Implemented VGA colour plane mask, 640x200x2 (eg Windows 2.x startup screen) now displayed correctly.

2013-12-07 14:02:03 +00:00 · 2013-12-07 14:02:03 +00:00 · 273639bd79
commit 273639bd79
parent c6227d1fc6
3 changed files with 24 additions and 16 deletions
--- a/src/vid_svga.c
+++ b/src/vid_svga.c
@ -44,6 +44,12 @@ void svga_out(uint16_t addr, uint8_t val, void *p)
                        }
                        if (svga->attraddr == 0x10) 
                                svga_recalctimings(svga);
+                        if (svga->attraddr == 0x12)
+                        {
+                                if ((val & 0xf) != svga->plane_mask)
+                                        svga->fullchange = changeframecount;
+                                svga->plane_mask = val & 0xf;
+                        }
                }
                svga->attrff ^= 1;
                break;