uk/elec/micronic/
http://members.lycos.co.uk/leeedavison/z80/micronic/index.html
http://reocities.com/SiliconValley/Port/8052/
****************************************************************************/
/*
KBD_R: EQU 00h ; key matrix read port
KBD_W: EQU 02h ; key matrix write port
LCD_D: EQU 03h ; LCD data port
Port_04: EQU 04h ; IRQ hardware mask
; .... ...0 = keyboard interrupt enable
; .... ..0. = RTC interrupt enable
; .... .0.. = IR port interrupt enable
; .... 0... = main battery interrupt enable
; ...0 .... = backup battery interrupt enable
Port_05: EQU 05h ; interrupt flag byte
; .... ...1 = keyboard interrupt
; .... ..1. = RTC interrupt
; .... .1.. = IR port interrupt ??
; .... 1... = main battery interrupt
; ...1 .... = backup battery interrupt
Port_07: EQU 07h ;
; .... ...x
; .... ..x.
RTC_A: EQU 08h ; RTC address port
LCD_C: EQU 23h ; LCD command port
RTC_D: EQU 28h ; RTC data port
Port_2A: EQU 2Ah ;
; .... ...x
; .... ..x.
; ...x ....
; ..x. ....
Port_2B: EQU 2Bh ; .... xxxx = beep tone
; .... 0000 = off
; .... 0001 = 0.25mS = 4.000kHz
; .... 0010 = 0.50mS = 2.000kHz
; .... 0011 = 0.75mS = 1.333kHz
; .... 0100 = 1.00mS = 1.000kHz
; .... 0101 = 1.25mS = 0.800kHz
; .... 0110 = 1.50mS = 0.667kHz
; .... 0111 = 1.75mS = 0.571kHz
; .... 1000 = 2.00mS = 0.500kHz
; .... 1001 = 2.25mS = 0.444kHz
; .... 1010 = 2.50mS = 0.400kHz
; .... 1011 = 2.75mS = 0.364kHz
; .... 1100 = 3.00mS = 0.333kHz
; .... 1101 = 3.25mS = 0.308kHz
; .... 1110 = 3.50mS = 0.286kHz
; .... 1111 = 3.75mS = 0.267kHz
Port_2C: EQU 2Ch ;
; .... ...x V24_ADAPTER IR port clock
; .... ..x. V24_ADAPTER IR port data
; ...1 .... = backlight on
; ..xx ..xx
Port_2D: EQU 2Dh ;
; .... ...x
; .... ..x.
Port_33: EQU 33h ;
Port_46: EQU 46h ; LCD contrast port
MEM_P: EQU 47h ; memory page
Port_48: EQU 48h ;
; .... ...x
; .... ..x.
Port_49: EQU 49h ;
; .... ...x
; .... ..x.
Port_4A: EQU 4Ah ; end IR port output
; .... ...x
; .... ..x.
; ...x ....
; ..x. ....
; .x.. ....
; x... ....
Port_4B: EQU 4Bh ; IR port status byte
; .... ...1 RX buffer full
; ...x ....
; .x.. ....
; 1... .... TX buffer empty
Port_4C: EQU 4Ch ;
; .... ...x
; x... ....
Port_4D: EQU 4Dh ; IR transmit byte
Port_4E: EQU 4Eh ; IR receive byte
Port_4F: EQU 4Fh ;
; .... ...x
; .... ..x.
; .... .x..
; .... x...
; ...x ....
*/
#include "emu.h"
#include "includes/micronic.h"
#include "rendlay.h"
#include "screen.h"
#include "speaker.h"
READ8_MEMBER( micronic_state::keypad_r )
{
uint8_t data = 0;
for (uint8_t bit = 0; bit < 8; bit++)
{
if (m_kp_matrix & (1 << bit))
{
data |= m_bit0->read() & (0x01 << bit) ? 0x01 : 0x00;
data |= m_bit1->read() & (0x01 << bit) ? 0x02 : 0x00;
data |= m_bit2->read() & (0x01 << bit) ? 0x04 : 0x00;
data |= m_bit3->read() & (0x01 << bit) ? 0x08 : 0x00;
data |= m_bit4->read() & (0x01 << bit) ? 0x10 : 0x00;
data |= m_bit5->read() & (0x01 << bit) ? 0x20 : 0x00;
}
}
return data;
}
READ8_MEMBER( micronic_state::status_flag_r )
{
return m_status_flag;
}
WRITE8_MEMBER( micronic_state::status_flag_w )
{
m_status_flag = data;
}
WRITE8_MEMBER( micronic_state::kp_matrix_w )
{
m_kp_matrix = data;
}
WRITE8_MEMBER( micronic_state::beep_w )
{
uint16_t frequency[16] =
{
0, 4000, 2000, 1333, 1000, 800, 667, 571,
500, 444, 400, 364, 333, 308, 286, 267
};
m_beep->set_clock(frequency[data & 0x0f]);
m_beep->set_state((data & 0x0f) ? 1 : 0);
}
READ8_MEMBER( micronic_state::irq_flag_r )
{
return (m_backbattery->read()<<4) | (m_mainbattery->read()<<3) | (keypad_r(space, offset) ? 0 : 1);
}
WRITE8_MEMBER( micronic_state::bank_select_w )
{
if (data < 2)
{
m_bank1->set_entry(data);
m_maincpu->space(AS_PROGRAM).unmap_write(0x0000, 0x7fff);
}
else
{
m_bank1->set_entry((data <= m_banks_num) ? data : m_banks_num);
m_maincpu->space(AS_PROGRAM).install_write_bank(0x0000, 0x7fff, "bank1");
}
}
WRITE8_MEMBER( micronic_state::lcd_contrast_w )
{
m_lcd_contrast = data;
}
WRITE8_MEMBER( micronic_state::port_2c_w )
{
m_lcd_backlight = BIT(data, 4);
}
/***************************************************************************
RTC-146818
***************************************************************************/
WRITE8_MEMBER( micronic_state::rtc_address_w )
{
m_rtc->write(space, 0, data);
}
READ8_MEMBER( micronic_state::rtc_data_r )
{
return m_rtc->read(space, 1);
}
WRITE8_MEMBER( micronic_state::rtc_data_w )
{
m_rtc->write(space, 1, data);
}
/***************************************************************************
Machine
***************************************************************************/
void micronic_state::micronic_mem(address_map &map)
{
map(0x0000, 0x7fff).bankrw("bank1");
map(0x8000, 0xffff).ram().share("ram_base");
}
void micronic_state::micronic_io(address_map &map)
{
map.global_mask(0xff);
/* keypad */
map(0x00, 0x00).r(this, FUNC(micronic_state::keypad_r));
map(0x02, 0x02).w(this, FUNC(micronic_state::kp_matrix_w));
/* hd61830 */
map(0x03, 0x03).rw(m_lcdc, FUNC(hd61830_device::data_r), FUNC(hd61830_device::data_w));
map(0x23, 0x23).rw(m_lcdc, FUNC(hd61830_device::status_r), FUNC(hd61830_device::control_w));
/* rtc-146818 */
map(0x08, 0x08).w(this, FUNC(micronic_state::rtc_address_w));
map(0x28, 0x28).rw(this, FUNC(micronic_state::rtc_data_r), FUNC(micronic_state::rtc_data_w));
/* sound */
map(0x2b, 0x2b).w(this, FUNC(micronic_state::beep_w));
/* basic machine */
map(0x05, 0x05).r(this, FUNC(micronic_state::irq_flag_r));
map(0x2c, 0x2c).w(this, FUNC(micronic_state::port_2c_w));
map(0x47, 0x47).w(this, FUNC(micronic_state::bank_select_w));
map(0x46, 0x46).w(this, FUNC(micronic_state::lcd_contrast_w));
map(0x48, 0x48).w(this, FUNC(micronic_state::status_flag_w));
map(0x49, 0x49).r(this, FUNC(micronic_state::status_flag_r));
}
/* Input ports */
static INPUT_PORTS_START( micronic )
PORT_START("MAINBATTERY")
PORT_CONFNAME( 0x01, 0x01, "Main Battery Status" )
PORT_CONFSETTING( 0x01, DEF_STR( Normal ) )
PORT_CONFSETTING( 0x00, "Low Battery" )
PORT_START("BACKBATTERY")
PORT_CONFNAME( 0x01, 0x01, "Backup Battery Status" )
PORT_CONFSETTING( 0x01, DEF_STR( Normal ) )
PORT_CONFSETTING( 0x00, "Low Battery" )
PORT_START("BIT0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("MODE") PORT_CODE(KEYCODE_EQUALS)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("A (") PORT_CODE(KEYCODE_A)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("B )") PORT_CODE(KEYCODE_B)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("2nd") PORT_CODE(KEYCODE_LSHIFT)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("U 1") PORT_CODE(KEYCODE_1)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("BACKSPACE") PORT_CODE(KEYCODE_BACKSPACE)
PORT_START("BIT1")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C") PORT_CODE(KEYCODE_C)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("D DEL") PORT_CODE(KEYCODE_D)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("E #") PORT_CODE(KEYCODE_E)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("F &") PORT_CODE(KEYCODE_F)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("V 2") PORT_CODE(KEYCODE_2)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("SPACE 0") PORT_CODE(KEYCODE_0)
PORT_START("BIT2")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("G +") PORT_CODE(KEYCODE_G)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("H /") PORT_CODE(KEYCODE_H)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("I ,") PORT_CODE(KEYCODE_I)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("J ?") PORT_CODE(KEYCODE_J)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("W 3") PORT_CODE(KEYCODE_3)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("NO") PORT_CODE(KEYCODE_PGUP)
PORT_START("BIT3")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("K -") PORT_CODE(KEYCODE_K)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("L *") PORT_CODE(KEYCODE_L)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("M .") PORT_CODE(KEYCODE_M)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("N Z") PORT_CODE(KEYCODE_Z)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("YES") PORT_CODE(KEYCODE_PGDN)
PORT_START("BIT4")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("O 7") PORT_CODE(KEYCODE_7)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("P 8") PORT_CODE(KEYCODE_8)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Q 9") PORT_CODE(KEYCODE_9)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("DEPT") PORT_CODE(KEYCODE_R)
PORT_START("BIT5")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("R 4") PORT_CODE(KEYCODE_4)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("S 5") PORT_CODE(KEYCODE_5)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("T 6") PORT_CODE(KEYCODE_6)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("END") PORT_CODE(KEYCODE_END)
INPUT_PORTS_END
void micronic_state::nvram_init(nvram_device &nvram, void *data, size_t size)
{
m_status_flag = 0;
}
PALETTE_INIT_MEMBER(micronic_state, micronic)
{
palette.set_pen_color(0, rgb_t(138, 146, 148));
palette.set_pen_color(1, rgb_t(92, 83, 88));
}
void micronic_state::machine_start()
{
/* ROM banks */
m_bank1->configure_entries(0x00, 0x02, memregion(Z80_TAG)->base(), 0x10000);
/* RAM banks */
m_banks_num = (m_ram->size() >> 15) + 1;
m_bank1->configure_entries(0x02, m_banks_num - 1, m_ram->pointer(), 0x8000);
m_nvram1->set_base(m_ram_base, 0x8000);
m_nvram2->set_base(m_ram->pointer(), m_ram->size());
/* register for state saving */
save_item(NAME(m_banks_num));
save_item(NAME(m_kp_matrix));
save_item(NAME(m_lcd_contrast));
save_item(NAME(m_lcd_backlight));
save_item(NAME(m_status_flag));
// TODO: restore RAM bank at state load...
}
void micronic_state::machine_reset()
{
m_bank1->set_entry(0);
m_maincpu->space(AS_PROGRAM).unmap_write(0x0000, 0x7fff);
}
WRITE_LINE_MEMBER( micronic_state::mc146818_irq )
{
m_maincpu->set_input_line(0, !state ? HOLD_LINE : CLEAR_LINE);
}
MACHINE_CONFIG_START(micronic_state::micronic)
/* basic machine hardware */
MCFG_DEVICE_ADD(Z80_TAG, Z80, XTAL(3'579'545))
MCFG_DEVICE_PROGRAM_MAP(micronic_mem)
MCFG_DEVICE_IO_MAP(micronic_io)
/* video hardware */
MCFG_SCREEN_ADD(SCREEN_TAG, LCD)
MCFG_SCREEN_REFRESH_RATE(80)
MCFG_SCREEN_UPDATE_DEVICE(HD61830_TAG, hd61830_device, screen_update)
MCFG_SCREEN_SIZE(120, 64) //6x20, 8x8
MCFG_SCREEN_VISIBLE_AREA(0, 120-1, 0, 64-1)
MCFG_SCREEN_PALETTE("palette")
MCFG_DEFAULT_LAYOUT(layout_lcd)
MCFG_PALETTE_ADD("palette", 2)
MCFG_PALETTE_INIT_OWNER(micronic_state, micronic)
MCFG_DEVICE_ADD(HD61830_TAG, HD61830, XTAL(4'915'200)/2/2)
/* sound hardware */
SPEAKER(config, "mono").front_center();
MCFG_DEVICE_ADD( "beeper", BEEP, 0 )
MCFG_SOUND_ROUTE( ALL_OUTPUTS, "mono", 1.00 )
/* ram banks */
MCFG_RAM_ADD(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("224K")
MCFG_NVRAM_ADD_CUSTOM_DRIVER("nvram1", micronic_state, nvram_init) // base ram
MCFG_NVRAM_ADD_CUSTOM_DRIVER("nvram2", micronic_state, nvram_init) // additional ram banks
MCFG_MC146818_ADD( MC146818_TAG, XTAL(32'768) )
MCFG_MC146818_IRQ_HANDLER(WRITELINE(*this, micronic_state, mc146818_irq))
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( micronic )
ROM_REGION( 0x18000, Z80_TAG, 0 )
ROM_SYSTEM_BIOS(0, "v228", "Micronic 1000")
ROMX_LOAD( "micron1.bin", 0x0000, 0x8000, CRC(5632c8b7) SHA1(d1c9cf691848e9125f9ea352e4ffa41c288f3e29), ROM_BIOS(1))
ROMX_LOAD( "micron2.bin", 0x10000, 0x8000, CRC(dc8e7341) SHA1(927dddb3914a50bb051256d126a047a29eff7c65), ROM_BIOS(1))
ROM_SYSTEM_BIOS(1, "test", "Micronic 1000 LCD monitor")
ROMX_LOAD( "monitor2.bin", 0x0000, 0x8000, CRC(c6ae2bbf) SHA1(1f2e3a3d4720a8e1bb38b37f4ab9e0e32676d030), ROM_BIOS(2))
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 198?, micronic, 0, 0, micronic, micronic, micronic_state, empty_init, "Victor Micronic", "Micronic 1000", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )