Re: 1084 woes

[dempson@actrix.gen.nz (David Empson)]

Linards Ticmanis <ticmanis@coli.uni-sb.de> wrote:

> I tried to get the Commodore 1084 Monitor to work with a Apple II 
> eroplus with pal card... it works fine in pure text or pure graphics 
> mode... however in mixed text/graphics mode the colors are messed up. I
> wonder, does the 1084 maybe not support graphics lines and b/w lines in
> the same frame?

This is normal behaviour with any colour composite monitor on an Apple
II.

> The Apple does not produce a color burst in text mode, only in graphics
> mode. In mixed mode the graphics lines do have a color burst while the
> text lines don't.

In mixed mode, the Apple II _does_ generate colour burst for the text
lines.

There is at least one exception: on an Apple IIgs with an RGB monitor,
the VGC chip is able to switch to monochrome mode for the four lines of
text.  (It is actually fixed colour mode - on the IIgs, the user can set
the foreground and background colours in text mode, and the border
colour for all modes.)

With a composite monitor and the text colours set to white on black, the
IIgs behaves exactly the same as earlier models - you get green and
violet for the text characters.

-- 
David Empson
dempson@actrix.gen.nz