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hotblock: Hook up I2C EEPROM

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This commit is contained in:
Dirk Best 2019-05-15 13:36:26 +02:00
parent 85f717190c
commit 0b022f9776
1 changed files with 17 additions and 24 deletions
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41
src/mame/drivers/hotblock.cpp
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@ -27,13 +27,14 @@ Tetris with naughty bits
there are a variety of test modes which can be obtained
by resetting while holding down player 2 buttons
eeprom / backup data not hooked up ( 24c04a on port4 )
most sources say this is a game by Nics but I believe Nics
to be a company from Korea, this game is quite clearly a
Spanish game, we know for a fact that NIX are from Spain
so it could be by them instead
For some reason the game isn't saving scores to the EEPROM. Settings and
statistics are saved however. The option "AUTO SAVE SCORES" doesn't seem
to be honored - the game writes the value to RAM but never reads it.
*/
@ -41,7 +42,7 @@ so it could be by them instead
#include "emu.h"
#include "cpu/i86/i86.h"
#include "machine/bankdev.h"
//#include "machine/i2cmem.h"
#include "machine/i2cmem.h"
#include "sound/ay8910.h"
#include "emupal.h"
#include "screen.h"
@ -55,8 +56,8 @@ public:
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_palette(*this, "palette"),
m_video_bank(*this, "video_bank")/*,
m_i2cmem(*this, "i2cmem")*/,
m_video_bank(*this, "video_bank"),
m_i2cmem(*this, "i2cmem"),
m_vram(*this, "vram")
{ }
@ -67,17 +68,16 @@ private:
required_device<cpu_device> m_maincpu;
required_device<palette_device> m_palette;
required_device<address_map_bank_device> m_video_bank;
// required_device<i2cmem_device> m_i2cmem;
required_device<i2cmem_device> m_i2cmem;
/* misc */
int m_port0;
int m_port4;
/* memory */
required_shared_ptr<uint8_t> m_vram;
u8 port4_r();
void port4_w(u8 data);
u8 eeprom_r();
void eeprom_w(u8 data);
void port0_w(u8 data);
virtual void video_start() override;
@ -88,24 +88,17 @@ private:
void hotblock_map(address_map &map);
};
/* port 4 is some kind of eeprom / storage .. used to store the scores */
u8 hotblock_state::port4_r()
u8 hotblock_state::eeprom_r()
{
// osd_printf_debug("port4_r\n");
//logerror("trying to read port 4 at maincpu pc %08x\n", m_maincpu->pc());
//return (m_i2cmem->read_sda() & 1);
return 0x00;
return m_i2cmem->read_sda();
}
void hotblock_state::port4_w(u8 data)
void hotblock_state::eeprom_w(u8 data)
{
//logerror("trying to write port 4 in %02x at maincpu pc %08x\n", data, m_maincpu->pc());
m_port4 = data;
m_i2cmem->write_scl(BIT(data, 1));
m_i2cmem->write_sda(BIT(data, 0));
}
void hotblock_state::port0_w(u8 data)
{
m_port0 = data;
@ -122,7 +115,7 @@ void hotblock_state::hotblock_map(address_map &map)
void hotblock_state::hotblock_io(address_map &map)
{
map(0x0000, 0x0000).w(FUNC(hotblock_state::port0_w));
map(0x0004, 0x0004).rw(FUNC(hotblock_state::port4_r), FUNC(hotblock_state::port4_w));
map(0x0004, 0x0004).rw(FUNC(hotblock_state::eeprom_r), FUNC(hotblock_state::eeprom_w));
map(0x8000, 0x8001).w("aysnd", FUNC(ym2149_device::address_data_w));
map(0x8001, 0x8001).r("aysnd", FUNC(ym2149_device::data_r));
}
@ -138,7 +131,6 @@ void hotblock_state::banked_video_map(address_map &map)
void hotblock_state::video_start()
{
save_item(NAME(m_port0));
save_item(NAME(m_port4)); //stored but not read for now
}
uint32_t hotblock_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
@ -192,7 +184,8 @@ void hotblock_state::hotblock(machine_config &config)
m_maincpu->set_addrmap(AS_PROGRAM, &hotblock_state::hotblock_map);
m_maincpu->set_addrmap(AS_IO, &hotblock_state::hotblock_io);
// I2CMEM(config, m_i2cmem, 0).set_page_size(16).set_data_size(0x200); // 24C04
I2CMEM(config, "i2cmem", 0).set_page_size(16).set_data_size(0x200); // 24C04A
ADDRESS_MAP_BANK(config, m_video_bank).set_map(&hotblock_state::banked_video_map).set_options(ENDIANNESS_LITTLE, 8, 24, 0x10000);
/* video hardware */