Fixes for EGA scrolling

2024-01-09 17:20:31 +13:00
parent 9df44e60b5
commit 22ead81b80
2 changed files with 25 additions and 34 deletions
--- a/src/video/vid_ega_render.c
+++ b/src/video/vid_ega_render.c
@@ -126,6 +126,14 @@ ega_render_text(ega_t *ega)
        const bool blinked       = ega->blink & 0x10;
        uint32_t  *p             = &buffer32->line[ega->displine + ega->y_add][ega->x_add];

+        /* Compensate for 8dot scroll */
+        if (!seq9dot) {
+            for (int x = 0; x < dotwidth; x++) {
+                p[x] = ega->overscan_color;
+            }
+            p += dotwidth;
+        }
+
        for (int x = 0; x < (ega->hdisp + ega->scrollcache); x += charwidth) {
            uint32_t addr = ega->remap_func(ega, ega->ma) & ega->vrammask;