the only thing from that list I did was do some Angular.JS lessons.

Phoenix Comicon time starting today.

But first, I'll take advantage of having the morning off, and wash my sheets and record that video of the BASIC interpreter so I can edit it and put it on YouTube.

haven't worked on BASIC for a week

because the filesystem is next

Latest version actually allows you to type quotes and parentheses... and color codes, even on the Web emulator.

You can even type Ctrl-9 to get reverse text that doesn't blink, and Ctrl-N to go into lowercase mode.

Star Trek kinda works. remember to press CTRL to unlock the keyboard first. you can type LOAD with or without a filename.

There are three demos: Eliza, Star Trek, and 10 PRINT.

It's starting to look as though that bug with subtraction has to do with the emulator I'm using; it doesn't implement the carry bit correctly on subtracts.

so I fixed the INT() problem but now the bit in Star Trek that should say "30 YEARS" now says "29.99999991 YEARS". not sure what happened there.

So there are actually two problems, not just one, with the math.

For one, those gigantic numbers I've been seeing happen every time you INT a negative number.

Also, some subtractions come out derped. Particularly, if the number you're subtracting uses all 32 bits of the mantissa, the answer will be off by some power of two, in the negative ( Read more... )

No, wait... the fast inverse square root does 1 / SQR(X), while what I need is SQR(2) / X.

there's probably some algebraic principle I can exploit to turn one problem into the other, but i've already sprained my brain on it..

Some mysterious calculation is resulting in the number -1.61061279E+09, probably a subtraction ( Read more... )