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Fraktured Faebles

archive.org/details/Fraktu…

Passport log: archive.org/download/Frakt…

Video: archive.org/details/A2Vide…

Thanks to @A2_Canada for the disk! title screenshot from flux visualization of
Funny story about this game: it basically doesn't exist. The company was pivoting away from the Apple ][ right as it was going to production. The number of copies sold rounds to zero.
A classic crack exists and appears complete (modulo the defaced title screen). This crack uses side B of the classic crack, which does not appear to be defaced. (It contains compressed graphics, non-trivial to change without proper tooling.)
.@A2_Canada got a protected copy from the owner of the company, but side B was blank (hence why we need to reuse the classic crack's side B).

But wait, there's more.
.@A2_Canada ALSO imaged an unprotected copy of what appears to be a prototype of this game, but called "Wacky Faerie Tales" instead. It appears to be feature-complete, but its side B is not recognized as a valid graphics disk by the retail version (and vice versa). title screenshot from loading screenshot from gameplay screenshot from
I've also uploaded "Wacky Faerie Tales" disk images to Asimov. They will be available for download shortly.
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4am
@a2_4am
Shortly after the release of Total Replay v2, @a2_qkumba and I embarked on a month-long refactoring binge, which eventually (d)evolved into the most ridiculous game of 6502 code golf you've ever seen.

1/
My first major refactor was to create the global variable gGameToLaunch and keep it updated. Previously, pressing RETURN would invoke a context-specific routine that figured out which game was showing on the screen, then launch it.
This commit <github.com/a2-4am/4cade/c…> creates gGameToLaunch and modifies routines throughout Total Replay to keep it up to date. Whenever we load a new screenshot — whether in search mode or browse mode or attract mode — we update that single variable.
Read 19 tweets
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4am
@a2_4am
Some notes on Buck Rogers:

First off, sectors on tracks are normally delimited by "sync fields" of nibbles that allow the disk controller code to get in phase with the nibbles, no matter where it starts. (It can't tell where it is within a track when it seeks to it.)

1/
"Sync" nibbles are usually eight "1" bits (0xFF) followed two "0" bits. Because reasons (read "Beneath Apple DOS"), this allows 6502 disk reading code to get back in sync quickly if it happened to start reading data in the middle of a byte, which happens most of the time.
Furthermore, the Disk ][ has a hardware limitation that limits the stable representation of data on disk: it can only reliably read two "0" bits in a row. This is why sector data can't just be stored as-is on disk; there has to be an intermediate format (6-and-2 encoded nibbles).
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4am
@a2_4am
Story time.

In 1981, @jmechner tried and failed to publish an Asteroids clone for the Apple II. It looked like this: title screenshot from gameplay screenshot from
38 years later (so, this year), @a2_qkumba ported it to ProDOS and we included it in "Total Replay," our pack of 200+ Apple II games <archive.org/details/TotalR…>. Our version looked like this. gameplay screenshot of
Shortly thereafter, someone reported a bug against Total Replay that Asteroid Blaster had corrupted graphics. This is ironic since Jordan had gone to great lengths to ensure that the asteroids looked exactly like the original, and this is why the game was ultimately canceled.
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