Emulating a CPU in C++ #13 (6502) - BIT Instruction

In this episode I test and implement the 6502 instruction BIT, which can test specific bits of a value in memory.
Links:
Source for this project: github.com/davepoo/6502Emulator
Google Test: github.com/google/googletest
6502 Information: www.obelisk.me.uk/6502/
Timestamps:
0:00 Recap
0:20 BIT Description
0:50 BIT Unit tests
9:20 BIT Zero Page Implementation
17:30 BIT Absolute Implementation
18:56 Tidy up
21:06 Closing comments

[@m1geo]

In theory, theory and practice are idential. In practice, they are not.

[@twobob]

Pulling my hair out shouting at the screen "THE CYCLE TESTS ARE WRONG" hhahaha

[@DavePoo]

As i said in the video "oops"

[@twobob]

@@DavePoo Made me LOL, to be fair we all stand way too close to our own work as we write it - it's easy to judge, which is why we pair program in the first place ;) enjoying the series.

[@twobob]

@@DavePoo oh Dave, I see you don't have any community content. as a fellow programmer you may find this observation interesting. kzbin.info/www/bejne/e5uTfJygmZmSarM be well.

[@mynarco_yoyo]

Nice!

[@arkanjo7509]

thanks

[@M4RC90]

I was wondering how a simple AND operation could cause an overflow, but the overflow bit is just defined to be bit 6 of the value from memory. It's not really an overflow in that case.

[@DavePoo]

Yeah, not sure why that it is, but it is.

[@Gergus]

You sound a bit like Jon Richardson

[@DavePoo]

I had to Google who that was