trunk/src/mess/drivers/alphasma.c
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| 4 | 4 | |
| 5 | 5 | 08/28/2012 Skeleton driver |
| 6 | 6 | |
| 7 | TODO: |
| 8 | - define video HW capabilities |
| 9 | - "Addr. Bus RAM error" string read, presumably memory mapped RAM at 0x8000 |
| 10 | is actually a r/w bank register. |
| 11 | |
| 7 | 12 | ****************************************************************************/ |
| 8 | 13 | |
| 9 | 14 | #include "emu.h" |
| 10 | 15 | #include "cpu/mc68hc11/mc68hc11.h" |
| 16 | #include "video/hd44780.h" |
| 11 | 17 | #include "rendlay.h" |
| 12 | 18 | |
| 13 | 19 | class alphasmart_state : public driver_device |
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| 20 | 26 | |
| 21 | 27 | required_device<cpu_device> m_maincpu; |
| 22 | 28 | |
| 29 | DECLARE_WRITE8_MEMBER(vram_w); |
| 30 | |
| 23 | 31 | virtual void machine_start(); |
| 24 | 32 | virtual void palette_init(); |
| 25 | | virtual UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); |
| 33 | // virtual UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); |
| 26 | 34 | }; |
| 27 | 35 | |
| 36 | |
| 28 | 37 | static ADDRESS_MAP_START(alphasmart_mem, AS_PROGRAM, 8, alphasmart_state) |
| 29 | 38 | ADDRESS_MAP_UNMAP_HIGH |
| 30 | 39 | AM_RANGE( 0x0000, 0x7fff ) AM_RAM |
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| 32 | 41 | ADDRESS_MAP_END |
| 33 | 42 | |
| 34 | 43 | static ADDRESS_MAP_START(alphasmart_io, AS_IO, 8, alphasmart_state) |
| 44 | // AM_RANGE(MC68HC11_IO_PORTA, MC68HC11_IO_PORTA) AM_DEVREADWRITE("hd44780", hd44780_device, control_read, control_write) |
| 45 | // AM_RANGE(MC68HC11_IO_PORTD, MC68HC11_IO_PORTD) AM_DEVREADWRITE("hd44780", hd44780_device, data_read, data_write) |
| 35 | 46 | ADDRESS_MAP_END |
| 36 | 47 | |
| 37 | 48 | /* Input ports */ |
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| 48 | 59 | { |
| 49 | 60 | } |
| 50 | 61 | |
| 51 | | UINT32 alphasmart_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) |
| 52 | | { |
| 53 | | return 0; |
| 54 | | } |
| 55 | | |
| 56 | 62 | static const hc11_config alphasmart_hc11_config = |
| 57 | 63 | { |
| 58 | 64 | 0, //has extended internal I/O |
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| 60 | 66 | 0x00 //registers are at 0-0x3f |
| 61 | 67 | }; |
| 62 | 68 | |
| 69 | static HD44780_INTERFACE( alphasmart_4line_display ) |
| 70 | { |
| 71 | 4, // number of lines |
| 72 | 16, // chars for line |
| 73 | NULL // pixel update callback |
| 74 | }; |
| 75 | |
| 63 | 76 | static MACHINE_CONFIG_START( alphasmart, alphasmart_state ) |
| 64 | 77 | /* basic machine hardware */ |
| 65 | 78 | MCFG_CPU_ADD("maincpu", MC68HC11, XTAL_8MHz/2) // MC68HC11D0, XTAL is 8 Mhz, unknown divider |
| 66 | 79 | MCFG_CPU_PROGRAM_MAP(alphasmart_mem) |
| 67 | 80 | MCFG_CPU_IO_MAP(alphasmart_io) |
| 68 | 81 | MCFG_CPU_CONFIG(alphasmart_hc11_config) |
| 69 | | MCFG_CPU_PERIODIC_INT_DRIVER(alphasmart_state, irq0_line_hold, 50) |
| 82 | // MCFG_CPU_PERIODIC_INT_DRIVER(alphasmart_state, irq0_line_hold, 50) |
| 70 | 83 | |
| 84 | MCFG_HD44780_ADD("hd44780", alphasmart_4line_display) |
| 85 | |
| 71 | 86 | /* video hardware */ |
| 72 | 87 | MCFG_SCREEN_ADD("screen", LCD) |
| 73 | 88 | MCFG_SCREEN_REFRESH_RATE(50) |
| 74 | 89 | MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ |
| 75 | | MCFG_SCREEN_UPDATE_DRIVER(alphasmart_state, screen_update) |
| 90 | MCFG_SCREEN_UPDATE_DEVICE("hd44780", hd44780_device, screen_update) |
| 76 | 91 | MCFG_SCREEN_SIZE(6*40, 9*4) |
| 77 | 92 | MCFG_SCREEN_VISIBLE_AREA(0, (6*40)-1, 0, (9*4)-1) |
| 78 | 93 | MCFG_PALETTE_LENGTH(2) |
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| 83 | 98 | ROM_START( alphasma ) |
| 84 | 99 | ROM_REGION( 0x8000, "maincpu", 0 ) |
| 85 | 100 | ROM_LOAD( "alphasmartpro212.rom", 0x0000, 0x8000, CRC(896ddf1c) SHA1(c3c6a421c9ced92db97431d04b4a3f09a39de716) ) // Checksum 8D24 on label |
| 101 | |
| 102 | ROM_REGION( 0x0860, "hd44780", ROMREGION_ERASE ) |
| 103 | ROM_LOAD( "44780a00.bin", 0x0000, 0x0860, BAD_DUMP CRC(3a89024c) SHA1(5a87b68422a916d1b37b5be1f7ad0b3fb3af5a8d)) |
| 86 | 104 | ROM_END |
| 87 | 105 | |
| 88 | 106 | |