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Diffstat (limited to 'src/mame/drivers/b16.cpp')
-rw-r--r--src/mame/drivers/b16.cpp310
1 files changed, 0 insertions, 310 deletions
diff --git a/src/mame/drivers/b16.cpp b/src/mame/drivers/b16.cpp
deleted file mode 100644
index 2b044eda37f..00000000000
--- a/src/mame/drivers/b16.cpp
+++ /dev/null
@@ -1,310 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Angelo Salese
-/***************************************************************************
-
- Hitachi B(asic Master?) 16
-
- very preliminary driver by Angelo Salese
-
- TODO:
- - Driver is all made up of educated guesses (no documentation available)
-
- 0xfcc67 after the ROM checksum to zero (bp 0xfc153 -> SI = 0) -> system boots
-
-****************************************************************************/
-
-#include "emu.h"
-#include "cpu/i86/i86.h"
-#include "machine/am9517a.h"
-#include "video/mc6845.h"
-#include "emupal.h"
-#include "screen.h"
-
-
-class b16_state : public driver_device
-{
-public:
- b16_state(const machine_config &mconfig, device_type type, const char *tag) :
- driver_device(mconfig, type, tag),
- m_vram(*this, "vram"),
- m_mc6845(*this, "crtc"),
- m_dma8237(*this, "8237dma"),
- m_maincpu(*this, "maincpu"),
- m_gfxdecode(*this, "gfxdecode"),
- m_palette(*this, "palette"),
- m_char_rom(*this, "pcg")
- { }
-
- void b16(machine_config &config);
-
-protected:
- virtual void video_start() override;
-
-private:
- uint8_t m_crtc_vreg[0x100], m_crtc_index;
-
- required_shared_ptr<uint16_t> m_vram;
- required_device<mc6845_device> m_mc6845;
- required_device<am9517a_device> m_dma8237;
- required_device<cpu_device> m_maincpu;
- required_device<gfxdecode_device> m_gfxdecode;
- required_device<palette_device> m_palette;
- required_region_ptr<uint8_t> m_char_rom;
-
- DECLARE_READ16_MEMBER(vblank_r);
- DECLARE_WRITE8_MEMBER(b16_pcg_w);
- DECLARE_WRITE8_MEMBER(b16_6845_address_w);
- DECLARE_WRITE8_MEMBER(b16_6845_data_w);
- DECLARE_READ8_MEMBER(unk_dev_r);
- DECLARE_WRITE8_MEMBER(unk_dev_w);
- DECLARE_READ8_MEMBER(memory_read_byte);
- DECLARE_WRITE8_MEMBER(memory_write_byte);
-
- uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-
- void b16_io(address_map &map);
- void b16_map(address_map &map);
-};
-
-#define mc6845_h_char_total (m_crtc_vreg[0])
-#define mc6845_h_display (m_crtc_vreg[1])
-#define mc6845_h_sync_pos (m_crtc_vreg[2])
-#define mc6845_sync_width (m_crtc_vreg[3])
-#define mc6845_v_char_total (m_crtc_vreg[4])
-#define mc6845_v_total_adj (m_crtc_vreg[5])
-#define mc6845_v_display (m_crtc_vreg[6])
-#define mc6845_v_sync_pos (m_crtc_vreg[7])
-#define mc6845_mode_ctrl (m_crtc_vreg[8])
-#define mc6845_tile_height (m_crtc_vreg[9]+1)
-#define mc6845_cursor_y_start (m_crtc_vreg[0x0a])
-#define mc6845_cursor_y_end (m_crtc_vreg[0x0b])
-#define mc6845_start_addr (((m_crtc_vreg[0x0c]<<8) & 0x3f00) | (m_crtc_vreg[0x0d] & 0xff))
-#define mc6845_cursor_addr (((m_crtc_vreg[0x0e]<<8) & 0x3f00) | (m_crtc_vreg[0x0f] & 0xff))
-#define mc6845_light_pen_addr (((m_crtc_vreg[0x10]<<8) & 0x3f00) | (m_crtc_vreg[0x11] & 0xff))
-#define mc6845_update_addr (((m_crtc_vreg[0x12]<<8) & 0x3f00) | (m_crtc_vreg[0x13] & 0xff))
-
-
-void b16_state::video_start()
-{
- save_item(NAME(m_crtc_vreg));
- save_item(NAME(m_crtc_index));
-}
-
-
-uint32_t b16_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- for(int y=0;y<mc6845_v_display;y++)
- {
- for(int x=0;x<mc6845_h_display;x++)
- {
- int tile = m_vram[x+y*mc6845_h_display] & 0xff;
- int color = (m_vram[x+y*mc6845_h_display] & 0x700) >> 8;
- int pen;
-
- for(int yi=0;yi<mc6845_tile_height;yi++)
- {
- for(int xi=0;xi<8;xi++)
- {
- pen = (m_char_rom[tile*16+yi] >> (7-xi) & 1) ? color : 0;
-
- if(y*mc6845_tile_height < 400 && x*8+xi < 640) /* TODO: safety check */
- bitmap.pix16(y*mc6845_tile_height+yi, x*8+xi) = m_palette->pen(pen);
- }
- }
- }
- }
-
- return 0;
-}
-
-WRITE8_MEMBER( b16_state::b16_pcg_w )
-{
- m_char_rom[offset] = data;
-
- m_gfxdecode->gfx(0)->mark_dirty(offset >> 4);
-}
-
-void b16_state::b16_map(address_map &map)
-{
- map.unmap_value_high();
- map(0x00000, 0x9ffff).ram(); // probably not all of it.
- map(0xa0000, 0xaffff).ram(); // bitmap?
- map(0xb0000, 0xb7fff).ram().share("vram"); // tvram
- map(0xb8000, 0xbbfff).w(FUNC(b16_state::b16_pcg_w)).umask16(0x00ff); // pcg
- map(0xfc000, 0xfffff).rom().region("ipl", 0);
-}
-
-READ16_MEMBER( b16_state::vblank_r )
-{
- return ioport("SYSTEM")->read();
-}
-
-WRITE8_MEMBER( b16_state::b16_6845_address_w )
-{
- m_crtc_index = data;
- m_mc6845->address_w(data);
-}
-
-WRITE8_MEMBER( b16_state::b16_6845_data_w )
-{
- m_crtc_vreg[m_crtc_index] = data;
- m_mc6845->register_w(data);
-}
-
-/*
-Pretty weird protocol, dunno what it is ...
-
-8a (06) W
-(04) R
-ff (04) W
-(04) R
-ff (04) W
-36 (0e) W
-ff (08) W
-ff (08) W
-06 (0e) W
-(08) R
-(08) R
-36 (0e) W
-40 (08) W
-9c (08) W
-76 (0e) W
-ff (0a) W
-ff (0a) W
-46 (0e) W
-(0a) R
-(0a) R
-76 (0e) W
-1a (0a) W
-00 (0a) W
-b6 (0e) W
-ff (0c) W
-ff (0c) W
-86 (0e) W
-(0c) R
-(0c) R
-b6 (0e) W
-34 (0c) W
-00 (0c) W
-36 (0e) W
-b6 (0e) W
-40 (08) W
-9c (08) W
-34 (0c) W
-00 (0c) W
-8a (06) W
-06 (06) W
-05 (06) W
-*/
-
-READ8_MEMBER( b16_state::unk_dev_r )
-{
- static int test;
-
- printf("(%02x) R\n",offset << 1);
-
- if(offset == 0x8/2 || offset == 0x0a/2 || offset == 0x0c/2) // quick hack
- {
- test^=1;
- return test ? 0x9f : 0x92;
- }
-
- return 0xff;
-}
-
-WRITE8_MEMBER( b16_state::unk_dev_w )
-{
- printf("%02x (%02x) W\n",data,offset << 1);
-
-}
-
-void b16_state::b16_io(address_map &map)
-{
- map.unmap_value_high();
- map(0x00, 0x0f).rw(FUNC(b16_state::unk_dev_r), FUNC(b16_state::unk_dev_w)).umask16(0x00ff); // DMA device?
- map(0x20, 0x20).w(FUNC(b16_state::b16_6845_address_w));
- map(0x22, 0x22).w(FUNC(b16_state::b16_6845_data_w));
- //0x79 bit 0 DSW?
- map(0x80, 0x81).r(FUNC(b16_state::vblank_r)); // TODO
-}
-
-
-/* Input ports */
-static INPUT_PORTS_START( b16 )
- PORT_START("SYSTEM")
- PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen")
-INPUT_PORTS_END
-
-
-
-
-static const gfx_layout b16_charlayout =
-{
- 8, 16,
- RGN_FRAC(1,1),
- 1,
- { 0 },
- { STEP8(0,1) },
- { STEP16(0,8) },
- 8*16
-};
-
-static GFXDECODE_START( gfx_b16 )
- GFXDECODE_ENTRY( "pcg", 0x0000, b16_charlayout, 0, 1 )
-GFXDECODE_END
-
-READ8_MEMBER(b16_state::memory_read_byte)
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM);
- return prog_space.read_byte(offset);
-}
-
-WRITE8_MEMBER(b16_state::memory_write_byte)
-{
- address_space& prog_space = m_maincpu->space(AS_PROGRAM);
- return prog_space.write_byte(offset, data);
-}
-
-
-void b16_state::b16(machine_config &config)
-{
- /* basic machine hardware */
- I8086(config, m_maincpu, XTAL(14'318'181)/2); //unknown xtal
- m_maincpu->set_addrmap(AS_PROGRAM, &b16_state::b16_map);
- m_maincpu->set_addrmap(AS_IO, &b16_state::b16_io);
-
- /* video hardware */
- screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
- screen.set_refresh_hz(60);
- screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
- screen.set_screen_update(FUNC(b16_state::screen_update));
- screen.set_size(640, 400);
- screen.set_visarea_full();
- screen.set_palette(m_palette);
-
- MC6845(config, m_mc6845, XTAL(14'318'181)/5); /* unknown variant, unknown clock, hand tuned to get ~60 fps */
- m_mc6845->set_screen("screen");
- m_mc6845->set_show_border_area(false);
- m_mc6845->set_char_width(8);
-
- AM9517A(config, m_dma8237, XTAL(14'318'181)/2);
- m_dma8237->in_memr_callback().set(FUNC(b16_state::memory_read_byte));
- m_dma8237->out_memw_callback().set(FUNC(b16_state::memory_write_byte));
-
- GFXDECODE(config, m_gfxdecode, m_palette, gfx_b16);
- PALETTE(config, m_palette).set_entries(8);
-// MCFG_PALETTE_INIT_STANDARD(black_and_white) // TODO
-}
-
-/* ROM definition */
-ROM_START( b16 )
- ROM_REGION16_LE( 0x4000, "ipl", ROMREGION_ERASEFF )
- ROM_LOAD( "ipl.rom", 0x0000, 0x4000, CRC(7c1c93d5) SHA1(2a1e63a689c316ff836f21646166b38714a18e03) )
-
- ROM_REGION( 0x4000/2, "pcg", ROMREGION_ERASE00 )
-ROM_END
-
-/* Driver */
-
-/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
-COMP( 1983, b16, 0, 0, b16, b16, b16_state, empty_init, "Hitachi", "B16", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)