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(MESS) cd2650 : some more tidy up (nw)
This commit is contained in:
Robbbert
parent
a31774ab7c
commit
47fc2d3989
@ -2,22 +2,29 @@
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// copyright-holders:Robbbert
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/***************************************************************************
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Central Data cd2650
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Central Data cd2650
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2010-04-08 Skeleton driver.
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2010-04-08 Skeleton driver.
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No info available on this computer apart from a few newsletters.
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The system only uses 1000-14FF for videoram and 17F0-17FF for
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scratch ram. All other ram is optional.
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No info available on this computer apart from a few newsletters.
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The system only uses 1000-14FF for videoram and 17F0-17FF for
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scratch ram. All other ram is optional.
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All commands must be in upper case. See the RAVENS2 driver for
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a list of the monitor commands. Some commands have slightly different
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numeric inputs, and the D command doesn't seem to work.
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Commands (must be in uppercase):
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A Examine memory; press C to alter memory
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B Set breakpoint?
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C View breakpoint?
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D Dump to tape
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E Execute
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I ?
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L Load
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R ?
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V Verify?
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Press Esc to exit most commands.
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TODO
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- Lots, probably. The computer is a complete mystery. No pictures,
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manuals or schematics exist.
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- Cassette interface to be tested - no idea what the command syntax is for saving.
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TODO
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- Lots, probably. The computer is a complete mystery. No manuals or schematics exist.
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- Cassette doesn't work.
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****************************************************************************/
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@ -34,11 +41,11 @@ class cd2650_state : public driver_device
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{
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public:
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cd2650_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_p_videoram(*this, "videoram"),
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m_beep(*this, "beeper"),
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m_cass(*this, "cassette")
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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_beep(*this, "beeper")
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, m_cass(*this, "cassette")
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{ }
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DECLARE_READ8_MEMBER(keyin_r);
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@ -46,14 +53,15 @@ public:
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DECLARE_WRITE8_MEMBER(kbd_put);
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DECLARE_READ8_MEMBER(cass_r);
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DECLARE_WRITE8_MEMBER(cass_w);
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DECLARE_QUICKLOAD_LOAD_MEMBER( cd2650 );
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DECLARE_QUICKLOAD_LOAD_MEMBER(cd2650);
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const UINT8 *m_p_chargen;
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UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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required_shared_ptr<UINT8> m_p_videoram;
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private:
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UINT8 m_term_data;
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virtual void machine_reset();
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virtual void video_start();
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UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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required_device<cpu_device> m_maincpu;
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required_shared_ptr<const UINT8> m_p_videoram;
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required_device<beep_device> m_beep;
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required_device<cassette_image_device> m_cass;
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};
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@ -84,8 +92,7 @@ READ8_MEMBER( cd2650_state::keyin_r )
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static ADDRESS_MAP_START(cd2650_mem, AS_PROGRAM, 8, cd2650_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE( 0x0000, 0x03ff) AM_ROM
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AM_RANGE( 0x0400, 0x0fff) AM_RAM
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AM_RANGE( 0x0000, 0x03ff) AM_ROM AM_REGION("roms", 0)
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AM_RANGE( 0x1000, 0x7fff) AM_RAM AM_SHARE("videoram")
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ADDRESS_MAP_END
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@ -163,15 +170,15 @@ UINT32 cd2650_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap,
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/* F4 Character Displayer */
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static const gfx_layout cd2650_charlayout =
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{
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8, 8, /* 8 x 12 characters */
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64, /* 256 characters */
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8, 8, /* 8 x 8 characters */
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192, /* 64 characters in char.rom + 128 characters in char2.rom */
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1, /* 1 bits per pixel */
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{ 0 }, /* no bitplanes */
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/* x offsets */
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{ 0, 1, 2, 3, 4, 5, 6, 7 },
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/* y offsets */
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{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
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8*8 /* every char takes 16 bytes */
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8*8 /* every char takes 8 bytes */
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};
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static GFXDECODE_START( cd2650 )
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@ -191,29 +198,23 @@ static ASCII_KEYBOARD_INTERFACE( keyboard_intf )
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QUICKLOAD_LOAD_MEMBER( cd2650_state, cd2650 )
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{
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address_space &space = m_maincpu->space(AS_PROGRAM);
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int i;
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int quick_addr = 0x440;
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int exec_addr;
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int quick_length;
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UINT8 *quick_data;
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int read_;
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int result = IMAGE_INIT_FAIL;
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int i, result = IMAGE_INIT_FAIL;
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quick_length = image.length();
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if (quick_length < 0x0444)
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int quick_length = image.length();
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if (quick_length < 0x1500)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too short");
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image.message(" File too short");
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}
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else if (quick_length > 0x8000)
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else
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if (quick_length > 0x8000)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too long");
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image.message(" File too long");
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}
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else
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{
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quick_data = (UINT8*)malloc(quick_length);
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UINT8 *quick_data = (UINT8*)malloc(quick_length);
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if (!quick_data)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Cannot open file");
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@ -221,20 +222,21 @@ QUICKLOAD_LOAD_MEMBER( cd2650_state, cd2650 )
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}
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else
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{
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read_ = image.fread( quick_data, quick_length);
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int read_ = image.fread( quick_data, quick_length);
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if (read_ != quick_length)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Cannot read the file");
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image.message(" Cannot read the file");
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}
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else if (quick_data[0] != 0x40)
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else
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if (quick_data[0] != 0x40)
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{
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image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Invalid header");
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image.message(" Invalid header");
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}
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else
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{
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exec_addr = quick_data[1] * 256 + quick_data[2];
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int exec_addr = quick_data[1] * 256 + quick_data[2];
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if (exec_addr >= quick_length)
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{
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@ -243,24 +245,17 @@ QUICKLOAD_LOAD_MEMBER( cd2650_state, cd2650 )
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}
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else
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{
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read_ = 0x1000;
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if (quick_length < 0x1000)
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read_ = quick_length;
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for (i = quick_addr; i < read_; i++)
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space.write_byte(i, quick_data[i]);
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// do not overwite system area (17E0-17FF) otherwise chess3 has problems
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read_ = 0x17e0;
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if (quick_length < 0x17e0)
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read_ = quick_length;
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if (quick_length > 0x14ff)
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for (i = 0x1500; i < read_; i++)
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space.write_byte(i, quick_data[i]);
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for (i = 0x1500; i < read_; i++)
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m_p_videoram[i-0x1000] = quick_data[i];
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if (quick_length > 0x17ff)
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for (i = 0x1800; i < quick_length; i++)
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space.write_byte(i, quick_data[i]);
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m_p_videoram[i-0x1000] = quick_data[i];
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/* display a message about the loaded quickload */
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image.message(" Quickload: size=%04X : exec=%04X",quick_length,exec_addr);
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@ -296,42 +291,40 @@ static MACHINE_CONFIG_START( cd2650, cd2650_state )
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MCFG_PALETTE_LENGTH(2)
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MCFG_PALETTE_INIT_OVERRIDE(driver_device, black_and_white)
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MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf)
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/* quickload */
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MCFG_QUICKLOAD_ADD("quickload", cd2650_state, cd2650, "pgm", 1)
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/* cassette */
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MCFG_CASSETTE_ADD( "cassette", default_cassette_interface )
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/* Sound */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
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MCFG_SOUND_ADD("beeper", BEEP, 0)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
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/* Devices */
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MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf)
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MCFG_CASSETTE_ADD( "cassette", default_cassette_interface )
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MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( cd2650 )
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ROM_REGION( 0x8000, "maincpu", ROMREGION_ERASEFF )
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ROM_REGION( 0x0400, "roms", 0 )
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ROM_LOAD( "cd2650.rom", 0x0000, 0x0400, CRC(5397328e) SHA1(7106fdb60e1ad2bc5e8e45527f348c23296e8d6a))
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ROM_REGION( 0x0200, "chargen", 0 )
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ROM_REGION( 0x0600, "chargen", 0 )
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ROM_LOAD( "char.rom", 0x0000, 0x0200, CRC(9b75db2a) SHA1(4367c01afa503d7cba0c38078fde0b95392c6c2c))
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ROM_LOAD_OPTIONAL( "char2.rom", 0x0200, 0x0400, CRC(b450eea8) SHA1(c1bdba52c2dc5698cad03b6b884b942a083465ed)) // not used
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// various unused roms found on Amigan site
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ROM_REGION( 0xea00, "user1", 0 )
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ROM_LOAD( "char2.rom", 0x0000, 0x0400, CRC(b450eea8) SHA1(c1bdba52c2dc5698cad03b6b884b942a083465ed))
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ROM_LOAD( "supervisor.bin", 0x0400, 0x03ff, CRC(2bcbced4) SHA1(cec7582ba0a908d4ef39f9bd6bfa33a282b88c71))
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ROM_LOAD( "01a_cd_boots.bin", 0x6c00, 0x0200, CRC(5336c62f) SHA1(e94cf7be01ea806ff7c7b90aee1a4e88f4f1ba9f))
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ROM_LOAD( "01a_cd_dos.bin", 0x1000, 0x2000, CRC(3f177cdd) SHA1(01afd77ad2f065158cbe032aa26682cb20afe7d8))
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ROM_LOAD( "01a_cd_pop.bin", 0x3000, 0x1000, CRC(d8f44f11) SHA1(605ab5a045290fa5b99ff4fc8fbfa2a3f202578f))
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ROM_LOAD( "01b_cd_alp.bin", 0x4000, 0x2a00, CRC(b05568bb) SHA1(29e74633c0cd731c0be25313288cfffdae374236))
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ROM_LOAD( "01b_cd_basic.bin", 0x7000, 0x3b00, CRC(0cf1e3d8) SHA1(3421e679c238aeea49cd170b34a6f344da4770a6))
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ROM_LOAD( "01b_cd_mon_m.bin", 0x0800, 0x0400, CRC(f6f19c08) SHA1(1984d85d57fc2a6c5a3bd51fbc58540d7129a0ae))
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ROM_LOAD( "01b_cd_mon_o.bin", 0x0c00, 0x0400, CRC(9d40b4dc) SHA1(35cffcbd983b7b37c878a15af44100568d0659d1))
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ROM_LOAD( "02b_cd_alp.bin", 0xc000, 0x2a00, CRC(a66b7f32) SHA1(2588f9244b0ec6b861dcebe666d37d3fa88dd043))
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ROM_REGION( 0xc900, "user1", 0 )
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ROM_LOAD_OPTIONAL( "01a_cd_boots.bin", 0x0000, 0x0200, CRC(5336c62f) SHA1(e94cf7be01ea806ff7c7b90aee1a4e88f4f1ba9f))
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ROM_LOAD_OPTIONAL( "01a_cd_dos.bin", 0x0200, 0x2000, CRC(3f177cdd) SHA1(01afd77ad2f065158cbe032aa26682cb20afe7d8))
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ROM_LOAD_OPTIONAL( "01a_cd_pop.bin", 0x2200, 0x1000, CRC(d8f44f11) SHA1(605ab5a045290fa5b99ff4fc8fbfa2a3f202578f))
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ROM_LOAD_OPTIONAL( "01b_cd_alp.bin", 0x3200, 0x2a00, CRC(b05568bb) SHA1(29e74633c0cd731c0be25313288cfffdae374236))
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ROM_LOAD_OPTIONAL( "01b_cd_basic.bin", 0x5c00, 0x3b00, CRC(0cf1e3d8) SHA1(3421e679c238aeea49cd170b34a6f344da4770a6))
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ROM_LOAD_OPTIONAL( "01b_cd_mon_m.bin", 0x9700, 0x0400, CRC(f6f19c08) SHA1(1984d85d57fc2a6c5a3bd51fbc58540d7129a0ae))
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ROM_LOAD_OPTIONAL( "01b_cd_mon_o.bin", 0x9b00, 0x0400, CRC(9d40b4dc) SHA1(35cffcbd983b7b37c878a15af44100568d0659d1))
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ROM_LOAD_OPTIONAL( "02b_cd_alp.bin", 0x9f00, 0x2a00, CRC(a66b7f32) SHA1(2588f9244b0ec6b861dcebe666d37d3fa88dd043))
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ROM_END
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/* Driver */
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