Emulating a CPU in C++ #10 (6502) - Stack Operations

In this episode I implement all the 6502 stack operations TSX, TXS, PHA, PLA & PLP
Links:
Source for this project: github.com/davepoo/6502Emulator
Google Test: github.com/google/googletest
6502 Information: www.obelisk.me.uk/6502/
Timstamps
0:00 Recap & todo
0:50 Creating stack operations test Cpp
1:11 TSX tests
7:11 TSX Implementation
9:01 TXS tests
11:03 TXS Implementation
11:29 PHA tests
13:28 PHA Implementation
19:09 PHP tests
20:40 PHP Implementation
21:00 PLA tests
23:00 PLA Implementation
26:30 More PLA tests
28:59 PLP tests
30:30 PLP Implementation
31:00 Adding a few more tests
32:55 Closing comments

[@arkanjo7509]

thanks

[@van3ll0pe]

Nice project ! On other websites, I read that when the instruction BRK or PHP push the status register, the unused bit and the break flag is set to 1 on the stack. Who to believe ?

[@unclerojelio6320]

Just out of curiosity, why didn't you encapsulate the stack pointer and status byte into their own classes with their own get/set methods?

[@DavePoo]

Why would I encapsulate something just to unencapsulate them with get & set? It's an anti pattern.

[@Salsuero]

Why not create a defined variable that represents the bitset of a negative flag since you use it so often, that way it is obvious what it represents at a quick glance?

[@DavePoo]

I think i do that at some point later

[@M4RC90]

@@DavePoo Or just use cpu.Flag.N ?