Program compatibility

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Revision as of 22:06, 26 July 2015 by Tepples (talk | contribs) (APU DMC namin' and shamin')
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This page describes defects in homebrew games. For defects in games prior to 1996, see Game bugs.

Many older programs that are passed off as NES programs were tested exclusively with older, less accurate emulators, and do not work on a Nintendo Entertainment System.

Compatible programs

See also: Projects

As the PowerPak became more widespread, it became easier for programmers to test a daily build on an NES. Games developed in the PowerPak era include

Almost compatible programs

Title Problem Description
Final Fantasy II (English translation, Neo Demiforce) Version 1.02 and 1.03 — graphic glitches during intro, no text during prologue (blue screen without text). Caused by incorrect setting of nametables in PPUCTRL, misuse of PPUSCROLL, and reading of PPUSTATUS to detect VBlank. The issue was discussed in some detail; the author has revamped the entire intro as of March 2015 (not yet released).
LAN Master by Shiru APU DMC causes byte deletions when reading back nametables from $2007 if a dialog is being displayed during a drum hit.
Blurred Lines 2048 by raydempsey APU DMC causes byte deletions when reading controllers during speech samples, causing spurious right presses.

Incompatible programs