21th November 2008

I've updated Minus4j some more with some pretty neat changes, the major one being being sound - at LONG last! While compatability is getting better, but this update is mainly for things like sound, missing keys, and better joystick support. I've also added some auto detection of RUN commands that are attached to a filename. Many games are called things like freek_out_g2a00.prg, so this update will pick up the g2a00 part and autorun for you. Still, heres the list so enjoy!

Version 1.5

  • Added a paramater for the initial frameskip value.
  • Removed software screen scale and now use built in JAVA one - should be MUCH faster.
  • Added ESCAPE key (Escape)
  • Added RUN STOP key - ` (backwards apostrophe, usally beside the 1 key)
  • Added the * key (numpad)
  • Added undocumented opcode LAS,Y ($BB) command. Danger Diamonds now runs.
  • Minus4j now picks up sys0000 style RUN commands from the filename. So games like "mercenary_sys23552.prg" now work without a seprate RUN command.
  • Minus4j now picks up g12AB style RUN commands from the filename. So games like "mercenary_g5C00.prg" now work without a seprate RUN command.
  • TED Sound!!!
  • TED Samples!!
  • New "sound" paramater. sound=off or sound=on are valid. ON by default.
  • You can now press F7 while running to toggle sound (mute).
  • Added VOLUME control register.
  • If joystick is enabled, CursorKeys and Space key is disabled.
  • "INSERT" now does a soft reset.
  • Emulator now shuts down better.




  • 8th November 2008

    I've updated Minus4j a bit so that it now has Inverse and Flash modes, and so that it runs more games. I've also added support for SOME vertical scrolling. This is basically a port back from minus4w so things should be more stable now. Mercenary and Commando (2 long standing problem games) now both work. However there are still CPU bugs in there that need to be delt with. I've also added a new paramater joy which lets you enable/disable joysticks on start up. If you have any questions, just let me know. I dont know how much this will continue to get updated, but it'll get bits every now and then I suspect.

    9th May 2008

    I have fixed a couple of bugs in both Minus4 and SNasm. New video drivers appear to have killed minus4, so I've now fixed this. If its crashing all the time, then this should solve it. I've fixed a couple of instructions on SNASM that were spelt wrong (whoops!) in 65816 mode so thats been uploaded too. So grab what you need in the downloads section.

    30th November 2007

    I decided to finish off the 65816 support in SNASM, so you can go and download the new version if you feel so inclined. I have also fixed a few bugs in the last release, so its worth the download if you use it.

    28th November 2007

    Theres a few new versions of things!!! Minus4 has actually been updated quite a bit, although only in a development sense.
    The debugger has improved a lot and I've added a realtime profiler!
    Snasm has also update a bit, and now sports some 65816/65c02 support, along with some new undocumented ops and bug fixes.
    I've also released the NEW source to Minus4w (complete with profiler) for you to mess around with.
    So there you go! Christmas DOES come early!

    1st November 2006

    Theres a new version of the uploader (V1.3) which can now target C64's as well. You can now also specify the port address for the parallel port for non-standard ports.

    8th October 2006

    I've uploaded a new version of my 6502 macro assembler which you can find on the downloads page for those that fancy a play. It's got a few features and a couple of bug fixes. Enjoy

    14th December 2005

    New version of the uploader. It will now run many more programs. BASIC start and end address are now filled out. You can also autorun the program, or send a custom command to be executed after download. The Plus4 side has also shrunk vy 13 bytes - even with all the additions. Get it in the downloads section.

    3rd December 2005

    I've added a program to download stuff to the plus/4 in the downloads section. You'll need to build a cable for this though but it does allow you to view all the prg files from the net on an actual plus/4. Enjoy.

    23rd November 2005

    A new record! 2 Years and more!! Any well... theres a new version of Minus4j that supports proper framerates and display scaling... I just did this in passing, and its not very well tested... so get it while you can.

    3rd September 2003

    Wow... Long time.... oh well... such is life. Ive decided to release the source to the current version of minus4w. Its probably not gonna change now, if I ever go back to it, I'll be using the newer one Ive started. So, its there.... get it and enjoy!

    31st August 2002

    I have touched up the Audio on minus4w, it now produces slightly cleaner sound, less clicks and a bit louder. The debugger has a couple of new features too, get it from the Downloads area, and checkout the about section to find out more.

    10th August 2002

    I have now fixed SID sound output on minus4w. You can also now record SID sound using the -R command line option.
    Get it from the downloads section.

    29th July 2002

    A minor update to the last WINDOWS version.Fullscreen mode was knackered, so thats fixed. Ive also added save screen shot to .BMP .
    Get it from the downloads section.

    21st July 2002

    Wow! A new record in updates... Oh well... better late than never I guess.... V2.2 for windows is now out, look in the about section for whats new.

    8th June 2001

    Been a while since the last update...So heres a small update to keep you going! Look at the ABOUT section on MINUS4W for more info.

    5th Nov 2000

    Well, the new site is on line, and ready !!! Hope you like it. This site is dedicated to my Minus4 emulator, so if your after any links, then head on over to http://www.plus4.org Find out about my emulators under ABOUT, and download them at the DOWNLOADS section.

    Any feedback, just let me know at mike@dailly.org