jallen@uxrd1.UUCP (02/04/86)
I have a Sanyo 9" composite video monitor and would like to buy an
Atari 520ST. Can anyone tell me if this monitor will work or do I
have to buy the Atari monitor? If it is just a problem of connectors,
I can fix that. This monitor has been used on IBM Pcs and an Apple ][.
Please mail replies to me. Thanks in advance.
-Jon Allen
USMAIL: Jon Allen
AT&T Communications
Room C50-52A58
30 Knightsbridge Road
Piscataway, New Jersey 08854
UUCP: {...}!ihnp4!acpy01!jallen
PHONE: 201-457-4178jhs@MITRE-BEDFORD.ARPA (02/07/86)
If it is a color monitor it should work just fine. If it is a monochrome monitor, you will probably have to re-tweak the vertical and horizontal hold controls to lock it in, and you may well have to make some changes to the sweep circuits both to lock it in and to get a full-sized picture with the right aspect ratio (horizontal to vertical scale factors). However, I hasten to add that I have never tried this and don't even own an ST (yet). The main problem is that the ST expects a monochrome monitor to run at a 70-Hz frame rate, non-interlaced, and to have 640 by 400 pixels. Standard monochrome monitors run at 60 Hz and I'm not sure of the screen resolution. The 400 should be no problem, as this is an "analog" quantity. But the number of lines is not, and there may be a problem of "folding over" of the picture. Also the geometry may not be right unless you change the gain of one of the sweep channels. If you think I sound like I know what I'm talking about, don't be fooled. Find somebody who really knows what monochrome monitors are all about. -John Sangster jhs at mitre-bedford.arpa
gyuri@CVL.UMD.EDU (Gyorgy Fekete) (02/07/86)
Date: 06 Feb 86 18:14:24 EST (Thu) From: jhs@mitre-bedford.ARPA If it is a color monitor it should work just fine. No, no, no! If I recall correctly, the original requestor said that he had a color monitor with *COMPOSITE* input. Unless the new STs also have composite output, you may have to build a rgb-to-composite circuit. Now there I can help you, if you like.