The Nineteenth Byte

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l4m2

02:43

Why AT89S52 claims frequency up to 33MHz, not try to reach 33.1776MHz?

8 hours later…

Themoonisacheese

10:33

@l4m2 the datasheet says the max clock is 33MHz, but it also says the min high and low times are 12ns each, which means that if your rising and falling edges are instant (or so fast they stop being relevant) you can reach 24ns per clock which brings you to 41.6MHz

Themoonisacheese

11:12

TIL that the joke about cisjordan "why haven't they made a transjordan" is wrong because transjordan was a thing before they renamed to simply jordan (good for him)

Simd

11:29

hello all

l4m2

@Themoonisacheese Don't that mean 12+99 and 99+12 both fine, but no promise about 12+12?

1 hour later…

Themoonisacheese

12:57

@l4m2 yes. realistically it will probably work (within some reasonable tolerance, i doubt 41.6 is achieveable real world), but the manufacturer only guarantees up to 33 million clocks per second, if you push beyond and it breaks then that's on you

Sandbox Posts

13:39

A: Sandbox for Proposed Challenges

Card-Jitsu Part 1: Find all winning sets of three cards code-golfcard-gamecombinatorics Card-Jitsu was a mini card-game based on Rock, Paper, Scissors available on the children-focused online game "Club Penguin". I first wrote a challenge where you needed to implement a clone of this game, but I ...

3 hours later…

l4m2

16:13

@Themoonisacheese 33.1776 is good for serial transmission as 33177600/12/9600/32=9. Some use 33 and rely on tolerant of transmission but it's not quite elegant

mousetail 'he-him'

CMQ Determine the chance that a one-time pad of the last 5 bits of two English words of the same length produces an valid English word.

Sandbox Posts

16:36

A: Sandbox for Proposed Challenges

The steps of sorting a stack of disks on three pegs You have a Tower of Hanoi-esque set of 3 pegs, labelled A, B, C. There is a stack of unsorted disks from 1 to n on peg A. The only move allowed is to move the top k disks from a peg to another peg. You may not take disks from the middle of the s...