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s550: Improve RAM banking

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This commit is contained in:
AJR 2020-07-14 13:10:02 -04:00
parent c85054ada8
commit c0f61c5374
1 changed files with 64 additions and 15 deletions
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79
src/mame/drivers/roland_s50.cpp
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@ -36,7 +36,6 @@ public:
}
void s50(machine_config &config);
void s550(machine_config &config);
protected:
virtual void machine_start() override;
@ -44,7 +43,6 @@ protected:
TIMER_DEVICE_CALLBACK_MEMBER(vdp_timer);
void p2_w(u8 data);
void ioga_out_w(u8 data);
u8 floppy_status_r();
u8 floppy_unknown_r();
u16 key_r(offs_t offset);
@ -54,9 +52,10 @@ protected:
void vram_map(address_map &map);
private:
void ioga_out_w(u8 data);
void mem_map(address_map &map);
void s50_io_map(address_map &map);
void s550_io_map(address_map &map);
void io_map(address_map &map);
protected:
required_device<i8x9x_device> m_maincpu;
@ -69,6 +68,27 @@ protected:
optional_device<mb63h149_device> m_keyscan;
};
class roland_s550_state : public roland_s50_state
{
public:
roland_s550_state(const machine_config &mconfig, device_type type, const char *tag)
: roland_s50_state(mconfig, type, tag)
, m_lowmem(*this, "lowmem")
{
}
void s550(machine_config &config);
private:
void sram_bank_w(u8 data);
void mem_map(address_map &map);
void io_map(address_map &map);
void lowmem_map(address_map &map);
required_device<address_map_bank_device> m_lowmem;
};
class roland_w30_state : public roland_s50_state
{
public:
@ -132,6 +152,12 @@ void roland_s50_state::ioga_out_w(u8 data)
m_sram->set_bank(BIT(data, 6, 2));
}
void roland_s550_state::sram_bank_w(u8 data)
{
m_sram->set_bank(BIT(data, 0, 2));
m_lowmem->set_bank(BIT(data, 2, 3));
}
u8 roland_w30_state::psram_bank_r()
{
return m_psram_bank;
@ -178,7 +204,7 @@ void roland_s50_state::mem_map(address_map &map)
map(0xc000, 0xffff).m(m_io, FUNC(address_map_bank_device::amap16));
}
void roland_s50_state::s50_io_map(address_map &map)
void roland_s50_state::io_map(address_map &map)
{
map(0x0000, 0x0000).w(FUNC(roland_s50_state::ioga_out_w));
map(0x0200, 0x0200).r(FUNC(roland_s50_state::floppy_status_r));
@ -191,16 +217,25 @@ void roland_s50_state::s50_io_map(address_map &map)
map(0x4000, 0x4fff).mirror(0x3000).rw(FUNC(roland_s50_state::key_r), FUNC(roland_s50_state::key_w));
}
void roland_s50_state::s550_io_map(address_map &map)
void roland_s550_state::mem_map(address_map &map)
{
map(0x0000, 0x0000).w(FUNC(roland_s50_state::ioga_out_w));
map(0x0200, 0x0200).r(FUNC(roland_s50_state::floppy_status_r));
map(0x0300, 0x0300).r(FUNC(roland_s50_state::floppy_unknown_r));
map(0x0000, 0x1fff).m(m_lowmem, FUNC(address_map_bank_device::amap16));
map(0x2000, 0x3fff).rom().region("program", 0x2000);
map(0x4000, 0x7fff).ram().share("common");
map(0x8000, 0xbfff).m(m_sram, FUNC(address_map_bank_device::amap16));
map(0xc000, 0xffff).m(m_io, FUNC(address_map_bank_device::amap16));
}
void roland_s550_state::io_map(address_map &map)
{
map(0x0200, 0x0200).r(FUNC(roland_s550_state::floppy_status_r));
map(0x0300, 0x0300).r(FUNC(roland_s550_state::floppy_unknown_r));
map(0x0800, 0x0807).rw(m_fdc, FUNC(wd1772_device::read), FUNC(wd1772_device::write)).umask16(0x00ff);
map(0x1000, 0x1000).r(m_vdp, FUNC(tms3556_device::vram_r));
map(0x1002, 0x1002).rw(m_vdp, FUNC(tms3556_device::initptr_r), FUNC(tms3556_device::vram_w));
map(0x1004, 0x1004).rw(m_vdp, FUNC(tms3556_device::reg_r), FUNC(tms3556_device::reg_w));
//map(0x1800, 0x181f).rw(m_tvf, FUNC(mb654419u_device::read), FUNC(mb654419u_device::write)).umask16(0x00ff);
map(0x2000, 0x2000).w(FUNC(roland_s550_state::sram_bank_w));
map(0x2800, 0x281f).w("outas", FUNC(bu3905_device::write)).umask16(0x00ff);
//map(0x3800, 0x381f).rw(m_scsic, FUNC(mb89352_device::read), FUNC(mb89352_device::write)).umask16(0x00ff);
//map(0x0000, 0x3fff).rw(m_wave, FUNC(rf5c16_device::read), FUNC(rf5c16_device::write)).umask16(0xff00);
@ -240,6 +275,12 @@ void roland_s50_state::sram_map(address_map &map)
map(0x4000, 0xffff).ram();
}
void roland_s550_state::lowmem_map(address_map &map)
{
map(0x0000, 0x1fff).rom().region("program", 0);
map(0x2000, 0xffff).ram();
}
void roland_w30_state::psram1_map(address_map &map)
{
map(0x0000, 0x1fff).rom().region("program", 0);
@ -295,7 +336,7 @@ void roland_s50_state::s50(machine_config &config)
m_io->set_data_width(16);
m_io->set_addr_width(15);
m_io->set_stride(0x4000);
m_io->set_addrmap(0, &roland_s50_state::s50_io_map);
m_io->set_addrmap(0, &roland_s50_state::io_map);
MB63H149(config, m_keyscan, 24_MHz_XTAL / 2);
m_keyscan->int_callback().set_inputline(m_maincpu, i8x9x_device::EXTINT_LINE);
@ -331,11 +372,19 @@ void roland_s50_state::s50(machine_config &config)
//m_wave->int_callback().set_inputline(m_maincpu, i8x9x_device::HSI0_LINE);
}
void roland_s50_state::s550(machine_config &config)
void roland_s550_state::s550(machine_config &config)
{
s50(config);
m_io->set_addrmap(0, &roland_s50_state::s550_io_map);
m_maincpu->set_addrmap(AS_PROGRAM, &roland_s550_state::mem_map);
m_io->set_addrmap(0, &roland_s550_state::io_map);
ADDRESS_MAP_BANK(config, m_lowmem);
m_lowmem->set_endianness(ENDIANNESS_LITTLE);
m_lowmem->set_data_width(16);
m_lowmem->set_addr_width(16);
m_lowmem->set_stride(0x2000);
m_lowmem->set_addrmap(0, &roland_s550_state::lowmem_map);
//UPD7537(config.device_replace(), "fipcpu", 400_kHz_XTAL);
@ -478,7 +527,7 @@ ROM_START(s330)
ROM_END
#endif
SYST(1987, s50, 0, 0, s50, s50, roland_s50_state, empty_init, "Roland", "S-50 Digital Sampling Keyboard", MACHINE_IS_SKELETON)
SYST(1987, s550, s50, 0, s550, s550, roland_s50_state, empty_init, "Roland", "S-550 Digital Sampler", MACHINE_IS_SKELETON)
SYST(1988, w30, 0, 0, w30, w30, roland_w30_state, empty_init, "Roland", "W-30 Music Workstation", MACHINE_IS_SKELETON)
SYST(1987, s50, 0, 0, s50, s50, roland_s50_state, empty_init, "Roland", "S-50 Digital Sampling Keyboard", MACHINE_IS_SKELETON)
SYST(1987, s550, s50, 0, s550, s550, roland_s550_state, empty_init, "Roland", "S-550 Digital Sampler", MACHINE_IS_SKELETON)
SYST(1988, w30, 0, 0, w30, w30, roland_w30_state, empty_init, "Roland", "W-30 Music Workstation", MACHINE_IS_SKELETON)
//SYST(1988, s330, w30, 0, s330, s330, roland_w30_state, empty_init, "Roland", "S-330 Digital Sampler", MACHINE_IS_SKELETON)