[Info] In some demos and games, VICE does not display some lines at the top/bottom of the screen

The information in this article applies to the following versions of VICE:

all versions

SYMPTOMS

Looking at the VICE output of some demos and/or games, you notice that there are lines at the top or at the bottom of the screen which can are displayed on a real machine, but not on VICE.

NOTE

This only happens to programs which "open" the border for displaying something.

CAUSE

This is a feature. There is no definite last line as every TV set has a different one. We have chosen a compromise. The screen could be extended, but then programs written on a TV screen showing fewer lines could show garbage at the bottom, because the programmer has never seen them.

Probably we will have some settings to adjust such things in the future, but don't hold your breath.

SOLUTION

None yet.

STATUS

This document is for information purpose only. The behaviour reported is intentional in the VICE versions listed at the beginning of this article.

REVISION

September 29, 2003: Original release of this document

Last Reviewed: September 29, 2003