Re: IIgs and Ultima4?

[a_specto@alcor.concordia.ca (Mitchell Spector)]

Justin Scott <djnospam@impakt.net> wrote:

>Mitchell Spector <a_specto@alcor.concordia.ca> wrote:
>> Justin Scott <djnospam@impakt.net> wrote:
>>>I didn't even think of Alternate Display, as I never could figure out if it
>>>actually did anything. :)
>> 
>>    Alternate Display Mode is only for shadowing of Text Page 2. In
>> otherwords unless your problem is a text screen filled entirely with 
>> "2"s then it will have no affect. Actually what it will do, if your on
>> a ROM 00 or 01, is severely slow down the machine.
>
>Did not know that.  Turns out the problem may have been related to the Display
>section of the control panel was set to monochrome (I'm on a mono display 
>until my slow-shipped monitor arrives.)  I hooked the unit up to the TV 
>today, and noticed nothing but white.  Turns out, it was in mono mode.  I'll 
>have to check out if that fixed ultima later.  No time now. :)

    Yep, setting the Control Panel Display option to 'Monochrome' turns
off all color information through composite output (it has no affect on

the RGB port though). 

    One interesting thing is, like the Apple III, it will display all
graphic modes in 16 greyscales. If you hook up an old style
display like the Monitor II, even High-Res graphics will show
up in greyscales (smooth and solid) instead of dot and line 
patterns as they do on an Apple II Plus, IIe, IIc and IIc+.

    Output from a Video Overlay Card creates an even sharper 
and smoother greyscale image. As a matter of fact, if you plug 
one in a IIe, it should give identical results as it duplicates the
IIgs's video and more (true NTSC signal and interlaced video).

Mitchell Spector
a_specto@alcor.concordia.ca