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Diffstat (limited to 'src/mame/skeleton/ptcsol.cpp')
-rw-r--r-- | src/mame/skeleton/ptcsol.cpp | 817 |
1 files changed, 817 insertions, 0 deletions
diff --git a/src/mame/skeleton/ptcsol.cpp b/src/mame/skeleton/ptcsol.cpp new file mode 100644 index 00000000000..bebd6fb9913 --- /dev/null +++ b/src/mame/skeleton/ptcsol.cpp @@ -0,0 +1,817 @@ +// 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_dev.h" +#include "speaker.h" + +#include "formats/sol_cas.h" + + +namespace { + +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_rom(*this, "maincpu") + , m_ram(*this, "mainram") + , 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_vram(*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); + +private: + virtual void machine_start() override ATTR_COLD; + virtual void machine_reset() override ATTR_COLD; + + void mem_map(address_map &map) ATTR_COLD; + void io_map(address_map &map) ATTR_COLD; + + struct cass_data_t + { + struct + { + int length = 0; /* time cassette level is at input.level */ + int level = 0; /* cassette level */ + int bit = 0; /* bit being read */ + } input; + struct + { + int length = 0; /* time cassette level is at output.level */ + int level = 0; /* cassette level */ + int bit = 0; /* bit to output */ + } output; + }; + + u8 sol20_f8_r(); + u8 sol20_fa_r(); + u8 sol20_fc_r(); + u8 sol20_fd_r(); + void sol20_f8_w(u8 data); + void sol20_fa_w(u8 data); + void sol20_fd_w(u8 data); + void sol20_fe_w(u8 data); + void kbd_put(u8 data); + TIMER_CALLBACK_MEMBER(sol20_cassette_tc); + u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + + u8 m_sol20_fa = 0U; + u8 m_sol20_fc = 0U; + u8 m_sol20_fe = 0U; + u8 m_framecnt = 0U; + cass_data_t m_cass_data; + emu_timer *m_cassette_timer = nullptr; + cassette_image_device *cassette_device_image(); + memory_passthrough_handler m_rom_shadow_tap; + required_device<i8080a_cpu_device> m_maincpu; + required_region_ptr<u8> m_rom; + required_shared_ptr<u8> m_ram; + required_device<screen_device> m_screen; + required_device<cassette_image_device> m_cass1; + required_device<cassette_image_device> m_cass2; + required_device<ay31015_device> m_uart; + required_device<ay31015_device> m_uart_s; + required_device<clock_device> m_uart_clock; + required_device<clock_device> m_uart_s_clock; + required_device<rs232_port_device> m_rs232; + required_shared_ptr<u8> m_vram; + required_region_ptr<u8> 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; +} + + +// identical to sorcerer +TIMER_CALLBACK_MEMBER(sol20_state::sol20_cassette_tc) +{ + u8 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; + } +} + +u8 sol20_state::sol20_f8_r() +{ + // d7 - TBMT; d6 - DAV; d5 - CTS; d4 - OE; d3 - PE; d2 - FE; d1 - DSR; d0 - CD + u8 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; +} + +u8 sol20_state::sol20_fa_r() +{ + /* set unused bits high */ + u8 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); +} + +u8 sol20_state::sol20_fc_r() +{ + u8 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; +} + +u8 sol20_state::sol20_fd_r() +{ +// Return a byte from parallel interface + return 0; +} + +void sol20_state::sol20_f8_w(u8 data) +{ +// The only function seems to be to send RTS from bit 4 + m_rs232->write_rts(BIT(data, 4)); +} + +void sol20_state::sol20_fa_w(u8 data) +{ + 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); +} + +void sol20_state::sol20_fd_w(u8 data) +{ +// Output a byte to parallel interface +} + +void sol20_state::sol20_fe_w(u8 data) +{ + m_sol20_fe = data; +} + +void sol20_state::mem_map(address_map &map) +{ + map(0x0000, 0xbfff).ram().share("mainram"); // optional s100 ram + map(0xc000, 0xc7ff).rom().region("maincpu", 0); + map(0xc800, 0xcbff).ram(); // system ram + map(0xcc00, 0xcfff).ram().share("videoram"); + map(0xd000, 0xffff).ram(); // optional s100 ram +} + +void sol20_state::io_map(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_KEYPAD ) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(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 + + +void sol20_state::machine_start() +{ + m_cassette_timer = timer_alloc(FUNC(sol20_state::sol20_cassette_tc), this); + save_item(NAME(m_sol20_fa)); + save_item(NAME(m_sol20_fc)); + save_item(NAME(m_sol20_fe)); + save_item(NAME(m_framecnt)); // unimportant +} + +void sol20_state::machine_reset() +{ + u8 data = 0, s_count = 0; + int s_clock; + const u16 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; + + m_uart_s_clock->set_unscaled_clock(s_clock); + + 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); + + // Boot tap + address_space &program = m_maincpu->space(AS_PROGRAM); + program.install_rom(0x0000, 0x07ff, m_rom); // do it here for F3 + m_rom_shadow_tap.remove(); + m_rom_shadow_tap = program.install_read_tap( + 0xc000, 0xc7ff, + "rom_shadow_r", + [this] (offs_t offset, u8 &data, u8 mem_mask) + { + if (!machine().side_effects_disabled()) + { + // delete this tap + m_rom_shadow_tap.remove(); + + // reinstall RAM over the ROM shadow + m_maincpu->space(AS_PROGRAM).install_ram(0x0000, 0x07ff, m_ram); + } + }, + &m_rom_shadow_tap); +} + + +u32 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 + u16 which = (m_iop_config->read() & 2) << 10; + u8 s1 = m_iop_s1->read(); + u16 sy=0; + u8 polarity = (s1 & 8) ? 0xff : 0; + + bool cursor_inv = false; + if (((s1 & 0x30) == 0x20) || (((s1 & 0x30) == 0x10) && (m_framecnt & 0x08))) + cursor_inv = true; + + m_framecnt++; + + u16 ma = m_sol20_fe << 6; // scroll register + + for (u8 y = 0; y < 16; y++) + { + for (u8 ra = 0; ra < 13; ra++) + { + u16 *p = &bitmap.pix(sy++); + + for (u16 x = ma; x < ma + 64; x++) + { + u16 inv = polarity; + u8 chr = m_vram[x & 0x3ff]; + + // cursor + if (BIT(chr, 7) && cursor_inv) + inv ^= 0xff; + + chr &= 0x7f; + + u8 gfx; + 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::mem_map); + m_maincpu->set_addrmap(AS_IO, &sol20_state::io_map); + 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( 0x0800, "maincpu", 0 ) + ROM_SYSTEM_BIOS(0, "solos", "SOLOS") + ROMX_LOAD( "solos.bin", 0x0000, 0x0800, CRC(4d0af383) SHA1(ac4510c3380ed4a31ccf4f538af3cb66b76701ef), ROM_BIOS(0) ) // from solace emu + ROM_SYSTEM_BIOS(1, "dpmon", "DPMON") + ROMX_LOAD( "dpmon.bin", 0x0000, 0x0800, BAD_DUMP CRC(2a84f099) SHA1(60ff6e38082c50afcf0f40707ef65668a411008b), ROM_BIOS(1) ) + ROM_SYSTEM_BIOS(2, "consol", "CONSOL") + ROMX_LOAD( "consol.bin", 0x0000, 0x0400, BAD_DUMP CRC(80bf6d85) SHA1(84b81c60bb08a3a5435ec1be56a67aa695bce099), ROM_BIOS(2) ) + ROM_SYSTEM_BIOS(3, "solos2", "Solos Patched") + ROMX_LOAD( "solos2.bin", 0x0000, 0x0800, CRC(7776cc7d) SHA1(c4739a9ea7e8146ce7ae3305ed526b6045efa9d6), ROM_BIOS(3) ) // from Nama + ROM_SYSTEM_BIOS(4, "bootload", "BOOTLOAD") + ROMX_LOAD( "bootload.bin", 0x0000, 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", 0x0000, 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 + +} // anonymous namespace + +/* Driver */ +// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS +COMP( 1976, sol20, 0, 0, sol20, sol20, sol20_state, empty_init, "Processor Technology Corporation", "Sol-20 Terminal Computer", MACHINE_SUPPORTS_SAVE ) |