mirror of
https://github.com/henrikpersson/potatis.git
synced 2025-04-02 10:32:09 -04:00
c7ad54c42a
nestest went from 5s to ~1.9s by: - removing some dyn dispatch - const instruction map - opcode unrolling - removing uneccessary reads
80 lines
2.4 KiB
Rust
80 lines
2.4 KiB
Rust
use std::fmt::Write;
|
|
use std::fs::File;
|
|
use std::io::BufRead;
|
|
use std::io::BufReader;
|
|
|
|
use mos6502::cpu::Flag;
|
|
use mos6502::cpu::SP;
|
|
|
|
mod common;
|
|
|
|
// cat nes/roms/nestest.log | awk '{print substr(,49)}' > nes/roms/nestest_cycles.log
|
|
// cat nes/roms/nestest.log | awk '{printf "%s ",substr(,0,4); print substr(,49)}; ' > nes/roms/nestest_cycles.log
|
|
|
|
// http://www.qmtpro.com/~nes/misc/nestest.txt
|
|
// This test program, when run on "automation", (i.e. set your program counter
|
|
// to 0c000h) will perform all tests in sequence and shove the results of
|
|
// the tests into locations 02h and 03h.
|
|
const NESTEST_ENTRY_POINT: u16 = 0xc000;
|
|
const NESTEST_SUCCESS: u16 = 0xc68b; // Here it starts writing to APU, which is not yet implemented.
|
|
const NESTEST_RES_BYTE2: u16 = 0x0002;
|
|
const NESTEST_RES_BYTE3: u16 = 0x0003;
|
|
|
|
const ENABLE_TEST_CYCLES: bool = false;
|
|
|
|
#[test]
|
|
fn nestest() {
|
|
let mut nes = common::setup("../test-roms/nestest/nestest.nes".into(), false);
|
|
|
|
let logf =
|
|
File::open("../test-roms/nestest/nestest_cycles.log").expect("failed to read test log");
|
|
let log: Vec<String> = BufReader::new(logf).lines().map(|s| s.unwrap()).collect();
|
|
|
|
// nes.machine().debugger().enable();
|
|
|
|
// nestest startup state
|
|
// reset vector points to 0xc004 - but that's for graphic mode, we want automation at 0xc000
|
|
nes.cpu_mut().set_pc(NESTEST_ENTRY_POINT);
|
|
// nestest startups with these flags... Maybe the CPU should as well? or only for this weird test?
|
|
nes.cpu_mut().flags.remove(Flag::B);
|
|
nes.cpu_mut().flags.insert(Flag::UNUSED);
|
|
nes.cpu_mut().flags.insert(Flag::I);
|
|
nes.cpu_mut().regs[SP] = 0xfd;
|
|
|
|
nes
|
|
.debugger()
|
|
.watch_memory_range(NESTEST_RES_BYTE2..=NESTEST_RES_BYTE3, |result| {
|
|
assert_eq!(
|
|
result[0], 0x00,
|
|
"nestest reports error code on byte 2.. check README"
|
|
);
|
|
assert_eq!(
|
|
result[1], 0x00,
|
|
"nestest reports error code on byte 3.. check README"
|
|
);
|
|
});
|
|
|
|
let mut i = 0;
|
|
loop {
|
|
let mut sts = String::new();
|
|
write!(&mut sts, "{:?}", nes).unwrap();
|
|
|
|
nes.tick();
|
|
if log[i] != sts && ENABLE_TEST_CYCLES {
|
|
// nes.dump_backtrace();
|
|
panic!(
|
|
"nestest cycle test mismatch!\n\nExpected:\t{}\nActual:\t\t{}\n",
|
|
log[i], sts
|
|
);
|
|
}
|
|
|
|
i += 1;
|
|
|
|
if nes.cpu().pc == NESTEST_SUCCESS {
|
|
break;
|
|
}
|
|
}
|
|
|
|
let expected_ticks = 26513;
|
|
assert_eq!(expected_ticks, nes.cpu_cycles(), "wrong tick count");
|
|
}
|