ttlworks wrote:
Pictures on youtube look nice, could you please elaborate that rotozoom a bit more in detail ?
I will, but need to check that I'm remembering how to feed the various parameters to it correctly,
then I'll post code and an explanation of how it works.
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That's a nice collection of projects at fpga4fun.com, I like that Ethernet project.
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I wholeheartedly agree on the IDE software bloat, that is also proprietary and somewhat glitchy.
Or to put it this way: after replacing the light bulbs in the headlights of a state_of_the_art BMW,
you probably are going to appreciate/like cars with tail fins...
Or perhaps develop a lack of appreciation toward high price replacement parts
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I've played with TTL designs in the past and still might use it for small things or in certain areas, but really,
it's probably more about available time (and sometimes laziness) that led me down the FPGA path.
I had tinkered with chips like 6845, EF9367, EF9345, HD63484 etc. in the past, but at some point they all went out of production.
Did build a monochrome video display with two Lattice ispLSI1016 and a RAM back in 1998...
but at some point the ispLSI1016 went out of production and was replaced by the ispLSI1016E.
The old IDE wasn't able to generate binaries for the new ispLSI1016E, and the new IDE refused to open the old project files.
Tried to generate monochrome video signals with 8031 and PIC16C65 too, but back in 2000, microcontrollers were a bit too slow for this.
I just checked an old box of parts and found 4 x 6845's, a TMS4500A and a bunch of other goodies that I desoldered from boards 30 years ago.
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My point is: if I would have built a TTL based display controller from the start,
I wouldn't have been caught into constantly re_inventing the wheel for non_technical reasons...
and by now, we probably would have a graphical TTL workstation or such.
Anyhow, unfortunately availability and quality of TTL chips became a topic, too.
And that's what had brought me into tinkering a little bit with transistors at some point.
All in the name of progress they say. Gone are the days where you could go to your local electronics store an find all the TTL chips you needed.
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The obligatory Commodore keyboard in use I see. I also see that I'm not the only one who's been know to use spools of wire as spacers.
Is that a standard BUS on the green backplane board, I'm sure I've seen it in a few systems.
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Now I'm off to feed some Lizards.
Hmm... how big are those Lizards ?
Ranging from Bynoe's geckos (Heteronotia binoei) at about 2 inches to land mullets(bellatorias major) at around 2 feet.
And many, many in between. The mentioned geckos are interesting, a species of all female individuals, with triple helix DNA, that clone themselves to reproduce.
Still have some mouths feed, and some to feed again, so there may be delays but I will get to your next two posts soon.