diff options
Diffstat (limited to 'src/mess/drivers/cd2650.c')
-rw-r--r-- | src/mess/drivers/cd2650.c | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/src/mess/drivers/cd2650.c b/src/mess/drivers/cd2650.c deleted file mode 100644 index 2e2b8e0d895..00000000000 --- a/src/mess/drivers/cd2650.c +++ /dev/null @@ -1,323 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Robbbert -/*************************************************************************** - -Central Data cd2650 - -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. - -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 manuals or schematics exist. -- Cassette doesn't work. - -****************************************************************************/ - -#include "emu.h" -#include "cpu/s2650/s2650.h" -#include "machine/keyboard.h" -#include "imagedev/snapquik.h" -#include "imagedev/cassette.h" -#include "sound/wave.h" -#include "sound/beep.h" - -#define KEYBOARD_TAG "keyboard" - -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_p_videoram(*this, "videoram"), - m_maincpu(*this, "maincpu"), - m_beep(*this, "beeper"), - m_cass(*this, "cassette") - { - } - - DECLARE_READ8_MEMBER(keyin_r); - DECLARE_WRITE8_MEMBER(beep_w); - DECLARE_WRITE8_MEMBER(kbd_put); - DECLARE_READ8_MEMBER(cass_r); - DECLARE_WRITE_LINE_MEMBER(cass_w); - 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<UINT8> m_p_videoram; - -private: - UINT8 m_term_data; - virtual void machine_reset(); - virtual void video_start(); - required_device<cpu_device> m_maincpu; - required_device<beep_device> m_beep; - required_device<cassette_image_device> m_cass; -}; - - -WRITE8_MEMBER( cd2650_state::beep_w ) -{ - if (data & 7) - m_beep->set_state(BIT(data, 3)); -} - -WRITE_LINE_MEMBER( cd2650_state::cass_w ) -{ - m_cass->output(state ? -1.0 : +1.0); -} - -READ8_MEMBER( cd2650_state::cass_r ) -{ - return (m_cass->input() > 0.03) ? 1 : 0; -} - -READ8_MEMBER( cd2650_state::keyin_r ) -{ - UINT8 ret = m_term_data; - m_term_data = ret | 0x80; - return ret; -} - -static ADDRESS_MAP_START(cd2650_mem, AS_PROGRAM, 8, cd2650_state) - ADDRESS_MAP_UNMAP_HIGH - AM_RANGE( 0x0000, 0x03ff) AM_ROM AM_REGION("roms", 0) - AM_RANGE( 0x1000, 0x7fff) AM_RAM AM_SHARE("videoram") -ADDRESS_MAP_END - -static ADDRESS_MAP_START( cd2650_io, AS_IO, 8, cd2650_state) - ADDRESS_MAP_UNMAP_HIGH - //AM_RANGE(0x80, 0x84) disk i/o - AM_RANGE(S2650_DATA_PORT,S2650_DATA_PORT) AM_READWRITE(keyin_r, beep_w) - AM_RANGE(S2650_SENSE_PORT, S2650_SENSE_PORT) AM_READ(cass_r) -ADDRESS_MAP_END - -/* Input ports */ -static INPUT_PORTS_START( cd2650 ) -INPUT_PORTS_END - - -void cd2650_state::machine_reset() -{ - m_term_data = 0x80; - m_beep->set_frequency(950); /* guess */ - m_beep->set_state(0); -} - -void cd2650_state::video_start() -{ - m_p_chargen = memregion("chargen")->base(); -} - -UINT32 cd2650_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ -/* The video is unusual in that the characters in each line are spaced at 16 bytes in memory, - thus line 1 starts at 1000, line 2 at 1001, etc. There are 16 lines of 80 characters. - Further, the letters have bit 6 set low, thus the range is 01 to 1A. - When the bottom of the screen is reached, it does not scroll, it just wraps around. */ - - UINT16 offset = 0; - UINT8 y,ra,chr,gfx; - UINT16 sy=0,x,mem; - - for (y = 0; y < 16; y++) - { - for (ra = 0; ra < 10; ra++) - { - UINT16 *p = &bitmap.pix16(sy++); - - for (x = 0; x < 80; x++) - { - gfx = 0; - if ((ra) && (ra < 9)) - { - mem = offset + y + (x<<4); - - if (mem > 0x4ff) - mem -= 0x500; - - chr = m_p_videoram[mem] & 0x3f; - - gfx = m_p_chargen[(BITSWAP8(chr,7,6,2,1,0,3,4,5)<<3) | (ra-1) ]; - } - - /* Display a scanline of a character */ - *p++ = BIT(gfx, 7); - *p++ = BIT(gfx, 6); - *p++ = BIT(gfx, 5); - *p++ = BIT(gfx, 4); - *p++ = BIT(gfx, 3); - *p++ = BIT(gfx, 2); - *p++ = BIT(gfx, 1); - *p++ = BIT(gfx, 0); - } - } - } - return 0; -} - -/* F4 Character Displayer */ -static const gfx_layout cd2650_charlayout = -{ - 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 8 bytes */ -}; - -static GFXDECODE_START( cd2650 ) - GFXDECODE_ENTRY( "chargen", 0x0000, cd2650_charlayout, 0, 1 ) -GFXDECODE_END - -WRITE8_MEMBER( cd2650_state::kbd_put ) -{ - if (data) - m_term_data = data; -} - -QUICKLOAD_LOAD_MEMBER( cd2650_state, cd2650 ) -{ - int i, result = IMAGE_INIT_FAIL; - - 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) - { - image.seterror(IMAGE_ERROR_INVALIDIMAGE, "File too long"); - image.message(" File too long"); - } - else - { - dynamic_buffer quick_data(quick_length); - int read_ = image.fread( &quick_data[0], 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) - { - image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Invalid header"); - image.message(" Invalid header"); - } - else - { - int exec_addr = quick_data[1] * 256 + quick_data[2]; - - if (exec_addr >= quick_length) - { - image.seterror(IMAGE_ERROR_INVALIDIMAGE, "Exec address beyond end of file"); - image.message(" Exec address beyond end of file"); - } - else - { - // do not overwite system area (17E0-17FF) otherwise chess3 has problems - read_ = 0x17e0; - if (quick_length < 0x17e0) - read_ = quick_length; - - 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++) - 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); - - // Start the quickload - m_maincpu->set_state_int(S2650_PC, exec_addr); - - result = IMAGE_INIT_PASS; - } - } - } - - return result; -} - -static MACHINE_CONFIG_START( cd2650, cd2650_state ) - /* basic machine hardware */ - MCFG_CPU_ADD("maincpu",S2650, XTAL_1MHz) - MCFG_CPU_PROGRAM_MAP(cd2650_mem) - MCFG_CPU_IO_MAP(cd2650_io) - MCFG_S2650_FLAG_HANDLER(WRITELINE(cd2650_state, cass_w)) - - /* video hardware */ - MCFG_SCREEN_ADD("screen", RASTER) - MCFG_SCREEN_REFRESH_RATE(50) - MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ - MCFG_SCREEN_UPDATE_DRIVER(cd2650_state, screen_update) - MCFG_SCREEN_SIZE(640, 160) - MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 159) - MCFG_SCREEN_PALETTE("palette") - MCFG_GFXDECODE_ADD("gfxdecode", "palette", cd2650) - MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") - - /* quickload */ - MCFG_QUICKLOAD_ADD("quickload", cd2650_state, cd2650, "pgm", 1) - - /* 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_DEVICE_ADD(KEYBOARD_TAG, GENERIC_KEYBOARD, 0) - MCFG_GENERIC_KEYBOARD_CB(WRITE8(cd2650_state, kbd_put)) - MCFG_CASSETTE_ADD( "cassette" ) -MACHINE_CONFIG_END - -/* ROM definition */ -ROM_START( cd2650 ) - ROM_REGION( 0x0400, "roms", 0 ) - ROM_LOAD( "cd2650.rom", 0x0000, 0x0400, CRC(5397328e) SHA1(7106fdb60e1ad2bc5e8e45527f348c23296e8d6a)) - - 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( 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 */ - -/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ -COMP( 1977, cd2650, 0, 0, cd2650, cd2650, driver_device, 0, "Central Data", "CD 2650", 0 ) |