54 replies to this topic

[davyK]

Yep - same deal with River Raid - need to be a bit more careful and take my time. Works OK now on my Harmony and in Stella...have replaced the ROM on my site and have redownloaded it and tested it on my Harmony and Stella again.....

Apologies again people...


EDIT : Just amended the Demon Attack ASM to use the relative jump instead of the absolute JMP as suggested by Nukey and it seems to work OK - the ROM is uploaded onto my site (and redownloaded and tested in Harmony and Stella!)

It will be some time before I'm good enough to spot these tricks myself Nukey!

Edited by davyK, Sun Apr 22, 2012 3:37 PM.

[PFL]

Thank you very much for sharing the ROM's in the first place. No need to apologise for doing something I couldn't even begin to fathom!

[davyK]

No probs man - but believe me - if you have a programming background and you have some knowledge of assembler this isn't all that hard to do - the real hard work has been done by those creating the disassamblies in the first place...all I am doing is making a few tweaks..hope you enjoy them.

[PFL]

The only programming I've ever done was a bit of BASIC back in the good old days... and I've forgotten all of that!

[davyK]

Its amazing how much better some of these games are at 60Hz - especially an action game like Demon Attack or Asteroids - the increased speed and display actually makes them feel like new games....and it's actually a bit annoying to think I paid £30 for some games back in the early-to-mid 80s for a pretty poor version of them.

Edited by davyK, Mon Apr 23, 2012 12:20 PM.