On Sat, 18 Apr 1998, Kenneth Lind wrote:

: >> ioctl VIOCGSIZE: Can't obtain memory      (or something like that.
: >...
: 
: >  This error could be due to trying to use a display mode that doesn't
: >support more than 4 bit planes.  Only the dbl-ntsc, dbl-PAL, and Super72
: >modes will support 8 bit planes, and they normally need to be explicitly
: >enabled with the "-A" option to loadbsd or the bootblock loader.

This isn't quite the right explanation.  It's not DblNTSC or DblPAL, but
rather the enabling of AGA that is required.  (ECS videomodes include
DblNTSC and DblPAL, but only up to 4 colors.)

Try enabling AGA modes with a loadbsd -A option.  I don't know if the server
will try to switch into Dbl{PAL,NTSC} automatically (if it does, it is
horribly broken and should give you a way to pick).  Normal NTSC and PAL
videomodes _do_ support 8 bitplanes on the AGA chips.

-- 
-- Todd Vierling (Personal tv@pobox.com; Bus. todd_vierling@xn.xerox.com)