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Re: Switch Color To Monochrome Switch?
- Subject: Re: Switch Color To Monochrome Switch?
- From: "David Wilson" <mcs6502@gmail.com>
- Date: 17 May 2006 07:13:17 -0700
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Bryan Parkoff wrote:
> The Apple IIgs' Control Panel has the feature to switch from Color to
> Monochrome for DHGR. Do it have in $C0XX as softswitches? I can't find in
> the manual. Do you know? I do not have to go through Control Panel.
$c021 bit 7 is the color/mono select (bits 6..0 are reserved)
According to page 83 of the IIgs Hardware Reference it is a write only
bit - you cannot determine the current state :-(
$c029 bit 5 selects between mono and color Double HiRES.
I seem to recall that the Control Panel affects both these registers.