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6502
 

offline EpicMegatrax from Greatest Hits on 2020-03-01 01:50 [#02596079]
Points: 23949 Status: Addict



look at it go


 

offline EpicMegatrax from Greatest Hits on 2020-03-01 01:51 [#02596081]
Points: 23949 Status: Addict



6502 far


 

offline EpicMegatrax from Greatest Hits on 2020-03-01 02:02 [#02596083]
Points: 23949 Status: Addict



plumbing


 

offline EpicMegatrax from Greatest Hits on 2020-03-01 02:03 [#02596084]
Points: 23949 Status: Addict



neuroscience fails to grok 6502 connectome


 

offline ijonspeches from 109P/Swift-Tuttle on 2020-03-01 08:52 [#02596096]
Points: 7624 Status: Lurker | Show recordbag



is this what it looks like inside Data´s mind?


 

offline EpicMegatrax from Greatest Hits on 2020-03-01 20:22 [#02596125]
Points: 23949 Status: Addict



the 6502 is only a bit over 3000 transistors, which blows my
mind. they did C64, VIC-20, Apple II, NES, with just 3000
transistors? modern CPUs have tens of millions

if you know a bit about CPU design it's fascinating being
able to see it all at once. then that visualization slows it
down so you can see it work all at once, too. you can see
the clock flickering at the top and the data/address pins on
the bottom left/right changing it up every 2 clock cycles.
sort of like some motion you might get with a modular

i think that's the PLA at the top, it's just a decoder --
static lookup table that essentially takes incoming signals
and routes them into what i assume is the ALU, which is the
more visually interesting thing just below. then the lower
half of the chip is the registers, the little bit of data
it's working with, both input and output. the prominent
horizontal/vertical lines in this area are the selection
lines turning on and off to select particular registers to
read or write

for a class many, many years ago, i had to design a small
RISC CPU in a circuit simulator. this is much more
satisfying, though, being able to see it all move at once.

6502 is like a single house compared to a whole city for a
modern CPU; no way to see it like this, really. so data's
brain wouldn't be as fun to look at, but i know what you
mean, they did use this sort of imagery for scans of his
"microcircuitry" or whatever


 

offline Hyperflake from Wirral (United Kingdom) on 2020-03-01 21:23 [#02596129]
Points: 30707 Status: Regular



thanks for the link, was looking at it last night, lead me
down a youtube rabbit hole,


 

offline DADONCK from here on 2020-03-01 21:32 [#02596130]
Points: 3417 Status: Regular



cute


 

offline EpicMegatrax from Greatest Hits on 2020-03-01 22:14 [#02596133]
Points: 23949 Status: Addict



doing SOE in C was one my first programming
lessons; dad walked me through it.


 

offline DADONCK from here on 2020-03-01 23:03 [#02596141]
Points: 3417 Status: Regular | Followup to EpicMegatrax: #02596133



that is very cool. my dad is not that smart. sometimes i
wish he would have taught me something. but he did let me
use his toolshop, which was pretty neat

computerwise i had a good friend. my first buddy. his father
build his own little computer. it was actually just a
calculator with a few digits. but my friend got me into
computers, early. we both had a c64 when we were like 6
years old

hes a programmer now. im not really what you would call a
programmer :)


 


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