chore: make clippy happy

This commit is contained in:
Rekai Nyangadzayi Musuka 2021-03-16 01:05:13 -05:00
parent bfde24cc8d
commit 19f642eafe
8 changed files with 90 additions and 88 deletions

View File

@ -1,25 +1,25 @@
use super::cartridge::Cartridge;
use super::high_ram::HighRAM;
use super::high_ram::HighRam;
use super::instruction::Cycles;
use super::interrupt::Interrupt;
use super::ppu::PPU;
use super::ppu::Ppu;
use super::serial::Serial;
use super::sound::Sound;
use super::timer::Timer;
use super::work_ram::{VariableWorkRAM, WorkRAM};
use super::work_ram::{VariableWorkRam, WorkRam};
use std::{convert::TryInto, fs::File, io::Read};
#[derive(Debug, Clone)]
pub struct Bus {
boot: Option<[u8; 256]>, // Boot ROM is 256b long
cartridge: Option<Cartridge>,
pub ppu: PPU,
wram: WorkRAM,
vwram: VariableWorkRAM,
pub ppu: Ppu,
wram: WorkRam,
vwram: VariableWorkRam,
timer: Timer,
interrupt: Interrupt,
sound: Sound,
hram: HighRAM,
hram: HighRam,
serial: Serial,
}

View File

@ -5,7 +5,7 @@ use std::path::Path;
#[derive(Debug, Clone, Default)]
pub struct Cartridge {
memory: Vec<u8>,
mbc: Box<dyn MBC>,
mbc: Box<dyn Mbc>,
}
impl Cartridge {
@ -20,7 +20,7 @@ impl Cartridge {
})
}
fn detect_mbc(memory: &[u8]) -> Box<dyn MBC> {
fn detect_mbc(memory: &[u8]) -> Box<dyn Mbc> {
let ram_size = Self::find_ram_size(&memory);
let bank_count = Self::find_bank_count(&memory);
let mbc_kind = Self::find_mbc(&memory);
@ -40,7 +40,7 @@ impl Cartridge {
Box::new(mbc)
}
fn find_ram_size(memory: &[u8]) -> RAMSize {
fn find_ram_size(memory: &[u8]) -> RamSize {
let id = memory[0x0149];
id.into()
}
@ -89,7 +89,7 @@ struct MBC1 {
current_rom_bank: u8, // 5-bit Number
current_ram_bank: u8, // 2-bit number
mode: bool,
ram_size: RAMSize,
ram_size: RamSize,
ram: Box<[u8]>,
bank_count: BankCount,
ram_enabled: bool,
@ -139,7 +139,7 @@ impl MBC1 {
}
}
impl MBC for MBC1 {
impl Mbc for MBC1 {
fn handle_read(&self, addr: u16) -> MBCResult {
use MBCResult::*;
@ -159,10 +159,10 @@ impl MBC for MBC1 {
0xA000..=0xBFFF => {
if self.ram_enabled {
let ram_addr = match self.ram_size {
RAMSize::_2KB | RAMSize::_8KB => {
RamSize::_2KB | RamSize::_8KB => {
(addr as u32 - 0xA000) % self.ram_size.to_byte_count()
}
RAMSize::_32KB => {
RamSize::_32KB => {
if self.mode {
0x2000 * self.current_ram_bank as u32 + (addr as u32 - 0xA000)
} else {
@ -196,17 +196,17 @@ impl MBC for MBC1 {
0xA000..=0xBFFF => {
if self.ram_enabled {
let ram_addr = match self.ram_size {
RAMSize::_2KB | RAMSize::_8KB => {
RamSize::_2KB | RamSize::_8KB => {
(addr as u32 - 0xA000) % self.ram_size.to_byte_count()
}
RAMSize::_32KB => {
RamSize::_32KB => {
if self.mode {
0x2000 * (self.current_ram_bank as u32) + (addr as u32 - 0xA000)
} else {
addr as u32 - 0xA000
}
}
_ => unreachable!("RAMSize can not be greater than 32KB on MBC1"),
_ => unreachable!("RAM size can not be greater than 32KB on MBC1"),
};
self.ram[ram_addr as usize] = byte;
@ -217,20 +217,20 @@ impl MBC for MBC1 {
}
}
trait MBC: CloneMBC {
trait Mbc: CloneMBC {
fn handle_read(&self, addr: u16) -> MBCResult;
fn handle_write(&mut self, addr: u16, byte: u8);
}
trait CloneMBC {
fn clone_mbc<'a>(&self) -> Box<dyn MBC>;
fn clone_mbc(&self) -> Box<dyn Mbc>;
}
impl<T> CloneMBC for T
where
T: MBC + Clone + 'static,
T: Mbc + Clone + 'static,
{
fn clone_mbc<'a>(&self) -> Box<dyn MBC> {
fn clone_mbc<'a>(&self) -> Box<dyn Mbc> {
Box::new(self.clone())
}
}
@ -254,7 +254,7 @@ impl Default for MBCKind {
}
#[derive(Debug, Clone, Copy)]
enum RAMSize {
enum RamSize {
None = 0,
_2KB = 1,
_8KB = 2,
@ -263,9 +263,9 @@ enum RAMSize {
_64KB = 5, // Split into 8 RAm Banks
}
impl RAMSize {
impl RamSize {
pub fn to_byte_count(&self) -> u32 {
use RAMSize::*;
use RamSize::*;
match *self {
None => 0,
@ -278,15 +278,15 @@ impl RAMSize {
}
}
impl Default for RAMSize {
impl Default for RamSize {
fn default() -> Self {
Self::None
}
}
impl From<u8> for RAMSize {
impl From<u8> for RamSize {
fn from(byte: u8) -> Self {
use RAMSize::*;
use RamSize::*;
match byte {
0x00 => None,
@ -366,19 +366,19 @@ impl From<u8> for BankCount {
}
}
impl std::fmt::Debug for Box<dyn MBC> {
impl std::fmt::Debug for Box<dyn Mbc> {
fn fmt(&self, _f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
todo!("Implement Debug for Box<dyn MBC> Trait Object");
}
}
impl std::clone::Clone for Box<dyn MBC> {
impl std::clone::Clone for Box<dyn Mbc> {
fn clone(&self) -> Self {
self.clone_mbc()
}
}
impl std::default::Default for Box<dyn MBC> {
impl std::default::Default for Box<dyn Mbc> {
fn default() -> Self {
Box::new(MBC1::default())
}

View File

@ -1,6 +1,6 @@
use super::bus::Bus;
use super::instruction::{Cycles, Instruction};
use super::ppu::PPU;
use super::ppu::Ppu;
use bitfield::bitfield;
use std::{
fmt::{Display, Formatter, Result as FmtResult},
@ -130,7 +130,7 @@ impl Cpu {
}
impl Cpu {
pub fn get_ppu(&mut self) -> &mut PPU {
pub fn get_ppu(&mut self) -> &mut Ppu {
&mut self.bus.ppu
}
}

View File

@ -1,9 +1,9 @@
#[derive(Debug, Clone)]
pub struct HighRAM {
pub struct HighRam {
buf: Box<[u8]>,
}
impl Default for HighRAM {
impl Default for HighRam {
fn default() -> Self {
Self {
buf: vec![0u8; 128].into_boxed_slice(),
@ -11,7 +11,7 @@ impl Default for HighRAM {
}
}
impl HighRAM {
impl HighRam {
pub fn write_byte(&mut self, index: usize, byte: u8) {
self.buf[index] = byte;
}

View File

@ -2,6 +2,7 @@ use super::cpu::{Cpu, Flags, Register, RegisterPair};
use std::{convert::TryFrom, fmt::Debug};
#[derive(Debug, Copy, Clone)]
#[allow(clippy::upper_case_acronyms)]
pub enum Instruction {
NOP,
LD(LDTarget, LDTarget),
@ -342,7 +343,7 @@ impl Instruction {
Instruction::ADD(lhs, rhs) => match (lhs, rhs) {
(MATHTarget::RegisterPair(RegisterPair::HL), MATHTarget::RegisterPair(pair)) => {
// ADD HL, rp[p] | add register pair to HL.
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
match pair {
RegisterPair::BC
@ -362,7 +363,7 @@ impl Instruction {
}
(MATHTarget::Register(InstrRegister::A), MATHTarget::Register(reg)) => {
// ADD A, r[z] | Add (A + r[z]) to register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let sum;
let cycles: Cycles;
@ -391,7 +392,7 @@ impl Instruction {
}
(MATHTarget::RegisterPair(RegisterPair::SP), MATHTarget::ImmediateByte(d)) => {
// ADD SP, d | Add d (is signed) to register pair SP.
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let d = d as i8;
let sum = Self::add_u16_i8(cpu.register_pair(RegisterPair::SP), d, &mut flags);
cpu.set_register_pair(RegisterPair::SP, sum);
@ -399,7 +400,7 @@ impl Instruction {
}
(MATHTarget::Register(InstrRegister::A), MATHTarget::ImmediateByte(n)) => {
// ADD A, n | Add n to register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let sum = Self::add_u8s(cpu.register(Register::A), n, &mut flags);
cpu.set_register(Register::A, sum);
@ -412,7 +413,7 @@ impl Instruction {
match registers {
Registers::Byte(reg) => {
// INC r[y] | Increment Register
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let cycles: Cycles;
match reg {
@ -468,7 +469,7 @@ impl Instruction {
}
Instruction::DEC(Registers::Byte(reg)) => {
// DEC r[y] | Decrement Register
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let cycles: Cycles;
match reg {
@ -497,7 +498,7 @@ impl Instruction {
}
Instruction::RLCA => {
// Rotate Register A left
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a = cpu.register(Register::A);
let msb = a >> 7;
@ -510,7 +511,7 @@ impl Instruction {
}
Instruction::RRCA => {
// Rotate Register A right
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a = cpu.register(Register::A);
let lsb = a & 0x01;
@ -523,7 +524,7 @@ impl Instruction {
}
Instruction::RLA => {
// Rotate register A left through carry
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a = cpu.register(Register::A);
let (rot_a, carry) = Self::rl_thru_carry(a, flags.c());
@ -535,7 +536,7 @@ impl Instruction {
}
Instruction::RRA => {
// Rotate register A right through carry
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a = cpu.register(Register::A);
let (rot_a, carry) = Self::rr_thru_carry(a, flags.c());
@ -548,7 +549,7 @@ impl Instruction {
Instruction::DAA => unimplemented!(),
Instruction::CPL => {
// Compliment A register (inverse)
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a = cpu.register(Register::A);
flags.set_n(true);
@ -560,7 +561,7 @@ impl Instruction {
}
Instruction::SCF => {
// Set Carry Flag
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
flags.set_n(false);
flags.set_h(false);
@ -571,7 +572,7 @@ impl Instruction {
}
Instruction::CCF => {
// Compliment Carry Flag (inverse)
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
flags.set_n(false);
flags.set_h(false);
@ -585,7 +586,7 @@ impl Instruction {
MATHTarget::Register(reg) => {
// ADC A, r[z] | Add register r[z] plus the Carry flag to A
// FIXME: Do I Add register A as well?
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let cycles: Cycles;
let sum;
@ -615,7 +616,7 @@ impl Instruction {
}
MATHTarget::ImmediateByte(n) => {
// ADC A, n | Add immediate byte plus the carry flag to A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let value = n + (flags.c() as u8);
let sum = Self::add_u8s(cpu.register(Register::A), value, &mut flags);
@ -628,7 +629,7 @@ impl Instruction {
Instruction::SUB(target) => match target {
MATHTarget::Register(reg) => {
// SUB r[z] | Subtract the value in register r[z] from register A, then store in A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let cycles: Cycles;
let diff;
@ -658,7 +659,7 @@ impl Instruction {
}
MATHTarget::ImmediateByte(n) => {
// SUB n | Subtract the immediate byte from register A, then store in A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let diff = Self::sub_u8s(cpu.register(Register::A), n, &mut flags);
cpu.set_flags(flags);
@ -671,7 +672,7 @@ impl Instruction {
MATHTarget::Register(reg) => {
// SBC A, r[z] | Subtract the value from register r[z] from A, add the Carry flag and then store in A
// FIXME: See ADC, is this a correct understanding of this Instruction
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let cycles: Cycles;
let diff;
@ -703,7 +704,7 @@ impl Instruction {
MATHTarget::ImmediateByte(n) => {
// SBC A, n | Subtract the value from immediate byte from A, add the carry flag and then store in A
// FIXME: The Fixme above applies to this variant as well
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let value = n + (flags.c() as u8);
let diff = Self::sub_u8s(cpu.register(Register::A), value, &mut flags);
@ -716,7 +717,7 @@ impl Instruction {
Instruction::AND(target) => match target {
MATHTarget::Register(reg) => {
// AND r[z] | Bitwise AND register r[z] and register A, store in register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let cycles: Cycles;
let result;
@ -747,7 +748,7 @@ impl Instruction {
}
MATHTarget::ImmediateByte(n) => {
// AND n | Bitwise AND immediate byte and register A, store in register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let result = cpu.register(Register::A) & n;
flags.update(result == 0, false, true, false);
@ -760,7 +761,7 @@ impl Instruction {
Instruction::XOR(target) => match target {
MATHTarget::Register(reg) => {
// XOR r[z] | Bitwise XOR register r[z] and register A, store in register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let cycles: Cycles;
let result;
@ -791,7 +792,7 @@ impl Instruction {
}
MATHTarget::ImmediateByte(n) => {
// XOR n | Bitwise XOR immediate byte and register A, store in register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let result = cpu.register(Register::A) ^ n;
flags.update(result == 0, false, false, false);
@ -804,7 +805,7 @@ impl Instruction {
Instruction::OR(target) => match target {
MATHTarget::Register(reg) => {
// OR r[z] | Bitwise OR register r[z] and register A, store in register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let cycles: Cycles;
let result;
@ -835,7 +836,7 @@ impl Instruction {
}
MATHTarget::ImmediateByte(n) => {
// OR n | Bitwise OR on immediate byte n and register A, store in register A
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let result = cpu.register(Register::A) | n;
flags.update(result == 0, false, false, false);
@ -848,7 +849,7 @@ impl Instruction {
Instruction::CP(target) => match target {
MATHTarget::Register(reg) => {
// CP r[z] | Same behaviour as SUB, except the result is not stored.
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let a_value = cpu.register(Register::A);
let cycles: Cycles;
@ -876,7 +877,7 @@ impl Instruction {
}
MATHTarget::ImmediateByte(n) => {
// CP n | Same behaviour as SUB, except the result is not stored,
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let _ = Self::sub_u8s(cpu.register(Register::A), n, &mut flags);
cpu.set_flags(flags);
@ -932,7 +933,7 @@ impl Instruction {
Instruction::LDHL(d) => {
// LDHL SP + d | Add SP + d to register HL
// LD HL, SP + d | Add SP + d to register HL
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let sum = Self::add_u16_i8(cpu.register_pair(RegisterPair::SP), d, &mut flags);
cpu.set_register_pair(RegisterPair::HL, sum);
Cycles::new(12)
@ -1081,7 +1082,7 @@ impl Instruction {
}
Instruction::RLC(reg) => {
// RLC r[z] | Rotate register r[z] left
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let msb;
let rot_reg;
let cycles: Cycles;
@ -1121,7 +1122,7 @@ impl Instruction {
}
Instruction::RRC(reg) => {
// RRC r[z] | Rotate Register r[z] right
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let lsb;
let rot_reg;
let cycles: Cycles;
@ -1161,7 +1162,7 @@ impl Instruction {
}
Instruction::RL(reg) => {
// RL r[z] | Rotate register r[z] left through carry
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let carry;
let rot_reg;
let cycles: Cycles;
@ -1204,7 +1205,7 @@ impl Instruction {
}
Instruction::RR(reg) => {
// RR r[z] | Rotate register r[z] right through carry
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let carry;
let rot_reg;
let cycles: Cycles;
@ -1247,7 +1248,7 @@ impl Instruction {
}
Instruction::SLA(reg) => {
// SLA r[z] | Shift left arithmetic register r[z]
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let shift_reg;
let msb;
let cycles: Cycles;
@ -1288,7 +1289,7 @@ impl Instruction {
}
Instruction::SRA(reg) => {
// SRA r[z] | Shift right arithmetic register r[z]
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let shift_reg;
let lsb;
let cycles: Cycles;
@ -1331,7 +1332,7 @@ impl Instruction {
}
Instruction::SWAP(reg) => {
// SWAP r[z] | Swap the 4 highest and lowest bits in a byte
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let swap_reg;
let cycles: Cycles;
@ -1370,7 +1371,7 @@ impl Instruction {
}
Instruction::SRL(reg) => {
// SRL r[z] | Shift right logic register r[z]
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let lsb;
let shift_reg;
let cycles: Cycles;
@ -1411,7 +1412,7 @@ impl Instruction {
}
Instruction::BIT(y, reg) => {
// BIT y, r[z] | Test y is in register r[z]
let mut flags: Flags = cpu.flags().clone();
let mut flags: Flags = *cpu.flags();
let is_bit_set;
let cycles: Cycles;
match reg {
@ -1647,6 +1648,7 @@ impl Instruction {
fn from_unprefixed_byte(cpu: &mut Cpu, opcode: u8) -> Self {
// https://gb-archive.github.io/salvage/decoding_gbz80_opcodes/Decoding%20Gamboy%20Z80%20Opcodes.html
let x = (opcode >> 6) & 0x03;
let y = (opcode >> 3) & 0x07;
let z = opcode & 0x07;

View File

@ -41,7 +41,7 @@ impl InterruptEnable {
pub fn set_vblank(&self, flag: &mut InterruptFlag, value: bool) {
let prev = self._vblank();
if prev == false && value {
if !prev && value {
flag.set_vblank(true);
}
@ -51,7 +51,7 @@ impl InterruptEnable {
pub fn set_lcd_stat(&self, flag: &mut InterruptFlag, value: bool) {
let prev = self._lcd_stat();
if prev == false && value {
if !prev && value {
flag.set_lcd_stat(true);
}
@ -61,7 +61,7 @@ impl InterruptEnable {
pub fn set_timer(&self, flag: &mut InterruptFlag, value: bool) {
let prev = self._timer();
if prev == false && value {
if !prev && value {
flag.set_timer(true);
}
@ -71,7 +71,7 @@ impl InterruptEnable {
pub fn set_serial(&self, flag: &mut InterruptFlag, value: bool) {
let prev = self._serial();
if prev == false && value {
if !prev && value {
flag.set_serial(true);
}
@ -81,7 +81,7 @@ impl InterruptEnable {
pub fn set_joypad(&self, flag: &mut InterruptFlag, value: bool) {
let prev = self._joypad();
if prev == false && value {
if !prev && value {
flag.set_joypad(true);
}

View File

@ -4,7 +4,7 @@ use bitfield::bitfield;
const GB_WIDTH: usize = 160;
const GB_HEIGHT: usize = 144;
#[derive(Debug, Clone)]
pub struct PPU {
pub struct Ppu {
pub lcd_control: LCDControl,
pub monochrome: Monochrome,
pub pos: ScreenPosition,
@ -16,7 +16,7 @@ pub struct PPU {
mode: Mode,
}
impl PPU {
impl Ppu {
pub fn step(&mut self, cycles: Cycles) {
self.cycles += cycles;
@ -67,7 +67,7 @@ impl PPU {
}
}
impl Default for PPU {
impl Default for Ppu {
fn default() -> Self {
Self {
lcd_control: Default::default(),
@ -131,7 +131,7 @@ impl From<LCDStatus> for u8 {
pub enum LCDMode {
HBlank = 0,
VBlank = 1,
OAM = 2,
Oam = 2,
Transfer = 3,
}
@ -140,7 +140,7 @@ impl From<u8> for LCDMode {
match byte {
0b00 => Self::HBlank,
0b01 => Self::VBlank,
0b10 => Self::OAM,
0b10 => Self::Oam,
0b11 => Self::Transfer,
_ => unreachable!("{:#04X} is not a valid value for LCDMode", byte),
}

View File

@ -1,9 +1,9 @@
#[derive(Debug, Clone)]
pub struct WorkRAM {
pub struct WorkRam {
bank: Box<[u8]>,
}
impl WorkRAM {
impl WorkRam {
pub fn write_byte(&mut self, index: usize, byte: u8) {
self.bank[index] = byte;
}
@ -13,7 +13,7 @@ impl WorkRAM {
}
}
impl Default for WorkRAM {
impl Default for WorkRam {
fn default() -> Self {
Self {
bank: vec![0u8; 4096].into_boxed_slice(),
@ -33,12 +33,12 @@ pub enum BankNumber {
}
#[derive(Debug, Clone)]
pub struct VariableWorkRAM {
pub struct VariableWorkRam {
current: BankNumber,
bank_n: Box<[[u8; 4096]]>, // 4K for Variable amount of Banks (Banks 1 -> 7) in Game Boy Colour
}
impl Default for VariableWorkRAM {
impl Default for VariableWorkRam {
fn default() -> Self {
Self {
current: BankNumber::One,
@ -47,7 +47,7 @@ impl Default for VariableWorkRAM {
}
}
impl VariableWorkRAM {
impl VariableWorkRam {
pub fn set_current_bank(&mut self, bank: BankNumber) {
self.current = bank;
}