On Thu, 30 Jan 1997, Adrian Fowler wrote:

.. So, _does_ the Quadra 610 (1MB VRAM 20MB RAM) support B/W XWindows as the
.. machine list suggests?  If so, any clues as to why mine does not (if, like I
.. suspect the kernel I am using doesn't support the grf0/1 devices then which
.. one will?)

As it has been reported earlier, the Quadra 610 (and similary machines) do
not configure the intvid (and consequently grf) device with current
sources. 

If you have access to build a kernel yourself from current sources, you
can apply the following imterim patch to enable the recognition of
intvid0/grf0 needed to run dt or X: 

diff -c -r1.1.1.2 machdep.c
*** machdep.c   1997/01/09 15:45:06     1.1.1.2
--- machdep.c   1997/01/14 22:11:58
***************
*** 2254,2259 ****
--- 2254,2260 ----
        {MACH_MACPB165C,        (caddr_t) 0xfc040000,   512 * 1024},
        {MACH_MACPB180C,        (caddr_t) 0xfc040000,   512 * 1024},
        {MACH_MACPB500,         (caddr_t) 0x60000000,   512 * 1024},
+       {MACH_MACQ610,          (caddr_t) 0xf9001000,   1024 * 1024},
        {0,                     (caddr_t) 0x0,          0},
  };                            /* End of intvid_info[] initialization. */

This patch applies to Quadra 610's with 1MB of VRAM (the 1024*1024 part).
I have not yet tried X (only dt), but I expect it to work.

regards
Erik Bertelsen