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https://github.com/holub/mame
synced 2025-04-24 01:11:11 +03:00
(nw) cdc721 : bit of guesswork
This commit is contained in:
Robbbert
parent
9c399e336c
commit
b0b77296c9
@ -11,6 +11,7 @@ Control Data Corporation CDC 721 Terminal (Viking)
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#include "emu.h"
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#include "cpu/z80/z80.h"
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#include "video/tms9927.h"
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#include "screen.h"
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@ -19,30 +20,35 @@ class cdc721_state : public driver_device
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public:
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cdc721_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_p_videoram(*this, "videoram")
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, m_maincpu(*this, "maincpu")
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, m_p_chargen(*this, "chargen")
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{
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}
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, m_p_videoram(*this, "videoram")
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{ }
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uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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DECLARE_DRIVER_INIT(init);
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DECLARE_PALETTE_INIT(cdc721);
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// DECLARE_WRITE8_MEMBER(port70_w) { membank("bankr0")->set_entry(BIT(data, 3)); }
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private:
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u8 m_flashcnt;
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virtual void machine_reset() override;
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required_shared_ptr<uint8_t> m_p_videoram;
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required_device<cpu_device> m_maincpu;
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required_region_ptr<u8> m_p_chargen;
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required_shared_ptr<u8> m_p_videoram;
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};
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static ADDRESS_MAP_START( cdc721_mem, AS_PROGRAM, 8, cdc721_state )
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AM_RANGE(0x0000, 0x3fff) AM_ROM AM_REGION("maincpu", 0)
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AM_RANGE(0x4000, 0xf097) AM_RAM
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AM_RANGE(0xf098, 0xffff) AM_RAM AM_SHARE("videoram")
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static ADDRESS_MAP_START( mem_map, AS_PROGRAM, 8, cdc721_state )
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AM_RANGE(0x0000, 0x4fff) AM_ROM AM_REGION("maincpu", 0x10000)
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// AM_RANGE(0x0000, 0x4fff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0")
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AM_RANGE(0x8000, 0xe10f) AM_RAM
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AM_RANGE(0xe110, 0xffff) AM_RAM AM_SHARE("videoram")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( cdc721_io, AS_IO, 8, cdc721_state )
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static ADDRESS_MAP_START( io_map, AS_IO, 8, cdc721_state )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0x10, 0x1f) AM_DEVREADWRITE("crtc", tms9927_device, read, write)
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// AM_RANGE(0x70, 0x70) AM_WRITE(port70_w)
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ADDRESS_MAP_END
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static INPUT_PORTS_START( cdc721 )
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@ -50,6 +56,17 @@ INPUT_PORTS_END
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void cdc721_state::machine_reset()
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{
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// membank("bankr0")->set_entry(0);
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// membank("bankw0")->set_entry(0);
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}
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DRIVER_INIT_MEMBER( cdc721_state, init )
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{
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// uint8_t *main = memregion("maincpu")->base();
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// membank("bankr0")->configure_entry(1, &main[0x14000]);
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// membank("bankr0")->configure_entry(0, &main[0x4000]);
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// membank("bankw0")->configure_entry(0, &main[0x4000]);
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}
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/* F4 Character Displayer */
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@ -80,33 +97,45 @@ PALETTE_INIT_MEMBER( cdc721_state, cdc721 )
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uint32_t cdc721_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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uint8_t y,ra,chr,gfx;
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uint8_t y,ra,chr,gfx,attr,pen;
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uint16_t sy=0,ma=0,x;
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m_flashcnt++;
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for (y = 0; y < 24; y++)
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for (y = 0; y < 30; y++)
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{
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for (ra = 3; ra < 13; ra++)
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for (ra = 0; ra < 16; ra++)
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{
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uint16_t *p = &bitmap.pix16(sy++);
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for (x = 0; x < 160; x+=2)
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{
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pen = 1;
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chr = m_p_videoram[x+ma];
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attr = m_p_videoram[x+ma+1];
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gfx = m_p_chargen[chr | (ra << 8) ];
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if (BIT(attr, 0)) // blank
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pen = 0;
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if (BIT(attr, 1) && (ra == 14)) // underline
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gfx = 0xff;
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if (BIT(attr, 4)) // dim
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pen = 2;
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if (BIT(attr, 2)) // rv
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gfx ^= 0xff;
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if (BIT(attr, 3) && BIT(m_flashcnt, 6)) // blink
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gfx = 0;
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/* Display a scanline of a character */
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*p++ = BIT(gfx, 0);
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*p++ = BIT(gfx, 1);
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*p++ = BIT(gfx, 2);
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*p++ = BIT(gfx, 3);
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*p++ = BIT(gfx, 4);
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*p++ = BIT(gfx, 5);
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*p++ = BIT(gfx, 6);
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*p++ = BIT(gfx, 7);
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*p++ = BIT(gfx, 0) ? pen : 0;
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*p++ = BIT(gfx, 1) ? pen : 0;
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*p++ = BIT(gfx, 2) ? pen : 0;
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*p++ = BIT(gfx, 3) ? pen : 0;
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*p++ = BIT(gfx, 4) ? pen : 0;
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*p++ = BIT(gfx, 5) ? pen : 0;
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*p++ = BIT(gfx, 6) ? pen : 0;
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*p++ = BIT(gfx, 7) ? pen : 0;
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}
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}
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ma+=160;
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ma+=264;
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}
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return 0;
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}
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@ -114,31 +143,37 @@ uint32_t cdc721_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap
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static MACHINE_CONFIG_START( cdc721 )
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// basic machine hardware
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MCFG_CPU_ADD("maincpu", Z80, 4000000)
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MCFG_CPU_PROGRAM_MAP(cdc721_mem)
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MCFG_CPU_IO_MAP(cdc721_io)
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MCFG_CPU_PROGRAM_MAP(mem_map)
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MCFG_CPU_IO_MAP(io_map)
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/* video hardware */
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MCFG_SCREEN_ADD("screen", RASTER)
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MCFG_SCREEN_REFRESH_RATE(60)
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
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MCFG_SCREEN_UPDATE_DRIVER(cdc721_state, screen_update)
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MCFG_SCREEN_SIZE(640, 240)
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MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 239)
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MCFG_SCREEN_SIZE(640, 480)
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MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 479)
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MCFG_SCREEN_PALETTE("palette")
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MCFG_PALETTE_ADD("palette", 3)
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MCFG_PALETTE_INIT_OWNER(cdc721_state, cdc721)
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MCFG_GFXDECODE_ADD("gfxdecode", "palette", cdc721)
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MCFG_DEVICE_ADD("crtc", TMS9927, 2000000) // clock guess
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MCFG_TMS9927_CHAR_WIDTH(8)
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MACHINE_CONFIG_END
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ROM_START( cdc721 )
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ROM_REGION( 0x6000, "maincpu", 0 )
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ROM_LOAD( "66315359", 0x0000, 0x2000, CRC(20ff3eb4) SHA1(5f15cb14893d75a46dc66d3042356bb054d632c2) )
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ROM_LOAD( "66315361", 0x2000, 0x2000, CRC(21d59d09) SHA1(9c087537d68c600ddf1eb9b009cf458231c279f4) )
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ROM_LOAD( "66315360", 0x4000, 0x1000, CRC(feaa0fc5) SHA1(f06196553a1f10c07b2f7e495823daf7ea26edee) ) // rom @ 4000
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ROM_LOAD( "66307828", 0x5000, 0x1000, CRC(ac97136f) SHA1(0d280e1aa4b9502bd390d260f83af19bf24905cd) ) // keyboard
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ROM_REGION( 0x15000, "maincpu", 0 )
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ROM_LOAD( "66315359", 0x10000, 0x2000, CRC(20ff3eb4) SHA1(5f15cb14893d75a46dc66d3042356bb054d632c2) )
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ROM_LOAD( "66315361", 0x12000, 0x2000, CRC(21d59d09) SHA1(9c087537d68c600ddf1eb9b009cf458231c279f4) )
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ROM_LOAD( "66315360", 0x14000, 0x1000, CRC(feaa0fc5) SHA1(f06196553a1f10c07b2f7e495823daf7ea26edee) )
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//ROM_FILL(0x14157,1,0xe0)
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ROM_REGION( 0x1000, "keyboard", 0 )
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ROM_LOAD( "66307828", 0x0000, 0x1000, CRC(ac97136f) SHA1(0d280e1aa4b9502bd390d260f83af19bf24905cd) ) // keyboard lookup
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ROM_REGION( 0x1000, "chargen", 0 )
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ROM_LOAD( "66315039", 0x0000, 0x1000, CRC(5c9aa968) SHA1(3ec7c5f25562579e6ed3fda7562428ff5e6b9550) ) // chargen
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ROM_LOAD( "66315039", 0x0000, 0x1000, CRC(5c9aa968) SHA1(3ec7c5f25562579e6ed3fda7562428ff5e6b9550) )
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ROM_END
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COMP( 1981, cdc721, 0, 0, cdc721, cdc721, cdc721_state, 0, "Control Data Corporation", "CDC721 Terminal", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )
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COMP( 1981, cdc721, 0, 0, cdc721, cdc721, cdc721_state, init, "Control Data Corporation", "CDC721 Terminal", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )
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