All Questions
13 questions
5votes
2answers
703views
Advice creating and saving a logo with Apple II HGR graphics (BASIC prog)
I'm working on a small project with a local association to revive and illustrate what can be done with an Apple II. They have both a II c and e models. With the low res GR mode, I use HLIN, VLIN and ...
- 59
11votes
2answers
895views
Information about the Hollywood Hardware Graphics Card for Apple II+
I still have a Hollywood Hardware graphics card that I used in my Apple II+ back-in-the-day. It was my understanding that this was the graphics card used for the special effects in the first three ...
- 111
4votes
1answer
324views
Apple IIc : displaying HGR page 1 in AUX memory
I need to display HGR page 1 ($2000 to $3FFF) located in AUX memory (not in MAIN memory). According to the "Apple IIc Reference Manual - Volume 1", page 45, I must first turn 80Store on by ...
- 193
9votes
1answer
1kviews
Why does the Applesoft BASIC have shapes?
Why did Apple include shapes in Applesoft BASIC? There are no sprites on the Apple II, but shapes provide a simple vector drawing tool. As graphics go the shapes are kind of an odd duck, they provide ...
- 2,512
6votes
3answers
2kviews
What were the alternative graphic cards for the Apple II?
In this question, it's mentioned the Apple II's slot 7 was used by third party graphics cards. Is there any documentation on those? What were those cards and what were their capabilities?
- 797
7votes
4answers
2kviews
How to use HGR2 (or HGR) on an Apple II
I am a big fan of the TV show lost, and I was trying to make the Dharma Initiative logo. But at certain point I couldn't add new lines of code and the final part of the logo was cut off. I tried to ...
5votes
0answers
189views
What would happen if the DHR jumper was enabled on a Rev A Apple //e?
The Apple //e originally did not support Double HiRes graphics (DHR). The engineers realized they could double their hires and lores X resolution shortly after the introduction of the machine, so the ...
- 18.5k
41votes
5answers
10kviews
What determines the color of every 8th pixel on the Apple II?
On the Apple II there's an interesting way to add a little color to the bitmap, since the high bit selects the palette used for the three-and-a-half pixels represented by the byte. Like this: 0: Black,...
- 40.3k
32votes
5answers
5kviews
Does every retrocomputer and console with NTSC composite output have 'artifact color' ability?
Artifact color is heavily associated with the Apple ][, since that is the only method the machine had to produce a color display. I was looking at the fantastic demo for IBM PC + CGA, 8088MPH, and I ...
- 61.7k
9votes
1answer
744views
How did the ITT 2020 graphics differ from the Apple ][?
Following on from this question about Apple ][ graphics: What makes slot 7 of the Apple ][ unique from 1-6 and how was this used? The original Apple ][ microcomputer was released for the US market ...
- 8,291
8votes
3answers
463views
Slideshow software for Apple II?
I'd like to do a presentation using my Apple //e as the video generator. Is there any good "slideshow" or presentation software for the Apple //e other than writing a BASIC program to draw on the HGR ...
- 283
14votes
1answer
2kviews
What was the change to the Apple //e motherboard that allowed for Double HiRes graphics?
Double Hi-Res graphics (DHGR) was a nice addition to the Apple ][ line as it allowed for higher resolution 560x192 graphics with 16 colors in comparison to the traditional 280x192 with 6 colors. It ...
- 18.5k
22votes
2answers
1kviews
How do I use shadowed memory to render Super Hi-Res quickly?
The Apple IIgs video memory is controlled by the 1MHz Mega II chip, so directly accessing the Super Hi-Res page in bank $E1 is slower than accessing other memory. How can I render in "fast" memory, ...
- 9,640
