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tecnodar: Fix mapping; add EEPROM

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This commit is contained in:
AJR 2020-07-18 10:43:34 -04:00
parent b4eb4da530
commit b4175b543d
1 changed files with 32 additions and 6 deletions
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38
src/mame/drivers/tecnodar.cpp
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@ -8,6 +8,7 @@
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/eepromser.h"
#include "machine/i8255.h"
#include "sound/ay8910.h"
#include "video/tms9928a.h"
@ -21,12 +22,18 @@ public:
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_ppi(*this, "ppi")
, m_eeprom(*this, "eeprom")
, m_rombank(*this, "rombank")
{
}
void tecnodar(machine_config &config);
protected:
virtual void machine_start() override;
private:
void bank_w(u8 data);
u8 ppi_r(offs_t offset);
void ppi_w(offs_t offset, u8 data);
void ppi_pa_w(u8 data);
@ -38,9 +45,23 @@ private:
required_device<z80_device> m_maincpu;
required_device<i8255_device> m_ppi;
required_device<eeprom_serial_93cxx_device> m_eeprom;
required_memory_bank m_rombank;
};
void tecnodar_state::machine_start()
{
m_rombank->configure_entries(0, 8, memregion("banked")->base(), 0x4000);
m_rombank->set_entry(0);
}
void tecnodar_state::bank_w(u8 data)
{
m_rombank->set_entry(data & 0x07);
}
u8 tecnodar_state::ppi_r(offs_t offset)
{
return m_ppi->read(offset >> 5);
@ -53,7 +74,9 @@ void tecnodar_state::ppi_w(offs_t offset, u8 data)
void tecnodar_state::ppi_pa_w(u8 data)
{
logerror("%s: Writing %02X to PPI port A\n", machine().describe_context(), data);
m_eeprom->cs_write(BIT(data, 0));
m_eeprom->clk_write(BIT(data, 1));
m_eeprom->di_write(BIT(data, 2));
}
void tecnodar_state::ppi_pb_w(u8 data)
@ -69,11 +92,11 @@ void tecnodar_state::ppi_pc_w(u8 data)
void tecnodar_state::mem_map(address_map &map)
{
map(0x0000, 0x3fff).rom().region("program", 0);
//map(0x4000, 0x7fff).bankr("rombank");
map(0x4000, 0x7fff).bankr("rombank");
map(0x8002, 0x8002).select(0x60).rw(FUNC(tecnodar_state::ppi_r), FUNC(tecnodar_state::ppi_w));
map(0x8004, 0x8004).w("psg", FUNC(ay8910_device::data_w));
map(0x8008, 0x8008).w("psg", FUNC(ay8910_device::address_w));
map(0x800c, 0x800c).r("psg", FUNC(ay8910_device::data_r));
map(0x8008, 0x8008).r("psg", FUNC(ay8910_device::data_r));
map(0x800c, 0x800c).w("psg", FUNC(ay8910_device::address_w));
map(0x8010, 0x8011).rw("vdp", FUNC(tms9129_device::read), FUNC(tms9129_device::write));
map(0xc000, 0xc7ff).ram();
}
@ -81,7 +104,7 @@ void tecnodar_state::mem_map(address_map &map)
void tecnodar_state::io_map(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x00).nopw();
map(0x00, 0x00).w(FUNC(tecnodar_state::bank_w));
}
@ -118,14 +141,17 @@ void tecnodar_state::tecnodar(machine_config &config)
{
Z80(config, m_maincpu, 10.245_MHz_XTAL / 3); // GoldStar Z8400APS; divider not verified
m_maincpu->set_addrmap(AS_PROGRAM, &tecnodar_state::mem_map);
m_maincpu->set_addrmap(AS_PROGRAM, &tecnodar_state::io_map);
m_maincpu->set_addrmap(AS_IO, &tecnodar_state::io_map);
// NMI is some sort of reset control
I8255(config, m_ppi); // TMP82C55AP-2
m_ppi->out_pa_callback().set(FUNC(tecnodar_state::ppi_pa_w));
m_ppi->out_pb_callback().set(FUNC(tecnodar_state::ppi_pb_w));
m_ppi->in_pc_callback().set(m_eeprom, FUNC(eeprom_serial_93cxx_device::do_read)).bit(0);
m_ppi->out_pc_callback().set(FUNC(tecnodar_state::ppi_pc_w));
EEPROM_93C46_8BIT(config, m_eeprom); // unknown 8-pin IC
SCREEN(config, "screen", SCREEN_TYPE_RASTER);
tms9129_device &vdp(TMS9129(config, "vdp", 10.245_MHz_XTAL)); // surface-scratched 40-pin DIP; exact type unknown