blob: e34ca9af2017e626ff56ee5c2a01a17ce950dc65 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
#include "nes/ref/nes.hh"
#include "nes/ref/mapper.hh"
#include "nes/util/display.hh"
#include "nes/util/rgb.hh"
#include "nes/util/snapshot.hh"
#include <iostream>
namespace nes::ref
{
nes::nes(cartridge cartridge, display& display)
: cartridge_{ std::move(cartridge) }
, display_{ display }
, mapper_{ mapper::select(cartridge_) }
, ppu_{ cpu_, mapper_, display_ }
, cpu_{ ppu_, mapper_, controller_1_, controller_2_ }
{
if (!cartridge_.is_valid())
{
std::cerr << "Cartridge not valid!" << std::endl;
std::abort();
}
display_.clear(rgb{});
display_.switch_buffers();
display_.clear(rgb{});
}
auto nes::step(std::chrono::microseconds const delta) -> void
{
step(cycle_count::from_duration(delta));
}
auto nes::step(cycle_count const delta) -> void
{
current_cycles_ += delta;
while (cpu_.get_cycles() < current_cycles_)
{
cpu_.step();
while (ppu_.get_cycles() < cpu_.get_cycles())
{
ppu_.step();
}
}
}
auto nes::step_to_nmi() -> void
{
while (cpu_.is_nmi_pending())
{
cpu_.step();
while (ppu_.get_cycles() < cpu_.get_cycles())
{
ppu_.step();
}
}
while (!cpu_.is_nmi_pending())
{
cpu_.step();
while (ppu_.get_cycles() < cpu_.get_cycles())
{
ppu_.step();
}
}
}
auto nes::get_snapshot() -> snapshot
{
auto res = snapshot{};
res.sram = std::vector(cartridge_.get_ram(), cartridge_.get_ram() + cartridge_.get_ram_length());
cpu_.build_snapshot(res);
ppu_.build_snapshot(res);
return res;
}
} // namespace nes::ref
|
