Our Etudes - I moved away from the Spectrum a long time ago and all my articles are rather theoretical in nature.

┌──┬───┬────┬──┬─┐■N■a■Sh■i■·■e■T■yu■D■y■
│ │││ │├─┐│ │ ││└┴─┐ We have accumulated quite a lot
│ └┴┤ ├┤ ││ │ └┴┬─┐│ small notes, thoughts and more
│ ──┤ ││ ││ │ ──┤ ││ similar material, in size
└───┴─┴──┴──┴───┴──┘ not worthy of a separate article.
So we decided to bring all this garbage together and
call it "Etudes".

---[FeRGuS]----------------------------------------------------------------
I moved away from the Spectrum a long time ago and all my articles are rather
theoretical in nature. I still hold out hope that
would anyone be interested...

One more sketch. It is necessary to exchange the values ​​of two variables.

Solution 1. c=a:a=b:b=c. Here we use additional
                        variable. Flaw?

Solution 2. a=a+b:b=a-b:a=a-b. Graceful and elegant.

Solution 3. push hl,de:pop de,hl Let's move away from languages
                                high level?

Solution 4. xchg eax,ebx solution for 80386 and higher.

Solution 5. xor ax,bx:xor bx,ax:xor ax,bx is an interesting option
                                         2 solutions for 
                                         Intel processors.

That's all for me. As they say, sapienti sat, procul esti,
profani;)

---[MiTaLeKa]------------------------------------------------
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---[A.Barker]------------------------------------------------
For those who don't know: Silica gel is a substance that
absorbs excess moisture.
I once went to a friend’s house, and he had a bag of some kind of
Chinese packaging, with the inscription:
"Silika Gel. DO NOT EAT!"
I immediately remembered: “The first commandment of Chukchi boys:
Don't eat yellow snow. Never eat yellow snow!
---[goBLin]----------------------------------------------------------------
During the heyday of the Zombusters Crew, I suggested quitecrazy idea for a toy: imagine ordinary Tetris,
in which several figures fall simultaneously... Now I
only one thing is interesting: how convenient it is to play such a game
pervert...
---[MiTaLeKa]------------------------------------------------
Yesterday I listened to radio "Mayak": Terrorists threw a grenade in Minsk
to the territory of the Russian embassy.
After lunch, Radio Rossiya: Two unknown people in Minsk at night
threw two explosive packages onto the territory... etc.

Honestly, today I was expecting a message like: Small crowd
Minsk residents greeted the arrival of the Russian President with fireworks!;)