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package nes
import (
"crecher.net/gones/v2/cart"
"crecher.net/gones/v2/cpu"
)
type Console struct {
CPU *cpu.CPU
Cart *cart.Cartridge
RAM [0x800]uint8
// PPU, APU, controllers once they exist
cycles uint64
}
func New(c *cart.Cartridge) *Console {
n := &Console{Cart: c}
n.CPU = cpu.NewCPU(n)
n.CPU.Reset()
return n
}
func (n *Console) Step() int {
cycles := n.CPU.Step()
n.cycles += uint64(cycles)
return cycles
}
func (n *Console) StepFrame() {
// 29780 is roughly one frame:
// ~ 1789773 cycles per sec
// ~ 60.1 fps
// 1789773 / 60.1 = 29779.916...
const cyclesPerFrame = 29780
for done := 0; done < cyclesPerFrame; {
done += n.Step()
}
}
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