novaBBS - comp.os.cpm - Re: Graphics, the hard way

Re: Graphics, the hard way

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https://www.novabbs.com/devel/article-flat.php?id=2699&group=comp.os.cpm#2699

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Date: Thu, 26 Aug 2021 07:25:17 -0700 (PDT)
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Subject: Re: Graphics, the hard way
From: fridtjof...@gmail.com (fridtjof.ma...@gmail.com)
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by: fridtjof.ma...@gmail - Thu, 26 Aug 2021 14:25 UTC

On Thursday, July 29, 2021 at 3:01:56 AM UTC-4, fridtjof.ma...@gmail.com wrote:
> There is a bit of a lull in my am9511 and apu projects.
>
> So, I was thinking about graphics. Old-school. UTF-8 has
> 2x2 sub-cell graphic characters. I used those, along with
> character set data from the 1974 Poptronics Scopewriter
> to make a program that displays HELLO, in 2x2 graphics
> using the Scopewriter font.
>
> Written in MBASIC. For fun. takes a minute or two on
> my Altair-Duino
>
> https://github.com/ratboy666/halfg

Added MWC (Mark Williams Company) translations to XYBASIC.
Included xycmpfp.com, the MWC XYBASIC interpreter with software
floating point to run the translations. xy1.bas is a direct translation, improved
in xy2.bas and xy3.bas. xy3.bas uses 1/4 (one fourth) of the data storage.
Speed can still be improved (by quite a bit) -- hint: (1) move DATA to below
the code. and (2) avoid string concatenation to build output lines are the
first two "easy and cheap" optimizations.

Fred

Oh, so there you are!

devel / comp.os.cpm / Re: Graphics, the hard way

Subject	Author
Re: Graphics, the hard way	fridtjof.ma...@gmail.com