Little bit of a confusing question. But Im really looking for learning some low level programming. Thing is, Dev boards like Arduino/Etc. really hide alot of whats going on. I have spent some time...

I'm trying to write a while loop in assembly with a 6502 processor and I cannot figure out how to write the hexadecimal code. I've seen examples written using the shorthand where there is a label f...

I'm starting out with 6502 Assembly right now and have a problem wrapping my head around loops that need to deal with numbers bigger than 8 bit. Specifically, I want to loop through some memory lo...

In the spare time I'm starting writing a very simple C++ emulator for the 6502 CPU. I used to write down a lot of assembly code for this CPU so all the opcodes, addressing modes and other stuff are...

I've run into a few issues while playing around with asm on an emulated C64 machine. What I want to do is to check if the key "N" on the keyboard is being pressed, then the program should wait fo...

I'm implementing virtual memory on dual cassette tape decks on a Commodore PET (for fun) for a Forth I'm writing. What I have so far is at http://github.com/chitselb/pettil if you're interested. I...

I know this is an incredibly vague question, and it might not be a good question for programmers, since this is really a hardware related thing, but I guess some assembly/machinecode comes in...

I'm emulating the 6502 processor, and I'm nearly finished (in the testing phase right now) and I'm using some NES test from the nesdev site, and it's telling me that both the interrupt flag and the...

I'm making a 6502 emulator and I'm stuck (or I think I am at least) already at the beginning (implementing the ADC operation). The problem is that I have to determine if there's a carry or an overf...

I'm looking for recommended virtual machines that can run on a 8-bit microprocessor AND support dynamic languages. I'd like a VM solution because I perceive benefits in terms of code density, porta...

In advance, I apologize for the open endedness, and general wishy-washiness of this question, because to be honest my knowledge of the topic is very patchy and I'm finding it hard to even describe ...

A few years ago, I implemented an NES game as a class project, written in 6502 assembly. I only ever ran it on an NES emulator, but I would like to see it run on the real hardware. Is there any dev...

Are there any good open source frameworks for developing computer system emulators? I am particularly interested in something written in Python or Java that can reduce the effort involved in develo...