Thinking About Formal Verification Versus Formal Specification

You would think formal specification would be the one people do first, otherwise how do you compare different instances of what is being verified?


See
Geoffrey M. Brown Indiana University Bloomington | IUB - ResearchGate https://www.researchgate.net/profile/Geoffrey-Brown-3

Bryce Himebaugh's research works | Indiana University Bloomington ... https://www.researchgate.net/scientific-contributions/Bryce-Himebaugh-82112856



See Ben Eater's 8-bit computer https://eater.net/8bit/kits

Watch at least the first minute of the first video in the playlist:


See also the bit on the clock circuit at 16:07.

Now see: Verified Compilation on a Verified Processor https://cakeml.org/pldi19.pdf

As an exercise (thought experiment) consider how you might verify an 8-bit assembler on a verified 8-bit breadboard computer. What would that tell you about what you have achieved? How much is that knowledge worth, in practical terms?



In Bolivia I also had free access to the ISO/IEC specifications.

Computing in Phase Space

See Links:

The 6502 Song

See video description:

The 8 Bit Girls: 

Parts of this video were filmed at @VCFMW 2023.

Lyrics:

There’s a joystick in my hand,
There’s Atari on the stand,
Put a cartridge in the slot,
‘cause we’re gonna play a lot,

Switching on my Famicom
Cause Nintendo is the bomb
Mario’s the one I love,
Slipping on a power glove

It’s an 8-bit world, and we’re 8-bit girls, it’s true, oh yeah
It’s an 8-bit world, and we’re 8-bit girls, it’s true, yeah

6502

Yeah we landed on the blocks, Space Invaders took some shots, then we ate up all the dots

6502

Frogger dodging all the cars, Breakout hitting all the bars, playing some Revenge of Yar

6502

Pole Position give me speed, Breaking up the Centipede, retrogames are what I need

6502

Yeah we’ve got the highest score, always say we want some more, more, whoa-oh

6502 microprocessor (x2)

Now I got this chip from MOS
Coding BASIC like a boss
This rf jack what’s it for?
Hooking up my Commodore

Software on a floppy disk
Apple II cannot be missed
Want to see an epic fail?
Dysentery on the Trail.

6502! (x 8)

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