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https://github.com/holub/mame
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multi16: Improve rendering and use 6845, various clean ups
- Correct driver name to "MULTI 16-II MP-1645" - Add model list with some infos - Add PIT, FDC and floppies - Map PIT, unmap PIC - Correct CRTC type to HD6845 - Screen raw parameters - Add 3 bit RGB palette
This commit is contained in:
Dirk Best
parent
fe6c9428cb
commit
3dc0163e50
@ -1,15 +1,44 @@
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// license:BSD-3-Clause
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// copyright-holders:Angelo Salese
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// copyright-holders:Angelo Salese, Dirk Best
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/***************************************************************************
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Mitsubishi Multi 16
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Mitsubishi MULTI-16 series
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MULTI-16 (1982, 1983 for S models)
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- 8088, 4 MHz
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- 8041 (MCU), 8253 (PIT), 8259A (PIC), MB8866 (FDC)
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- MP-1601 (128 KB RAM, 32 KB VRAM, monochrome, 1x 5.25")
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- MP-1602 (192 KB RAM, 32 KB VRAM, monochrome, 2x 5.25")
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- MP-1605 (256 KB RAM, 96 KB VRAM, 8 colors, 2x 5.25")
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- MP-1601S (8087, 128 KB RAM, 32 KB VRAM, monochrome, 1x 5.25")
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- MP-1602S (8087, 192 KB RAM, 32 KB VRAM, monochrome, 2x 5.25")
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- MP-1605S (8087, 256 KB RAM, 96 KB VRAM, 8 colors, 2x 5.25")
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- MP-1622 (8087, 192 KB RAM, 32 KB VRAM, monochrome, 2x 8")
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- MP-1625 (8087, 256 KB RAM, 96 KB VRAM, 8 colors, 2x 8")
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MULTI-16 II (1984)
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- 8086, 8 MHz
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- MP-1642 (256 KB RAM, 64 KB VRAM, monochrome, 2x 5.25")
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- MP-1645 (256 KB RAM, 192 KB VRAM, 8 colors, 2x 5.25")
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MULTI-16 IV (1986)
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- 80286, 8 MHz
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- MP-1652-A20 (512 KB RAM, 128 KB VRAM, monochrome, 2x 5.25")
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- MP-1652-A22 (512 KB RAM, 128 KB VRAM, monochrome, 2x 5.25", 20 MB HDD)
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- MP-1655-A20 (512 KB RAM, 384 KB VRAM, 8 colors, 2x 5.25")
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- MP-1655-A22 (512 KB RAM, 384 KB VRAM, 8 colors, 2x 5.25", 20 MB HDD)
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The IPL dump we currently have seems to be from the MP-1645.
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****************************************************************************/
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#include "emu.h"
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#include "cpu/i86/i86.h"
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#include "machine/pic8259.h"
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#include "machine/pit8253.h"
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#include "machine/wd_fdc.h"
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#include "video/mc6845.h"
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#include "imagedev/floppy.h"
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#include "emupal.h"
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#include "screen.h"
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@ -20,108 +49,87 @@ public:
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multi16_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_pic(*this, "pic8259"),
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m_pic(*this, "pic"),
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m_pit(*this, "pit"),
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m_crtc(*this, "crtc"),
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m_palette(*this, "palette"),
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m_p_vram(*this, "p_vram")
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m_fdc(*this, "fdc"),
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m_floppy(*this, "fdc:%u", 0U),
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m_vram(*this, "vram")
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{ }
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void multi16(machine_config &config);
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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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private:
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required_device<cpu_device> m_maincpu;
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required_device<pic8259_device> m_pic;
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required_device<mc6845_device> m_crtc;
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required_device<pit8253_device> m_pit;
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required_device<hd6845_device> m_crtc;
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required_device<palette_device> m_palette;
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DECLARE_WRITE8_MEMBER(multi16_6845_address_w);
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DECLARE_WRITE8_MEMBER(multi16_6845_data_w);
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required_shared_ptr<uint16_t> m_p_vram;
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uint8_t m_crtc_vreg[0x100], m_crtc_index;
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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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uint32_t screen_update_multi16(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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required_device<mb8866_device> m_fdc;
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required_device_array<floppy_connector, 2> m_floppy;
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required_shared_ptr<uint16_t> m_vram;
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MC6845_UPDATE_ROW(crtc_update_row);
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void multi16_io(address_map &map);
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void multi16_map(address_map &map);
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};
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void multi16_state::video_start()
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MC6845_UPDATE_ROW(multi16_state::crtc_update_row)
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{
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}
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uint8_t *vram = reinterpret_cast<uint8_t *>(m_vram.target());
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#define mc6845_h_char_total (m_crtc_vreg[0])
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#define mc6845_h_display (m_crtc_vreg[1])
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#define mc6845_h_sync_pos (m_crtc_vreg[2])
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#define mc6845_sync_width (m_crtc_vreg[3])
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#define mc6845_v_char_total (m_crtc_vreg[4])
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#define mc6845_v_total_adj (m_crtc_vreg[5])
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#define mc6845_v_display (m_crtc_vreg[6])
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#define mc6845_v_sync_pos (m_crtc_vreg[7])
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#define mc6845_mode_ctrl (m_crtc_vreg[8])
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#define mc6845_tile_height (m_crtc_vreg[9]+1)
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#define mc6845_cursor_y_start (m_crtc_vreg[0x0a])
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#define mc6845_cursor_y_end (m_crtc_vreg[0x0b])
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#define mc6845_start_addr (((m_crtc_vreg[0x0c]<<8) & 0x3f00) | (m_crtc_vreg[0x0d] & 0xff))
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#define mc6845_cursor_addr (((m_crtc_vreg[0x0e]<<8) & 0x3f00) | (m_crtc_vreg[0x0f] & 0xff))
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#define mc6845_light_pen_addr (((m_crtc_vreg[0x10]<<8) & 0x3f00) | (m_crtc_vreg[0x11] & 0xff))
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#define mc6845_update_addr (((m_crtc_vreg[0x12]<<8) & 0x3f00) | (m_crtc_vreg[0x13] & 0xff))
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uint32_t multi16_state::screen_update_multi16(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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int x,y;
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int count;
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int xi;
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count = 0;
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for(y=0;y<mc6845_v_display*8;y++)
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for (int i = 0; i < x_count; i++)
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{
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for(x=0;x<(mc6845_h_display*8)/16;x++)
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offs_t offs = ((ra & 1) << 14) + (ma << 3) + ((ra >> 1) * 80) + i;
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// vram is from c0000 to effff, the ipl uses the last half
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uint8_t data_r = vram[3 * 0x8000 + offs];
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uint8_t data_g = vram[4 * 0x8000 + offs];
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uint8_t data_b = vram[5 * 0x8000 + offs];
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// draw 8 pixels of the character
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for (int x = 0; x < 8; x++)
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{
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for(xi=0;xi<16;xi++)
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{
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int dot = (bitswap<16>(m_p_vram[count],7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8) >> (15-xi)) & 0x1;
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int color = 0;
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color |= BIT(data_r, 7 - x) << 0;
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color |= BIT(data_g, 7 - x) << 1;
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color |= BIT(data_b, 7 - x) << 2;
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if(screen.visible_area().contains(x*16+xi, y))
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bitmap.pix16(y, x*16+xi) = m_palette->pen(dot);
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}
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count++;
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bitmap.pix32(y, x + i * 8) = m_palette->pens()[color];
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}
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}
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return 0;
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}
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void multi16_state::multi16_map(address_map &map)
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{
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map.unmap_value_high();
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map(0x00000, 0x7ffff).ram();
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map(0xd8000, 0xdffff).ram().share("p_vram");
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map(0xe0000, 0xeffff).ram();
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map(0x00000, 0x3ffff).ram();
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map(0x40000, 0x7ffff).noprw();
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map(0xc0000, 0xeffff).ram().share("vram");
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map(0xf0000, 0xf3fff).mirror(0xc000).rom().region("ipl", 0);
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}
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WRITE8_MEMBER( multi16_state::multi16_6845_address_w )
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{
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m_crtc_index = data;
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m_crtc->address_w(data);
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}
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WRITE8_MEMBER( multi16_state::multi16_6845_data_w )
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{
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m_crtc_vreg[m_crtc_index] = data;
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m_crtc->register_w(data);
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}
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void multi16_state::multi16_io(address_map &map)
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{
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map.unmap_value_high();
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map(0x02, 0x03).rw(m_pic, FUNC(pic8259_device::read), FUNC(pic8259_device::write)); // i8259
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map(0x40, 0x40).w(FUNC(multi16_state::multi16_6845_address_w));
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map(0x41, 0x41).w(FUNC(multi16_state::multi16_6845_data_w));
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// map(0x02, 0x03) // ?
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// map(0x06, 0x06) // ?
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// map(0x07, 0x07) // ?
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// map(0x08, 0x0b) // ?
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map(0x0c, 0x0f).rw(m_pit, FUNC(pit8253_device::read), FUNC(pit8253_device::write));
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map(0x40, 0x40).w(m_crtc, FUNC(hd6845_device::address_w));
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map(0x41, 0x41).rw(m_crtc, FUNC(hd6845_device::register_r), FUNC(hd6845_device::register_w));
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// map(0x42, 0x44) // ?
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// map(0x48, 0x48) // ?
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// map(0x4e, 0x4e) // ?
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// map(0x82, 0x82) // ?
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// map(0x92, 0x92) // ?
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}
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/* Input ports */
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@ -137,43 +145,55 @@ void multi16_state::machine_reset()
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{
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}
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static void multi16_floppies(device_slot_interface &device)
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{
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device.option_add("525qd", FLOPPY_525_QD);
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}
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void multi16_state::multi16(machine_config &config)
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{
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/* basic machine hardware */
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I8086(config, m_maincpu, 8000000);
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m_maincpu->set_addrmap(AS_PROGRAM, &multi16_state::multi16_map);
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m_maincpu->set_addrmap(AS_IO, &multi16_state::multi16_io);
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m_maincpu->set_irq_acknowledge_callback("pic8259", FUNC(pic8259_device::inta_cb));
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m_maincpu->set_irq_acknowledge_callback("pic", FUNC(pic8259_device::inta_cb));
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/* video hardware */
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PIC8259(config, m_pic);
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m_pic->out_int_callback().set_inputline(m_maincpu, 0);
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PIT8253(config, m_pit);
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// video hardware
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screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
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screen.set_refresh_hz(60);
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screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
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screen.set_size(640, 200);
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screen.set_visarea(0, 640-1, 0, 200-1);
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screen.set_screen_update(FUNC(multi16_state::screen_update_multi16));
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screen.set_palette(m_palette);
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screen.set_raw(16000000, 848, 0, 640, 518, 0, 400); // unknown clock
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screen.set_screen_update("crtc", FUNC(hd6845_device::screen_update));
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PALETTE(config, m_palette).set_entries(8);
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PALETTE(config, m_palette, palette_device::RGB_3BIT);
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/* devices */
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H46505(config, m_crtc, 16000000/5); /* unknown clock, hand tuned to get ~60 fps */
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HD6845(config, m_crtc, 2000000); // unknown clock
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m_crtc->set_screen("screen");
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m_crtc->set_show_border_area(false);
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m_crtc->set_char_width(8);
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m_crtc->set_update_row_callback(FUNC(multi16_state::crtc_update_row), this);
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PIC8259(config, m_pic, 0);
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m_pic->out_int_callback().set_inputline(m_maincpu, 0);
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// floppy
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MB8866(config, m_fdc, 2000000);
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FLOPPY_CONNECTOR(config, m_floppy[0], multi16_floppies, "525qd", floppy_image_device::default_floppy_formats);
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FLOPPY_CONNECTOR(config, m_floppy[1], multi16_floppies, nullptr, floppy_image_device::default_floppy_formats);
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}
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/* ROM definition */
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// MULTI16MODEL2-24
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ROM_START( multi16 )
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ROM_REGION( 0x4000, "ipl", ROMREGION_ERASEFF )
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ROM_LOAD( "ipl.rom", 0x0000, 0x4000, CRC(5beb5e94) SHA1(d3b9dc9a08995a0f26af9671893417e795370306))
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ROM_LOAD("ipl.rom", 0x0000, 0x4000, CRC(5beb5e94) SHA1(d3b9dc9a08995a0f26af9671893417e795370306))
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ROM_REGION(0x20000, "kanji", 0)
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ROM_LOAD("kanji.rom", 0x00000, 0x20000, NO_DUMP)
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ROM_END
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/* Driver */
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// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
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COMP( 1986, multi16, 0, 0, multi16, multi16, multi16_state, empty_init, "Mitsubishi", "Multi 16", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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COMP( 1984, multi16, 0, 0, multi16, multi16, multi16_state, empty_init, "Mitsubishi", "MULTI 16-II MP-1645", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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