Re: DGR...

[Steve Nickolas <usotsuki@buric.co>]

On Wed, 14 Nov 2012, BLuRry wrote:

> I found the rom firmware routines to be useful for general purpose but 
> they're mostly optimized for size and are somewhat a tradeoff of 
> speed/efficiency compared to a bulkier routine using a lookup table to 
> translate the y-coordinate to a memory offset.  So if you're trying to 
> do a really fast drawing routine (say, a full-screen plasma effect) 
> you'll have to roll your own or look @ other sources for examples to get 
> the most speed.

Well, using C already sacrifices speed and size, though not as severely as 
using BASIC.  The description of what I needed to do to do what I wanted 
made my head explode when trying to write it in asm from the beginning, so 
I started on a PC, writing for DOS, with the mindset that I wanted to get 
it onto the Apple as soon as possible after it was up and running on DOS.

OK, I'll open the bag.  A friend suggested I try to write a CHIP-8 
interpreter.  Its native resolution, 64x32, is better matched by DGR than 
any other video mode the Apple ][ series supports.

-uso.