// license:GPL-2.0+ // copyright-holders:Wilbert Pol, Kevin Thacker /*************************************************************************** nc.c Functions to emulate the video hardware of the Amstrad PCW. ***************************************************************************/ #include "emu.h" #include "includes/nc.h" #include "machine/ram.h" /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ void nc_state::video_start() { } #if 0 /* two colours */ static const unsigned short nc_colour_table[NC_NUM_COLOURS] = { 0, 1,2,3 }; #endif /* black/white */ static const rgb_t nc_palette[NC_NUM_COLOURS] = { rgb_t(0x060, 0x060, 0x060), rgb_t(0x000, 0x000, 0x000), rgb_t(0x080, 0x0a0, 0x060), rgb_t(0x000, 0x000, 0x000) }; /* Initialise the palette */ PALETTE_INIT_MEMBER(nc_state, nc) { palette.set_pen_colors(0, nc_palette, ARRAY_LENGTH(nc_palette)); } void nc_state::nc200_video_set_backlight(int state) { m_nc200_backlight = state; } /*************************************************************************** Draw the game screen in the given bitmap_ind16. Do NOT call osd_update_display() from this function, it will be called by the main emulation engine. ***************************************************************************/ UINT32 nc_state::screen_update_nc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int y; int b; int x; int height, width; int pens[2]; if (m_type==NC_TYPE_200) { height = NC200_SCREEN_HEIGHT; width = NC200_SCREEN_WIDTH; if (m_nc200_backlight) { pens[0] = 2; pens[1] = 3; } else { pens[0] = 0; pens[1] = 1; } } else { height = NC_SCREEN_HEIGHT; width = NC_SCREEN_WIDTH; pens[0] = 2; pens[1] = 3; } for (y=0; ypointer()) + m_display_memory_start + (y<<6); x = 0; for (by=0; by>3; by++) { int px; unsigned char byte; byte = line_ptr[0]; px = x; for (b=0; b<8; b++) { bitmap.pix16(y, px) = pens[(byte>>7) & 0x01]; byte = byte<<1; px++; } x = px; line_ptr = line_ptr+1; } } return 0; }