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crimson: Fix ROM loading; add some RAM and devices (nw)

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This commit is contained in:
AJR 2019-06-06 12:18:56 -04:00
parent 4162b349b2
commit 09bcaa7560
1 changed files with 60 additions and 1 deletions
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61
src/mame/drivers/crimson.cpp
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@ -12,7 +12,11 @@
**********************************************************************/
#include "emu.h"
#include "bus/rs232/rs232.h"
#include "cpu/mips/mips3.h"
#include "machine/mc68681.h"
#include "machine/nvram.h"
#include "machine/pit8253.h"
#define LOG_UNKNOWN (1 << 0)
#define LOG_ALL (LOG_UNKNOWN)
@ -26,19 +30,64 @@ public:
crimson_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_nvram(*this, "nvram")
, m_duart(*this, "duart")
{
}
void crimson(machine_config &config);
protected:
virtual void machine_start() override;
u8 nvram_r(offs_t offset);
void nvram_w(offs_t offset, u8 data);
u8 duart_r(offs_t offset);
void duart_w(offs_t offset, u8 data);
void mem_map(address_map &map);
required_device<r4000be_device> m_maincpu;
required_device<nvram_device> m_nvram;
required_device<scn2681_device> m_duart;
std::unique_ptr<u8[]> m_nvram_data;
};
void crimson_state::machine_start()
{
m_nvram_data = std::make_unique<u8[]>(0x800);
m_nvram->set_base(m_nvram_data.get(), 0x800);
save_pointer(NAME(m_nvram_data), 0x800);
}
u8 crimson_state::nvram_r(offs_t offset)
{
return m_nvram_data[offset];
}
void crimson_state::nvram_w(offs_t offset, u8 data)
{
m_nvram_data[offset] = data;
}
u8 crimson_state::duart_r(offs_t offset)
{
return m_duart->read(offset >> 1);
}
void crimson_state::duart_w(offs_t offset, u8 data)
{
m_duart->write(offset >> 1, data);
}
void crimson_state::mem_map(address_map &map)
{
map(0x00000000, 0x00002fff).ram();
map(0x00500000, 0x009fffff).ram();
map(0x17f10000, 0x17f13fff).rw(FUNC(crimson_state::nvram_r), FUNC(crimson_state::nvram_w)).umask64(0xff00000000000000LLU);
map(0x1f600000, 0x1f60000f).rw("pit", FUNC(pit8254_device::read), FUNC(pit8254_device::write)).umask64(0xff000000ff000000LLU);
map(0x1fa00000, 0x1fa000ff).rw(FUNC(crimson_state::duart_r), FUNC(crimson_state::duart_w)).umask64(0xff00000000000000LLU);
map(0x1fc00000, 0x1fc7ffff).rom().region("user1", 0);
}
@ -51,10 +100,20 @@ void crimson_state::crimson(machine_config &config)
m_maincpu->set_icache_size(32768);
m_maincpu->set_dcache_size(32768);
m_maincpu->set_addrmap(AS_PROGRAM, &crimson_state::mem_map);
NVRAM(config, m_nvram, nvram_device::DEFAULT_ALL_0); // CXK5816PN-15 + battery?
SCN2681(config, m_duart, 3.6864_MHz_XTAL); // TODO: there are two more of these
m_duart->a_tx_cb().set("rs232", FUNC(rs232_port_device::write_txd));
PIT8254(config, "pit");
rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, "terminal"));
rs232.rxd_handler().set(m_duart, FUNC(scn2681_device::rx_a_w));
}
ROM_START( crimson )
ROM_REGION32_BE( 0x80000, "user1", 0 )
ROM_REGION64_BE( 0x80000, "user1", 0 )
ROMX_LOAD( "ip17prom.070-081x-005.bin", 0x000000, 0x080000, CRC(d62e8c8e) SHA1(b335213ecfd02ca3185b6ba1874a8b76f908c68b), ROM_GROUPDWORD )
ROM_END