paoda/zba
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

fix: reimpl debug reads w/out throwing away *const Self

Browse Source
This commit is contained in:
Rekai Nyangadzayi Musuka
2022-08-07 05:11:29 -05:00
parent 5a18b1dcc7
commit 739db99c83
6 changed files with 155 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
src/core/bus/GamePak.zig
View File

@@ -90,6 +90,33 @@ pub fn read(self: *Self, comptime T: type, address: u32) T {
};
}
pub fn dbgRead(self: *const Self, comptime T: type, address: u32) T {
const addr = address & 0x1FF_FFFF;
if (self.backup.kind == .Eeprom) {
if (self.isLarge()) {
// Addresses 0x1FF_FF00 to 0x1FF_FFFF are reserved from EEPROM accesses if
// * Backup type is EEPROM
// * Large ROM (Size is greater than 16MB)
if (addr > 0x1FF_FEFF)
return self.backup.eeprom.dbgRead();
} else {
// Addresses 0x0D00_0000 to 0x0DFF_FFFF are reserved for EEPROM accesses if
// * Backup type is EEPROM
// * Small ROM (less than 16MB)
if (@truncate(u8, address >> 24) == 0x0D)
return self.backup.eeprom.dbgRead();
}
}
return switch (T) {
u32 => (@as(T, self.get(addr + 3)) << 24) | (@as(T, self.get(addr + 2)) << 16) | (@as(T, self.get(addr + 1)) << 8) | (@as(T, self.get(addr))),
u16 => (@as(T, self.get(addr + 1)) << 8) | @as(T, self.get(addr)),
u8 => self.get(addr),
else => @compileError("GamePak: Unsupported read width"),
};
}
pub fn write(self: *Self, comptime T: type, word_count: u16, address: u32, value: T) void {
const addr = address & 0x1FF_FFFF;