42 lines
1 KiB
Rust
42 lines
1 KiB
Rust
use crate::processor::memory::Address;
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use std::str::from_utf8_unchecked;
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use self::mbcs::{MBC, MBC1, NONE};
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mod mbcs;
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pub struct ROM {
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title: String,
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mbc: Box<dyn MBC>,
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}
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impl ROM {
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pub fn load(data: Vec<u8>) -> Self {
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let mut title_length = 0x143;
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for i in 0x134..0x143 {
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title_length = i;
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if data[i] == 0x0 {
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break;
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}
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}
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let title = unsafe { from_utf8_unchecked(&data[0x134..title_length]).to_string() };
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let _gbc_flag = data[0x143];
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let _sgb_flag = data[0x146];
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let _rom_size = data[0x148];
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let _ram_size = data[0x149];
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let mbc: Box<dyn MBC> = match data[0x147] {
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0x00 => Box::new(NONE { data }),
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0x01 => Box::new(MBC1 { data }),
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_ => panic!("unimplemented mbc: {:#X}", data[0x147]),
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};
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Self { title, mbc }
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}
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pub fn get_title(&self) -> &String {
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&self.title
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}
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pub(super) fn get(&self, address: Address) -> u8 {
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self.mbc.get(address)
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}
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}
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