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sega/sg1000.cpp: Eliminate ram_device

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This commit is contained in:
AJR 2024-11-23 18:27:33 -05:00
parent 2080595572
commit 539a73766b
1 changed files with 14 additions and 36 deletions
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50
src/mame/sega/sg1000.cpp
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@ -76,7 +76,6 @@ Notes:
#include "imagedev/floppy.h"
#include "machine/i8251.h"
#include "machine/i8255.h"
#include "machine/ram.h"
#include "machine/upd765.h"
#include "sound/sn76496.h"
#include "video/tms9928a.h"
@ -105,7 +104,6 @@ public:
sg1000_state_base(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, Z80_TAG),
m_ram(*this, RAM_TAG),
m_rom(*this, Z80_TAG),
m_cart(*this, "slot"),
m_sgexpslot(*this, "sgexp")
@ -113,7 +111,6 @@ public:
protected:
required_device<cpu_device> m_maincpu;
required_device<ram_device> m_ram;
required_memory_region m_rom;
optional_device<sega8_cart_slot_device> m_cart;
required_device<sg1000_expansion_slot_device> m_sgexpslot;
@ -204,7 +201,8 @@ public:
sc3000_state(mconfig, type, tag),
m_fdc(*this, UPD765_TAG),
m_centronics(*this, "centronics"),
m_floppy0(*this, UPD765_TAG ":0:3ssdd")
m_floppy0(*this, UPD765_TAG ":0:3ssdd"),
m_romview(*this, "romview")
{ }
void sf7000(machine_config &config);
@ -214,10 +212,11 @@ private:
required_device<centronics_device> m_centronics;
required_device<floppy_image_device> m_floppy0;
memory_view m_romview;
int m_centronics_busy = 0;
virtual void machine_start() override ATTR_COLD;
virtual void machine_reset() override ATTR_COLD;
void write_centronics_busy(int state);
uint8_t ppi_pa_r();
@ -361,8 +360,9 @@ void sg1000_state::sc3000_io_map(address_map &map)
void sf7000_state::sf7000_map(address_map &map)
{
map(0x0000, 0x3fff).bankr("bank1").bankw("bank2");
map(0x4000, 0xffff).ram();
map(0x0000, 0xffff).ram();
map(0x0000, 0x3fff).view(m_romview);
m_romview[0](0x0000, 0x3fff).rom().region(Z80_TAG, 0);
}
/*-------------------------------------------------
@ -563,13 +563,13 @@ void sf7000_state::ppi_pc_w(uint8_t data)
m_fdc->tc_w(BIT(data, 2));
/* FDC reset */
if (BIT(data, 3))
{
m_fdc->reset();
}
m_fdc->reset_w(BIT(data, 3));
/* ROM selection */
membank("bank1")->set_entry(BIT(data, 6));
if (BIT(data, 6))
m_romview.disable();
else
m_romview.select(0);
/* printer strobe */
m_centronics->write_strobe(BIT(data, 7));
@ -660,17 +660,6 @@ void sf7000_state::machine_start()
sc3000_state::machine_start();
save_item(NAME(m_centronics_busy));
/* configure memory banking */
membank("bank1")->configure_entry(0, m_rom->base());
membank("bank1")->configure_entry(1, m_ram->pointer());
membank("bank2")->configure_entry(0, m_ram->pointer());
}
void sf7000_state::machine_reset()
{
membank("bank1")->set_entry(0);
membank("bank2")->set_entry(0);
}
/***************************************************************************
@ -685,7 +674,7 @@ void sg1000_state_base::sg1000_base(machine_config &config)
/* video hardware */
tms9918a_device &vdp(TMS9918A(config, TMS9918A_TAG, XTAL(10'738'635)));
vdp.set_screen("screen");
vdp.set_vram_size(0x4000);
vdp.set_vram_size(0x8000);
vdp.int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
SCREEN(config, "screen", SCREEN_TYPE_RASTER);
@ -733,9 +722,6 @@ void sg1000_state::sg1000(machine_config &config)
/* cartridge */
SG1000_CART_SLOT(config, m_cart, sg1000_cart, nullptr).set_must_be_loaded(true);
/* internal ram */
RAM(config, m_ram).set_default_size("1K");
}
/*-------------------------------------------------
@ -754,9 +740,6 @@ void omv_state::omv1000(machine_config &config)
/* cartridge */
OMV_CART_SLOT(config, m_cart, sg1000_cart, nullptr);
/* internal ram */
RAM(config, m_ram).set_default_size("2K");
}
/*-------------------------------------------------
@ -784,9 +767,6 @@ void sc3000_state::sc3000(machine_config &config)
/* cartridge */
SC3000_CART_SLOT(config, m_cart, sg1000_cart, nullptr).set_must_be_loaded(true);
/* internal ram */
RAM(config, m_ram).set_default_size("2K");
}
/*-------------------------------------------------
@ -807,6 +787,7 @@ void sf7000_state::sf7000(machine_config &config)
ppi.in_pa_callback().set(FUNC(sf7000_state::ppi_pa_r));
ppi.out_pb_callback().set("cent_data_out", FUNC(output_latch_device::write));
ppi.out_pc_callback().set(FUNC(sf7000_state::ppi_pc_w));
ppi.tri_pc_callback().set_constant(0x8f); // /ROM SEL must be active after reset
i8251_device &upd8251(I8251(config, UPD8251_TAG, 0));
upd8251.txd_handler().set(RS232_TAG, FUNC(rs232_port_device::write_txd));
@ -828,9 +809,6 @@ void sf7000_state::sf7000(machine_config &config)
/* software lists */
SOFTWARE_LIST(config, "flop_list").set_original("sf7000");
/* internal ram */
RAM(config, m_ram).set_default_size("64K");
}
/***************************************************************************