Submitted by
glb_gtz on October 31, 2005 - 4:01pm
I have sucessfully emulated the Apple IIE text mode and I have coded the GR and HGR. This was the easy part. I am pretty sure Woz did not design the DHGR mode. I believe the Devil had a big hand in it's development. What I wanted to do was add a monochrome mode where I could get 560x192 mode to emulate a monochrome monitor. I also wanted close to the true individual dot color. On the Apple IIE emulator, when you write a 85 into location 8192, it displays differently depending on which monitor you setup. On a monochrome monitor, it appears as 4 monochrome dots. But on a color monitor, it appers as a solid gray line. This conforms to the way it is displayed on a composite monitor. Also, it conforms to Tech Note #3. But this tech note was written before high resolution VGA monitors were on everyones desk.