// license:MAME // copyright-holders:Miodrag Milanovic, Robbbert /*************************************************************************** Robotron K8915 30/08/2010 Skeleton driver When it says DIAGNOSTIC RAZ P, press enter. ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/keyboard.h" #define KEYBOARD_TAG "keyboard" class k8915_state : public driver_device { public: k8915_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_p_videoram(*this, "p_videoram") { } required_device m_maincpu; DECLARE_READ8_MEMBER( k8915_52_r ); DECLARE_READ8_MEMBER( k8915_53_r ); DECLARE_WRITE8_MEMBER( k8915_a8_w ); DECLARE_WRITE8_MEMBER( kbd_put ); required_shared_ptr m_p_videoram; UINT8 *m_p_chargen; UINT8 m_framecnt; UINT8 m_term_data; virtual void machine_reset(); virtual void video_start(); UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); DECLARE_DRIVER_INIT(k8915); }; READ8_MEMBER( k8915_state::k8915_52_r ) { // get data from ascii keyboard UINT8 ret = m_term_data; m_term_data = 0; return ret; } READ8_MEMBER( k8915_state::k8915_53_r ) { // keyboard status return m_term_data ? 1 : 0; } WRITE8_MEMBER( k8915_state::k8915_a8_w ) { // seems to switch ram and rom around. if (data == 0x87) membank("boot")->set_entry(0); // ram at 0000 else membank("boot")->set_entry(1); // rom at 0000 } static ADDRESS_MAP_START(k8915_mem, AS_PROGRAM, 8, k8915_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x0000, 0x0fff) AM_RAMBANK("boot") AM_RANGE(0x1000, 0x17ff) AM_RAM AM_SHARE("p_videoram") AM_RANGE(0x1800, 0xffff) AM_RAM ADDRESS_MAP_END static ADDRESS_MAP_START(k8915_io, AS_IO, 8, k8915_state) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x52, 0x52) AM_READ(k8915_52_r) AM_RANGE(0x53, 0x53) AM_READ(k8915_53_r) AM_RANGE(0xa8, 0xa8) AM_WRITE(k8915_a8_w) ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( k8915 ) INPUT_PORTS_END void k8915_state::machine_reset() { membank("boot")->set_entry(1); } DRIVER_INIT_MEMBER(k8915_state,k8915) { UINT8 *RAM = memregion("maincpu")->base(); membank("boot")->configure_entries(0, 2, &RAM[0x0000], 0x10000); } void k8915_state::video_start() { m_p_chargen = memregion("chargen")->base(); } UINT32 k8915_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { UINT8 y,ra,chr,gfx; UINT16 sy=0,ma=0,x; m_framecnt++; for (y = 0; y < 25; y++) { for (ra = 0; ra < 10; ra++) { UINT16 *p = &bitmap.pix16(sy++); for (x = ma; x < ma + 80; x++) { gfx = 0; if (ra < 9) { chr = m_p_videoram[x]; /* Take care of flashing characters */ if ((chr & 0x80) && (m_framecnt & 0x08)) chr = 0x20; chr &= 0x7f; gfx = m_p_chargen[(chr<<4) | ra ]; } /* 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); } } ma+=80; } return 0; } WRITE8_MEMBER( k8915_state::kbd_put ) { m_term_data = data; } static MACHINE_CONFIG_START( k8915, k8915_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz / 4) MCFG_CPU_PROGRAM_MAP(k8915_mem) MCFG_CPU_IO_MAP(k8915_io) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_UPDATE_DRIVER(k8915_state, screen_update) MCFG_SCREEN_SIZE(640, 250) MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 249) MCFG_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette") MCFG_DEVICE_ADD(KEYBOARD_TAG, GENERIC_KEYBOARD, 0) MCFG_GENERIC_KEYBOARD_CB(WRITE8(k8915_state, kbd_put)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( k8915 ) ROM_REGION( 0x11000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "k8915.bin", 0x10000, 0x1000, CRC(ca70385f) SHA1(a34c14adae9be821678aed7f9e33932ee1f3e61c)) /* character generator not dumped, using the one from 'c10' for now */ ROM_REGION( 0x2000, "chargen", 0 ) ROM_LOAD( "c10_char.bin", 0x0000, 0x2000, BAD_DUMP CRC(cb530b6f) SHA1(95590bbb433db9c4317f535723b29516b9b9fcbf)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1982, k8915, 0, 0, k8915, k8915, k8915_state, k8915, "Robotron", "K8915", GAME_NOT_WORKING | GAME_NO_SOUND)