/*************************************************************************** video.c Functions to emulate the video hardware of the machine. ***************************************************************************/ #include "emu.h" #include "includes/spcforce.h" WRITE8_HANDLER( spcforce_flip_screen_w ) { flip_screen_set(space->machine(), ~data & 0x01); } SCREEN_UPDATE( spcforce ) { spcforce_state *state = screen->machine().driver_data(); int offs; int flip = flip_screen_get(screen->machine()); /* draw the characters as sprites because they could be overlapping */ bitmap_fill(bitmap,cliprect,0); for (offs = 0; offs < 0x400; offs++) { int code,sx,sy,col; sy = 8 * (offs / 32) - (state->m_scrollram[offs] & 0x0f); sx = 8 * (offs % 32) + ((state->m_scrollram[offs] >> 4) & 0x0f); code = state->m_videoram[offs] + ((state->m_colorram[offs] & 0x01) << 8); col = (~state->m_colorram[offs] >> 4) & 0x07; if (flip) { sx = 248 - sx; sy = 248 - sy; } drawgfx_transpen(bitmap,cliprect,screen->machine().gfx[0], code, col, flip, flip, sx, sy,0); } return 0; }