Hi Team,

I am working on the project ‘mvn-golang’, to add support for the Linux/ARM64 platform.

The build fails on the Linux/ARM64 machine, because of the ‘folgeman/nes’ dependency used. ‘folgeman/nes’ uses ‘glfw’ version 3.1. This version does not support the Linux/ARM64 platform, and hence ‘mvn-golang’ fails to build for ARM64.

Can you please update the ‘glfw’ version to v3.2 or above, as higher versions of glfw are passing for the Linux/ARM64 platform. It will help ‘folgeman/nes’ to work on both LINUX AMD64 and ARM64 platforms.

If required, I will raise the PR with updates.

OS:mint 20.2

pkg-config --cflags -- portaudio-2.0

Package portaudio-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `portaudio-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'portaudio-2.0' found
pkg-config: exit status 1

github.com/go-gl/glfw/v3.2/glfw

/usr/bin/ld: 找不到 -lXxf86vm
collect2: error: ld returned 1 exit status

github.com/go-gl/glfw/v3.2/glfw

In file included from /data/SourceCode/Go/pkg/mod/github.com/go-gl/[email protected]/v3.2/glfw/c_glfw_linbsd.go:24:
/data/SourceCode/Go/pkg/mod/github.com/go-gl/[email protected]/v3.2/glfw/glfw/src/linux_joystick.c: In function ‘_glfwInitJoysticksLinux’:
/data/SourceCode/Go/pkg/mod/github.com/go-gl/[email protected]/v3.2/glfw/glfw/src/linux_joystick.c:224:42: warning: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size 9 [-Wformat-truncation=]
224 | snprintf(path, sizeof(path), "%s/%s", dirname, entry->d_name);
| ^~~~~~~
In file included from /usr/include/stdio.h:867,
from /usr/include/X11/Xcursor/Xcursor.h:26,
from /data/SourceCode/Go/pkg/mod/github.com/go-gl/[email protected]/v3.2/glfw/glfw/src/x11_platform.h:39,
from /data/SourceCode/Go/pkg/mod/github.com/go-gl/[email protected]/v3.2/glfw/glfw/src/internal.h:169,
from /data/SourceCode/Go/pkg/mod/github.com/go-gl/[email protected]/v3.2/glfw/glfw/src/x11_init.c:28,
from /data/SourceCode/Go/pkg/mod/github.com/go-gl/[email protected]/v3.2/glfw/c_glfw_linbsd.go:19:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 12 and 267 bytes into a destination of size 20
67 | return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
68 | __bos (__s), __fmt, __va_arg_pack ());
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Go Version: go version go1.11.2 darwin/amd64
OS: MacOS 10.12.6

When I run go get github.com/fogleman/nes, it failed. And here is the output:

go: finding github.com/fogleman/nes latest
go: downloading github.com/fogleman/nes v0.0.0-20180222220412-5a21a6273289
go: finding github.com/gordonklaus/portaudio latest
go: finding github.com/go-gl/glfw/v3.1/glfw latest
go: finding github.com/go-gl/gl/v2.1/gl latest
go: downloading github.com/gordonklaus/portaudio v0.0.0-20180817120803-00e7307ccd93
go: finding github.com/go-gl/gl latest
go: downloading github.com/go-gl/gl v0.0.0-20181026044259-55b76b7df9d2
go: finding github.com/go-gl/glfw latest
go: downloading github.com/go-gl/glfw v0.0.0-20181213070059-819e8ce5125f
# pkg-config --cflags  -- portaudio-2.0
Package portaudio-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `portaudio-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'portaudio-2.0' found
pkg-config: exit status 1

I have noticed you have the exact same problem I do in my emulator, which is that during the Zelda title screen, the pulse waves cut out too quickly; there is a bit of a gap that should not be there. Just thought I'd point it out in case you can figure out the root cause before I do; I suspect we may have used the same docs to write our APUs, and maybe there is a problem in the documentation. I have determined that in my emu, the pulse length counter hits 0 too quickly, but not sure why.

the controls only controll one player,how to set two kinds keys

Hi,

First of all, great job and you are a wonderful inspiration for every programmer :)

6502 CPU Reference link is broken

I run the following:
go get github.com/fogleman/nes

And get the following output:
# pkg-config --cflags portaudio-2.0
Package portaudio-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `portaudio-2.0.pc' to the PKG_CONFIG_PATH environment variable
No package 'portaudio-2.0' found
pkg-config: exit status 1

Hi I know this is just an awesome pet project, but I have a strage problem I played a game which crashed the music plays but their are there only an background color but now other spirites like the charecter and level objects or the game menu.. Is there any trick to solve this?

Background

Module path is inconsistent with go import path.
GO111MODULE=on, run go get github.com/fogleman/nes:

$ go get: github.com/fogleman/[email protected]: parsing go.mod:
        module declares its path as: nes
                but was required as: github.com/fogleman/nes

Solution

Fix the module path:

Rename the module path to "github.com/fogleman/nes".
https://github.com/fogleman/nes/blob/master/go.mod#L1

module github.com/fogleman/nes
go 1.14
require (
	…
) 

how to build PortAudio in windows 7 ?

My Ubuntu system had upgraded to Ubuntu 15.10, when ran command "go get github.com/fogleman/nes", go-gl can't compile.
@ubuntu:~$ go get github.com/fogleman/nes

github.com/go-gl/glfw/v3.1/glfw

In file included from GoProject/src/github.com/go-gl/glfw/v3.1/glfw/context.go:4:0:
glfw/include/GLFW/glfw3.h:153:21: fatal error: GL/gl.h: No such file or directory
compilation terminated.

github.com/go-gl/gl/v2.1/gl

GoProject/src/github.com/go-gl/gl/v2.1/gl/procaddr.go:52:21: fatal error: GL/glx.h: No such file or directory
compilation terminated.

When I try to install the emulator I'm getting this output:

"# github.com/go-gl/glfw/v3.1/glfw
/usr/bin/ld: no se puede encontrar -lXi
collect2: error: ld returned 1 exit status"

When I look in $GOPATH/bin, nes is not installed.

Thank you.

how can i download portaudio19-dev in my windows 7 machine?

case modeZeroPageX:
    address = uint16(cpu.Read(cpu.PC+1) + cpu.X)

case modeZeroPageY:
    address = uint16(cpu.Read(cpu.PC+1) + cpu.Y)

I have yet to run or play with your code, Golang isn't exactly my domain. However, this doesn't appear to account for wrapping and always being on the zero page. Lets say 0xFF is in cpu.PC+1 and cpu.X is 3. The address returned would be 0x0102 not 0x0002. Same goes for Y.

I'm writing my own 6502 at the moment so please feel free to call me nuts since your emulator seems to work from the screenshots.

From: Emulator 101

Zero-Page Indexed

This works just like absolute indexed, but the target address is limited to the first 0xFF bytes.

The target address will wrap around and will always be in the zero page. If the instruction is LDA $C0,X, and X is $60, then the target address will be $20. $C0+$60 = $120, but the carry is discarded in the calculation of the target address.

Alright, so admittedly this might be a stupid question, but I normally use a windows environment for development and have only recently started using Linux, mostly because it's damn hard to contribute to anything open source when you're running windows. Some of these configuration problems can be a bit baffling, so excuse the newbness.

Following the directions, I installed portaudio without any issue. But when I ran go get github.com/fogleman/nes I get this error:

# github.com/go-gl/gl/v2.1/gl
gocode/src/github.com/go-gl/gl/v2.1/gl/procaddr.go:52:21: fatal error: GL/glx.h: No such file or directory
  #include <GL/glx.h>
                     ^
compilation terminated.
# github.com/go-gl/glfw/v3.1/glfw
In file included from gocode/src/github.com/go-gl/glfw/v3.1/glfw/context.go:4:0: glfw/include/GLFW/glfw3.h:153:21: fatal error: GL/gl.h: No such file or directory
   #include <GL/gl.h>
                     ^
compilation terminated.

It's pretty obvious what's happening here: go-gl can't find the OpenGL headers. Why, I'm not quite sure. Does something in my system need to be pointing to the header files, or is this an actual bug? I'm running Xubuntu 14, if that's relevant.

This guy roasted your project, thoughts?

https://youtu.be/V6VP-2aIcSc

can you make more video on javascript programming and the logic concept that you should be in when programming

MacOSX M2 chip, build failed.

Since you're not saving the carts chr data when it's written to games such as Metroid have a black screen on state load. This same issue would apply to games making use of PRG RAM.

In game F1, the triangle channel will send out some high-frequency waveform, especially after the game is pause. When the triangle channel is forced to mute, it disappears.

Since go has supported android and ios. It's a chance to port it to android or ios.

Can't enjoy the old school Mario music..

Running "go get github.com/fogleman/nes" gives the following, concise output:
Segmentation fault

No bin folder is created under my GOPATH.

I'm running Linux Mint.

After I run go get github.com/fogleman/nes the terminal gives me messages as follow:
package code.google.com/p/portaudio-go/portaudio: Get https://code.google.com/p/portaudio-go/source/checkout?repo=: dial tcp 224.0.0.1:443: connect: address family not supported by protocol family

So I use my browser to https://code.google.com/p/portaudio-go/ and found it was redirected to https://github.com/gordonklaus/portaudio. Then I modify the source code at every place the "coode.google" appear and compiled the program successfully.

Hope you fix this little issue.

Thx for sharing this awesome program.

pkg-config --cflags -- portaudio-2.0

pkg-config: exec: "pkg-config": executable file not found in $PATH

panic: runtime error: index out of range

goroutine 1 [running, locked to thread]:
github.com/fogleman/nes/nes.(_Mapper3).Read(0xc208104000, 0xc208101000, 0x4b58172)
/Users/Blask/.go/src/github.com/fogleman/nes/nes/mapper3.go:24 +0x6d
github.com/fogleman/nes/nes.(_ppuMemory).Read(0xc20802c078, 0xc208281000, 0xc208283976)
/Users/Blask/.go/src/github.com/fogleman/nes/nes/memory.go:84 +0x6e
github.com/fogleman/nes/nes.(_PPU).fetchLowTileByte(0xc2082c6000)
/Users/Blask/.go/src/github.com/fogleman/nes/nes/ppu.go:376 +0x80
github.com/fogleman/nes/nes.(_PPU).Step(0xc2082c6000)
/Users/Blask/.go/src/github.com/fogleman/nes/nes/ppu.go:598 +0x374
github.com/fogleman/nes/nes.(_Console).Step(0xc2080f2000, 0x2)
/Users/Blask/.go/src/github.com/fogleman/nes/nes/console.go:48 +0x66
github.com/fogleman/nes/nes.(_Console).StepSeconds(0xc2080f2000, 0x3f9118ef3a350400)
/Users/Blask/.go/src/github.com/fogleman/nes/nes/console.go:69 +0x4d
github.com/fogleman/nes/ui.(_GameView).Update(0xc20802e410, 0x40239eb0b3919264, 0x3f9118ef3a350400)
/Users/Blask/.go/src/github.com/fogleman/nes/ui/gameview.go:68 +0x125
github.com/fogleman/nes/ui.(_Director).Step(0xc20802a280)
/Users/Blask/.go/src/github.com/fogleman/nes/ui/director.go:53 +0x76
github.com/fogleman/nes/ui.(_Director).Run(0xc20802a280)
/Users/Blask/.go/src/github.com/fogleman/nes/ui/director.go:69 +0x43
github.com/fogleman/nes/ui.(_Director).Start(0xc20802a280, 0xc20802a180, 0x3, 0x4)
/Users/Blask/.go/src/github.com/fogleman/nes/ui/director.go:64 +0xbf
github.com/fogleman/nes/ui.Run(0xc20802a180, 0x3, 0x4)
/Users/Blask/.go/src/github.com/fogleman/nes/ui/run.go:62 +0x5a4
main.main()
/Users/Blask/.go/src/github.com/fogleman/nes/main.go:19 +0x138

goroutine 17 [syscall, locked to thread]:
runtime.goexit()
/usr/local/Cellar/go/1.4.2/libexec/src/runtime/asm_amd64.s:2232 +0x1

goroutine 18 [syscall, locked to thread]:
runtime.goexit()
/usr/local/Cellar/go/1.4.2/libexec/src/runtime/asm_amd64.s:2232 +0x1

after I change the rom filename to english letter only, it works

Please add joystick support so two player is possible.

I want to know how you implement mappers? Could you give me some materials. I'm curious about it.

$ go get github.com/fogleman/nes
$ nes
2015/03/23 16:38:28 Usage: go run main.go rom_file.nes
$ nes ~/Downloads/Tetris.nes
2015/03/23 16:40:16 unsupported mapper: 65
$

I am ambivalent about the usage message, it works for one developer situation but not for the full compiled one, which perhaps should be the norm?

Sadly I have no idea what mapper 65 is :-(

been trying to get this set up and going. I'm rather new to all this. anyway I run into this when I use the command.

go get github.com/fogleman/nes

go: github.com/fogleman/nes: invalid github.com import path "github.com/fogleman"

like I said I'm rather new and probably doing something completely wrong.

Hi,

I wonder if it would be difficult to add USB Controller Support for an USB SNES Gamepad so I could run this on my Raspberry Pi and have an sort of Go based NES Classic MINI alternative..

Hello Michael,

I am really impressed with your implementation of nes emulator, so much so that I'm trying to implement my own (Swift + Metal). Was playing with your implementation, however after the update to go 1.6 I am no longer able to due to runtime error.

The problem exists for go version go1.6.2 darwin/amd64 and here is the stack trace.

panic: runtime error: cgo argument has Go pointer to Go pointer

goroutine 1 [running, locked to thread]:
panic(0x44e4660, 0xc820111a30)
    /usr/local/opt/go/libexec/src/runtime/panic.go:481 +0x3e6
github.com/gordonklaus/portaudio._cgoCheckPointer1(0x43ed9a0, 0xc820096080, 0x0, 0x0, 0x0, 0x43ccde0)
    ??:0 +0x4d
github.com/gordonklaus/portaudio.OpenStream(0x0, 0x0, 0x0, 0xc82006a360, 0x2, 0xd5d4a5, 0x40e5888000000000, 0x0, 0x0, 0xc820111a00, ...)
    /Users/pawel/go/src/github.com/gordonklaus/portaudio/portaudio.go:504 +0x3d1
github.com/fogleman/nes/ui.(*Audio).Start(0xc8200c9340, 0x0, 0x0)
    /Users/pawel/go/src/github.com/fogleman/nes/ui/audio.go:24 +0x192
github.com/fogleman/nes/ui.Run(0xc820111980, 0x1, 0x1)
    /Users/pawel/go/src/github.com/fogleman/nes/ui/run.go:33 +0xce
main.main()
    /Users/pawel/go/src/github.com/fogleman/nes/main.go:19 +0x13d

Kind regards,
Pawel