diff options
Diffstat (limited to 'com32/lib/sys/vesa/initvesa.c')
| -rw-r--r-- | com32/lib/sys/vesa/initvesa.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/com32/lib/sys/vesa/initvesa.c b/com32/lib/sys/vesa/initvesa.c index 98888d32..0ad882b0 100644 --- a/com32/lib/sys/vesa/initvesa.c +++ b/com32/lib/sys/vesa/initvesa.c @@ -75,13 +75,14 @@ static int vesacon_paged_mode_ok(const struct vesa_mode_info *mi) { int i; + if (!is_power_of_2(mi->win_size) || + !is_power_of_2(mi->win_grain) || + mi->win_grain > mi->win_size) + return 0; /* Impossible... */ + for (i = 0; i < 2; i++) { - if ((mi->win_attr[i] & 0x05) == 0x05 && - mi->win_seg[i] && - is_power_of_2(mi->win_size) && - is_power_of_2(mi->win_grain) && - mi->win_grain <= mi->win_size) - return 1; /* We can deal with this... */ + if ((mi->win_attr[i] & 0x05) == 0x05 && mi->win_seg[i]) + return 1; /* Usable window */ } return 0; /* Nope... */ @@ -121,7 +122,8 @@ static int vesacon_set_mode(void) /* Copy general info */ memcpy(&__vesa_info.gi, gi, sizeof *gi); - /* Search for a 640x480 32-bit linear frame buffer mode */ + /* Search for a 640x480 mode with a suitable color and memory model... */ + mode_ptr = GET_PTR(gi->video_mode_ptr); bestmode = 0; bestpxf = PXF_NONE; |