ahh i had the old coco1 the trs-80. which we lovingly called a trash-80. it had a whole 8 colours! only 4 of which you can use at the same time. but you couldnt use any 4, nooooo, that would be too easy. you could only use either red, green, yellow and blue. or buff, cyan, magenta and orange. i think you could use black and white as well in "hi res"..memories!
I have no idea! Some of my videos are okay, others are now squished like this. I can't find any settings or other way to convince YouTube not to squish it.
I remember this demo. I used to have it. I need to hit my parents up and see if they kept my old CoCo's I, II, III. Wasn't there a spoof of this called B'Joink or something?
Pile up a bunch of 8 bitters, connect them to a simple bus network through whatever I/O present, write some FP/IEEE754 routines, write a simple raytracer, and create an 8 bit render cluster.
I browsed your CoCo 3 web page and saw you had a bunch of CoCos but no good projects in mind. I had the idea to rummage garage sales and what not for old 8's, in addition to the ones I have, to do this, but have never gotten around to do it. Would make an awesome project.
Very nice! Similar to the C64 and Amiga tricks. I had a CoCo 1 back in the 80's, but I had no idea it had successors. A lot of fun to program these old computers and meddling directly with the hardware. This is why we have 80's computer enthusiasts, something the sterile feeling of programming layer on top of layer of abstraction in Windows will never produce. With the advent of the more powerful IBM PCs in the beginning of the 90's, this sort of computing would never happen again.
The CoCo has a 1.79Mhz 6809 - no graphics acceleration but it has an interrupt controller and you can fiddle with the video registers on-the-fly to achieve effects.
In this demo there isn't actually anything being drawn at all - it's all tricks. There is one 16 color graphics plane. The static background is created with palette remapping and the bottom part is only one line below the ball but that line is repeated so as to match the position of the ball.
as Atari ST programmer I'm quite interested about the specs of the CoCo, tha usual tricks used and the more special tricks too. So I guess there's color cycling going on for the ball. And you reset the colors and screen adress for the bottom text. And background? Is that the typical ST thingie with raster synchron background color switching?
I loved making "screen-saver " looking stuff written in basic on the coco3. Those were the days. A=A+x LOL
CrazyJesseful 7 months ago
Is this one of these tricks you simply cannot emulate? With the currently available emulators anyway...
Petrander 1 year ago
this is gobsmackingly delightful and even more so considering the hardware!! Truely a great piece of code!!
A1260T 2 years ago
This demo is incredibly smooth when running on a real CoCo 3. Outstanding job, Sock Master!
I just tried posting a video response of a realtime scaling demo I did.
remtube 2 years ago
ahh i had the old coco1 the trs-80. which we lovingly called a trash-80. it had a whole 8 colours! only 4 of which you can use at the same time. but you couldnt use any 4, nooooo, that would be too easy. you could only use either red, green, yellow and blue. or buff, cyan, magenta and orange. i think you could use black and white as well in "hi res"..memories!
owlfood 2 years ago
What happened? It looks squished now. I think when YouTube went to a widescreen type box it squished it somehow.
navydave1 3 years ago
I have no idea! Some of my videos are okay, others are now squished like this. I can't find any settings or other way to convince YouTube not to squish it.
sockypoo 3 years ago
Hmm, wonder if you re-submit the video it would fix it. But then you would probably loose all the comments.
navydave1 3 years ago
I remember this demo. I used to have it. I need to hit my parents up and see if they kept my old CoCo's I, II, III. Wasn't there a spoof of this called B'Joink or something?
ShamW0W 3 years ago
Btw here's a fun 8 bit project:
Pile up a bunch of 8 bitters, connect them to a simple bus network through whatever I/O present, write some FP/IEEE754 routines, write a simple raytracer, and create an 8 bit render cluster.
I browsed your CoCo 3 web page and saw you had a bunch of CoCos but no good projects in mind. I had the idea to rummage garage sales and what not for old 8's, in addition to the ones I have, to do this, but have never gotten around to do it. Would make an awesome project.
RJLeffmann 3 years ago
Very nice! Similar to the C64 and Amiga tricks. I had a CoCo 1 back in the 80's, but I had no idea it had successors. A lot of fun to program these old computers and meddling directly with the hardware. This is why we have 80's computer enthusiasts, something the sterile feeling of programming layer on top of layer of abstraction in Windows will never produce. With the advent of the more powerful IBM PCs in the beginning of the 90's, this sort of computing would never happen again.
RJLeffmann 3 years ago
IBM PC won because the Commodore crashed not because it was "more powrful".
The Commodore Amiga was the powerhouse.
m1omg 3 years ago
The CoCo has a 1.79Mhz 6809 - no graphics acceleration but it has an interrupt controller and you can fiddle with the video registers on-the-fly to achieve effects.
In this demo there isn't actually anything being drawn at all - it's all tricks. There is one 16 color graphics plane. The static background is created with palette remapping and the bottom part is only one line below the ball but that line is repeated so as to match the position of the ball.
sockypoo 4 years ago
as Atari ST programmer I'm quite interested about the specs of the CoCo, tha usual tricks used and the more special tricks too. So I guess there's color cycling going on for the ball. And you reset the colors and screen adress for the bottom text. And background? Is that the typical ST thingie with raster synchron background color switching?
Gunstick 4 years ago
this looks really impressive, especially considering the modest specs of the coco 3
storerestore 4 years ago
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b1keru 4 years ago