#include "includes/mikromik.h" //------------------------------------------------- // PALETTE_INIT( mm1 ) //------------------------------------------------- static PALETTE_INIT( mm1 ) { palette_set_color(machine, 0, RGB_BLACK); /* black */ palette_set_color_rgb(machine, 1, 0x00, 0xc0, 0x00); /* green */ palette_set_color_rgb(machine, 2, 0x00, 0xff, 0x00); /* bright green */ } //------------------------------------------------- // i8275_interface crtc_intf //------------------------------------------------- static I8275_DISPLAY_PIXELS( crtc_display_pixels ) { mm1_state *state = device->machine().driver_data(); UINT8 romdata = state->m_char_rom[(charcode << 4) | linecount]; int d0 = BIT(romdata, 0); int d7 = BIT(romdata, 7); int gpa0 = BIT(gpa, 0); int llen = state->m_llen; int i; UINT8 data = (romdata << 1) | (d7 & d0); for (i = 0; i < 8; i++) { int qh = BIT(data, i); int video_in = ((((d7 & llen) | !vsp) & !gpa0) & qh) | lten; int compl_in = rvv; int hlt_in = hlgt; int color = hlt_in ? 2 : (video_in ^ compl_in); state->m_bitmap.pix16(y, x + i) = color; } } static const i8275_interface crtc_intf = { SCREEN_TAG, 8, 0, DEVCB_DEVICE_LINE_MEMBER(I8237_TAG, am9517a_device, dreq0_w), DEVCB_NULL, crtc_display_pixels }; //------------------------------------------------- // ADDRESS_MAP( mm1_upd7220_map ) //------------------------------------------------- static ADDRESS_MAP_START( mm1_upd7220_map, AS_0, 8, mm1_state ) AM_RANGE(0x00000, 0x3ffff) AM_RAM AM_SHARE("video_ram") ADDRESS_MAP_END //------------------------------------------------- // UPD7220_INTERFACE( hgdc_intf ) //------------------------------------------------- static UPD7220_DISPLAY_PIXELS( hgdc_display_pixels ) { mm1_state *state = device->machine().driver_data(); UINT8 data = state->m_video_ram[address * 2]; for (int i = 0; i < 8; i++) { if (BIT(data, i)) bitmap.pix16(y, x + i) = 1; } } static UPD7220_INTERFACE( hgdc_intf ) { SCREEN_TAG, hgdc_display_pixels, NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; //------------------------------------------------- // VIDEO_START( mm1 ) //------------------------------------------------- void mm1_state::video_start() { // find memory regions m_char_rom = memregion("chargen")->base(); machine().primary_screen->register_screen_bitmap(m_bitmap); } //------------------------------------------------- // SCREEN_UPDATE_IND16( mm1 ) //------------------------------------------------- UINT32 mm1_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { /* text */ i8275_update(m_crtc, bitmap, cliprect); copybitmap(bitmap, m_bitmap, 0, 0, 0, 0, cliprect); /* graphics */ m_hgdc->screen_update(screen, bitmap, cliprect); return 0; } //------------------------------------------------- // gfx_layout charlayout //------------------------------------------------- static const gfx_layout charlayout = { 8, 16, RGN_FRAC(1,1), 1, { 0 }, { 7, 6, 5, 4, 3, 2, 1, 0 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 }, 8*16 }; //------------------------------------------------- // GFXDECODE( mm1 ) //------------------------------------------------- static GFXDECODE_START( mm1 ) GFXDECODE_ENTRY( "chargen", 0, charlayout, 0, 0x100 ) GFXDECODE_END //------------------------------------------------- // MACHINE_CONFIG_FRAGMENT( mm1m6_video ) //------------------------------------------------- MACHINE_CONFIG_FRAGMENT( mm1m6_video ) MCFG_SCREEN_ADD( SCREEN_TAG, RASTER ) MCFG_SCREEN_REFRESH_RATE( 50 ) MCFG_SCREEN_UPDATE_DRIVER(mm1_state, screen_update) MCFG_SCREEN_SIZE( 800, 400 ) MCFG_SCREEN_VISIBLE_AREA( 0, 800-1, 0, 400-1 ) //MCFG_SCREEN_RAW_PARAMS(XTAL_18_720MHz, ...) MCFG_GFXDECODE(mm1) MCFG_PALETTE_LENGTH(3) MCFG_PALETTE_INIT(mm1) MCFG_I8275_ADD(I8275_TAG, crtc_intf) MCFG_UPD7220_ADD(UPD7220_TAG, XTAL_18_720MHz/8, hgdc_intf, mm1_upd7220_map) MACHINE_CONFIG_END