Published Aug 3rd, 2020, 8/3/20 6:25 pm
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After some time, I have finally gotten to this one. Created back in 2013 as a part of the PoweredCube project, it represented its main graphical output. A big screen with the access to individual pixels has the following characteristics:
We will use a table to better imagine how things work. It basically represents the monitor input port depicted in the last image:
Once reset signal is equal to 1, all pixels will turn off. If write signal is set to 1, it will write current data value to a pixel addressed by yaddr (Y coordinate) and xaddr (X coordinate) signals. Left bottom corner of the screen is equal to (0, 0).
Hope you all are doing well! ;-)
- 32x24 pixels (768 pixels in total)
- Clear the whole screen signal
- Simple control interface (read below)
We will use a table to better imagine how things work. It basically represents the monitor input port depicted in the last image:
| reset | data | yaddr[5] | xaddr[5] | write |
Once reset signal is equal to 1, all pixels will turn off. If write signal is set to 1, it will write current data value to a pixel addressed by yaddr (Y coordinate) and xaddr (X coordinate) signals. Left bottom corner of the screen is equal to (0, 0).
Hope you all are doing well! ;-)
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(Just asking because me and my friend just did it... so I guess that answers you're question... :)
Quite big, clean wiring (although personally I would prefer to have some color coding going on).
By the way, is the input of 'yaddr' and 'xaddr' in binary?
Ad yaddr, xaddr: yes, they are encoded in binary (5 bits each coordinate). Just out of curiosity; what alternatives come to your mind? :-)
+ one line per x-coordinate & one line per y-coordinate -> example 10x10 pixels means 10 x-coordinate lines and 10 y-coordinate lines. Only were they intersect you can write/input goes through.
- input mechanism of say 10 buttons, press one & the old one is flushed out
- up/down counter per coordinate
- hook them up to tripwires or pressureplates (= same amount of pixels).
Hope it makes some kind of sense. Or fly through the PMCview3D on my old submission
https://www.planetminecraft.com/project/paint-system/
(note1, if I recall it doesn't work due to some missing objects in the hoppers for the timer-clocks to work properly
note2, it only contain the latest version, I could try dig up the original save that shoudl work + has the older versions)
ps. as you might have noticed, I am bit rusty in the terms of all the gates and such. It has been some years I worked extensive with those.
The paint system looks interesting but right now I do not have much time to examine it more deeply. Furthermore, I am focused on processors now.
Nevertheless, I like that you did not use command blocks in the map. I personally do not like them since they are transforming hardware problem to a software problem while being seen as a hardware solution then (if you know what I mean). And that's a different level of abstraction.
and it uses X, Y cords... even bigger outch!!!
then clear function... now I'm stuned...
I mean the RAM needed for that is insaine!!!
I like it...
1+ DIAMOND
100% agree xD
> and it uses X, Y cords... even bigger outch!!!
How it should be done then? Just curious. Please note that it must be able to draw individual pixels (buffered/unbuffered don't mind).
> I mean the RAM needed for that is insaine!!!
RAM? If you mean the screen buffer, that's 768 bits = 96 bytes. It is not that much. :-)
Anyway, thank you man! :-)