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Diffstat (limited to 'src/mame/drivers/candela.cpp')
-rw-r--r-- | src/mame/drivers/candela.cpp | 820 |
1 files changed, 0 insertions, 820 deletions
diff --git a/src/mame/drivers/candela.cpp b/src/mame/drivers/candela.cpp deleted file mode 100644 index 0b38881a307..00000000000 --- a/src/mame/drivers/candela.cpp +++ /dev/null @@ -1,820 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Joakim Larsson Edstrom -/* - * - * History of Candela Data AB - *--------------------------- - * The Candela computer was designed to be the big breakthough and developed by Candela Data AB, "a Didact Company". - * The Candela system was based around a main unit that could run OS-9 or Flex and a terminal unit that had a - * proprietary software including CDBASIC. The Candela system lost the battle of the Swedish schools to - * the Compis computer by TeleNova which was based on CP/M initially. Later both lost to IBM PC as we know. - * Candela Data continued to sell their system to the swedish industry without major successes despite great - * innovation and spririt. - * - * Misc links about the boards supported by this driver. - *----------------------------------------------------- - * http://frakaday.blogspot.com/p/candela.html - * http://elektronikforumet.com/forum/viewtopic.php?f=11&t=51424 - * - * TODO: - * Candela designs: can09t, can09 - * ------------------------------------- - * - Add PCB layouts OK - * - Dump ROM:s, OK OK - * - Keyboard - * - Display/CRT - * - Clickable Artwork - * - Sound - * - Cassette i/f - * - Expansion bus - * - Expansion overlay - * - Interrupts - * - Serial OK - ****************************************************************************/ - -#include "emu.h" -#include "cpu/m6809/m6809.h" -#include "machine/6821pia.h" -#include "machine/6840ptm.h" -#include "machine/6850acia.h" -#include "machine/clock.h" -#include "machine/ram.h" -#include "machine/wd_fdc.h" -#include "video/mc6845.h" - -// Features -#include "imagedev/cassette.h" -#include "bus/rs232/rs232.h" -#include "emupal.h" -#include "screen.h" -#include "speaker.h" - -//************************************************************************** -// MACROS / CONSTANTS -//************************************************************************** - -//#define LOG_GENERAL (1U << 0) -#define LOG_SETUP (1U << 1) -#define LOG_SCAN (1U << 2) -#define LOG_BANK (1U << 3) -#define LOG_SCREEN (1U << 4) -#define LOG_READ (1U << 5) -#define LOG_CS (1U << 6) -#define LOG_PLA (1U << 7) -#define LOG_PROM (1U << 8) - -//#define VERBOSE (LOG_READ | LOG_GENERAL | LOG_SETUP | LOG_PLA | LOG_BANK) -//#define LOG_OUTPUT_FUNC printf -#include "logmacro.h" - -#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__) -#define LOGSCAN(...) LOGMASKED(LOG_SCAN, __VA_ARGS__) -#define LOGBANK(...) LOGMASKED(LOG_BANK, __VA_ARGS__) -#define LOGSCREEN(...) LOGMASKED(LOG_SCREEN, __VA_ARGS__) -#define LOGR(...) LOGMASKED(LOG_READ, __VA_ARGS__) -#define LOGCS(...) LOGMASKED(LOG_CS, __VA_ARGS__) -#define LOGPLA(...) LOGMASKED(LOG_PLA, __VA_ARGS__) -#define LOGPROM(...) LOGMASKED(LOG_PROM, __VA_ARGS__) - -#ifdef _MSC_VER -#define FUNCNAME __func__ -#else -#define FUNCNAME __PRETTY_FUNCTION__ -#endif - -#define PIA1_TAG "pia1" -#define PIA2_TAG "pia2" -#define PIA3_TAG "pia3" -#define PIA4_TAG "pia4" - -/* - * The CAN09 v1.4 CPU board The CAN09 ROM and AD/DA board - * +-------------------------------------------------------------+ ___ +----------------------------------------------------------+ - * +-+ +---+ +------+ +-----++-----+ +-----++-----+ |_| | +-+ +-----++-----++-----++-----++-----++-----+ | - * | | |RST| | | | ROM || |+---+| RAM || | +--+ | | | | |J2 |PROM7||PROM6||PROM5||PROM4||PROM3||PROM2| +---+ | - * | | +---+ | | |27256||62256||74 ||58256||62256| |CN| | | | | | |empty||empty||empty||empty||empty||empty| |74 | | - * | | O | 6809 | | MON ||empty||245|| ||empty| |J7| | | | | | o| || || || || || | |393| | - * | | J2O | | | 58B || || || || | | | | | | | | o| || || || || || | | | | - * | | O | | | || || || || | | | | | | | | o+-----++-----++-----++-----++-----++-----+ +---+ | - * | | O | | +-----++-----++---++-----++-----+ +--+ | |EUR| | | o ______ +---+ | - * | |J1 O | | +-------+ +-----+ +-----+ | | | | | oJ1 | 74138| |74 | | - * +-+ O | | | 74138 | | | | | | |CN | +-+ o +------+ |393| | - * +-+ O +-+------+ +-------+ +-----+| | | | | |J4 | J4|8 o +-----------------+ +-----------------+ | | | - * | |J6 O |74165 | +--++-----+| || PIA | | PIA | | | | |8 o | PIA 6821 | | PIA 6821 | +---+ | - * | | O +------+ +---+|CN|| || PTM || 6821| | 6821| | | | +-+ o | | | | | - * | | O VR1 VR2 |82S||J8|| || 6840|| | | | | | | | | o +-----------------+ +-----------------+ | - * | | O +------+ |123|| ||ACIA || || | | | | | | | | o +-------++-------+ +--------+ +--------+ | - * +-+ O |7405 | | || || 6850|| || | | | | | | | | o |MPD1603|| 14051 | | TL501 | | 74LS02 | | - * _=== +------+ ++--++--+| || || | | | | | | | | +-------++-------+ +--------+ +--------+ | - * comp _|= |74132 | | 7400 |+----+++-----++-----+ +-----+ |_| | | |J3 +-------+ +---------+ +----------+ | - * video === +------+ +------+ |MAX232 | | |___| +-+ |MC34004| |AD7528 | |ADC0820 | | - * +----------------------------------+-------+------------------+ +----------+-------+-------+---------+--+----------+-------+ - * - */ -/* - * Candela CAN09 SBC - * TODO: - * - Map additional PIA:s on the ROM board - * - Vram and screen - * - Keyboard - * - LCD - * - AD/DA support for related BASIC functions - * - Promett rom cartridge support - */ - -#define SYSPIA_TAG PIA1_TAG -#define USRPIA_TAG PIA2_TAG - -// Start offset for each device segment in bank array -#define RAM0 0x00 -#define RAM1 0x08 -#define PROM 0x10 -#define RAM2 0x18 -#define IO 0x1a - -/* Candela CAN09 driver class */ - class can09t_state : public driver_device -{ -public: - can09t_state(const machine_config &mconfig, device_type type, const char * tag) - : driver_device(mconfig, type, tag) - , m_maincpu(*this, "maincpu") - , m_syspia(*this, SYSPIA_TAG) - , m_usrpia(*this, USRPIA_TAG) - , m_pia3(*this, PIA3_TAG) - , m_pia4(*this, PIA4_TAG) - , m_ptm(*this, "ptm") - , m_acia(*this, "acia") - , m_cass(*this, "cassette") - , m_banksel(1) - { } - required_device<cpu_device> m_maincpu; - virtual void machine_start() override; - DECLARE_READ8_MEMBER (read); - DECLARE_WRITE8_MEMBER (write); - DECLARE_READ8_MEMBER( syspia_A_r ); - DECLARE_READ8_MEMBER( syspia_B_r ); - DECLARE_WRITE8_MEMBER( syspia_B_w ); - DECLARE_WRITE_LINE_MEMBER( syspia_cb2_w); - DECLARE_WRITE_LINE_MEMBER( usrpia_cb2_w); - DECLARE_WRITE_LINE_MEMBER (write_acia_clock); - void can09t(machine_config &config); - void can09t_map(address_map &map); -protected: - required_device<pia6821_device> m_syspia; - required_device<pia6821_device> m_usrpia; - required_device<pia6821_device> m_pia3; - required_device<pia6821_device> m_pia4; - required_device<ptm6840_device> m_ptm; - required_device<acia6850_device> m_acia; - required_device<cassette_image_device> m_cass; - - uint8_t m_banksel; - uint8_t *m_plap; - uint8_t *m_epromp; - - uint8_t m_ram0[1024 * 8]; // IC3 - uint8_t m_ram1[1024 * 32]; // IC4 - uint8_t m_ram2[1024 * 8]; // IC5 -private: - enum { - PLA_EPROM = 0x80, - PLA_IO1 = 0x40, - PLA_RAM2 = 0x20, - PLA_RAM1 = 0x10, - PLA_RAM0 = 0x08, - PLA_RAM13 = 0x04, - PLA_RAM14 = 0x02, - PLA_MPX = 0x01 - }; - - enum { - CPU_A4 = 0x010, - CPU_A5 = 0x020, - CPU_A6 = 0x040, - CPU_A7 = 0x080, - CPU_A8 = 0x100, - CPU_A9 = 0x200, - }; - - enum { // 74138 outputs, naming after schematics - X0XX = 0x0000, - X1XX = 0x0010, - X2XX = 0x0020, - X3XX = 0x0030, - X4XX = 0x0080, - X5XX = 0x0090, - X6XX = 0x00a0, - X7XX = 0x00b0, - }; -}; - -void can09t_state::machine_start() -{ - LOG("%s()\n", FUNCNAME); - - /* TBP18S030 32 bytes fuse PROM controls the entire memory map in two parts/map-banks - BANK 0: 6f 6f 69 69 7b 7b ee ee e8 e8 ec bc ea ea 7f 7f - BANK 1: f1 f1 f5 f5 f3 f3 f7 f7 dc dc ec bc ea ea 7f 7f - - Connected as follows: - A12 -- A0 Y0 -- MPX* - latch for screen RAM - A13 -- A1 Y1 -- RAM14 - A14 -- A2 Y2 -- RAM13 - A15 -- A3 Y3 -- RAM0 - SYSPIA PB5 -- BANK -- A4 Y4 -- RAM1 - E+Q -- S* Y5 -- RAM2 - Y6 -- IO1 - Y7 -- EPROM - - The PAL outputs are used as follows: - -------------------------------- - Y0 IC12 MUX 74245: D0-D7 + MPX + RW => BD0-BD7 - Y1 RAM14 is used together with the other outputs - Y2 RAM13 is used together with the other outputs - Y3 IC3 SRAM 6264: A0-A12 + RAM13:CS2 + RAM14:NC + RAM0:OE:CE + jumper B2 RW/pulled high:RW + VCC:BATTERY - Y4 IC4 SRAM 62256: A0-A12 + RAM13 + RAM14 + RW + RAM1:OE:CE + BD0-BD7 - Y5 IC5 SRAM 6264: A0-A12 + RAM13:CS2 + RAM14:NC + RW + RAM2:OE:CE + BD0-BD7 - Y6 IC11 DMX 74138: A4:A A5:B A7:C A8:G1 IO1:G2A A9:G2B => x0xx-x7xx see bellow: - Y7 IC2 PROM 27256: A0-A14 + EPROM - - The 74138 demuxer outputs are used as follows: - A B C (A4 A5 and A7 respectivelly, not A6!) - ---------------------------------------------- - 0 0 0 Y0 x0xx ACIA 0xB100-B101 - 0 0 1 Y1 x1xx SYSPIA 0xB110-B113 - 0 1 0 Y2 x2xx USRPIA 0xB120-B123 - 0 1 1 Y3 x3xx PTM 0xB130-B137 - 1 0 0 Y4 x4xx 0xB180-B18F - 1 0 1 Y5 x5xx J1, J2 0xB190-B19F - 1 1 0 Y6 x6xx - 1 1 1 Y7 x7xx J1, J2 0xB1B0-B1BF - */ - m_plap = (uint8_t*)(memregion ("plas")->base ()); - m_epromp = (uint8_t*)(memregion ("roms")->base ()); - memset(m_ram0, 0, sizeof(m_ram0)); - memset(m_ram1, 0, sizeof(m_ram1)); - memset(m_ram2, 0, sizeof(m_ram2)); -}; - -READ8_MEMBER( can09t_state::read ) -{ - LOG("%s %02x\n", FUNCNAME, offset); - uint8_t pla_offset = 0; - uint8_t pla_data = 0; - uint8_t byte = 0; - - // Form the offset into the PLA (see above for explanation on PLA hookup) - pla_offset = ((offset >> 12) & 0x0f) | (m_banksel ? 0x10 : 0x00); - - // Get the PLA data byte - pla_data = m_plap[pla_offset & 0x1f]; - LOGPLA("PLA[%02x] read: %02x Bank%d\n", pla_offset, pla_data, m_banksel != 0 ? 0 : 1); - - // Find the device - // IC2 EPROM - PAL Y7 PROM 27256: A0-A14 + EPROM - if (~pla_data & PLA_EPROM) - { - byte = m_epromp[(offset & 0x7fff) % memregion("roms")->bytes()]; - LOGPROM("- EPROM %04x[%04x]->%02x\n", offset, (offset & 0x7fff) % memregion("roms")->bytes(), byte); - } - - // IC3 RAM0 - PAL Y3 SRAM 6264: A0-A12 + RAM13:1 (RAM14 connected to NC) - if ( (~pla_data & PLA_RAM0) && (pla_data & PLA_RAM13)) - { - byte = m_ram0[offset % sizeof(m_ram0)]; - LOGPLA("- RAM0 %04x->%02x\n", offset, byte); - } - - // IC4 RAM1 PAL Y4 SRAM 62256: A0-A12 + banked with RAM13/RAM14 data buffer 74LS245 enabled through PAL Y0 - if ( (~pla_data & PLA_RAM1) && (~pla_data & PLA_MPX) ) - { - uint16_t ofs = (offset & 0x1fff) | ((pla_data & PLA_RAM13) ? 0x2000 : 0) | ((pla_data & PLA_RAM14) ? 0x4000 : 0); - byte = m_ram1[ofs % sizeof(m_ram1)]; - LOGPLA("- RAM1 %04x->%02x\n", ofs, byte); - } - - // IC5 RAM2 - PAL Y5 SRAM 6264: A0-A12 + RAM13:1 (RAM14 connected to NC) data buffer 74LS245 enabled through PAL Y0 - if ( (~pla_data & PLA_RAM0) && (pla_data & PLA_RAM13) && (~pla_data & PLA_MPX) ) - { - byte = m_ram2[offset % sizeof(m_ram2)]; - LOGPLA("- RAM2 %04x->%02x\n", offset, byte); - } - - // IC11 74138 Y6 demultiplexer : A5, A5, A7 + A8:1 + A9:0 maps in the i/o area at some - if ( (~pla_data & PLA_IO1) && (~pla_data & PLA_MPX) && (offset & CPU_A8) && (~offset & CPU_A9) ) - { - switch (offset & 0x00f0) - { - case X0XX: // ACIA - LOGPLA("-- ACIA\n"); - byte = m_acia->read(offset & 1); - break; - case X1XX: // SYSPIA - LOGPLA("-- SYSPIA\n"); - byte = m_syspia->read_alt(offset & 3); - break; - case X2XX: // USRPIA - LOGPLA("-- USRPIA\n"); - byte = m_usrpia->read_alt(offset & 3); - break; - case X3XX: // PTM - LOGPLA("-- PTM\n"); - byte = m_ptm->read(offset & 7); - break; - case X4XX: // - LOGPLA("-- XX4X\n"); - break; - case X5XX: // J1, J2 - LOGPLA("-- XX5X\n"); - break; - case X6XX: // - LOGPLA("-- XX6X\n"); - break; - case X7XX: // J1, J2 - LOGPLA("-- XX7X\n"); - break; - } - } - LOGR("- %04x <- %02x\n\n", offset, byte); - return byte; -} - -WRITE8_MEMBER( can09t_state::write ) -{ - LOG("%s() %04x : %02x\n", FUNCNAME, offset, data); - uint8_t pla_offset = 0; - uint8_t pla_data = 0; - - // Form the offset into the PLA (see above for explanation on PLA hookup) - pla_offset = ((offset >> 12) & 0x0f) | (m_banksel ? 0x10 : 0x00); - - // Get the PLA data byte - pla_data = m_plap[pla_offset & 0x1f]; - LOGPLA("PLA[%02x] write: %02x Bank%d\n", pla_offset, pla_data, m_banksel != 0 ? 0 : 1); - - // Find the device - // IC2 EPROM - PAL Y7 PROM 27256: A0-A14 + EPROM* - if (~pla_data & PLA_EPROM) - { - LOGPLA("- EPROM (ignored) %04x<-%02x\n", offset, data); - } - - // IC3 RAM0 - PAL Y3 SRAM 6264: A0-A12 + RAM13:1 (RAM14 connected to NC) - if ( (~pla_data & PLA_RAM0) && (pla_data & PLA_RAM13)) - { - m_ram0[offset % sizeof(m_ram0)] = data; - LOGPLA("- RAM0 %04x<-%02x\n", offset, data); - } - - // IC4 RAM1 Y4 SRAM 62256: A0-A12 + banked with RAM13/RAM14 data buffer 74LS245 enabled through PAL Y0 - if ( (~pla_data & PLA_RAM1) && (~pla_data & PLA_MPX) ) - { - uint16_t ofs = (offset & 0x1fff) | ((pla_data & PLA_RAM13) ? 0x2000 : 0) | ((pla_data & PLA_RAM14) ? 0x4000 : 0); - m_ram1[ofs % sizeof(m_ram1)] = data; - LOGPLA("- RAM1 %04x<-%02x\n", ofs, data); - } - - // IC5 RAM2 - PAL Y5 SRAM 6264: A0-A12 + RAM13:1 (RAM14 connected to NC) data buffer 74LS245 enabled through PAL Y0 - if ( (~pla_data & PLA_RAM0) && (pla_data & PLA_RAM13) && (~pla_data & PLA_MPX) ) - { - m_ram2[offset % sizeof(m_ram2)] = data; - LOGPLA("- RAM2 %04x->%02x\n", offset, data); - } - - // IC11 74138 Y6 demultiplexer : A5, A5, A7 + A8:1 + A9:0 maps in the i/o area at some - if ( (~pla_data & PLA_IO1) && (~pla_data & PLA_MPX) && (offset & CPU_A8) && (~offset & CPU_A9) ) - { - LOGPLA("- IO1 %04x<-%02x\n", offset, data); - switch (offset & 0x00f0) - { - case X0XX: // ACIA - LOGPLA("-- ACIA\n"); - m_acia->write(offset & 1, data); - break; - case X1XX: // SYSPIA - LOGPLA("-- SYSPIA\n"); - m_syspia->write_alt(offset & 3, data); - break; - case X2XX: // USRPIA - LOGPLA("-- USRPIA\n"); - m_usrpia->write_alt(offset & 3, data); - break; - case X3XX: // PTM - LOGPLA("-- PTM\n"); - m_ptm->write(offset & 7, data); - break; - case X4XX: // - LOGPLA("-- XX4X\n"); - break; - case X5XX: // J1, J2 - LOGPLA("-- XX5X\n"); - break; - case X6XX: // - LOGPLA("-- XX6X\n"); - break; - case X7XX: // J1, J2 - LOGPLA("-- XX7X\n"); - break; - } - } -} - -READ8_MEMBER( can09t_state::syspia_A_r ) -{ - LOG("%s()\n", FUNCNAME); - return 0; -} - -READ8_MEMBER( can09t_state::syspia_B_r ) -{ - LOG("%s()\n", FUNCNAME); - u8 data = (m_cass->input() > 0.04) ? 0x80 : 0; - return data; -} - -WRITE8_MEMBER( can09t_state::syspia_B_w ) -{ - LOG("%s(%02x)\n", FUNCNAME, data); - - m_banksel = (data & 0x20) ? 0x10 : 0; - LOGBANK("Bank select: %d", (m_banksel >> 4) & 1); - m_cass->output(BIT(data, 6) ? 1.0 : -1.0); -} - -WRITE_LINE_MEMBER(can09t_state::syspia_cb2_w) -{ - LOG("%s(%02x)\n", FUNCNAME, state); -} - -WRITE_LINE_MEMBER(can09t_state::usrpia_cb2_w) -{ - LOG("%s(%02x)\n", FUNCNAME, state); -} - -WRITE_LINE_MEMBER (can09t_state::write_acia_clock){ - m_acia->write_txc (state); - m_acia->write_rxc (state); -} - -/* - * Address map from documentation based on specific PAL - * - * BANK 0 BANK 1 - * 0x0000-0x34ff PROM VDU-program 0x0000-0x34ff RAM0 user applications (0) - * 0x3500-0x5fff PROM simulator 0x3500-0x5fff RAM0 user applications (0) - * 0x6000-0x7fff RAM screen memory 0x6000-0x7fff RAM0 user applications (0) - * 0x8000-0x9fff RAM screen memory 0x8000-0x9fff PROM user applications (2) - * *0xa000-0xafff RAM Stack, system 0xa000-0xafff RAM Stack, system - * *0xb000-0xb0ff Free 0xb000-0xb0ff Free - * *0xb100-0xb101 ACIA 0xb100-0xb101 ACIA - * *0xb110-0xb113 PIA System 0xb110-0xb113 PIA System - * *0xb120-0xb123 PIA User apps 0xb120-0xb123 PIA User apps - * *0xb130-0xb137 PTM 0xb130-0xb137 PTM - * *0xb180-0xb1bf Free 0xb180-0xb1bf Free - * *0xb200-0xb3ff Free 0xb200-0xb3ff Free - * *0xc000-0xdfff RAM User apps (1) 0xc000-0xdfff RAM User apps (1) - * *0xe000-0xffff PROM monitor 0xe000-0xffff PROM monitor - */ - -void can09t_state::can09t_map(address_map &map) -{ -// Everything is dynamically and asymetrically mapped through the PAL decoded by read/write - map(0x0000, 0xffff).rw(FUNC(can09t_state::read), FUNC(can09t_state::write)); -} - -static INPUT_PORTS_START( can09t ) -INPUT_PORTS_END - -/* - * Candela Main Unit - * TODO: - * - Map PIA:S - * - ROM/RAM paging by using the PIAs and the myriad of 74138s on the board - * - Vram and screen for the 6845 CRTC - * - Check actual clock source for CRTC. An 8MHz UKI crystal is also nearby - * - Keyboard - * - Serial port - * - Floppy controller - * - Split out commonalities in a candela_state base class for can09 and can09t - */ -/* Candela main unit driver class */ - class can09_state : public driver_device -{ -public: - can09_state(const machine_config &mconfig, device_type type, const char * tag) - : driver_device(mconfig, type, tag) - ,m_maincpu(*this, "maincpu") - ,m_pia1(*this, PIA1_TAG) - ,m_ram(*this, RAM_TAG) - ,m_bank1(*this, "bank1") - ,m_crtc(*this, "crtc") - { } - - void can09(machine_config &config); - -protected: - required_device<cpu_device> m_maincpu; - virtual void machine_reset() override; - virtual void machine_start() override; - DECLARE_READ8_MEMBER( pia1_A_r ); - DECLARE_WRITE8_MEMBER( pia1_A_w ); - DECLARE_READ8_MEMBER( pia1_B_r ); - DECLARE_WRITE8_MEMBER( pia1_B_w ); - DECLARE_WRITE_LINE_MEMBER( pia1_cb2_w); - uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); - void can09_map(address_map &map); - required_device<pia6821_device> m_pia1; - required_device<ram_device> m_ram; - required_memory_bank m_bank1; - required_device<hd6845s_device> m_crtc; -}; - -void can09_state::machine_reset() -{ - LOG("%s()\n", FUNCNAME); - m_bank1->set_entry(0); -} - -void can09_state::machine_start() -{ - LOG("%s()\n", FUNCNAME); - m_bank1->configure_entries(0, 8, m_ram->pointer(), 0x8000); -} - -uint32_t can09_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - int x, y; -#if 0 - int vramad; - UINT8 *chardata; - UINT8 charcode; -#endif - - LOGSCREEN("%s()\n", FUNCNAME); - // vramad = 0; - for (int row = 0; row < 72 * 8; row += 8) - { - for (int col = 0; col < 64 * 8; col += 8) - { -#if 0 - /* look up the character data */ - charcode = m_vram[vramad]; - if (VERBOSE && charcode != 0x20 && charcode != 0) LOGSCREEN("\n %c at X=%d Y=%d: ", charcode, col, row); - chardata = &m_char_ptr[(charcode * 8)]; -#endif - /* plot the character */ - for (y = 0; y < 8; y++) - { - // if (VERBOSE && charcode != 0x20 && charcode != 0) LOGSCREEN("\n %02x: ", *chardata); - for (x = 0; x < 8; x++) - { - // if (VERBOSE && charcode != 0x20 && charcode != 0) LOGSCREEN(" %02x: ", *chardata); - bitmap.pix16(row + y, col + x) = x & 1; //(*chardata & (1 << x)) ? 1 : 0; - } - // chardata++; - } - // vramad++; - } - // if (VERBOSE && charcode != 0x20 && charcode != 0) LOGSCREEN("\n"); - } - - return 0; -} - -READ8_MEMBER( can09_state::pia1_A_r ) -{ - LOG("%s()\n", FUNCNAME); - return 0x40; -} - -WRITE8_MEMBER( can09_state::pia1_A_w ) -{ - LOG("%s(%02x)\n", FUNCNAME, data); -} - -READ8_MEMBER( can09_state::pia1_B_r ) -{ - LOG("%s()\n", FUNCNAME); - return 0; -} - -WRITE8_MEMBER( can09_state::pia1_B_w ) -{ - // UINT8 *RAM = memregion("maincpu")->base(); - LOG("%s(%02x)\n", FUNCNAME, data); - // membank("bank1")->set_entry((data & 0x70) >> 4); - m_bank1->set_entry((data & 0x70) >> 4); -#if 0 - switch (data & 0x70){ - case 0x00: membank("bank1")->set_base(&RAM[0x10000]); break; - case 0x10: membank("bank1")->set_base(&RAM[0x18000]); break; - case 0x20: membank("bank1")->set_base(&RAM[0x20000]); break; - case 0x30: membank("bank1")->set_base(&RAM[0x28000]); break; - case 0x40: membank("bank1")->set_base(&RAM[0x30000]); break; - case 0x50: membank("bank1")->set_base(&RAM[0x38000]); break; - case 0x60: membank("bank1")->set_base(&RAM[0x40000]); logerror("strange memory bank"); break; - case 0x70: membank("bank1")->set_base(&RAM[0x48000]); logerror("strange memory bank"); break; - default: logerror("%s Programming error, please report!\n", FUNCNAME); - } -#endif -} - -WRITE_LINE_MEMBER(can09_state::pia1_cb2_w) -{ - LOG("%s(%02x)\n", FUNCNAME, state); -} - -static INPUT_PORTS_START( can09 ) - PORT_START("LINE0") - PORT_START("LINE1") - PORT_START("LINE2") - PORT_START("LINE3") - PORT_START("LINE4") -INPUT_PORTS_END - -// traced and guessed from pcb images and debugger -// It is very likely that this is a PIA based dynamic address map, needs more analysis -void can09_state::can09_map(address_map &map) -{ -/* - * Port A=0x18 B=0x20 erase 0-7fff - * Port A=0x18 B=0x30 erase 0-7fff - * Port A=0x18 B=0x00 - * Port A=0x10 B= -*/ -// map(0x0000, 0x7fff).ram(); - map(0x0000, 0x7fff).ram().bankrw("bank1"); - map(0xe000, 0xffff).rom().region("roms", 0); - map(0xe020, 0xe020).w(m_crtc, FUNC(hd6845s_device::address_w)); - map(0xe021, 0xe021).w(m_crtc, FUNC(hd6845s_device::register_w)); - map(0xe034, 0xe037).rw(m_pia1, FUNC(pia6821_device::read), FUNC(pia6821_device::write)); - -#if 0 - map(0xb100, 0xb101).rw("acia", FUNC(acia6850_device::read), FUNC(acia6850_device::write)); - map(0xb110, 0xb113).rw(m_pia1, FUNC(pia6821_device::read_alt), FUNC(pia6821_device::write_alt)); - map(0xb120, 0xb123).rw(PIA2_TAG, FUNC(pia6821_device::read_alt), FUNC(pia6821_device::write_alt)); - map(0xb130, 0xb137).rw("ptm", FUNC(ptm6840_device::read), FUNC(ptm6840_device::write)); - map(0xb200, 0xc1ff).rom().region("roms", 0x3200); - map(0xc200, 0xdfff).ram(); /* Needed for BASIC etc */ -#endif -} - -#ifdef UNUSED_VARIABLE -static DEVICE_INPUT_DEFAULTS_START( terminal ) - DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_300 ) - DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_300 ) - DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 ) - DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 ) - DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE ) - DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 ) -DEVICE_INPUT_DEFAULTS_END -#endif - -/* Fake clock values until we TODO: figure out how the PTM generates the clocks */ -#define CAN09T_BAUDGEN_CLOCK 1.8432_MHz_XTAL -#define CAN09T_ACIA_CLOCK (CAN09T_BAUDGEN_CLOCK / 12) - -void can09t_state::can09t(machine_config &config) -{ - MC6809(config, m_maincpu, 4.9152_MHz_XTAL); // IPL crystal - m_maincpu->set_addrmap(AS_PROGRAM, &can09t_state::can09t_map); - - /* --PIA inits----------------------- */ - PIA6821(config, m_syspia, 0); // CPU board - m_syspia->readpa_handler().set(FUNC(can09t_state::syspia_A_r)); - m_syspia->readpb_handler().set(FUNC(can09t_state::syspia_B_r)); - m_syspia->writepb_handler().set(FUNC(can09t_state::syspia_B_w)); - m_syspia->cb2_handler().set(FUNC(can09t_state::syspia_cb2_w)); - /* 0xE1FB 0xB112 (SYSPIA Control A) = 0x00 - Channel A IRQ disabled */ - /* 0xE1FB 0xB113 (SYSPIA Control B) = 0x00 - Channel B IRQ disabled */ - /* 0xE203 0xB110 (SYSPIA DDR A) = 0x00 - Port A all inputs */ - /* 0xE203 0xB111 (SYSPIA DDR B) = 0x7F - Port B mixed mode */ - /* 0xE20A 0xB112 (SYSPIA Control A) = 0x05 - IRQ A enabled on falling transition on CA2 */ - /* 0xE20A 0xB113 (SYSPIA Control B) = 0x34 - CB2 is low and lock DDRB */ - /* 0xE20E 0xB111 (SYSPIA port B) = 0x10 - Data to port B */ - - PIA6821(config, m_usrpia, 0); // CPU board - m_usrpia->cb2_handler().set(FUNC(can09t_state::usrpia_cb2_w)); - /* 0xE212 0xB122 (USRPIA Control A) = 0x00 - Channel A IRQ disabled */ - /* 0xE212 0xB123 (USRPIA Control B) = 0x00 - Channel B IRQ disabled */ - /* 0xE215 0xB120 (USRPIA DDR A) = 0x00 - Port A all inputs */ - /* 0xE215 0xB121 (USRPIA DDR B) = 0xFF - Port B all outputs */ - /* 0xE21A 0xB122 (USRPIA Control A) = 0x34 - CA2 is low and lock DDRB */ - /* 0xE21A 0xB123 (USRPIA Control B) = 0x34 - CB2 is low and lock DDRB */ - PIA6821(config, m_pia3, 0); // ROM board - PIA6821(config, m_pia4, 0); // ROM board - - PTM6840(config, "ptm", 0); - - /* RS232 usage: mame can09t -window -debug -rs232 terminal */ - ACIA6850(config, m_acia, 0); - m_acia->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd)); - m_acia->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts)); - rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, "terminal")); - rs232.rxd_handler().set(m_acia, FUNC(acia6850_device::write_rxd)); - rs232.cts_handler().set(m_acia, FUNC(acia6850_device::write_cts)); - - CLOCK(config, "acia_clock", CAN09T_ACIA_CLOCK).signal_handler().set(FUNC(can09t_state::write_acia_clock)); - - SPEAKER(config, "mono").front_center(); - CASSETTE(config, m_cass); - m_cass->set_default_state(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED); - m_cass->add_route(ALL_OUTPUTS, "mono", 0.05); -} - -#define CAN09_X1_CLOCK 22.1184_MHz_XTAL /* UKI 22118.40 Khz */ -#define CAN09_CPU_CLOCK (CAN09_X1_CLOCK / 16) /* ~1.38MHz Divider needs to be check but is the most likelly */ -void can09_state::can09(machine_config &config) -{ - MC6809E(config, m_maincpu, CAN09_CPU_CLOCK); // MC68A09EP - m_maincpu->set_addrmap(AS_PROGRAM, &can09_state::can09_map); - - /* RAM banks */ - RAM(config, RAM_TAG).set_default_size("768K"); - - // CRTC init - hd6845s_device &crtc(HD6845S(config, "crtc", CAN09_CPU_CLOCK)); // HD46505SP-1 (HD68A45SP) - crtc.set_screen("screen"); - crtc.set_show_border_area(false); - crtc.set_char_width(8); - //crtc.set_update_row_callback(FUNC(can09_state::crtc_update_row), this); // not written yet - - /* Setup loop from data table in ROM: 0xFFCB 0xE020 (CRTC register number), 0xFFD0 0xE021 (CRTC register value) - Reg Value Comment - 0x00 0x55 Horizontal Total number of characters, - 0x01 0x40 Horizontal Displayed number of characters - 0x02 0x43 Horizontal Sync Position, character number - 0x03 0x03 Horizontal Sync width, number of charcters - 0x04 0x50 Vertical Total number of characters - 0x05 0x09 Vertical Total Adjust number of characters - 0x06 0x48 Vertical Displayed number of characters - 0x07 0x4B Vertical Sync Position, character number - 0x08 0x00 Interlace Mode/Scew, Non-Interlaced - 0x09 0x03 Max Scan Line Address Register - 0x0A 0x00 Cursor Start - 0x0B 0x0A Cursor End - 0x0C 0x00 Start Address hi - 0x0D 0x00 Start Address lo - 0x0E 0x00 Cursor hi - 0x0F 0x00 Cursor lo - Note - no init of Light Pen registers - */ - - - - /* screen - totally faked value for now */ - screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); - screen.set_refresh_hz(50); - screen.set_raw(4_MHz_XTAL / 2, 512, 0, 512, 576, 0, 576); - screen.set_screen_update(FUNC(can09_state::screen_update)); - screen.set_palette("palette"); - PALETTE(config, "palette", palette_device::MONOCHROME); - - /* Floppy */ - WD1770(config, "wd1770", 8_MHz_XTAL); // TODO: Verify 8MHz UKI crystal assumed to be used -#if 0 - FLOPPY_CONNECTOR(config, "wd1770:0", candela_floppies, "3dd", floppy_image_device::default_floppy_formats); - SOFTWARE_LIST(config, "flop3_list").set_original("candela"); -#endif - - /* --PIA inits----------------------- */ - PIA6821(config, m_pia1, 0); // CPU board - m_pia1->readpa_handler().set(FUNC(can09_state::pia1_A_r)); - m_pia1->writepa_handler().set(FUNC(can09_state::pia1_A_w)); - m_pia1->readpb_handler().set(FUNC(can09_state::pia1_B_r)); - m_pia1->writepb_handler().set(FUNC(can09_state::pia1_B_w)); - m_pia1->cb2_handler().set(FUNC(can09_state::pia1_cb2_w)); - /* 0xFF7D 0xE035 (PIA1 Control A) = 0x00 - Channel A IRQ disabled */ - /* 0xFF81 0xE037 (PIA1 Control B) = 0x00 - Channel A IRQ disabled */ - /* 0xFF85 0xE034 (PIA1 DDR A) = 0x1F - Port A mixed mode */ - /* 0xFF89 0xE036 (PIA1 DDR B) = 0x79 - Port B mixed mode */ - /* 0xFF8D 0xE035 (PIA1 Control A) = 0x04 - Channel A lock DDR */ - /* 0xFF8F 0xE037 (PIA1 Control B) = 0x04 - Channel B lock DDR */ - /* 0xFF93 0xE034 (PIA1 Port B) = 0x18 - Write Data on Port B */ - -#if 1 - PIA6821(config, PIA2_TAG, 0); // CPU board - ACIA6850(config, "acia1", 0); // CPU board - ACIA6850(config, "acia2", 0); // CPU board -#endif -} - -ROM_START( can09t ) /* The smaller grey computer */ - ROM_REGION(0x10000, "roms", 0) - /* CAN09 v7 and CDBASIC 3.8 */ - ROM_LOAD( "ic2-mon58b-c8d7.bin", 0x0000, 0x8000, CRC(7eabfec6) SHA1(e08e2349035389b441227df903aa54f4c1e4a337) ) - - ROM_REGION(0x1000, "plas", 0) - /* Programmable logic for the CAN09 1.4 PCB (CAN21.1) */ - ROM_LOAD( "ic10-21.1.bin", 0x0000, 0x20, CRC(b75ac72d) SHA1(689363200035b11a823d17a8d717f313eeefc3bf) ) -ROM_END - -ROM_START( can09 ) /* The bigger black computer CAN v1 */ - ROM_REGION(0x10000, "roms", 0) - ROM_LOAD( "ic14-vdu42.bin", 0x0000, 0x2000, CRC(67fc3c8c) SHA1(1474d6259646798377ef4ce7e43d3c8d73858344) ) -ROM_END - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1984, can09, 0, 0, can09, can09, can09_state, empty_init, "Candela Data AB", "Candela CAN09 v1", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_IMPERFECT_GRAPHICS) -COMP( 1984, can09t, 0, 0, can09t, can09t, can09t_state, empty_init, "Candela Data AB", "Candela CAN09", MACHINE_NO_SOUND_HW ) |