// license:BSD-3-Clause // copyright-holders:Sandro Ronco /*************************************************************************** Amstrad PenPad PDA 600 05/11/2009 Skeleton driver. Hardware info: U1: CPU Z8S180 Enhanced Z80 CPU 1 MB MMU 2 DMAs 2 UARTs (up to 512 Kbps) Two 16-Bit Timers Clock Serial I/O U2: ROM contains OS (binary and disassembled source) apparently compatible to 27C1001 (128K*8) U3: RAM 128K RAM, static U4: RTC U5: Amstrad ASIC (unknown functionality ) U6, U7, U8, U9: Multiplexer quad channel dual multiplexer U11: RAM 32K RAM, static U12: LCD Controller U21: 5V StepUp converter voltage converter U27: OA quad operational amplifier U30: RS232 Driver U31: Amstrad ASIC U32: FlipFlop Octal D-Flip-Flop U33: RAM 32K RAM, static U35: Tone Dialer generates DTMF frequencies U36: unknown U37: Nand Dual Quad-Input Nand U43: Bus Buffer Octal Bus Buffer Connectors: LCD Digitizer Serial PCMCIA Additional info: Two Z8 for power management and character recognition ****************************************************************************/ #include "emu.h" #include "cpu/z180/z180.h" #include "machine/nvram.h" #include "machine/hd64610.h" #include "rendlay.h" #include "screen.h" class pda600_state : public driver_device { public: pda600_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu") {} required_device m_maincpu; virtual void video_start() override; virtual void machine_reset() override; uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); uint8_t * m_video_ram; void pda600(machine_config &config); void pda600_io(address_map &map); void pda600_mem(address_map &map); }; void pda600_state::pda600_mem(address_map &map) { map.unmap_value_high(); map(0x00000, 0x1ffff).rom(); //AM_RANGE(0x20000, 0x9ffff) AM_RAM // PCMCIA Card map(0xa0000, 0xa7fff).ram().region("videoram", 0); map(0xe0000, 0xfffff).ram().region("mainram", 0).share("nvram"); } void pda600_state::pda600_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x00, 0x3f).noprw(); /* Z180 internal registers */ //AM_RANGE(0x40, 0x7f) AM_NOP /* Z180 internal registers */ map(0x80, 0x8f).rw("rtc", FUNC(hd64610_device::read), FUNC(hd64610_device::write)); //AM_RANGE(0xC0, 0xC1) AM_NOP /* LCD */ } /* Input ports */ static INPUT_PORTS_START( pda600 ) INPUT_PORTS_END void pda600_state::machine_reset() { // the PDA600 soon after start waits for something from the Z180 CSIO, I do not know exactly for what // the CSIO is used and for now I forced the CNTR End-Flag bit to 1 for allow the emulation to continue. m_maincpu->set_state_int(Z180_CNTR, m_maincpu->state_int(Z180_CNTR) | 0x80); } void pda600_state::video_start() { m_video_ram = memregion("videoram")->base(); } uint32_t pda600_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { for (int y=0; y<320; y++) for (int x=0; x<30; x++) { uint8_t data = m_video_ram[y*30 + x]; for (int px=0; px<8; px++) { bitmap.pix16(y, (x * 8) + px) = BIT(data, 7); data <<= 1; } } return 0; } static const gfx_layout pda600_charlayout_8 = { 8, 8, 49, 1, { 0 }, { 0,1,2,3,4,5,6,7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, 8*8 }; static const gfx_layout pda600_charlayout_13 = { 8, 13, 123, 1, { 0 }, { 0,1,2,3,4,5,6,7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12 }, 8*13 }; static const gfx_layout pda600_charlayout_13a = { 8, 13, 132, 1, { 0 }, { 0,1,2,3,4,5,6,7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12 }, 8*13 }; static const gfx_layout pda600_charlayout_19 = { 8, 19, 32, 1, { 0 }, { 0,1,2,3,4,5,6,7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12, 8*13, 8*14, 8*15, 8*16, 8*17, 8*18 }, 8*19 }; static const gfx_layout pda600_charlayout_19a = { 8, 19, 11, 1, { 0 }, { 0,1,2,3,4,5,6,7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 8*9, 8*10, 8*11, 8*12, 8*13, 8*14, 8*15, 8*16, 8*17, 8*18 }, 8*19 }; static GFXDECODE_START( pda600 ) GFXDECODE_ENTRY( "maincpu", 0x45cd, pda600_charlayout_19, 0, 1 ) GFXDECODE_ENTRY( "maincpu", 0x4892, pda600_charlayout_19a, 0, 1 ) GFXDECODE_ENTRY( "maincpu", 0x4d73, pda600_charlayout_8, 0, 1 ) GFXDECODE_ENTRY( "maincpu", 0x5b8f, pda600_charlayout_13, 0, 1 ) GFXDECODE_ENTRY( "maincpu", 0x61d3, pda600_charlayout_13a, 0, 1 ) GFXDECODE_END MACHINE_CONFIG_START(pda600_state::pda600) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z180, XTAL(14'318'181)) MCFG_CPU_PROGRAM_MAP(pda600_mem) MCFG_CPU_IO_MAP(pda600_io) /* video hardware */ MCFG_SCREEN_ADD("screen", LCD) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(240, 320) MCFG_SCREEN_VISIBLE_AREA(0, 240-1, 0, 320-1) MCFG_SCREEN_UPDATE_DRIVER( pda600_state, screen_update ) MCFG_SCREEN_PALETTE("palette") MCFG_GFXDECODE_ADD("gfxdecode", "palette", pda600) MCFG_DEFAULT_LAYOUT(layout_lcd) MCFG_PALETTE_ADD_MONOCHROME("palette") // NVRAM needs to be filled with random data to fail the checksum and be initialized correctly MCFG_NVRAM_ADD_RANDOM_FILL("nvram") MCFG_DEVICE_ADD("rtc", HD64610, XTAL(32'768)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( pda600 ) ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "pdarom.bin", 0x00000, 0x20000, CRC(f793a6c5) SHA1(ab14b0fdcedb927c66357368a2bfff605ba758fb)) // 128KB RAM ROM_REGION( 0x20000, "mainram", ROMREGION_ERASE ) // 32KB Video RAM ROM_REGION( 0x8000, "videoram", ROMREGION_ERASE ) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */ COMP( 1993, pda600, 0, 0, pda600, pda600, pda600_state, 0, "Amstrad plc", "PenPad PDA 600", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)