diff --git a/src/mess/drivers/cd2650.c b/src/mess/drivers/cd2650.c index 1b1dd3df492..ef6e3045960 100644 --- a/src/mess/drivers/cd2650.c +++ b/src/mess/drivers/cd2650.c @@ -2,22 +2,29 @@ // copyright-holders:Robbbert /*************************************************************************** - Central Data cd2650 +Central Data cd2650 - 2010-04-08 Skeleton driver. +2010-04-08 Skeleton driver. - No info available on this computer apart from a few newsletters. - The system only uses 1000-14FF for videoram and 17F0-17FF for - scratch ram. All other ram is optional. +No info available on this computer apart from a few newsletters. +The system only uses 1000-14FF for videoram and 17F0-17FF for +scratch ram. All other ram is optional. - All commands must be in upper case. See the RAVENS2 driver for - a list of the monitor commands. Some commands have slightly different - numeric inputs, and the D command doesn't seem to work. +Commands (must be in uppercase): +A Examine memory; press C to alter memory +B Set breakpoint? +C View breakpoint? +D Dump to tape +E Execute +I ? +L Load +R ? +V Verify? +Press Esc to exit most commands. - TODO - - Lots, probably. The computer is a complete mystery. No pictures, - manuals or schematics exist. - - Cassette interface to be tested - no idea what the command syntax is for saving. +TODO +- Lots, probably. The computer is a complete mystery. No manuals or schematics exist. +- Cassette doesn't work. ****************************************************************************/ @@ -34,11 +41,11 @@ class cd2650_state : public driver_device { public: cd2650_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag), - m_maincpu(*this, "maincpu"), - m_p_videoram(*this, "videoram"), - m_beep(*this, "beeper"), - m_cass(*this, "cassette") + : driver_device(mconfig, type, tag) + , m_p_videoram(*this, "videoram") + , m_maincpu(*this, "maincpu") + , m_beep(*this, "beeper") + , m_cass(*this, "cassette") { } DECLARE_READ8_MEMBER(keyin_r); @@ -46,14 +53,15 @@ public: DECLARE_WRITE8_MEMBER(kbd_put); DECLARE_READ8_MEMBER(cass_r); DECLARE_WRITE8_MEMBER(cass_w); - DECLARE_QUICKLOAD_LOAD_MEMBER( cd2650 ); + DECLARE_QUICKLOAD_LOAD_MEMBER(cd2650); const UINT8 *m_p_chargen; + UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + required_shared_ptr m_p_videoram; +private: UINT8 m_term_data; virtual void machine_reset(); virtual void video_start(); - UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); required_device m_maincpu; - required_shared_ptr m_p_videoram; required_device m_beep; required_device m_cass; }; @@ -84,8 +92,7 @@ READ8_MEMBER( cd2650_state::keyin_r ) static ADDRESS_MAP_START(cd2650_mem, AS_PROGRAM, 8, cd2650_state) ADDRESS_MAP_UNMAP_HIGH - AM_RANGE( 0x0000, 0x03ff) AM_ROM - AM_RANGE( 0x0400, 0x0fff) AM_RAM + AM_RANGE( 0x0000, 0x03ff) AM_ROM AM_REGION("roms", 0) AM_RANGE( 0x1000, 0x7fff) AM_RAM AM_SHARE("videoram") ADDRESS_MAP_END @@ -163,15 +170,15 @@ UINT32 cd2650_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, /* F4 Character Displayer */ static const gfx_layout cd2650_charlayout = { - 8, 8, /* 8 x 12 characters */ - 64, /* 256 characters */ + 8, 8, /* 8 x 8 characters */ + 192, /* 64 characters in char.rom + 128 characters in char2.rom */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* y offsets */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, - 8*8 /* every char takes 16 bytes */ + 8*8 /* every char takes 8 bytes */ }; static GFXDECODE_START( cd2650 ) @@ -191,29 +198,23 @@ static ASCII_KEYBOARD_INTERFACE( keyboard_intf ) QUICKLOAD_LOAD_MEMBER( cd2650_state, cd2650 ) { - address_space &space = m_maincpu->space(AS_PROGRAM); - int i; - int quick_addr = 0x440; - int exec_addr; - int quick_length; - UINT8 *quick_data; - int read_; - int result = IMAGE_INIT_FAIL; + int i, result = IMAGE_INIT_FAIL; - quick_length = image.length(); - if (quick_length < 0x0444) + int quick_length = image.length(); + if (quick_length < 0x1500) { image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too short"); image.message(" File too short"); } - else if (quick_length > 0x8000) + else + if (quick_length > 0x8000) { image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too long"); image.message(" File too long"); } else { - quick_data = (UINT8*)malloc(quick_length); + UINT8 *quick_data = (UINT8*)malloc(quick_length); if (!quick_data) { image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Cannot open file"); @@ -221,20 +222,21 @@ QUICKLOAD_LOAD_MEMBER( cd2650_state, cd2650 ) } else { - read_ = image.fread( quick_data, quick_length); + int read_ = image.fread( quick_data, quick_length); if (read_ != quick_length) { image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Cannot read the file"); image.message(" Cannot read the file"); } - else if (quick_data[0] != 0x40) + else + if (quick_data[0] != 0x40) { image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Invalid header"); image.message(" Invalid header"); } else { - exec_addr = quick_data[1] * 256 + quick_data[2]; + int exec_addr = quick_data[1] * 256 + quick_data[2]; if (exec_addr >= quick_length) { @@ -243,24 +245,17 @@ QUICKLOAD_LOAD_MEMBER( cd2650_state, cd2650 ) } else { - read_ = 0x1000; - if (quick_length < 0x1000) - read_ = quick_length; - - for (i = quick_addr; i < read_; i++) - space.write_byte(i, quick_data[i]); - + // do not overwite system area (17E0-17FF) otherwise chess3 has problems read_ = 0x17e0; if (quick_length < 0x17e0) read_ = quick_length; - if (quick_length > 0x14ff) - for (i = 0x1500; i < read_; i++) - space.write_byte(i, quick_data[i]); + for (i = 0x1500; i < read_; i++) + m_p_videoram[i-0x1000] = quick_data[i]; if (quick_length > 0x17ff) for (i = 0x1800; i < quick_length; i++) - space.write_byte(i, quick_data[i]); + m_p_videoram[i-0x1000] = quick_data[i]; /* display a message about the loaded quickload */ image.message(" Quickload: size=%04X : exec=%04X",quick_length,exec_addr); @@ -296,42 +291,40 @@ static MACHINE_CONFIG_START( cd2650, cd2650_state ) MCFG_PALETTE_LENGTH(2) MCFG_PALETTE_INIT_OVERRIDE(driver_device, black_and_white) - MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf) - /* quickload */ MCFG_QUICKLOAD_ADD("quickload", cd2650_state, cd2650, "pgm", 1) - /* cassette */ - MCFG_CASSETTE_ADD( "cassette", default_cassette_interface ) - /* Sound */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette") MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) MCFG_SOUND_ADD("beeper", BEEP, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) + + /* Devices */ + MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf) + MCFG_CASSETTE_ADD( "cassette", default_cassette_interface ) MACHINE_CONFIG_END /* ROM definition */ ROM_START( cd2650 ) - ROM_REGION( 0x8000, "maincpu", ROMREGION_ERASEFF ) + ROM_REGION( 0x0400, "roms", 0 ) ROM_LOAD( "cd2650.rom", 0x0000, 0x0400, CRC(5397328e) SHA1(7106fdb60e1ad2bc5e8e45527f348c23296e8d6a)) - ROM_REGION( 0x0200, "chargen", 0 ) + ROM_REGION( 0x0600, "chargen", 0 ) ROM_LOAD( "char.rom", 0x0000, 0x0200, CRC(9b75db2a) SHA1(4367c01afa503d7cba0c38078fde0b95392c6c2c)) + ROM_LOAD_OPTIONAL( "char2.rom", 0x0200, 0x0400, CRC(b450eea8) SHA1(c1bdba52c2dc5698cad03b6b884b942a083465ed)) // not used // various unused roms found on Amigan site - ROM_REGION( 0xea00, "user1", 0 ) - ROM_LOAD( "char2.rom", 0x0000, 0x0400, CRC(b450eea8) SHA1(c1bdba52c2dc5698cad03b6b884b942a083465ed)) - ROM_LOAD( "supervisor.bin", 0x0400, 0x03ff, CRC(2bcbced4) SHA1(cec7582ba0a908d4ef39f9bd6bfa33a282b88c71)) - ROM_LOAD( "01a_cd_boots.bin", 0x6c00, 0x0200, CRC(5336c62f) SHA1(e94cf7be01ea806ff7c7b90aee1a4e88f4f1ba9f)) - ROM_LOAD( "01a_cd_dos.bin", 0x1000, 0x2000, CRC(3f177cdd) SHA1(01afd77ad2f065158cbe032aa26682cb20afe7d8)) - ROM_LOAD( "01a_cd_pop.bin", 0x3000, 0x1000, CRC(d8f44f11) SHA1(605ab5a045290fa5b99ff4fc8fbfa2a3f202578f)) - ROM_LOAD( "01b_cd_alp.bin", 0x4000, 0x2a00, CRC(b05568bb) SHA1(29e74633c0cd731c0be25313288cfffdae374236)) - ROM_LOAD( "01b_cd_basic.bin", 0x7000, 0x3b00, CRC(0cf1e3d8) SHA1(3421e679c238aeea49cd170b34a6f344da4770a6)) - ROM_LOAD( "01b_cd_mon_m.bin", 0x0800, 0x0400, CRC(f6f19c08) SHA1(1984d85d57fc2a6c5a3bd51fbc58540d7129a0ae)) - ROM_LOAD( "01b_cd_mon_o.bin", 0x0c00, 0x0400, CRC(9d40b4dc) SHA1(35cffcbd983b7b37c878a15af44100568d0659d1)) - ROM_LOAD( "02b_cd_alp.bin", 0xc000, 0x2a00, CRC(a66b7f32) SHA1(2588f9244b0ec6b861dcebe666d37d3fa88dd043)) + ROM_REGION( 0xc900, "user1", 0 ) + ROM_LOAD_OPTIONAL( "01a_cd_boots.bin", 0x0000, 0x0200, CRC(5336c62f) SHA1(e94cf7be01ea806ff7c7b90aee1a4e88f4f1ba9f)) + ROM_LOAD_OPTIONAL( "01a_cd_dos.bin", 0x0200, 0x2000, CRC(3f177cdd) SHA1(01afd77ad2f065158cbe032aa26682cb20afe7d8)) + ROM_LOAD_OPTIONAL( "01a_cd_pop.bin", 0x2200, 0x1000, CRC(d8f44f11) SHA1(605ab5a045290fa5b99ff4fc8fbfa2a3f202578f)) + ROM_LOAD_OPTIONAL( "01b_cd_alp.bin", 0x3200, 0x2a00, CRC(b05568bb) SHA1(29e74633c0cd731c0be25313288cfffdae374236)) + ROM_LOAD_OPTIONAL( "01b_cd_basic.bin", 0x5c00, 0x3b00, CRC(0cf1e3d8) SHA1(3421e679c238aeea49cd170b34a6f344da4770a6)) + ROM_LOAD_OPTIONAL( "01b_cd_mon_m.bin", 0x9700, 0x0400, CRC(f6f19c08) SHA1(1984d85d57fc2a6c5a3bd51fbc58540d7129a0ae)) + ROM_LOAD_OPTIONAL( "01b_cd_mon_o.bin", 0x9b00, 0x0400, CRC(9d40b4dc) SHA1(35cffcbd983b7b37c878a15af44100568d0659d1)) + ROM_LOAD_OPTIONAL( "02b_cd_alp.bin", 0x9f00, 0x2a00, CRC(a66b7f32) SHA1(2588f9244b0ec6b861dcebe666d37d3fa88dd043)) ROM_END /* Driver */