// license:BSD-3-Clause // copyright-holders:Paul Daniels /********************************************************************** p2000m.c Functions to emulate video hardware of the p2000m **********************************************************************/ #include "emu.h" #include "includes/p2000t.h" void p2000m_state::video_start() { m_frame_count = 0; } uint32_t p2000m_state::screen_update_p2000m(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { uint8_t *videoram = m_videoram; int offs, sx, sy, code, loop; for (offs = 0; offs < 80 * 24; offs++) { sy = (offs / 80) * 20; sx = (offs % 80) * 12; if ((m_frame_count > 25) && (videoram[offs + 2048] & 0x40)) code = 32; else { code = videoram[offs]; if ((videoram[offs + 2048] & 0x01) && (code & 0x20)) { code += (code & 0x40) ? 64 : 96; } else { code &= 0x7f; } if (code < 32) code = 32; } m_gfxdecode->gfx(0)->zoom_opaque(bitmap,cliprect, code, videoram[offs + 2048] & 0x08 ? 0 : 1, 0, 0, sx, sy, 0x20000, 0x20000); if (videoram[offs] & 0x80) { for (loop = 0; loop < 12; loop++) { bitmap.pix16(sy + 18, sx + loop) = 0; /* cursor */ bitmap.pix16(sy + 19, sx + loop) = 0; /* cursor */ } } } return 0; }