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https://github.com/holub/mame
synced 2025-04-23 00:39:36 +03:00
mtu130: Fix 2bpp, fix ipl rom size, implement external rom support.
This commit is contained in:
Olivier Galibert
parent
5499683a23
commit
f7445c878b
@ -32,6 +32,7 @@
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#include "emu.h"
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#include "cpu/m6502/m6502mtu.h"
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#include "imagedev/floppy.h"
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#include "imagedev/cartrom.h"
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#include "machine/6522via.h"
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#include "machine/input_merger.h"
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#include "machine/mos6551.h"
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@ -44,7 +45,31 @@
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#include "screen.h"
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#include "speaker.h"
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class mtu130_state: public driver_device
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class mtu130_rom_device : public device_t, public device_rom_image_interface {
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public:
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mtu130_rom_device(const machine_config &mconfig, char const *tag, device_t *owner, uint32_t clock);
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template <typename T> mtu130_rom_device(const machine_config &mconfig, char const *tag, device_t *owner, T &&romdata_tag, offs_t load_offset) :
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mtu130_rom_device(mconfig, tag, owner, 0)
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{
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m_load_offset = load_offset;
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m_romdata.set_tag(std::forward<T>(romdata_tag));
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}
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virtual bool is_reset_on_load() const noexcept override { return false; }
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virtual const char *file_extensions() const noexcept override { return "rom,bin"; }
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protected:
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virtual void device_start() override;
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virtual image_init_result call_load() override;
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virtual void call_unload() override;
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private:
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required_shared_ptr<u8> m_romdata;
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offs_t m_load_offset;
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};
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class mtu130_state : public driver_device
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{
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public:
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mtu130_state(const machine_config &mconfig, device_type type, const char *tag) :
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@ -59,6 +84,7 @@ public:
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m_fdc(*this, "fdc"),
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m_floppy(*this, "fdc:%d", 0U),
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m_ext(*this, "ext%d", 0U),
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m_roms(*this, "rom%d", 0U),
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m_screen(*this, "screen"),
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m_palette(*this, "palette"),
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m_dac(*this, "dac"),
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@ -70,8 +96,10 @@ public:
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m_mainram(*this, "mainram"),
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m_fdcram(*this, "fdcram"),
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m_videoram(*this, "videoram"),
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m_romdata(*this, "romdata"),
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m_keyboard(*this, "K%X", 0L),
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m_keyboard_meta(*this, "KM")
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m_keyboard_meta(*this, "KM"),
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m_jumpers(*this, "jumpers")
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{ }
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void mtu130(machine_config &config);
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@ -82,6 +110,7 @@ public:
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protected:
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virtual void machine_start() override;
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virtual void machine_reset() override;
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virtual void video_start() override;
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private:
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@ -95,6 +124,7 @@ private:
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required_device<upd765a_device> m_fdc;
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required_device_array<floppy_connector, 4> m_floppy;
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required_device_array<mtu130_extension_device, 3> m_ext;
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required_device_array<mtu130_rom_device, 4> m_roms;
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required_device<screen_device> m_screen;
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required_device<palette_device> m_palette;
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required_device<dac_byte_interface> m_dac;
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@ -107,9 +137,11 @@ private:
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required_shared_ptr<u8> m_mainram;
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required_shared_ptr<u8> m_fdcram;
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required_shared_ptr<u8> m_videoram;
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required_shared_ptr<u8> m_romdata;
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required_ioport_array<16> m_keyboard;
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required_ioport m_keyboard_meta;
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required_ioport m_jumpers;
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uint16_t m_dma_adr;
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u8 m_keyboard_col;
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@ -145,6 +177,49 @@ private:
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void io_disable_w(u8);
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};
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DEFINE_DEVICE_TYPE(MTU130_ROM, mtu130_rom_device, "mtu130_rom", "MTU130 rom slot")
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mtu130_rom_device::mtu130_rom_device(const machine_config &mconfig, char const *tag, device_t *owner, uint32_t clock) :
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device_t(mconfig, MTU130_ROM, tag, owner, clock),
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device_rom_image_interface(mconfig, *this),
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m_romdata(*this, finder_base::DUMMY_TAG),
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m_load_offset(0)
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{
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}
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void mtu130_rom_device::device_start()
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{
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if(!exists())
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memset(m_romdata + m_load_offset, 0xff, 4096);
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}
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image_init_result mtu130_rom_device::call_load()
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{
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u32 len = !loaded_through_softlist() ? length() : get_software_region_length("rom");
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if(!len || len > 4096 || (4096 % len))
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return image_init_result::FAIL;
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if (!loaded_through_softlist())
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fread(m_romdata + m_load_offset, len);
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else
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memcpy(m_romdata + m_load_offset, get_software_region("rom"), len);
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if(len < 4096) {
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offs_t delta = len;
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while(delta < 4096) {
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memcpy(m_romdata + m_load_offset + delta, m_romdata + m_load_offset, len);
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delta += len;
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}
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}
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return image_init_result::PASS;
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}
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void mtu130_rom_device::call_unload()
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{
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memset(m_romdata + m_load_offset, 0xff, 4096);
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}
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void mtu130_state::machine_start()
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{
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m_dma_adr = 0;
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@ -167,7 +242,6 @@ void mtu130_state::machine_start()
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m_fdc->set_rate(500000);
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m_io_view.select(1);
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m_se_view.select(0);
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m_rom_view.disable();
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m_rof_view.disable();
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@ -175,6 +249,11 @@ void mtu130_state::machine_start()
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e->map_io(m_io_view[1]);
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}
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void mtu130_state::machine_reset()
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{
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m_se_view.select(m_jumpers->read() & 0x01);
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}
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void mtu130_state::video_start()
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{
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m_palette->set_pen_color(0, 0, 0, 0);
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@ -208,10 +287,10 @@ uint32_t mtu130_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap
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const u8 *src = m_videoram + 60 * y + (x0 >> 4);
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u16 *dest = &bitmap.pix(y, cliprect.left());
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u8 v = 0;
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if(x0 & 15)
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if(x0 & 7)
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v = *src++;
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for(int x = x0; x <= x1; x++) {
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if(!(x & 15))
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if(!(x & 7))
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v = *src++;
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*dest++ = (v >> (6 - 2*((x >> 1) & 3))) & 3;
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}
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@ -294,6 +373,13 @@ void mtu130_state::sys1_pb_w(u8 data)
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m_maincpu->set_dbank((~data) & 3);
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m_maincpu->set_pbank((~data >> 2) & 3);
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// The jumper inverts the via-driven selection between external
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// and fdc rom, changing the reset default.
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if(data & 0x40)
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m_se_view.select(m_jumpers->read() & 0x01);
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else
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m_se_view.select((m_jumpers->read() & 0x01) ^ 1);
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if(data & 0x80)
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m_rom_view.disable();
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else
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@ -388,6 +474,8 @@ void mtu130_state::map(address_map &map)
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m_se_view[0](0x0ffea, 0x0ffea).w(FUNC(mtu130_state::dma_adr_w));
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m_se_view[0](0x0ffee, 0x0ffef).m(m_fdc, FUNC(upd765a_device::map));
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m_se_view[1](0x0c000, 0x0ffff).rom().share(m_romdata); // External rom view, contents set by the MTU130_ROM subdevices
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map(0x0fffe, 0x0fffe).w(FUNC(mtu130_state::io_enable_w));
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map(0x0ffff, 0x0ffff).w(FUNC(mtu130_state::io_disable_w));
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@ -472,10 +560,20 @@ void mtu130_state::mtu130(machine_config &config)
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extension_board(config, 0, "ext0", "datamover");
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extension_board(config, 1, "ext1", nullptr);
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extension_board(config, 2, "ext2", nullptr);
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MTU130_ROM(config, m_roms[0], m_romdata, 0x3000);
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MTU130_ROM(config, m_roms[1], m_romdata, 0x2000);
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MTU130_ROM(config, m_roms[2], m_romdata, 0x1000);
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MTU130_ROM(config, m_roms[3], m_romdata, 0x0000);
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}
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static INPUT_PORTS_START(mtu130)
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PORT_START("jumpers")
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PORT_CONFNAME(0x01, 0x00, "Boot rom")
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PORT_CONFSETTING(0x00, "FDC rom")
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PORT_CONFSETTING(0x01, "ROM1 rom (aka rom F)")
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PORT_START("K0")
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PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
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PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_2) PORT_NAME("RIGHT SHIFT")
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@ -612,7 +710,7 @@ static INPUT_PORTS_START(mtu130)
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INPUT_PORTS_END
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ROM_START(mtu130)
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ROM_REGION(0x800, "ipl", 0)
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ROM_REGION(0x100, "ipl", 0)
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ROM_LOAD("ipl_prom.u6", 0, 0x100, CRC(edb1525a) SHA1(a16cce3b096f0fea9ac5c6993ee4241e4af1efde))
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ROM_END
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