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- Path: news.wlv.ac.uk!not-for-mail
- From: cm6700@ccub.wlv.ac.uk (G.Nath)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: VGA monitors and A1200 - Help
- Date: 4 Jan 1996 15:27:41 -0000
- Organization: University of Wolverhampton, U.K.
- Message-ID: <4cgrld$gc9@ccub.wlv.ac.uk>
- References: <4cc803$jbs@lyra.csx.cam.ac.uk>
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- tw116@cus.cam.ac.uk (T. Wright) writes:
-
- >VGA uses horizontal rate of 31.5 kHz
- Yes it does
-
- >Normal amiga uses about 15 kHz - so can't use this
- Cannot use this on the VGA monitor
-
- >Productivity screen uses 31.5 kHz - so can always use this? if software
- >supports this mode or runs on Workbench
- Yes, but the screensizing and overscan is a bit "inflexible"
- better to go dblPAL/NTSC is you can.
-
- >DblPal or DblinterlacePal (or NTSC) is 27 kHz - so can I use this, or
- > does it depend on the VGA monitor? Does the monitor have to sync down
- > to this (very few do, from what I have seen of adverts)? Does VGA only
- > always solve this (says manual), or under which circumstances?
-
- It does depend on the monitor.
- From memory "VGA only" will raise the 27.???kHz to approx 31.5kHz
- by decreasing the width(?) (hey, can someone confirm this please? )
-
- >Mode promotion doubles custom screen modes to 27kHz (through OS) - so as
- >above?
-
- Doubles 15kHz screens to whatever your WB screenmode is.
- Check out ModePro on aminet for a really flexible mode promotion
- system.
-
- >And do you kill/damage the monitor/Amiga if you send an unacceptable
- >screen mode?
-
- I asked something similar a few months ago and was told that
- modern monitors are quite well protected if your machine
- gurus at 15khz.
-
- >Is the above true, and can anyone answer my questions?
- >Trevor
-
- GVN
- --
- Daub your mouth with honey and you will get plenty of flies.
-