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caramball: Add memory map, interrupt and some stub write handlers

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This commit is contained in:
AJR 2023-06-23 22:01:24 -04:00
parent 76e5e89fed
commit 2fcb6101b0
1 changed files with 51 additions and 2 deletions
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53
src/mame/skeleton/caramball.cpp
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@ -40,6 +40,7 @@ Skeleton driver for electromechanical air hockey hardware from the Spanish compa
#include "cpu/i8085/i8085.h"
#include "machine/i8155.h"
#include "machine/nvram.h"
#include "sound/ay8910.h"
#include "speaker.h"
@ -58,9 +59,46 @@ public:
void caramball(machine_config &config);
private:
void i8155_pa_w(u8 data);
void i8155_pb_w(u8 data);
void i8155_pc_w(u8 data);
void f000_w(u8 data);
void mem_map(address_map &map);
required_device<i8085a_cpu_device> m_maincpu;
};
void caramball_state::i8155_pa_w(u8 data)
{
logerror("%s: 8155 Port A <- %02X\n", machine().describe_context(), data);
}
void caramball_state::i8155_pb_w(u8 data)
{
logerror("%s: 8155 Port B <- %02X\n", machine().describe_context(), data);
}
void caramball_state::i8155_pc_w(u8 data)
{
logerror("%s: 8155 Port C <- %02X\n", machine().describe_context(), data);
}
void caramball_state::f000_w(u8 data)
{
logerror("%s: F000 <- %02X\n", machine().describe_context(), data);
}
void caramball_state::mem_map(address_map &map)
{
map(0x0000, 0x7fff).rom().region("maincpu", 0);
map(0x8000, 0x87ff).ram().share("nvram");
map(0xa000, 0xa0ff).rw("i8155", FUNC(i8155_device::memory_r), FUNC(i8155_device::memory_w));
map(0xa100, 0xa107).rw("i8155", FUNC(i8155_device::io_r), FUNC(i8155_device::io_w));
map(0xc000, 0xc000).rw("psg", FUNC(ay8910_device::data_r), FUNC(ay8910_device::data_w));
map(0xd000, 0xd000).w("psg", FUNC(ay8910_device::address_w));
map(0xf000, 0xf000).w(FUNC(caramball_state::f000_w));
}
// 1 x 8-dips bank
INPUT_PORTS_START(caramball)
PORT_START("DSW")
@ -72,18 +110,29 @@ INPUT_PORTS_START(caramball)
PORT_DIPUNKNOWN_DIPLOC(0x20, 0x20, "SW1:6")
PORT_DIPUNKNOWN_DIPLOC(0x40, 0x40, "SW1:7")
PORT_DIPUNKNOWN_DIPLOC(0x80, 0x80, "SW1:8")
PORT_START("UNK")
PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN)
INPUT_PORTS_END
void caramball_state::caramball(machine_config &config)
{
I8085A(config, m_maincpu, 6.144_MHz_XTAL); // OKI M80C85A
m_maincpu->set_addrmap(AS_PROGRAM, &caramball_state::mem_map);
I8155(config, "i8155", 6.144_MHz_XTAL); // NEC D8155HC
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // MK48Z02B-20
i8155_device &i8155(I8155(config, "i8155", 6.144_MHz_XTAL / 2)); // NEC D8155HC
i8155.out_pa_callback().set(FUNC(caramball_state::i8155_pa_w));
i8155.out_pb_callback().set(FUNC(caramball_state::i8155_pb_w));
i8155.out_pc_callback().set(FUNC(caramball_state::i8155_pc_w));
i8155.out_to_callback().set_inputline(m_maincpu, I8085_RST65_LINE).invert();
SPEAKER(config, "mono").front_center();
ay8910_device &psg(AY8910(config, "psg", 6_MHz_XTAL / 4)); // Divider unknown
ay8910_device &psg(AY8910(config, "psg", 6.144_MHz_XTAL / 4)); // Divider unknown
psg.port_a_read_callback().set_ioport("DSW");
psg.port_b_read_callback().set_ioport("UNK");
psg.add_route(ALL_OUTPUTS, "mono", 1.0); // Guess
}