chore: rewrite read/write methods for remainig Bus devices
This commit is contained in:
parent
5310c12669
commit
aac01b0bfe
72
src/Bus.zig
72
src/Bus.zig
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@ -54,20 +54,20 @@ pub fn deinit(self: Self) void {
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pub fn read32(self: *const Self, addr: u32) u32 {
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return switch (addr) {
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// General Internal Memory
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0x0000_0000...0x0000_3FFF => self.bios.get32(addr),
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0x0200_0000...0x02FF_FFFF => self.ewram.get32(addr & 0x3FFFF),
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0x0300_0000...0x03FF_FFFF => self.iwram.get32(addr & 0x7FFF),
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0x0000_0000...0x0000_3FFF => self.bios.read(u32, addr),
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0x0200_0000...0x02FF_FFFF => self.ewram.read(u32, addr),
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0x0300_0000...0x03FF_FFFF => self.iwram.read(u32, addr),
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0x0400_0000...0x0400_03FE => io.read32(self, addr),
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// Internal Display Memory
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.get32(addr & 0x3FF),
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.read(u32, addr),
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0x0600_0000...0x06FF_FFFF => self.ppu.vram.read(u32, addr),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.get32(addr & 0x3FF),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.read(u32, addr),
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// External Memory (Game Pak)
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0x0800_0000...0x09FF_FFFF => self.pak.get32(addr - 0x0800_0000),
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0x0A00_0000...0x0BFF_FFFF => self.pak.get32(addr - 0x0A00_0000),
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0x0C00_0000...0x0DFF_FFFF => self.pak.get32(addr - 0x0C00_0000),
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0x0800_0000...0x09FF_FFFF => self.pak.read(u32, addr),
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0x0A00_0000...0x0BFF_FFFF => self.pak.read(u32, addr),
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0x0C00_0000...0x0DFF_FFFF => self.pak.read(u32, addr),
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else => undRead("Tried to read from 0x{X:0>8}", .{addr}),
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};
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@ -78,14 +78,14 @@ pub fn write32(self: *Self, addr: u32, word: u32) void {
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switch (addr) {
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// General Internal Memory
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0x0200_0000...0x02FF_FFFF => self.ewram.set32(addr & 0x3FFFF, word),
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0x0300_0000...0x03FF_FFFF => self.iwram.set32(addr & 0x7FFF, word),
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0x0200_0000...0x02FF_FFFF => self.ewram.write(u32, addr, word),
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0x0300_0000...0x03FF_FFFF => self.iwram.write(u32, addr, word),
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0x0400_0000...0x0400_03FE => io.write32(self, addr, word),
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// Internal Display Memory
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.set32(addr & 0x3FF, word),
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.write(u32, addr, word),
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0x0600_0000...0x06FF_FFFF => self.ppu.vram.write(u32, addr, word),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.set32(addr & 0x3FF, word),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.write(u32, addr, word),
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else => undWrite("Tried to write 0x{X:0>8} to 0x{X:0>8}", .{ word, addr }),
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}
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@ -94,20 +94,20 @@ pub fn write32(self: *Self, addr: u32, word: u32) void {
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pub fn read16(self: *const Self, addr: u32) u16 {
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return switch (addr) {
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// General Internal Memory
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0x0000_0000...0x0000_3FFF => self.bios.get16(addr),
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0x0200_0000...0x02FF_FFFF => self.ewram.get16(addr & 0x3FFFF),
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0x0300_0000...0x03FF_FFFF => self.iwram.get16(addr & 0x7FFF),
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0x0000_0000...0x0000_3FFF => self.bios.read(u16, addr),
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0x0200_0000...0x02FF_FFFF => self.ewram.read(u16, addr),
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0x0300_0000...0x03FF_FFFF => self.iwram.read(u16, addr),
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0x0400_0000...0x0400_03FE => io.read16(self, addr),
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// Internal Display Memory
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.get16(addr & 0x3FF),
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.read(u16, addr),
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0x0600_0000...0x06FF_FFFF => self.ppu.vram.read(u16, addr),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.get16(addr & 0x3FF),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.read(u16, addr),
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// External Memory (Game Pak)
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0x0800_0000...0x09FF_FFFF => self.pak.get16(addr - 0x0800_0000),
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0x0A00_0000...0x0BFF_FFFF => self.pak.get16(addr - 0x0A00_0000),
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0x0C00_0000...0x0DFF_FFFF => self.pak.get16(addr - 0x0C00_0000),
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0x0800_0000...0x09FF_FFFF => self.pak.read(u16, addr),
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0x0A00_0000...0x0BFF_FFFF => self.pak.read(u16, addr),
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0x0C00_0000...0x0DFF_FFFF => self.pak.read(u16, addr),
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else => undRead("Tried to read from 0x{X:0>8}", .{addr}),
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};
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@ -117,14 +117,14 @@ pub fn write16(self: *Self, addr: u32, halfword: u16) void {
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// TODO: write16 can write to GamePak Flash
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switch (addr) {
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// General Internal Memory
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0x0200_0000...0x02FF_FFFF => self.ewram.set16(addr & 0x3FFFF, halfword),
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0x0300_0000...0x03FF_FFFF => self.iwram.set16(addr & 0x7FFF, halfword),
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0x0200_0000...0x02FF_FFFF => self.ewram.write(u16, addr, halfword),
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0x0300_0000...0x03FF_FFFF => self.iwram.write(u16, addr, halfword),
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0x0400_0000...0x0400_03FE => io.write16(self, addr, halfword),
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// Internal Display Memory
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.set16(addr & 0x3FF, halfword),
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.write(u16, addr, halfword),
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0x0600_0000...0x06FF_FFFF => self.ppu.vram.write(u16, addr, halfword),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.set16(addr & 0x3FF, halfword),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.write(u16, addr, halfword),
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0x0800_00C4, 0x0800_00C6, 0x0800_00C8 => log.warn("Tried to write 0x{X:0>4} to GPIO", .{halfword}),
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else => undWrite("Tried to write 0x{X:0>4} to 0x{X:0>8}", .{ halfword, addr }),
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@ -134,21 +134,21 @@ pub fn write16(self: *Self, addr: u32, halfword: u16) void {
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pub fn read8(self: *const Self, addr: u32) u8 {
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return switch (addr) {
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// General Internal Memory
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0x0000_0000...0x0000_3FFF => self.bios.get8(addr),
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0x0200_0000...0x02FF_FFFF => self.ewram.get8(addr & 0x3FFFF),
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0x0300_0000...0x03FF_FFFF => self.iwram.get8(addr & 0x7FFF),
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0x0000_0000...0x0000_3FFF => self.bios.read(u8, addr),
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0x0200_0000...0x02FF_FFFF => self.ewram.read(u8, addr),
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0x0300_0000...0x03FF_FFFF => self.iwram.read(u8, addr),
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0x0400_0000...0x0400_03FE => io.read8(self, addr),
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// Internal Display Memory
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.get8(addr & 0x3FF),
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0x0500_0000...0x05FF_FFFF => self.ppu.palette.read(u8, addr),
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0x0600_0000...0x06FF_FFFF => self.ppu.vram.read(u8, addr),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.get8(addr & 0x3FF),
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0x0700_0000...0x07FF_FFFF => self.ppu.oam.read(u8, addr),
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// External Memory (Game Pak)
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0x0800_0000...0x09FF_FFFF => self.pak.get8(addr - 0x0800_0000),
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0x0A00_0000...0x0BFF_FFFF => self.pak.get8(addr - 0x0A00_0000),
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0x0C00_0000...0x0DFF_FFFF => self.pak.get8(addr - 0x0C00_0000),
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0x0E00_0000...0x0E00_FFFF => self.pak.backup.get8(addr & 0xFFFF),
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0x0800_0000...0x09FF_FFFF => self.pak.read(u8, addr),
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0x0A00_0000...0x0BFF_FFFF => self.pak.read(u8, addr),
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0x0C00_0000...0x0DFF_FFFF => self.pak.read(u8, addr),
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0x0E00_0000...0x0E00_FFFF => self.pak.backup.read(addr),
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else => undRead("Tried to read from 0x{X:0>2}", .{addr}),
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};
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@ -157,13 +157,13 @@ pub fn read8(self: *const Self, addr: u32) u8 {
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pub fn write8(self: *Self, addr: u32, byte: u8) void {
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switch (addr) {
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// General Internal Memory
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0x0200_0000...0x02FF_FFFF => self.ewram.set8(addr & 0x3FFFF, byte),
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0x0300_0000...0x03FF_FFFF => self.iwram.set8(addr & 0x7FFF, byte),
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0x0200_0000...0x02FF_FFFF => self.ewram.write(u8, addr, byte),
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0x0300_0000...0x03FF_FFFF => self.iwram.write(u8, addr, byte),
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0x0400_0000...0x0400_03FE => io.write8(self, addr, byte),
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0x0400_0410 => log.info("Ignored write of 0x{X:0>2} to 0x{X:0>8}", .{ byte, addr }),
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// External Memory (Game Pak)
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0x0E00_0000...0x0E00_FFFF => self.pak.backup.set8(addr & 0xFFFF, byte),
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0x0E00_0000...0x0E00_FFFF => self.pak.backup.write(addr, byte),
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else => undWrite("Tried to write 0x{X:0>2} to 0x{X:0>8}", .{ byte, addr }),
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}
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}
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@ -26,23 +26,15 @@ pub fn deinit(self: Self) void {
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if (self.buf) |buf| self.alloc.free(buf);
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}
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pub fn get32(self: *const Self, idx: usize) u32 {
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if (self.buf) |buf|
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return (@as(u32, buf[idx + 3]) << 24) | (@as(u32, buf[idx + 2]) << 16) | (@as(u32, buf[idx + 1]) << 8) | (@as(u32, buf[idx]));
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pub fn read(self: *const Self, comptime T: type, addr: usize) T {
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if (self.buf) |buf| {
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return switch (T) {
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u32 => (@as(u32, buf[addr + 3]) << 24) | (@as(u32, buf[addr + 2]) << 16) | (@as(u32, buf[addr + 1]) << 8) | (@as(u32, buf[addr])),
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u16 => (@as(u16, buf[addr + 1]) << 8) | @as(u16, buf[addr]),
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u8 => buf[addr],
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else => @compileError("BIOS: Unsupported read width"),
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};
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}
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std.debug.panic("[CPU/BIOS:32] ZBA tried to read from 0x{X:0>8} but no BIOS was provided.", .{idx});
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}
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pub fn get16(self: *const Self, idx: usize) u16 {
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if (self.buf) |buf|
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return (@as(u16, buf[idx + 1]) << 8) | @as(u16, buf[idx]);
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std.debug.panic("[CPU/BIOS:16] ZBA tried to read from 0x{X:0>8} but no BIOS was provided.", .{idx});
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}
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pub fn get8(self: *const Self, idx: usize) u8 {
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if (self.buf) |buf|
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return buf[idx];
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std.debug.panic("[CPU/BIOS:8] ZBA tried to read from 0x{X:0>8} but no BIOS was provided.", .{idx});
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std.debug.panic("[BIOS] ZBA tried to read {} from 0x{X:0>8} but not BIOS was present", .{ T, addr });
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}
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@ -20,28 +20,32 @@ pub fn deinit(self: Self) void {
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self.alloc.free(self.buf);
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}
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pub fn get32(self: *const Self, idx: usize) u32 {
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return (@as(u32, self.get16(idx + 2)) << 16) | @as(u32, self.get16(idx));
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pub fn read(self: *const Self, comptime T: type, address: usize) T {
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const addr = address & 0x3FFFF;
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return switch (T) {
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u32 => (@as(u32, self.buf[addr + 3]) << 24) | (@as(u32, self.buf[addr + 2]) << 16) | (@as(u32, self.buf[addr + 1]) << 8) | (@as(u32, self.buf[addr])),
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u16 => (@as(u16, self.buf[addr + 1]) << 8) | @as(u16, self.buf[addr]),
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u8 => self.buf[addr],
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else => @compileError("EWRAM: Unsupported read width"),
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};
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}
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pub fn set32(self: *Self, idx: usize, word: u32) void {
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self.set16(idx + 2, @truncate(u16, word >> 16));
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self.set16(idx, @truncate(u16, word));
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}
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pub fn write(self: *const Self, comptime T: type, address: usize, value: T) void {
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const addr = address & 0x3FFFF;
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pub fn get16(self: *const Self, idx: usize) u16 {
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return (@as(u16, self.buf[idx + 1]) << 8) | @as(u16, self.buf[idx]);
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}
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pub fn set16(self: *Self, idx: usize, halfword: u16) void {
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self.buf[idx + 1] = @truncate(u8, halfword >> 8);
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self.buf[idx] = @truncate(u8, halfword);
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}
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pub fn get8(self: *const Self, idx: usize) u8 {
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return self.buf[idx];
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}
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pub fn set8(self: *Self, idx: usize, byte: u8) void {
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self.buf[idx] = byte;
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return switch (T) {
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u32 => {
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self.buf[addr + 3] = @truncate(u8, value >> 24);
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self.buf[addr + 2] = @truncate(u8, value >> 16);
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self.buf[addr + 1] = @truncate(u8, value >> 8);
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self.buf[addr + 0] = @truncate(u8, value >> 0);
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},
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u16 => {
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self.buf[addr + 1] = @truncate(u8, value >> 8);
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self.buf[addr + 0] = @truncate(u8, value >> 0);
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},
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u8 => self.buf[addr] = value,
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else => @compileError("EWRAM: Unsupported write width"),
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};
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}
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@ -60,14 +60,13 @@ pub fn deinit(self: Self) void {
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self.backup.deinit();
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}
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pub fn get32(self: *const Self, idx: usize) u32 {
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return (@as(u32, self.get16(idx + 2)) << 16) | @as(u32, self.get16(idx));
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}
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pub fn read(self: *const Self, comptime T: type, address: u32) T {
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const addr = address & 0x1FF_FFFF;
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pub fn get16(self: *const Self, idx: usize) u16 {
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return (@as(u16, self.buf[idx + 1]) << 8) | @as(u16, self.buf[idx]);
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}
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pub fn get8(self: *const Self, idx: usize) u8 {
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return self.buf[idx];
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return switch (T) {
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u32 => (@as(T, self.buf[addr + 3]) << 24) | (@as(T, self.buf[addr + 2]) << 16) | (@as(T, self.buf[addr + 1]) << 8) | (@as(T, self.buf[addr])),
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u16 => (@as(T, self.buf[addr + 1]) << 8) | @as(T, self.buf[addr]),
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u8 => self.buf[addr],
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else => @compileError("GamePak: Unsupported read width"),
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};
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}
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@ -20,30 +20,32 @@ pub fn deinit(self: Self) void {
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self.alloc.free(self.buf);
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}
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pub fn get32(self: *const Self, idx: usize) u32 {
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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]));
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pub fn read(self: *const Self, comptime T: type, address: usize) T {
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const addr = address & 0x7FFF;
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return switch (T) {
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u32 => (@as(u32, self.buf[addr + 3]) << 24) | (@as(u32, self.buf[addr + 2]) << 16) | (@as(u32, self.buf[addr + 1]) << 8) | (@as(u32, self.buf[addr])),
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u16 => (@as(u16, self.buf[addr + 1]) << 8) | @as(u16, self.buf[addr]),
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u8 => self.buf[addr],
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else => @compileError("IWRAM: Unsupported read width"),
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};
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}
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pub fn set32(self: *Self, idx: usize, word: u32) void {
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self.buf[idx + 3] = @truncate(u8, word >> 24);
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self.buf[idx + 2] = @truncate(u8, word >> 16);
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self.buf[idx + 1] = @truncate(u8, word >> 8);
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self.buf[idx] = @truncate(u8, word);
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}
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pub fn write(self: *const Self, comptime T: type, address: usize, value: T) void {
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const addr = address & 0x7FFF;
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pub fn get16(self: *const Self, idx: usize) u16 {
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return (@as(u16, self.buf[idx + 1]) << 8) | @as(u16, self.buf[idx]);
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}
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pub fn set16(self: *Self, idx: usize, halfword: u16) void {
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self.buf[idx + 1] = @truncate(u8, halfword >> 8);
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self.buf[idx] = @truncate(u8, halfword);
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}
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pub fn get8(self: *const Self, idx: usize) u8 {
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return self.buf[idx];
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}
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pub fn set8(self: *Self, idx: usize, byte: u8) void {
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self.buf[idx] = byte;
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return switch (T) {
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u32 => {
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self.buf[addr + 3] = @truncate(u8, value >> 24);
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self.buf[addr + 2] = @truncate(u8, value >> 16);
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self.buf[addr + 1] = @truncate(u8, value >> 8);
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self.buf[addr + 0] = @truncate(u8, value >> 0);
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},
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u16 => {
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self.buf[addr + 1] = @truncate(u8, value >> 8);
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self.buf[addr + 0] = @truncate(u8, value >> 0);
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},
|
||||
u8 => self.buf[addr] = value,
|
||||
else => @compileError("IWRAM: Unsupported write width"),
|
||||
};
|
||||
}
|
||||
|
|
|
|||
|
|
@ -115,38 +115,42 @@ pub const Backup = struct {
|
|||
}
|
||||
}
|
||||
|
||||
pub fn get8(self: *const Self, idx: usize) u8 {
|
||||
pub fn read(self: *const Self, address: usize) u8 {
|
||||
const addr = address & 0xFFFF;
|
||||
|
||||
switch (self.kind) {
|
||||
.Flash => {
|
||||
switch (idx) {
|
||||
switch (addr) {
|
||||
0x0000 => if (self.flash.id_mode) return 0x32, // Panasonic manufacturer ID
|
||||
0x0001 => if (self.flash.id_mode) return 0x1B, // Panasonic device ID
|
||||
else => {},
|
||||
}
|
||||
|
||||
return self.flash.read(self.buf, idx);
|
||||
return self.flash.read(self.buf, addr);
|
||||
},
|
||||
.Flash1M => {
|
||||
switch (idx) {
|
||||
switch (addr) {
|
||||
0x0000 => if (self.flash.id_mode) return 0x62, // Sanyo manufacturer ID
|
||||
0x0001 => if (self.flash.id_mode) return 0x13, // Sanyo device ID
|
||||
else => {},
|
||||
}
|
||||
|
||||
return self.flash.read(self.buf, idx);
|
||||
return self.flash.read(self.buf, addr);
|
||||
},
|
||||
.Eeprom => return self.buf[idx],
|
||||
.Sram => return self.buf[idx & 0x7FFF], // 32K SRAM chip is mirrored
|
||||
.Eeprom => return self.buf[addr],
|
||||
.Sram => return self.buf[addr & 0x7FFF], // 32K SRAM chip is mirrored
|
||||
}
|
||||
}
|
||||
|
||||
pub fn set8(self: *Self, idx: usize, byte: u8) void {
|
||||
pub fn write(self: *Self, address: usize, byte: u8) void {
|
||||
const addr = address & 0xFFFF;
|
||||
|
||||
switch (self.kind) {
|
||||
.Flash, .Flash1M => {
|
||||
if (self.flash.prep_write) return self.flash.write(self.buf, idx, byte);
|
||||
if (self.flash.shouldEraseSector(idx, byte)) return self.flash.eraseSector(self.buf, idx);
|
||||
if (self.flash.prep_write) return self.flash.write(self.buf, addr, byte);
|
||||
if (self.flash.shouldEraseSector(addr, byte)) return self.flash.eraseSector(self.buf, addr);
|
||||
|
||||
switch (idx) {
|
||||
switch (addr) {
|
||||
0x0000 => if (self.kind == .Flash1M and self.flash.set_bank) {
|
||||
self.flash.bank = @truncate(u1, byte);
|
||||
},
|
||||
|
|
@ -165,8 +169,8 @@ pub const Backup = struct {
|
|||
else => {},
|
||||
}
|
||||
},
|
||||
.Eeprom => self.buf[idx] = byte,
|
||||
.Sram => self.buf[idx & 0x7FFF] = byte,
|
||||
.Eeprom => self.buf[addr] = byte,
|
||||
.Sram => self.buf[addr & 0x7FFF] = byte,
|
||||
}
|
||||
}
|
||||
};
|
||||
|
|
|
|||
98
src/ppu.zig
98
src/ppu.zig
|
|
@ -92,11 +92,11 @@ pub const Ppu = struct {
|
|||
search: while (i < self.oam.buf.len) : (i += 8) {
|
||||
// Attributes in OAM are 6 bytes long, with 2 bytes of padding
|
||||
// Grab Attributes from OAM
|
||||
const attr0 = @bitCast(Attr0, self.oam.get16(i));
|
||||
const attr0 = @bitCast(Attr0, self.oam.read(u16, i));
|
||||
|
||||
// Only consider enabled Sprites
|
||||
if (!attr0.disabled.read()) {
|
||||
const attr1 = @bitCast(Attr1, self.oam.get16(i + 2));
|
||||
const attr1 = @bitCast(Attr1, self.oam.read(u16, i + 2));
|
||||
|
||||
// When fetching sprites we only care about ones that could be rendered
|
||||
// on this scanline
|
||||
|
|
@ -113,7 +113,7 @@ pub const Ppu = struct {
|
|||
if ((start <= y and y < end) or (istart <= iy and iy < iend)) {
|
||||
for (self.scanline_sprites) |*maybe_sprite| {
|
||||
if (maybe_sprite.* == null) {
|
||||
maybe_sprite.* = Sprite.init(attr0, attr1, @bitCast(Attr2, self.oam.get16(i + 4)));
|
||||
maybe_sprite.* = Sprite.init(attr0, attr1, @bitCast(Attr2, self.oam.read(u16, i + 4)));
|
||||
continue :search;
|
||||
}
|
||||
}
|
||||
|
|
@ -205,7 +205,7 @@ pub const Ppu = struct {
|
|||
} else tile;
|
||||
|
||||
// Sprite Palette starts at 0x0500_0200
|
||||
if (pal_id != 0) self.scanline_buf[@bitCast(u9, x)] = self.palette.get16(0x200 + pal_id * 2);
|
||||
if (pal_id != 0) self.scanline_buf[@bitCast(u9, x)] = self.palette.read(u16, 0x200 + pal_id * 2);
|
||||
}
|
||||
|
||||
fn drawBackround(self: *Self, comptime n: u3) void {
|
||||
|
|
@ -266,7 +266,7 @@ pub const Ppu = struct {
|
|||
break :blk pal_bank | nybble_tile;
|
||||
} else tile;
|
||||
|
||||
if (pal_id != 0) self.scanline_buf[i] = self.palette.get16(pal_id * 2);
|
||||
if (pal_id != 0) self.scanline_buf[i] = self.palette.read(u16, pal_id * 2);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -321,7 +321,7 @@ pub const Ppu = struct {
|
|||
// Render Current Scanline
|
||||
for (self.vram.buf[vram_base .. vram_base + width]) |byte, i| {
|
||||
const pal_id = @as(u16, byte) * @sizeOf(u16);
|
||||
const bgr555 = self.palette.get16(pal_id);
|
||||
const bgr555 = self.palette.read(u16, pal_id);
|
||||
|
||||
std.mem.copy(u8, self.framebuf[fb_base + i * @sizeOf(u32) ..][0..4], &intToBytes(u32, toRgba8888(bgr555)));
|
||||
}
|
||||
|
|
@ -432,30 +432,37 @@ const Palette = struct {
|
|||
self.alloc.free(self.buf);
|
||||
}
|
||||
|
||||
pub fn get32(self: *const Self, idx: usize) u32 {
|
||||
return (@as(u32, self.get16(idx + 2)) << 16) | @as(u32, self.get16(idx));
|
||||
pub fn read(self: *const Self, comptime T: type, address: usize) T {
|
||||
const addr = address & 0x3FF;
|
||||
|
||||
return switch (T) {
|
||||
u32 => (@as(T, self.buf[addr + 3]) << 24) | (@as(T, self.buf[addr + 2]) << 16) | (@as(T, self.buf[addr + 1]) << 8) | (@as(T, self.buf[addr])),
|
||||
u16 => (@as(T, self.buf[addr + 1]) << 8) | @as(T, self.buf[addr]),
|
||||
u8 => self.buf[addr],
|
||||
else => @compileError("PALRAM: Unsupported read width"),
|
||||
};
|
||||
}
|
||||
|
||||
pub fn set32(self: *Self, idx: usize, word: u32) void {
|
||||
self.set16(idx + 2, @truncate(u16, word >> 16));
|
||||
self.set16(idx, @truncate(u16, word));
|
||||
}
|
||||
pub fn write(self: *Self, comptime T: type, address: usize, value: T) void {
|
||||
const addr = address & 0x3FF;
|
||||
|
||||
pub fn get16(self: *const Self, idx: usize) u16 {
|
||||
return (@as(u16, self.buf[idx + 1]) << 8) | @as(u16, self.buf[idx]);
|
||||
}
|
||||
|
||||
pub fn set16(self: *Self, idx: usize, halfword: u16) void {
|
||||
self.buf[idx + 1] = @truncate(u8, halfword >> 8);
|
||||
self.buf[idx] = @truncate(u8, halfword);
|
||||
}
|
||||
|
||||
pub fn get8(self: *const Self, idx: usize) u8 {
|
||||
return self.buf[idx];
|
||||
switch (T) {
|
||||
u32 => {
|
||||
self.buf[addr + 3] = @truncate(u8, value >> 24);
|
||||
self.buf[addr + 2] = @truncate(u8, value >> 16);
|
||||
self.buf[addr + 1] = @truncate(u8, value >> 8);
|
||||
self.buf[addr + 0] = @truncate(u8, value >> 0);
|
||||
},
|
||||
u16 => {
|
||||
self.buf[addr + 1] = @truncate(u8, value >> 8);
|
||||
self.buf[addr + 0] = @truncate(u8, value >> 0);
|
||||
},
|
||||
else => @compileError("PALRAM: Unsupported write width"),
|
||||
}
|
||||
}
|
||||
|
||||
fn getBackdrop(self: *const Self) u16 {
|
||||
return self.get16(0);
|
||||
return self.read(u16, 0);
|
||||
}
|
||||
};
|
||||
|
||||
|
|
@ -534,28 +541,33 @@ const Oam = struct {
|
|||
self.alloc.free(self.buf);
|
||||
}
|
||||
|
||||
pub fn get32(self: *const Self, idx: usize) u32 {
|
||||
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 read(self: *const Self, comptime T: type, address: usize) T {
|
||||
const addr = address & 0x3FF;
|
||||
|
||||
return switch (T) {
|
||||
u32 => (@as(T, self.buf[addr + 3]) << 24) | (@as(T, self.buf[addr + 2]) << 16) | (@as(T, self.buf[addr + 1]) << 8) | (@as(T, self.buf[addr])),
|
||||
u16 => (@as(T, self.buf[addr + 1]) << 8) | @as(T, self.buf[addr]),
|
||||
u8 => self.buf[addr],
|
||||
else => @compileError("OAM: Unsupported read width"),
|
||||
};
|
||||
}
|
||||
|
||||
pub fn set32(self: *Self, idx: usize, word: u32) void {
|
||||
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 write(self: *Self, comptime T: type, address: usize, value: T) void {
|
||||
const addr = address & 0x3FF;
|
||||
|
||||
pub fn get16(self: *const Self, idx: usize) u16 {
|
||||
return (@as(u16, self.buf[idx + 1]) << 8) | @as(u16, self.buf[idx]);
|
||||
}
|
||||
|
||||
pub fn set16(self: *Self, idx: usize, halfword: u16) void {
|
||||
self.buf[idx + 1] = @truncate(u8, halfword >> 8);
|
||||
self.buf[idx] = @truncate(u8, halfword);
|
||||
}
|
||||
|
||||
pub fn get8(self: *const Self, idx: usize) u8 {
|
||||
return self.buf[idx];
|
||||
switch (T) {
|
||||
u32 => {
|
||||
self.buf[addr + 3] = @truncate(u8, value >> 24);
|
||||
self.buf[addr + 2] = @truncate(u8, value >> 16);
|
||||
self.buf[addr + 1] = @truncate(u8, value >> 8);
|
||||
self.buf[addr + 0] = @truncate(u8, value >> 0);
|
||||
},
|
||||
u16 => {
|
||||
self.buf[addr + 1] = @truncate(u8, value >> 8);
|
||||
self.buf[addr + 0] = @truncate(u8, value >> 0);
|
||||
},
|
||||
else => @compileError("OAM: Unsupported write width"),
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue