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oam dma transfers

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This commit is contained in:
Alex Janka 2023-02-09 12:14:55 +11:00
parent ad8d001f0c
commit 3cd888d991
1 changed files with 13 additions and 0 deletions
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13
src/processor/memory.rs
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@ -6,6 +6,8 @@ use crate::{
use minifb::Key; use minifb::Key;
use std::io::{stdout, Write}; use std::io::{stdout, Write};
use super::SplitRegister;
pub(crate) mod rom; pub(crate) mod rom;
pub(crate) type Address = u16; pub(crate) type Address = u16;
@ -260,6 +262,17 @@ impl Memory {
// read-only addresses // read-only addresses
println!("BANNED write: {:#X} to {:#X}", data, address); println!("BANNED write: {:#X} to {:#X}", data, address);
} }
0xFF46 => {
if data > 0xDF {
panic!("dma transfer out of bounds: {:#X}", data);
}
let mut addr: u16 = 0x0;
addr.set_high(data);
for l in 0x0..0xA0 {
addr.set_low(l);
self.oam[l as usize] = self.get(addr);
}
}
_ => { _ => {
self.io[addr_l] = data; self.io[addr_l] = data;
// panic!("passed non-io address to io handler!"); // panic!("passed non-io address to io handler!");