it seems to me that aux/vga uses shb/ehb (start/end horizontal blank) to
really mean shs/ehs (start/end horizontal sync)?
there are some vgadb entries that specify shs *smaller* than shb and the
edid parser does the following:
m->x = ha;
m->ht = ha+hb;
m->shs = ha; <- *WHAT*
m->shb = ha+hso; <- *WHAT*
m->ehb = ha+hso+hspw; <- *WHAT*
m->ehs = ha+hb; <- *WHAT*
where:
ha = horizontal active
hb = horizontal blanking
hso = horizontal sync pulse offset (relative to start of blank)
hspw = horisontal sync pulse width
the hardcoded vesa standard modes in vesadb.c seem to use the field
in the right way i think.
interestinly, shs and ehb are rarely given in vgadb and we default
to: shs = shb and ehs = ehb when omited, so this might explain why
stuff works at all.
so what is going on here?
--
cinap
