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Minitel 2 driver : 24C02 I2C EEPROM support. (#9232)

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* minitel_2_rpic.cpp: Fix O and Q keys.
* minitel_2_rpic.cpp: 24C02 I2C EEPROM support implemented. Password and others internals settings are now saved in the nvram folder.
* minitel_2_rpic.cpp: move the "Fonction" key from F9 to Alt-Gr.
* minitel_2_rpic.cpp: Fix the control register bits assignations. The previous definitions was definitively wrong (checked against the real hardware).
This commit is contained in:
Jean-François DEL NERO 2022-02-01 13:21:19 +01:00 committed by GitHub
parent 42b7a90d57
commit 226605c8ec
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1 changed files with 25 additions and 12 deletions
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37
src/mame/drivers/minitel_2_rpic.cpp
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@ -20,12 +20,12 @@
- Main MCU
- Video output
- Keyboard
- 24C02 EPROM
What is not yet implemented :
- Modem and sound output.
- The rear serial port.
- Parameters I2C 24C02 EEPROM.
- Screen should go blank when switched off
The original firmware and the experimental demo rom are currently both working.
@ -40,8 +40,8 @@
F6 -> Guide
F7 -> Sommaire
F8 -> Connexion/Fin
F9 -> Fonction
F10-> ON / OFF
Alt Gr -> Fonction
With the official ROM you need to press F10 to switch on the CRT.
@ -50,6 +50,7 @@
#include "emu.h"
#include "cpu/mcs51/mcs51.h"
#include "machine/i2cmem.h"
#include "machine/timer.h"
#include "video/ef9345.h"
@ -62,11 +63,11 @@
// IO expander latch usage definitions
enum
{
CTRL_REG_DTMF = 0x02,
CTRL_REG_MCBC = 0x04,
CTRL_REG_OPTO = 0x08,
CTRL_REG_RELAY = 0x10,
CTRL_REG_CRTON = 0x20
CTRL_REG_MCBC = 0x01,
CTRL_REG_DTMF = 0x02,
CTRL_REG_CRTON = 0x08,
CTRL_REG_OPTO = 0x10,
CTRL_REG_RELAY = 0x20
};
// 80C32 Port IO usage definitions
@ -90,6 +91,7 @@ public:
, m_maincpu(*this, "maincpu")
, m_ts9347(*this, "ts9347")
, m_palette(*this, "palette")
, m_i2cmem(*this, "i2cmem")
, m_io_kbd(*this, "Y%u", 0)
{
}
@ -100,6 +102,7 @@ private:
required_device<i80c32_device> m_maincpu;
required_device<ts9347_device> m_ts9347;
required_device<palette_device> m_palette;
required_device<i2cmem_device> m_i2cmem;
TIMER_DEVICE_CALLBACK_MEMBER(minitel_scanline);
@ -108,7 +111,7 @@ private:
uint8_t port1_r();
uint8_t port3_r();
void dev_crtl_reg_w(offs_t offset, uint8_t data);
void dev_ctrl_reg_w(offs_t offset, uint8_t data);
uint8_t dev_keyb_ser_r(offs_t offset);
uint8_t ts9347_io_r(offs_t offset);
@ -182,11 +185,13 @@ void minitel_state::port1_w(uint8_t data)
if( (port1 ^ data) & PORT_1_SCL )
{
LOG("PORT_1_SCL : %d \n", data & PORT_1_SCL );
m_i2cmem->write_scl( (data & PORT_1_SCL) ? 1 : 0);
}
if( (port1 ^ data) & PORT_1_SDA )
{
LOG("PORT_1_SDA : %d \n", data & PORT_1_SDA );
m_i2cmem->write_sda( (data & PORT_1_SDA) ? 1 : 0);
}
port1 = data;
@ -200,8 +205,14 @@ void minitel_state::port3_w(uint8_t data)
uint8_t minitel_state::port1_r()
{
uint8_t data;
LOG("port_r: read %02X from PORT1 - Keyboard -> %x\n", port1,((keyboard_x_row_reg>>7)&1));
return ( (port1&0xFE) | ((keyboard_x_row_reg>>7)&1) ) ;
data = ( ( (port1 & (0xFE & ~PORT_1_SDA) ) | ( (keyboard_x_row_reg>>7)&1) ) );
data |= (m_i2cmem->read_sda() ? PORT_1_SDA : 0);
return data;
}
uint8_t minitel_state::port3_r()
@ -210,7 +221,7 @@ uint8_t minitel_state::port3_r()
return port3;
}
void minitel_state::dev_crtl_reg_w(offs_t offset, uint8_t data)
void minitel_state::dev_ctrl_reg_w(offs_t offset, uint8_t data)
{
if( last_ctrl_reg != data)
{
@ -288,7 +299,7 @@ void minitel_state::mem_prg(address_map &map)
void minitel_state::mem_io(address_map &map)
{
map(0x2000, 0x3fff).rw(FUNC(minitel_state::dev_keyb_ser_r), FUNC(minitel_state::dev_crtl_reg_w));
map(0x2000, 0x3fff).rw(FUNC(minitel_state::dev_keyb_ser_r), FUNC(minitel_state::dev_ctrl_reg_w));
/* ts9347 */
map(0x4000, 0x5ffF).rw(FUNC(minitel_state::ts9347_io_r), FUNC(minitel_state::ts9347_io_w));
}
@ -311,7 +322,7 @@ static INPUT_PORTS_START( minitel2 )
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Connexion/Fin") PORT_CODE(KEYCODE_F8)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Fonction") PORT_CODE(KEYCODE_F9)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Fonction") PORT_CODE(KEYCODE_RALT)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RSHIFT) // Right maj
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) // Left maj
@ -412,6 +423,8 @@ void minitel_state::minitel2(machine_config &config)
m_maincpu->port_in_cb<3>().set(FUNC(minitel_state::port3_r));
m_maincpu->port_out_cb<3>().set(FUNC(minitel_state::port3_w));
I2C_24C02(config, m_i2cmem);
TS9347(config, m_ts9347, 0);
m_ts9347->set_palette_tag(m_palette);