12 lines
387 B
Rust
12 lines
387 B
Rust
use crate::errors::RunError;
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pub fn jnz(memory: &mut Vec<u16>, labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: &u16) {
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if labels[*data as usize].is_none() {
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eprintln!("{}", RunError::UnknownLabel(*data));
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std::process::exit(2);
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}
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if memory.pop() != Some(0) {
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*program_counter = (labels[*data as usize].unwrap() - 1) as u16;
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}
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} |