Jeff Jetton
@jeffjetton.bsky.social
He’s an accordionist and pianist. You might see him tweeting about bikes, old computers, and data science too.
That's a 12, and yes, it's gorgeous!
December 17, 2025 at 5:48 PM
That's a 12, and yes, it's gorgeous!
Nice! Reminds me a bit of The Hues Corporation's "Rock the Boat" for some reason.
December 17, 2025 at 2:41 PM
Nice! Reminds me a bit of The Hues Corporation's "Rock the Boat" for some reason.
That is stupid and also I'm stealing it.
December 13, 2025 at 8:56 PM
That is stupid and also I'm stealing it.
Nope. Well, not counting the PiDP-8 kit I bought and put together.
But I'm working on a 6502 homebrew that doesn't have enough keys for hex entry, so I wrote an octal monitor for it.
But I'm working on a 6502 homebrew that doesn't have enough keys for hex entry, so I wrote an octal monitor for it.
December 12, 2025 at 7:33 PM
Nope. Well, not counting the PiDP-8 kit I bought and put together.
But I'm working on a 6502 homebrew that doesn't have enough keys for hex entry, so I wrote an octal monitor for it.
But I'm working on a 6502 homebrew that doesn't have enough keys for hex entry, so I wrote an octal monitor for it.
Technically the sunrise isn't affected either way. It happens when it happens and doesn't care whether we call that moment 7:00 or 8:00 or "Gary".
DST is just everyone doing everything an hour earlier and tricking themselves that they're not by changing the clock. (Which is kinda dumb.)
DST is just everyone doing everything an hour earlier and tricking themselves that they're not by changing the clock. (Which is kinda dumb.)
December 9, 2025 at 3:46 PM
Technically the sunrise isn't affected either way. It happens when it happens and doesn't care whether we call that moment 7:00 or 8:00 or "Gary".
DST is just everyone doing everything an hour earlier and tricking themselves that they're not by changing the clock. (Which is kinda dumb.)
DST is just everyone doing everything an hour earlier and tricking themselves that they're not by changing the clock. (Which is kinda dumb.)
Just four times better.
It's in binary.
It's in binary.
November 26, 2025 at 7:11 PM
Just four times better.
It's in binary.
It's in binary.
Ooooh! Where'd you find a 6502 FOCAL?
November 26, 2025 at 3:38 PM
Ooooh! Where'd you find a 6502 FOCAL?
Yup! With a 12-bit word length and six-bit character encoding often being used, octal was a much better choice than hex. Plus the PDP-8 instruction set lent itself well to three-bit groupings.
November 26, 2025 at 3:32 PM
Yup! With a 12-bit word length and six-bit character encoding often being used, octal was a much better choice than hex. Plus the PDP-8 instruction set lent itself well to three-bit groupings.
You mean "reduced-price candy day"?
October 31, 2025 at 4:32 PM
You mean "reduced-price candy day"?
The girl looks like she's holding a cellphone.
October 28, 2025 at 4:41 PM
The girl looks like she's holding a cellphone.
Our generation's "The Ultimate Confrontation"?
October 12, 2025 at 10:43 PM
Our generation's "The Ultimate Confrontation"?
Imagine if you went to see a play in the theater, and every few minutes it just *stopped*. And you had to wait while the actors set up for the next few lines of dialog, and the director chatted with the lead about motivation, and commentators ad-libbed to the audience about how the scene was going.
October 12, 2025 at 3:20 PM
Imagine if you went to see a play in the theater, and every few minutes it just *stopped*. And you had to wait while the actors set up for the next few lines of dialog, and the director chatted with the lead about motivation, and commentators ad-libbed to the audience about how the scene was going.
It's on Archive.org of course. But it would be cool to have the dead-tree version!
archive.org/details/BBCM...
archive.org/details/BBCM...
BBC Micro Compendium : Jeremy Ruston : Free Download, Borrow, and Streaming : Internet Archive
Book with information on 6502 programming, on computer arithmetic, with two language implementations and a thoroughly annotated disassembly of Acorn's BBC...
archive.org
October 10, 2025 at 4:55 PM
It's on Archive.org of course. But it would be cool to have the dead-tree version!
archive.org/details/BBCM...
archive.org/details/BBCM...
Bayes City Rollers?
October 8, 2025 at 9:23 PM
Bayes City Rollers?
I thought EOR affects N and Z just like LDA?
September 25, 2025 at 8:44 PM
I thought EOR affects N and Z just like LDA?
Not strictly for 6502, and maybe obvious, but...
If the last thing your subroutine does before RTSing is JSR to another subroutine, you can replace the JSR with a JMP and omit the RTS, saving a byte and several cycles.
If the last thing your subroutine does before RTSing is JSR to another subroutine, you can replace the JSR with a JMP and omit the RTS, saving a byte and several cycles.
September 25, 2025 at 8:37 PM
Not strictly for 6502, and maybe obvious, but...
If the last thing your subroutine does before RTSing is JSR to another subroutine, you can replace the JSR with a JMP and omit the RTS, saving a byte and several cycles.
If the last thing your subroutine does before RTSing is JSR to another subroutine, you can replace the JSR with a JMP and omit the RTS, saving a byte and several cycles.
I once toyed with the idea of using indentation in 6502 assembly as Pythonesque way to branch without labels.
I started on a proof-of-concept preprocessor to read the weird code and turn it into standard assembly. Not sure why I abandoned it... might revisit it one of these days.
I started on a proof-of-concept preprocessor to read the weird code and turn it into standard assembly. Not sure why I abandoned it... might revisit it one of these days.
September 17, 2025 at 10:25 PM
I once toyed with the idea of using indentation in 6502 assembly as Pythonesque way to branch without labels.
I started on a proof-of-concept preprocessor to read the weird code and turn it into standard assembly. Not sure why I abandoned it... might revisit it one of these days.
I started on a proof-of-concept preprocessor to read the weird code and turn it into standard assembly. Not sure why I abandoned it... might revisit it one of these days.
That's a good point. Certainly by now, Spinal Tap has pulled a full Monkees and gone from manufactured to legitimate.
September 14, 2025 at 7:15 PM
That's a good point. Certainly by now, Spinal Tap has pulled a full Monkees and gone from manufactured to legitimate.
pihole uses it, doesn't it? In which case, I'm running it right now and it's great. :-)
September 14, 2025 at 7:09 PM
pihole uses it, doesn't it? In which case, I'm running it right now and it's great. :-)