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Nukey Shay

Member Since 24 Jun 2001
OFFLINE Last Active Today, 6:10 AM

Posts I've Made

In Topic: Supercharger conversion hacks...

Today, 3:59 AM

All of them are here IIRC ("all" meaning non-hack, pirate, or homebrew). I only did a few pirates, since they were on the SGANB CD. I can't recall if I missed any originals that are non-compatable. But I no longer have any free time to do them if there are.

In Topic: GET and PUT source (Compute magazine)

Tue Feb 7, 2012 5:44 AM

No offense, but it's useless without doing positioning as well (i.e. to work with individual bytes in random-access files). To read or write files in their entirety, it's speedier to use the SIO routine. After opening the file, flow value ($07 for read, $0B for write) is placed in $352, start address goes in $354/5, length in $358/9. Load A and X with $10, then JMP $E456.

In Topic: The Official 2600 Easter Egg and Programming Mysteries Thread

Fri Jan 13, 2012 8:22 PM

Like other early "complex" games, the display kernel is skipped altogether during the routine. Although this does speed up the process at least twice as much to run the routine in question, a more-important advantage is that the program does not need to use any temporary ram memory storage to draw the display...so that can be utilized here instead. This also makes the display less-confusing to a player...some games may be altering other display variables as it "thinks" (Video Chess), or make the game more of a challenge (Maze Craze's paths are done in reverse - which would reveal the correct path as someone watches it being generated).


The color-shift deal was put there only because it doesn't "cost" anything to do it...just update COLUBK with whatever value happens to be sitting in a register once in a pass or so (and serve as a visual reminder that the game has not crashed...I guess).

In Topic: Pacman 2600 discussion page

Mon Jan 2, 2012 3:50 AM

Correction:
Debro's homebrew uses DCP and triple-NOP in the display kernel. LAX is used elsewhere.

In Topic: NTSC vs PAL goodset rom question

Wed Dec 28, 2011 12:26 AM

View PostSoulBlazer, on Mon Dec 19, 2011 8:05 PM, said:

View PostRom Hunter, on Mon Dec 19, 2011 6:01 PM, said:

Not old era (1977-1992).

Have to draw the line somewhere, otherwise I'll be lost in oblivion.

8)

I'm confused, didn't those games come out between 77 and 92?
Not the converted (i.e. region hack) versions they are posting about.

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