// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** Processor Technology Corp. SOL-20 07/2009 Skeleton driver. Info from: http://www.sol20.org/ The Sol Terminal Computer was the first complete S-100 microcomputer with a built-in keyboard and video output. However, its internal architecture resembles a video display terminal more than anything else. Note that the SOLOS dump comes from the Solace emu. Confirmed as ok. The roms DPMON and CONSOL are widely available on the net as ENT files, which can be loaded into memory with the Paste option, then exported to binary files with the debugger. They are working, however the ENT files do not indicate the values of unused rom space. Therefore they are marked as BAD_DUMP. Note that the CONSOL rom is basically a dumb terminal program and doesn't do anything useful unless the MODE key (whatever that is) is pressed. CUTER is a relocatable cassette-based alternative to SOLOS. According to the manual, it should work if the sense switches are set to on. But, it continuously reads port 00 and does nothing. Need original dumps of all roms. The character roms are built by a script from the Solace source, then the characters moved back to the original 7x9 matrix positions, as shown in the manual. Although they look exactly the same, I've marked them as BAD_DUMP until properly verified. Other roms needed: - Dump of U18 in the keyboard Hardware variants (ever shipped?): - SOL-10, i.e. a stripped down version without expansion backplane and numeric keypad - SOL-PC, i.e. the single board version, basically it consisted of the SOL-20 board only Similarity to Exidy Sorcerer: - Some hardware is the same design (parallel ports, serial ports, 2 tape players, the cassette circuits) - The cassette format is totally identical, in fact tapes from one machine can be loaded on the other natively. They won't run of course. - Sorcerer monitor commands are almost identical to the SOLOS ones. example: to change tape speed to 300 baud: SE T=1 (sorcerer) SE TA 1 (SOLOS) Most other commands are identical. The EN command (enter bytes into memory) is rather primitive in SOLOS, better on Sorcerer. - Sol20 has "personality modules" where you could plug a new OS into a special socket on the motherboard. Sorcerer improved upon this by being the first computer to use cartridges. - Some circuits are completely different... the video and keyboard are notable examples, while the addresses of ram and bios on the basic machines is another major difference. ToDo: - connect up half/full duplex dipswitch function - connect up the remaining functions of port FE - keyboard (using terminal keyboard for now) - optional floppy disk support and CP/M - parallel i/o and handshake lines - connect serial i/o to something - support for loading the various file formats File Formats: - Most files are simple ascii which can be loaded via the Paste handler. These are ASC, ENT, BAS, ROM, BS5 and ECB. Most files require that the correct version of BASIC be loaded first. Paste works, but it is very very slow. Perhaps we need something faster such as what Solace has. - SVT (Solace Virtual Tape) files are a representation of a cassette, usually holding about 4 games, just like a multifile tape. This format is partially supported. - HEX files appear to be the standard Intel format, and can be loaded by Solace. - The remaining formats (OPN, PL, PRN, SMU, SOL, ASM and LIB) appear at first glance to be more specialised, and probably not worth being supported. System Setup (to play games etc). - In the Dipswitches (not the Configuration), turn cursor flashing OFF. - Loading via wav files works, so load a tape image in the file manager - In UPPER CASE, enter XE press enter, cassette will load. - At the end, the program will start by itself. - When it says use 2,4,6,8 keys, you can use the keyboard arrow keys. Monitor Commands: - TE - return to terminal mode - DU - dump memory - EN - modify memory - EX - Go (execute) - CU - Insert or remove a custom command - SE - Set parameters (eg tape speed) - SA - Save - GE - Load - XE - Load and run - CA - List the files on a tape How to use the music system: 1. Choose the "music" item from the software list 2. Type XEQ press Enter 3. When the program starts, press R, you are back in the monitor 4. Type GET press Enter 5. When this finishes loading, type EX 0 press Enter, there's no response 6. Press F, wait for numbers to appear 7. Press S, wait for numbers to appear 8. Press P, music will be heard (it isn't very loud) ****************************************************************************/ #include "emu.h" #include "cpu/i8085/i8085.h" #include "bus/rs232/rs232.h" //#include "bus/s100/s100.h" #include "imagedev/cassette.h" #include "machine/ay31015.h" #include "machine/clock.h" #include "machine/keyboard.h" #include "sound/spkrdev.h" #include "emupal.h" #include "screen.h" #include "softlist.h" #include "speaker.h" #include "formats/sol_cas.h" struct cass_data_t { struct { int length; /* time cassette level is at input.level */ int level; /* cassette level */ int bit; /* bit being read */ } input; struct { int length; /* time cassette level is at output.level */ int level; /* cassette level */ int bit; /* bit to output */ } output; }; class sol20_state : public driver_device { public: sol20_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_screen(*this, "screen") , m_cass1(*this, "cassette") , m_cass2(*this, "cassette2") , m_uart(*this, "uart") , m_uart_s(*this, "uart_s") , m_uart_clock(*this, "uart_clock") , m_uart_s_clock(*this, "uart_s_clock") , m_rs232(*this, "rs232") , m_p_videoram(*this, "videoram") , m_p_chargen(*this, "chargen") , m_iop_arrows(*this, "ARROWS") , m_iop_config(*this, "CONFIG") , m_iop_s1(*this, "S1") , m_iop_s2(*this, "S2") , m_iop_s3(*this, "S3") , m_iop_s4(*this, "S4") { } void sol20(machine_config &config); void init_sol20(); private: enum { TIMER_SOL20_CASSETTE_TC, TIMER_SOL20_BOOT }; DECLARE_READ8_MEMBER( sol20_f8_r ); DECLARE_READ8_MEMBER( sol20_fa_r ); DECLARE_READ8_MEMBER( sol20_fc_r ); DECLARE_READ8_MEMBER( sol20_fd_r ); DECLARE_WRITE8_MEMBER( sol20_f8_w ); DECLARE_WRITE8_MEMBER( sol20_fa_w ); DECLARE_WRITE8_MEMBER( sol20_fd_w ); DECLARE_WRITE8_MEMBER( sol20_fe_w ); void kbd_put(u8 data); TIMER_CALLBACK_MEMBER(sol20_cassette_tc); TIMER_CALLBACK_MEMBER(sol20_boot); uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void sol20_io(address_map &map); void sol20_mem(address_map &map); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; uint8_t m_sol20_fa; virtual void machine_reset() override; virtual void machine_start() override; uint8_t m_sol20_fc; uint8_t m_sol20_fe; uint8_t m_framecnt; cass_data_t m_cass_data; emu_timer *m_cassette_timer; cassette_image_device *cassette_device_image(); required_device m_maincpu; required_device m_screen; required_device m_cass1; required_device m_cass2; required_device m_uart; required_device m_uart_s; required_device m_uart_clock; required_device m_uart_s_clock; required_device m_rs232; required_shared_ptr m_p_videoram; required_region_ptr m_p_chargen; required_ioport m_iop_arrows; required_ioport m_iop_config; required_ioport m_iop_s1; required_ioport m_iop_s2; required_ioport m_iop_s3; required_ioport m_iop_s4; }; /* timer to read cassette waveforms */ cassette_image_device *sol20_state::cassette_device_image() { if (m_sol20_fa & 0x40) return m_cass2; else return m_cass1; } void sol20_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { switch (id) { case TIMER_SOL20_CASSETTE_TC: sol20_cassette_tc(ptr, param); break; case TIMER_SOL20_BOOT: sol20_boot(ptr, param); break; default: throw emu_fatalerror("Unknown id in sol20_state::device_timer"); } } // identical to sorcerer TIMER_CALLBACK_MEMBER(sol20_state::sol20_cassette_tc) { uint8_t cass_ws = 0; switch (m_sol20_fa & 0x20) { case 0x20: /* Cassette 300 baud */ /* loading a tape - this is basically the same as the super80. We convert the 1200/2400 Hz signal to a 0 or 1, and send it to the uart. */ m_cass_data.input.length++; cass_ws = ((cassette_device_image())->input() > +0.02) ? 1 : 0; if (cass_ws != m_cass_data.input.level) { m_cass_data.input.level = cass_ws; m_cass_data.input.bit = ((m_cass_data.input.length < 0x6) || (m_cass_data.input.length > 0x20)) ? 1 : 0; m_cass_data.input.length = 0; m_uart->write_si(m_cass_data.input.bit); } /* saving a tape - convert the serial stream from the uart, into 1200 and 2400 Hz frequencies. Synchronisation of the frequency pulses to the uart is extremely important. */ m_cass_data.output.length++; if (!(m_cass_data.output.length & 0x1f)) { cass_ws = m_uart->so_r(); if (cass_ws != m_cass_data.output.bit) { m_cass_data.output.bit = cass_ws; m_cass_data.output.length = 0; } } if (!(m_cass_data.output.length & 3)) { if (!((m_cass_data.output.bit == 0) && (m_cass_data.output.length & 4))) { m_cass_data.output.level ^= 1; // toggle output this, except on 2nd half of low bit cassette_device_image()->output(m_cass_data.output.level ? -1.0 : +1.0); } } return; case 0x00: /* Cassette 1200 baud */ /* loading a tape */ m_cass_data.input.length++; cass_ws = ((cassette_device_image())->input() > +0.02) ? 1 : 0; if (cass_ws != m_cass_data.input.level || m_cass_data.input.length == 10) { m_cass_data.input.bit = ((m_cass_data.input.length < 10) || (m_cass_data.input.length > 0x20)) ? 1 : 0; if ( cass_ws != m_cass_data.input.level ) { m_cass_data.input.length = 0; m_cass_data.input.level = cass_ws; } m_uart->write_si(m_cass_data.input.bit); } /* saving a tape - convert the serial stream from the uart, into 600 and 1200 Hz frequencies. */ m_cass_data.output.length++; if (!(m_cass_data.output.length & 7)) { cass_ws = m_uart->so_r(); if (cass_ws != m_cass_data.output.bit) { m_cass_data.output.bit = cass_ws; m_cass_data.output.length = 0; } } if (!(m_cass_data.output.length & 7)) { if (!((m_cass_data.output.bit == 0) && (m_cass_data.output.length & 8))) { m_cass_data.output.level ^= 1; // toggle output this, except on 2nd half of low bit cassette_device_image()->output(m_cass_data.output.level ? -1.0 : +1.0); } } return; } } READ8_MEMBER( sol20_state::sol20_f8_r ) { // d7 - TBMT; d6 - DAV; d5 - CTS; d4 - OE; d3 - PE; d2 - FE; d1 - DSR; d0 - CD uint8_t data = 0; m_uart_s->write_swe(0); data |= m_uart_s->tbmt_r() ? 0x80 : 0; data |= m_uart_s->dav_r( ) ? 0x40 : 0; data |= m_rs232->cts_r( ) ? 0x20 : 0; data |= m_uart_s->or_r( ) ? 0x10 : 0; data |= m_uart_s->pe_r( ) ? 0x08 : 0; data |= m_uart_s->fe_r( ) ? 0x04 : 0; data |= m_rs232->dsr_r( ) ? 0x02 : 0; data |= m_rs232->dcd_r( ) ? 0x01 : 0; m_uart_s->write_swe(1); return data; } READ8_MEMBER( sol20_state::sol20_fa_r ) { /* set unused bits high */ uint8_t data = 0x26; m_uart->write_swe(0); data |= m_uart->tbmt_r() ? 0x80 : 0; data |= m_uart->dav_r( ) ? 0x40 : 0; data |= m_uart->or_r( ) ? 0x10 : 0; data |= m_uart->fe_r( ) ? 0x08 : 0; m_uart->write_swe(1); bool arrowkey = m_iop_arrows->read() ? 0 : 1; bool keydown = m_sol20_fa & 1; return data | (arrowkey & keydown); } READ8_MEMBER( sol20_state::sol20_fc_r ) { uint8_t data = m_iop_arrows->read(); if (BIT(data, 0)) return 0x32; if (BIT(data, 1)) return 0x34; if (BIT(data, 2)) return 0x36; if (BIT(data, 3)) return 0x38; m_sol20_fa |= 1; return m_sol20_fc; } READ8_MEMBER( sol20_state::sol20_fd_r ) { // Return a byte from parallel interface return 0; } WRITE8_MEMBER( sol20_state::sol20_f8_w ) { // The only function seems to be to send RTS from bit 4 m_rs232->write_rts(BIT(data, 4)); } WRITE8_MEMBER( sol20_state::sol20_fa_w ) { m_sol20_fa &= 1; m_sol20_fa |= (data & 0xf0); /* cassette 1 motor */ m_cass1->change_state( (BIT(data,7)) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); /* cassette 2 motor */ m_cass2->change_state( (BIT(data,6)) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); if (data & 0xc0) m_cassette_timer->adjust(attotime::zero, 0, attotime::from_hz(19200)); else m_cassette_timer->adjust(attotime::zero); // bit 5 baud rate */ m_uart_clock->set_unscaled_clock(BIT(data, 5) ? 4800 : 19200); } WRITE8_MEMBER( sol20_state::sol20_fd_w ) { // Output a byte to parallel interface } WRITE8_MEMBER( sol20_state::sol20_fe_w ) { m_sol20_fe = data; } void sol20_state::sol20_mem(address_map &map) { map(0x0000, 0x07ff).bankrw("boot"); map(0x0800, 0xbfff).ram(); // optional s100 ram map(0xc000, 0xc7ff).rom(); map(0xc800, 0xcbff).ram(); // system ram map(0xcc00, 0xcfff).ram().share("videoram"); map(0xd000, 0xffff).ram(); // optional s100 ram } void sol20_state::sol20_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0xf8, 0xf8).rw(FUNC(sol20_state::sol20_f8_r), FUNC(sol20_state::sol20_f8_w)); map(0xf9, 0xf9).rw(m_uart_s, FUNC(ay51013_device::receive), FUNC(ay51013_device::transmit)); map(0xfa, 0xfa).rw(FUNC(sol20_state::sol20_fa_r), FUNC(sol20_state::sol20_fa_w)); map(0xfb, 0xfb).rw(m_uart, FUNC(ay51013_device::receive), FUNC(ay51013_device::transmit)); map(0xfc, 0xfc).r(FUNC(sol20_state::sol20_fc_r)); map(0xfd, 0xfd).rw(FUNC(sol20_state::sol20_fd_r), FUNC(sol20_state::sol20_fd_w)); map(0xfe, 0xfe).w(FUNC(sol20_state::sol20_fe_w)); map(0xff, 0xff).portr("S2"); /* map(0xf8, 0xf8) serial status in (bit 6=data av, bit 7=tmbe) map(0xf9, 0xf9) serial data in, out map(0xfa, 0xfa) general status in (bit 0=keyb data av, bit 1=parin data av, bit 2=parout ready) map(0xfb, 0xfb) tape map(0xfc, 0xfc) keyboard data in map(0xfd, 0xfd) parallel data in, out map(0xfe, 0xfe) scroll register map(0xff, 0xff) sense switches */ } /* Input ports */ static INPUT_PORTS_START( sol20 ) PORT_START("ARROWS") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DOWN) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_UP) PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_START("S1") PORT_DIPNAME( 0x04, 0x00, "Ctrl Chars") PORT_DIPSETTING( 0x04, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x08, 0x00, "Polarity") PORT_DIPSETTING( 0x00, DEF_STR( Normal )) PORT_DIPSETTING( 0x08, "Inverse") PORT_DIPNAME( 0x30, 0x10, "Cursor Type") PORT_DIPSETTING( 0x10, "Blinking") PORT_DIPSETTING( 0x20, "Solid") PORT_DIPSETTING( 0x30, DEF_STR(None)) PORT_START("S2") // Sense Switches PORT_DIPNAME( 0x01, 0x01, "FF bit 0") PORT_DIPSETTING( 0x01, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x02, 0x02, "FF bit 1") PORT_DIPSETTING( 0x02, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x04, 0x04, "FF bit 2") PORT_DIPSETTING( 0x04, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x08, 0x08, "FF bit 3") PORT_DIPSETTING( 0x08, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x10, 0x10, "FF bit 4") PORT_DIPSETTING( 0x10, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x20, 0x20, "FF bit 5") PORT_DIPSETTING( 0x20, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x40, 0x40, "FF bit 6") PORT_DIPSETTING( 0x40, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPNAME( 0x80, 0x80, "FF bit 7") PORT_DIPSETTING( 0x80, DEF_STR(Off)) PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_START("S3") PORT_DIPNAME( 0xff, 0x08, "Baud Rate") PORT_DIPSETTING( 0x01, "75") PORT_DIPSETTING( 0x02, "110") PORT_DIPSETTING( 0x04, "180") PORT_DIPSETTING( 0x08, "300") PORT_DIPSETTING( 0x10, "600") PORT_DIPSETTING( 0x20, "1200") PORT_DIPSETTING( 0x40, "2400") PORT_DIPSETTING( 0x80, "4800/9600") PORT_START("S4") PORT_DIPNAME( 0x11, 0x10, "Parity") PORT_DIPSETTING( 0x00, "Even") PORT_DIPSETTING( 0x01, "Odd") PORT_DIPSETTING( 0x10, DEF_STR(None)) PORT_DIPNAME( 0x06, 0x06, "Data Bits") PORT_DIPSETTING( 0x00, "5") PORT_DIPSETTING( 0x02, "6") PORT_DIPSETTING( 0x04, "7") PORT_DIPSETTING( 0x06, "8") PORT_DIPNAME( 0x08, 0x08, "Stop Bits") PORT_DIPSETTING( 0x00, "1") PORT_DIPSETTING( 0x08, "2") PORT_DIPNAME( 0x20, 0x00, "Duplex") PORT_DIPSETTING( 0x00, "Half") PORT_DIPSETTING( 0x20, "Full") PORT_START("CONFIG") PORT_CONFNAME( 0x01, 0x01, "High Baud Rate") // jumper on the board PORT_CONFSETTING( 0x00, "4800") PORT_CONFSETTING( 0x01, "9600") PORT_CONFNAME( 0x02, 0x00, "Character Rom") PORT_CONFSETTING( 0x00, "6574") PORT_CONFSETTING( 0x02, "6575") PORT_CONFNAME( 0x04, 0x04, "Field Rate") // modification described on page III-40 of Sol Systems Manual PORT_CONFSETTING( 0x00, "50 Hz") PORT_CONFSETTING( 0x04, "60 Hz") PORT_CONFNAME( 0x18, 0x18, "CPU Clock") PORT_CONFSETTING( 0x18, "2.04 MHz (8080A)") PORT_CONFSETTING( 0x10, "2.36 MHz (8080A-2)") PORT_CONFSETTING( 0x08, "2.86 MHz (8080A-1)") INPUT_PORTS_END /* after the first 4 bytes have been read from ROM, switch the ram back in */ TIMER_CALLBACK_MEMBER(sol20_state::sol20_boot) { membank("boot")->set_entry(0); } void sol20_state::machine_start() { m_cassette_timer = timer_alloc(TIMER_SOL20_CASSETTE_TC); } void sol20_state::machine_reset() { uint8_t data = 0, s_count = 0; int s_clock; const uint16_t s_bauds[8]={ 75, 110, 180, 300, 600, 1200, 2400, 4800 }; m_sol20_fe=0; m_sol20_fa=1; // set hard-wired uart pins m_uart->write_cs(0); m_uart->write_nb1(1); m_uart->write_nb2(1); m_uart->write_tsb(1); m_uart->write_eps(1); m_uart->write_np(1); m_uart->write_cs(1); // set switched uart pins data = m_iop_s4->read(); m_uart_s->write_cs(0); m_uart_s->write_nb1(BIT(data, 1)); m_uart_s->write_nb2(BIT(data, 2)); m_uart_s->write_tsb(BIT(data, 3)); m_uart_s->write_eps(BIT(data, 0)); m_uart_s->write_np(BIT(data, 4)); m_uart_s->write_cs(1); // set rs232 baud rate data = m_iop_s3->read(); if (data > 1) do { s_count++; data >>= 1; } while (!(data & 1) && (s_count < 7)); // find which switch is used if ( (s_count == 7) & BIT(m_iop_config->read(), 0) ) // if highest, look at jumper s_clock = 9600 << 4; else s_clock = s_bauds[s_count] << 4; // these lines could be commented out for now if you want better performance m_uart_s_clock->set_unscaled_clock(s_clock); // boot-bank membank("boot")->set_entry(1); timer_set(attotime::from_usec(9), TIMER_SOL20_BOOT); m_rs232->write_dtr(0); m_rs232->write_rts(1); int lines = BIT(m_iop_config->read(), 2) ? 260 : 312; m_screen->configure(918, lines, m_screen->visible_area(), attotime::from_ticks(918 * lines, 14.318181_MHz_XTAL).as_attoseconds()); // set CPU speed (TODO: also present on bus pin 49) double freq = (14.318181_MHz_XTAL / (4 + ((m_iop_config->read() >> 3) & 3))).dvalue(); m_maincpu->set_unscaled_clock(freq); } void sol20_state::init_sol20() { uint8_t *RAM = memregion("maincpu")->base(); membank("boot")->configure_entries(0, 2, &RAM[0x0000], 0xc000); } uint32_t sol20_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { // Visible screen is 64 x 16, with start position controlled by scroll register. // Each character is 9 pixels wide (blank ones at the right) and 13 lines deep. // Note on blinking characters: // any character with bit 7 set will blink. With DPMON, do DA C000 C2FF to see what happens uint16_t which = (m_iop_config->read() & 2) << 10; uint8_t s1 = m_iop_s1->read(); uint8_t y,ra,chr,gfx; uint16_t sy=0,ma,x,inv; uint8_t polarity = (s1 & 8) ? 0xff : 0; bool cursor_inv = false; if (((s1 & 0x30) == 0x20) || (((s1 & 0x30) == 0x10) && (m_framecnt & 0x08))) cursor_inv = true; m_framecnt++; ma = m_sol20_fe << 6; // scroll register for (y = 0; y < 16; y++) { for (ra = 0; ra < 13; ra++) { uint16_t *p = &bitmap.pix16(sy++); for (x = ma; x < ma + 64; x++) { inv = polarity; chr = m_p_videoram[x & 0x3ff]; // cursor if (BIT(chr, 7) && cursor_inv) inv ^= 0xff; chr &= 0x7f; if ((ra == 0) || ((s1 & 4) && (chr < 0x20))) gfx = inv; else if ((chr==0x2C) || (chr==0x3B) || (chr==0x67) || (chr==0x6A) || (chr==0x70) || (chr==0x71) || (chr==0x79)) { if (ra < 4) gfx = inv; else gfx = m_p_chargen[which | (chr<<4) | (ra-4) ] ^ inv; } else { if (ra < 10) gfx = m_p_chargen[which | (chr<<4) | (ra-1) ] ^ inv; else gfx = inv; } /* 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); *p++ = BIT(inv, 0); } } ma+=64; } return 0; } /* F4 Character Displayer */ static const gfx_layout sol20_charlayout = { 7, 9, /* 7 x 9 characters */ 128*2, /* 128 characters per rom */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6 }, /* y offsets */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8 }, 8*16 /* every char takes 16 bytes */ }; static GFXDECODE_START( gfx_sol20 ) GFXDECODE_ENTRY( "chargen", 0x0000, sol20_charlayout, 0, 1 ) GFXDECODE_END void sol20_state::kbd_put(u8 data) { if (data) { m_sol20_fa &= 0xfe; m_sol20_fc = data; } } void sol20_state::sol20(machine_config &config) { /* basic machine hardware */ I8080A(config, m_maincpu, 14.318181_MHz_XTAL / 7); // divider selectable as 5, 6 or 7 through jumpers m_maincpu->set_addrmap(AS_PROGRAM, &sol20_state::sol20_mem); m_maincpu->set_addrmap(AS_IO, &sol20_state::sol20_io); m_maincpu->out_inte_func().set("speaker", FUNC(speaker_sound_device::level_w)); /* video hardware */ SCREEN(config, m_screen, SCREEN_TYPE_RASTER); m_screen->set_raw(14.318181_MHz_XTAL, 918, 0, 576, 260, 0, 208); m_screen->set_screen_update(FUNC(sol20_state::screen_update)); m_screen->set_palette("palette"); GFXDECODE(config, "gfxdecode", "palette", gfx_sol20); PALETTE(config, "palette", palette_device::MONOCHROME); /* sound hardware */ SPEAKER(config, "mono").front_center(); SPEAKER_SOUND(config, "speaker").add_route(ALL_OUTPUTS, "mono", 2.00); // music board // devices CASSETTE(config, m_cass1).set_formats(sol20_cassette_formats); m_cass1->set_default_state(CASSETTE_PLAY | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED); m_cass1->add_route(ALL_OUTPUTS, "mono", 0.05); // cass1 speaker m_cass1->set_interface("sol20_cass"); CASSETTE(config, m_cass2).set_formats(sol20_cassette_formats); m_cass2->set_default_state(CASSETTE_PLAY | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED); m_cass2->add_route(ALL_OUTPUTS, "mono", 0.05); // cass2 speaker m_cass2->set_interface("sol20_cass"); AY51013(config, m_uart); // TMS6011NC m_uart->set_auto_rdav(true); // ROD (pin 4) tied to RDD (pin 18) CLOCK(config, m_uart_clock, 4800); m_uart_clock->signal_handler().set(m_uart, FUNC(ay51013_device::write_rcp)); m_uart_clock->signal_handler().append(m_uart, FUNC(ay51013_device::write_tcp)); RS232_PORT(config, m_rs232, default_rs232_devices, nullptr); AY51013(config, m_uart_s); // TMS6011NC m_uart_s->read_si_callback().set(m_rs232, FUNC(rs232_port_device::rxd_r)); m_uart_s->write_so_callback().set(m_rs232, FUNC(rs232_port_device::write_txd)); m_uart_s->set_auto_rdav(true); // ROD (pin 4) tied to RDD (pin 18) CLOCK(config, m_uart_s_clock, 4800); m_uart_s_clock->signal_handler().set(m_uart_s, FUNC(ay51013_device::write_rcp)); m_uart_s_clock->signal_handler().append(m_uart_s, FUNC(ay51013_device::write_tcp)); generic_keyboard_device &keyboard(GENERIC_KEYBOARD(config, "keyboard", 0)); keyboard.set_keyboard_callback(FUNC(sol20_state::kbd_put)); SOFTWARE_LIST(config, "cass_list").set_original("sol20_cass"); } /* ROM definition */ ROM_START( sol20 ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_SYSTEM_BIOS(0, "solos", "SOLOS") ROMX_LOAD( "solos.bin", 0xc000, 0x0800, CRC(4d0af383) SHA1(ac4510c3380ed4a31ccf4f538af3cb66b76701ef), ROM_BIOS(0) ) // from solace emu ROM_SYSTEM_BIOS(1, "dpmon", "DPMON") ROMX_LOAD( "dpmon.bin", 0xc000, 0x0800, BAD_DUMP CRC(2a84f099) SHA1(60ff6e38082c50afcf0f40707ef65668a411008b), ROM_BIOS(1) ) ROM_SYSTEM_BIOS(2, "consol", "CONSOL") ROMX_LOAD( "consol.bin", 0xc000, 0x0400, BAD_DUMP CRC(80bf6d85) SHA1(84b81c60bb08a3a5435ec1be56a67aa695bce099), ROM_BIOS(2) ) ROM_SYSTEM_BIOS(3, "solos2", "Solos Patched") ROMX_LOAD( "solos2.bin", 0xc000, 0x0800, CRC(7776cc7d) SHA1(c4739a9ea7e8146ce7ae3305ed526b6045efa9d6), ROM_BIOS(3) ) // from Nama ROM_SYSTEM_BIOS(4, "bootload", "BOOTLOAD") ROMX_LOAD( "bootload.bin", 0xc000, 0x0800, BAD_DUMP CRC(4261ac71) SHA1(4752408ac85d88857e8e9171c7f42bd623c9271e), ROM_BIOS(4) ) // from Nama // This one doesn't work ROM_SYSTEM_BIOS(5, "cuter", "CUTER") ROMX_LOAD( "cuter.bin", 0xc000, 0x0800, BAD_DUMP CRC(39cca901) SHA1(33725d6da63e295552ee13f0a735d33aee8f0d17), ROM_BIOS(5) ) // from Nama ROM_REGION( 0x1000, "chargen", 0 ) ROM_LOAD( "6574.bin", 0x0000, 0x0800, BAD_DUMP CRC(fd75df4f) SHA1(4d09aae2f933478532b7d3d1a2dee7123d9828ca) ) ROM_LOAD( "6575.bin", 0x0800, 0x0800, BAD_DUMP CRC(cfdb76c2) SHA1(ab00798161d13f07bee3cf0e0070a2f0a805591f) ) ROM_REGION( 0x100, "keyboard", 0 ) ROM_LOAD( "8574.u18", 0x000, 0x100, NO_DUMP ) // 256x4 bipolar PROM or mask ROM; second half unused ROM_END /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1976, sol20, 0, 0, sol20, sol20, sol20_state, init_sol20, "Processor Technology Corporation", "Sol-20 Terminal Computer", 0 )