diff options
Diffstat (limited to 'vgasrc/stdvga.c')
| -rw-r--r-- | vgasrc/stdvga.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/vgasrc/stdvga.c b/vgasrc/stdvga.c index a5972baa..4bfa101a 100644 --- a/vgasrc/stdvga.c +++ b/vgasrc/stdvga.c @@ -275,15 +275,15 @@ stdvga_set_character_height(u8 lines) stdvga_crtc_mask(stdvga_get_crtc(), 0x09, 0x1f, lines - 1); } -// Get vertical display end +// Get vertical screen size (number of horizontal lines in the display) u16 -stdvga_get_vde(void) +stdvga_get_vertical_size(void) { u16 crtc_addr = stdvga_get_crtc(); u16 vde = stdvga_crtc_read(crtc_addr, 0x12); u8 ovl = stdvga_crtc_read(crtc_addr, 0x07); - vde += (((ovl & 0x02) << 7) + ((ovl & 0x40) << 3) + 1); - return vde; + vde += ((ovl & 0x02) << 7) + ((ovl & 0x40) << 3); + return vde + 1; } // Get offset into framebuffer accessible from real-mode 64K segment |