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ssystem3: add nvram (nw)

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This commit is contained in:
hap 2019-08-24 18:21:04 +02:00
parent 807a6b5384
commit a03b6c6a8d
2 changed files with 35 additions and 5 deletions
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10
src/mame/drivers/novag_savant.cpp
View File

@ -89,6 +89,7 @@ private:
void mcu_io(address_map &map);
// I/O handlers
DECLARE_WRITE8_MEMBER(nvram_w);
DECLARE_READ8_MEMBER(nvram_r);
DECLARE_READ8_MEMBER(stall_r);
DECLARE_WRITE8_MEMBER(stall_w);
@ -136,9 +137,14 @@ void savant_state::machine_start()
// Z80 side
READ8_MEMBER(savant_state::nvram_r)
WRITE8_MEMBER(savant_state::nvram_w)
{
// nvram is only d0-d3
m_nvram[offset] = data & 0xf;
}
READ8_MEMBER(savant_state::nvram_r)
{
return m_nvram[offset] & 0xf;
}
@ -273,7 +279,7 @@ void savant_state::main_map(address_map &map)
{
map(0x0000, 0x5fff).rom();
map(0xc000, 0xcfff).ram();
map(0xd000, 0xd0ff).mirror(0x0300).ram().r(FUNC(savant_state::nvram_r)).share("nvram");
map(0xd000, 0xd0ff).mirror(0x0300).ram().rw(FUNC(savant_state::nvram_r), FUNC(savant_state::nvram_w)).share("nvram");
}
void savant_state::main_io(address_map &map)

30
src/mame/drivers/saitek_ssystem3.cpp
View File

@ -52,7 +52,6 @@ TODO:
probably to keep refreshing the LCD when inactive, there is no need to emulate it
- dump/add chessboard lcd and printer unit
- dump/add 1980 program revision, were the BTANB fixed?
- add memory unit
BTANB:
- If the TIME switch is held up, it will sometimes recognize the wrong input when
@ -91,6 +90,7 @@ public:
m_lcd(*this, "lcd"),
m_display(*this, "display"),
m_dac(*this, "dac"),
m_nvram(*this, "nvram"),
m_inputs(*this, "IN.%u", 0)
{ }
@ -107,13 +107,16 @@ private:
required_device<md4332b_device> m_lcd;
required_device<pwm_display_device> m_display;
required_device<dac_bit_interface> m_dac;
required_ioport_array<4+1> m_inputs;
required_shared_ptr<u8> m_nvram;
required_ioport_array<4+2> m_inputs;
// address maps
void main_map(address_map &map);
// I/O handlers
DECLARE_WRITE32_MEMBER(lcd_q_w) { m_lcd_q = data; }
DECLARE_WRITE8_MEMBER(nvram_w);
DECLARE_READ8_MEMBER(nvram_r);
DECLARE_WRITE8_MEMBER(input_w);
DECLARE_READ8_MEMBER(input_r);
DECLARE_WRITE8_MEMBER(control_w);
@ -146,6 +149,18 @@ void ssystem3_state::machine_start()
I/O
******************************************************************************/
WRITE8_MEMBER(ssystem3_state::nvram_w)
{
// nvram is only d0-d3
if (m_inputs[5]->read() & 1)
m_nvram[offset] = data & 0x0f;
}
READ8_MEMBER(ssystem3_state::nvram_r)
{
return (m_inputs[5]->read() & 1) ? (m_nvram[offset] & 0x0f) : 0;
}
WRITE8_MEMBER(ssystem3_state::input_w)
{
// PA0-PA7: input mux
@ -218,6 +233,7 @@ READ8_MEMBER(ssystem3_state::control_r)
void ssystem3_state::main_map(address_map &map)
{
map(0x0000, 0x03ff).mirror(0x3c00).ram();
map(0x4000, 0x40ff).mirror(0x1f00).ram().rw(FUNC(ssystem3_state::nvram_r), FUNC(ssystem3_state::nvram_w)).share("nvram");
map(0x6000, 0x600f).mirror(0x1ff0).m(m_via, FUNC(via6522_device::map));
map(0x8000, 0x9fff).mirror(0x6000).rom();
}
@ -260,6 +276,11 @@ static INPUT_PORTS_START( ssystem3 )
PORT_CONFNAME( 0x02, 0x02, "Light" )
PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
PORT_CONFSETTING( 0x02, DEF_STR( On ) )
PORT_START("IN.5") // accessories
PORT_CONFNAME( 0x01, 0x01, "Memory Unit" )
PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
PORT_CONFSETTING( 0x01, DEF_STR( On ) )
INPUT_PORTS_END
@ -280,7 +301,7 @@ void ssystem3_state::ssystem3(machine_config &config)
m_via->writepb_handler().set(FUNC(ssystem3_state::control_w));
m_via->readpb_handler().set(FUNC(ssystem3_state::control_r));
//NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
/* video hardware */
MD4332B(config, m_lcd);
@ -315,6 +336,9 @@ ROM_START( ssystem3 )
// HACK! 6522 ACR register setup
ROM_FILL(0x946d, 1, 0xe0) // was 0xe3
ROM_REGION( 0x100, "nvram", 0 ) // default settings
ROM_LOAD( "nvram", 0, 0x100, CRC(b5dddc7b) SHA1(3be9ec8359cc9ef16a04f28dfd24f9ffe1a2fca9) )
ROM_REGION( 53511, "screen", 0)
ROM_LOAD( "ssystem3.svg", 0, 53511, CRC(a2820cc8) SHA1(2e922bb2d4a244931c1e7dafa84910dee5ab2623) )
ROM_END