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feat: implement mirroring for IWRAM EWRAM, OAM and PALRAM

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Also realized I confused IWRAM and EWRAM. This is also fixed
TODO: Implemnt Mirroring for VRRAM
This commit is contained in:
Rekai Nyangadzayi Musuka
2022-02-19 10:08:31 -05:00
parent e426f2459e
commit 9e2e8c3d1a
3 changed files with 32 additions and 32 deletions
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10
src/bus/Iwram.zig
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@@ -7,7 +7,7 @@ buf: []u8,
alloc: Allocator,
pub fn init(alloc: Allocator) !Self {
const buf = try alloc.alloc(u8, 0x40000);
const buf = try alloc.alloc(u8, 0x8000);
std.mem.set(u8, buf, 0);
return Self{
@@ -21,12 +21,14 @@ pub fn deinit(self: Self) void {
}
pub fn get32(self: *const Self, idx: usize) u32 {
return (@as(u32, self.get16(idx + 2)) << 16) | @as(u32, self.get16(idx));
return (@as(u32, self.buf[idx + 3]) << 24) | (@as(u32, self.buf[idx + 2]) << 16) | (@as(u32, self.buf[idx + 1]) << 8) | (@as(u32, self.buf[idx]));
}
pub fn set32(self: *Self, idx: usize, word: u32) void {
self.set16(idx + 2, @truncate(u16, word >> 16));
self.set16(idx, @truncate(u16, word));
self.buf[idx + 3] = @truncate(u8, word >> 24);
self.buf[idx + 2] = @truncate(u8, word >> 16);
self.buf[idx + 1] = @truncate(u8, word >> 8);
self.buf[idx] = @truncate(u8, word);
}
pub fn get16(self: *const Self, idx: usize) u16 {