From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2005-10-31 21:23:50
On Sun, Oct 30, 2005 at 07:53:37PM -0500, Glenn Holmer wrote: > Is this what Brian Bagnall talks about in "On the Edge" (the new C= > history book)? see p. 263, where they're talking about the first > production run: > > "The C64 seemed to have a congenital defect with the video chip. "You > would see light blue sparkles on dark blue, especially after it heated > up", says Bil Herd... "They rewrote the code so that the unused > characters were changed to dark blue. It was sparkling dark blue on top > of dark blue so you couldn't see it." Hmm, why does he say light blue on dark blue? Shouldn't it be white on dark blue? The -01 KERNAL fills the screen with white spaces (regardless of the selected cursor and background color). Only the -03 KERNAL fills it with cursor color (light blue) spaces. The -02 KERNAL fills it with background color (dark blue) spaces. Anyway, this might be true. When I tested my 6567R5 or 6569R1 about nine years ago, I noticed that the sprites are sparkling. It might have been related to the horizontal sprite position or to the temperature of the chip. Marko Message was sent through the cbm-hackers mailing list
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