>>I have a MacII with a Daystar accelerator and it boots fine in color, and X
>>even runs without crashing, but the display is broken, shows up as 6 (I
>>think) small images in a row along the top of the screen. You can't read
>>them, but they react normally to inputs from the keyboard and mouse, that
>>is you can type, pull down menus and like that. This suggests (to me) that
>>color support might not be all that difficult.
>
>This is exactly the same symptom that MacPaint (1.5; yes there was more
>than one version. :) exhibits when you run it on a colour display. Mean
>anything to anyone?
>

Yeah, it's fairly clear what's happening.  The graphics drivers are
assuming that the screen memory is simply an array of 1-bit B&W values,
when in fact it is 8-bit.  Therefore, you see a garbled version of the
first line condensed to 1/8th of its normal size, then next to that the
second line...

Below the first line is then a shrunk version of the 7th (9th?) line, and
so on, until you have 6 (I would expect 8, actually) miniature screens.

Several early programs have exactly the same problems - all those which
drew direct to screen memory.  MacPaint 1.5, certainly.  Also, DUngeons of
Doom springs to mind ;)

No doubt none of this is surprising to those who wrote the graphics drivers
for X/dt.

Jules

>
>--
>
>Cheers.
>
>Tom Rowlands                                               (06) 292 6854
>tomr@oaf.apana.org.au                              A proud APANA member.
>........................Sorry, I can't sign this........................
>                  This signature is *not* random. (much)


/----------------+-------------------------------+---------------------\
|  Jelibean aka  | jules@mailbox.co.uk           |  6 Evelyn Road      |
|  Jules aka     |                               |  Richmond, Surrey   |
|  Julian Bean   |(jelibean@jmlbhome.demon.co.uk)|  TW9 2TF    *UK*    |
+----------------+-------------------------------+---------------------+
|  "Mother, I can never come home again, because I seem to have left   |
|  an important part of my brain somewhere, somewhere in a field in    |
|  Hampshire." - Pulp.                                                 |
\----------------------------------------------------------------------/