shaul@cheshire.columbia.edu (Shaul Lev) (11/19/86)
Newsgroups: comp.sys.cbm May be I'm asking a question which was answered before, but since I'm new in the net I still have my problem. I want to know if there is any possibility to see the letters printed by GEOS on a composite color monitor more clearly. In the ads or even on the C64C box the letters are very sharp, while on my monitor I have to guess what is written behind the icons. Nothing was said by Commodore that GEOS is only for monochrome or RGB (which is useless with the 64C), so I expect to enjoy working with GEOS instead of trying to read the screen with a limited success. Anyone who has a solution please tell me. Thanks Shaul.
shaul@cheshire.columbia.edu (Shaul Lev) (12/08/86)
Subject : GEOS and composite video.
I would like to know if there is any possibility to see letters printed by GEOS
on a composite color monitor more clearly. In the ads or even on the C64C
box the letters are very sharp, while on my monitor I have to guess what is
written below the icons. Nothing was said by Commodore that GEOS is only
for monochrome or RGB (which is useless with the 64C), so I expect to enjoy
working with GEOS instead of trying to read the screen with a limited success.
Anyone who has a solution please let me know.
Thanks
Shauljanh@hplsla.HP.COM (Jan Hofland) (12/10/86)
[] I, too, have found the composite video text display marginal when using GEOS. My solution turned out to be a hardware modification to the C64. My machine is an early version (version 1, I think). I noticed that the more recent vintages use video interface circuits built into the RF modulator, rather than the transistors, resistors, and capacitor circuitry mounted directly on the pc board. What I did was to build a circuit that goes between the VicII chip and the DIN video output connector that duplicates what is happening inside the newer version RF modulator. The most significant differences are the use of a locally regulated power source and separate emitter followers for the composite video, lumenance, and chroma outputs. Jan Hofland Hewlett Packard Lake Stevens Instrument Division 8600 Soper Hill Road Everett, Wa. 98205 ..hplabs!hp-pcd!hplsla!janh