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4enlinea, k7_olym: Add I2C EEPROMs (nw)

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This commit is contained in:
AJR 2019-06-04 15:58:11 -04:00
parent 6792672fd0
commit e736ed9f05
1 changed files with 57 additions and 8 deletions
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65
src/mame/drivers/4enlinea.cpp
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@ -190,6 +190,7 @@
#include "bus/isa/cga.h"
#include "bus/isa/isa.h"
#include "cpu/z80/z80.h"
#include "machine/i2cmem.h"
#include "machine/nvram.h"
#include "sound/ay8910.h"
#include "video/cgapal.h"
@ -212,7 +213,8 @@ public:
_4enlinea_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_ay(*this, "aysnd"),
m_maincpu(*this, "maincpu")
m_maincpu(*this, "maincpu"),
m_eeprom(*this, "eeprom")
{ }
void _4enlinea(machine_config &config);
@ -229,6 +231,15 @@ private:
INTERRUPT_GEN_MEMBER(_4enlinea_irq);
INTERRUPT_GEN_MEMBER(_4enlinea_audio_irq);
uint8_t eeprom_data_r();
void eeprom_data_w(uint8_t data);
void eeprom_control_w(uint8_t data);
void eeprom_clock_w(uint8_t data);
uint8_t k7_in_r();
void k7_out0_w(uint8_t data);
void k7_out1_w(uint8_t data);
uint8_t m_irq_count;
uint8_t m_serial_flags;
uint8_t m_serial_data[2];
@ -236,9 +247,9 @@ private:
virtual void machine_start() override;
virtual void machine_reset() override;
required_device<cpu_device> m_maincpu;
required_device<i2cmem_device> m_eeprom;
void audio_map(address_map &map);
void audio_portmap(address_map &map);
void main_map(address_map &map);
void main_portmap(address_map &map);
@ -391,6 +402,27 @@ WRITE8_MEMBER(_4enlinea_state::serial_w)
m_maincpu->set_input_line(INPUT_LINE_NMI,ASSERT_LINE);
}
uint8_t _4enlinea_state::eeprom_data_r()
{
return m_eeprom->read_sda();
}
void _4enlinea_state::eeprom_data_w(uint8_t data)
{
m_eeprom->write_sda(BIT(data, 0));
}
void _4enlinea_state::eeprom_control_w(uint8_t data)
{
if (BIT(data, 0))
m_eeprom->write_sda(1);
}
void _4enlinea_state::eeprom_clock_w(uint8_t data)
{
m_eeprom->write_scl(BIT(data, 6));
}
READ8_MEMBER(_4enlinea_state::hack_r)
{
return machine().rand();
@ -400,19 +432,31 @@ void _4enlinea_state::audio_map(address_map &map)
{
map(0x0000, 0x7fff).rom();
map(0xf800, 0xfbff).ram();
map(0xfc24, 0xfc24).r(FUNC(_4enlinea_state::hack_r));
map(0xfc24, 0xfc24).rw(FUNC(_4enlinea_state::eeprom_data_r), FUNC(_4enlinea_state::eeprom_data_w));
map(0xfc25, 0xfc25).w(FUNC(_4enlinea_state::eeprom_control_w));
map(0xfc26, 0xfc26).w(FUNC(_4enlinea_state::eeprom_clock_w));
map(0xfc28, 0xfc28).r(FUNC(_4enlinea_state::hack_r));
map(0xfc30, 0xfc31).w(FUNC(_4enlinea_state::serial_w));
map(0xfc32, 0xfc32).rw(FUNC(_4enlinea_state::serial_status_r), FUNC(_4enlinea_state::serial_status_w));
map(0xfc48, 0xfc49).rw(m_ay, FUNC(ay8910_device::data_r), FUNC(ay8910_device::address_data_w));
map(0xfc48, 0xfc48).w(m_ay, FUNC(ay8910_device::address_w));
map(0xfc49, 0xfc49).r(m_ay, FUNC(ay8910_device::data_r));
map(0xfc4a, 0xfc4a).w(m_ay, FUNC(ay8910_device::data_w));
}
void _4enlinea_state::audio_portmap(address_map &map)
uint8_t _4enlinea_state::k7_in_r()
{
map.global_mask(0xff);
return m_eeprom->read_sda() << 4;
}
void _4enlinea_state::k7_out0_w(uint8_t data)
{
m_eeprom->write_sda(!BIT(data, 3));
m_eeprom->write_scl(BIT(data, 2));
}
void _4enlinea_state::k7_out1_w(uint8_t data)
{
}
void _4enlinea_state::k7_mem_map(address_map &map)
{
@ -423,6 +467,8 @@ void _4enlinea_state::k7_mem_map(address_map &map)
void _4enlinea_state::k7_io_map(address_map &map)
{
map(0x0000, 0x0000).mirror(0xfc00).w(FUNC(_4enlinea_state::k7_out0_w));
map(0x0001, 0x0001).mirror(0xfc00).rw(FUNC(_4enlinea_state::k7_in_r), FUNC(_4enlinea_state::k7_out1_w));
map(0x0100, 0x0100).w(m_ay, FUNC(ay8910_device::address_w));
map(0x0101, 0x0101).r(m_ay, FUNC(ay8910_device::data_r));
map(0x0102, 0x0102).w(m_ay, FUNC(ay8910_device::data_w));
@ -556,9 +602,10 @@ void _4enlinea_state::_4enlinea(machine_config &config)
z80_device &audiocpu(Z80(config, "audiocpu", SND_CPU_CLOCK));
audiocpu.set_addrmap(AS_PROGRAM, &_4enlinea_state::audio_map);
audiocpu.set_addrmap(AS_IO, &_4enlinea_state::audio_portmap);
audiocpu.set_periodic_int(FUNC(_4enlinea_state::_4enlinea_audio_irq), attotime::from_hz(60)); //TODO
I2CMEM(config, m_eeprom).set_page_size(16).set_data_size(0x800); // X24C16P
// FIXME: determine ISA bus clock
isa8_device &isa(ISA8(config, "isa", 0));
isa.set_memspace("maincpu", AS_PROGRAM);
@ -593,6 +640,8 @@ void _4enlinea_state::k7_olym(machine_config &config)
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // D4464C-15L (6264) + battery
I2CMEM(config, m_eeprom).set_page_size(16).set_data_size(0x800); // X24C16P
isa8_device &isa(ISA8(config, "isa", 0));
isa.set_memspace("maincpu", AS_PROGRAM);
isa.set_iospace("maincpu", AS_IO);