Nybbles and MouseBytes: Ep3: Comparison Instructions

Let's talk about the 8502's comparison instructions! These little instructions are somewhat tricky at first glance, but once you get to using them, it's much simpler. Let's build a program that draws raster bars!
Help me cover my costs on Patreon: / nybblesandbytes
Follow along and fill in your gaps with these manuals:
Assembly in One Step by RTK: dwheeler.com/6502/oneelkruns/...
Matt Godbolt's Blog on 6502 internals: xania.org/201405/jsbeeb-getti...
My 6502 Instruction Reference: nybblesandbytes.net/6502
Skilldrick's Easy6502: skilldrick.github.io/easy6502
Indexes:
0:24 - CMP behavior description
1:08 - CMP chart and addressing modes
1:20 - CPX chart and addressing modes
1:38 - CPY chart and addressing modes
1:50 - Raster bar program description
2:17 - Raster bar program explanation
3:18 - Raster bar program execution
Don't have a 128 to play on? Use an emulator like the VICE x128 emulator here: vice-emu.sourceforge.net
The music used in the video were songs by Jeremy Blake, specifically Let's Go Home. They're available free on KZbin.

[@lasseodin]

June is back. And as always, she rules. Love it

[@drgusman]

It’s not only not being notified, it doesn’t even appears on the subscription feed...

[@justovision]

I have the bell clicked and didn't see this except for Discord.

[@NybblesandBytes]

Yeah, that's apparently because there is a minimum length before YT deems it a video to share...

[@PhotonicNoodle]

How come this shows up under my recommended videos but not under subscribed? I'm lucky I didn't miss it. Also in your description "Let's talk about the 8502's comparison". 8502? :p

[@NybblesandBytes]

8502 == 6502, for the most part. Only a pinout difference.

[@PhotonicNoodle]

@@NybblesandBytes totally thought it was a typo, I look like a jackass now, sorry!