1
0
mirror of https://github.com/mre/mos6502.git synced 2024-11-24 11:31:00 +00:00
This commit is contained in:
Matthias 2023-04-05 22:43:19 +02:00
parent 0f882e974b
commit 6a65b375c4
6 changed files with 314 additions and 46 deletions

269
Cargo.lock generated
View File

@ -2,6 +2,15 @@
# It is not intended for manual editing.
version = 3
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@ -57,12 +66,52 @@ dependencies = [
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@ -87,6 +136,18 @@ version = "0.3.0"
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@ -96,6 +157,29 @@ dependencies = [
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@ -104,9 +188,15 @@ checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d"
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@ -125,9 +215,10 @@ checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
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@ -234,6 +325,23 @@ dependencies = [
"bitflags 1.3.2",
]
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@ -243,6 +351,20 @@ dependencies = [
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View File

@ -53,6 +53,7 @@ default-features = false
skeptic = "0.13.7"
[dev-dependencies]
env_logger = "0.10.0"
skeptic = "0.13.7"
[features]

View File

@ -27,7 +27,6 @@
use crate::instruction::{self, AddressingMode, DecodedInstr, Instruction, OpInput};
use crate::memory::Bus;
use crate::registers::{Registers, StackPointer, Status, StatusArgs};
fn arr_to_addr(arr: &[u8]) -> u16 {
@ -62,6 +61,8 @@ impl<M: Bus> CPU<M> {
match instruction::OPCODES[x as usize] {
Some((instr, am)) => {
debug!("{instr:?}");
let extra_bytes = am.extra_bytes();
let num_bytes = extra_bytes + 1;

View File

@ -113,7 +113,7 @@ pub enum OpInput {
UseAddress(u16),
}
#[derive(Copy, Clone)]
#[derive(Copy, Clone, Debug)]
pub enum AddressingMode {
Accumulator, // 1 LSR A work directly on accumulator
Implied, // 1 BRK

View File

@ -34,30 +34,37 @@
// end: Address,
// }
const ADDR_LO_BARE: u16 = 0x0000;
const ADDR_HI_BARE: u16 = 0xFFFF;
// const ADDR_LO_BARE: u16 = 0x0000;
// const ADDR_HI_BARE: u16 = 0xFFFF;
pub const MEMORY_ADDRESS_LO: u16 = ADDR_LO_BARE;
pub const MEMORY_ADDRESS_HI: u16 = ADDR_HI_BARE;
// pub const MEMORY_ADDRESS_LO: u16 = ADDR_LO_BARE;
// pub const MEMORY_ADDRESS_HI: u16 = ADDR_HI_BARE;
pub const STACK_ADDRESS_LO: u16 = 0x0100;
pub const STACK_ADDRESS_HI: u16 = 0x01FF;
pub const IRQ_INTERRUPT_VECTOR_LO: u16 = 0xFFFE;
pub const IRQ_INTERRUPT_VECTOR_HI: u16 = 0xFFFF;
const MEMORY_SIZE: usize = (ADDR_HI_BARE - ADDR_LO_BARE) as usize + 1usize;
// const MEMORY_SIZE: usize = (ADDR_HI_BARE - ADDR_LO_BARE) as usize + 1usize;
// FIXME: Should this use indirection for `bytes`?
#[derive(Copy, Clone)]
pub struct Memory {
pub struct Memory<const MEMORY_SIZE: usize> {
bytes: [u8; MEMORY_SIZE],
}
impl Default for Memory {
impl<const MEMORY_SIZE: usize> Default for Memory<MEMORY_SIZE> {
fn default() -> Self {
Self::new()
}
}
impl<const MEMORY_SIZE: usize> Memory<MEMORY_SIZE> {
pub fn new() -> Memory<MEMORY_SIZE> {
Memory {
bytes: [0; MEMORY_SIZE],
}
}
}
pub trait Bus {
fn get_byte(&mut self, address: u16) -> u8;
fn set_byte(&mut self, address: u16, value: u8);
@ -69,15 +76,7 @@ pub trait Bus {
}
}
impl Memory {
pub fn new() -> Memory {
Memory {
bytes: [0; MEMORY_SIZE],
}
}
}
impl Bus for Memory {
impl<const MEMORY_SIZE: usize> Bus for Memory<MEMORY_SIZE> {
fn get_byte(&mut self, address: u16) -> u8 {
self.bytes[address as usize]
}

View File

@ -1,45 +1,49 @@
extern crate mos6502;
use env_logger::Env;
use std::fs::File;
use std::io::Read;
use mos6502::address::Address;
use mos6502::cpu::CPU;
use mos6502::memory::Bus;
use mos6502::memory::Memory;
const PC_START: u16 = 0x400;
// const MAX_CYCLES: usize = 100000000;
#[test]
fn functional_test() {
env_logger::init_from_env(Env::default().default_filter_or("mos6502=debug"));
let mut f = File::open("test-roms/6502_functional_test.bin").unwrap();
let mut rom = Vec::<u8>::new();
f.read_to_end(&mut rom).unwrap();
let mut cpu = CPU::new();
let mut cpu = CPU::new(Memory::<66560>::new());
cpu.memory.set_bytes(Address(PC_START), &rom);
cpu.memory.set_bytes(PC_START, &rom);
cpu.run();
// cpu.run();
/*
let mut last_pc = PC_START;
loop {
cpu.step();
cpu.single_step();
// Prevent endless loop
if cpu.interconnect.elapsed_cycles() > MAX_CYCLES {
assert!(false, "Took too many cycles to complete");
}
// TODO: We could add cycle count to the CPU struct to check that
// if cpu.interconnect.elapsed_cycles() > MAX_CYCLES {
// assert!(false, "Took too many cycles to complete");
// }
if last_pc == cpu.registers.pc {
if cpu.registers.pc == 0x3367 {
if last_pc == cpu.registers.program_counter {
if cpu.registers.program_counter == 0x3367 {
// Success!
break;
} else {
assert!(false, "Trap detected");
// assert!(false, "Trap detected");
}
}
last_pc = cpu.registers.pc;
last_pc = cpu.registers.program_counter;
}
*/
}