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Diffstat (limited to 'src/mame/drivers/pda600.c')
-rw-r--r-- | src/mame/drivers/pda600.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/src/mame/drivers/pda600.c b/src/mame/drivers/pda600.c new file mode 100644 index 00000000000..a3e8f3d453e --- /dev/null +++ b/src/mame/drivers/pda600.c @@ -0,0 +1,238 @@ +// 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" + + +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<cpu_device> m_maincpu; + + virtual void video_start(); + virtual void machine_reset(); + UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + + UINT8 * m_video_ram; +}; + + +static ADDRESS_MAP_START(pda600_mem, AS_PROGRAM, 8, pda600_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x00000, 0x1ffff) AM_ROM + //AM_RANGE(0x20000, 0x9ffff) AM_RAM // PCMCIA Card + AM_RANGE(0xa0000, 0xa7fff) AM_RAM AM_REGION("videoram", 0) + AM_RANGE(0xe0000, 0xfffff) AM_RAM AM_REGION("mainram", 0) AM_SHARE("nvram") +ADDRESS_MAP_END + +static ADDRESS_MAP_START(pda600_io, AS_IO, 8, pda600_state) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x00, 0x3f) AM_NOP /* Z180 internal registers */ + //AM_RANGE(0x40, 0x7f) AM_NOP /* Z180 internal registers */ + AM_RANGE(0x80, 0x8f) AM_DEVREADWRITE("rtc", hd64610_device, read, write) + //AM_RANGE(0xC0, 0xC1) AM_NOP /* LCD */ +ADDRESS_MAP_END + +/* 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 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 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 + + +static MACHINE_CONFIG_START( pda600, pda600_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z180, XTAL_14_31818MHz) + 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_BLACK_AND_WHITE("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_768kHz) +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 INIT COMPANY FULLNAME FLAGS */ +COMP( 1993, pda600, 0, 0, pda600, pda600, driver_device, 0, "Amstrad plc", "PenPad PDA 600", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) |