From: barrett@iastate.edu (Marc N Barrett)
Subject: Re: A4000 ?
Organization: Iowa State University, Ames, IA
Date: Wed, 7 Oct 1992 06:34:12 GMT

In article <9210062217.AA12160@judy.indstate.edu> arc@JUDY.INDSTATE.EDU (Arc Wave) writes:
>Are the Amiga 4000 screens going to have scan lines?

   Most of the A4000 screens will have scan-lines.  The A4000 does not have
a display enhancer like the A3000, which will remove the flicker and scan lines
from most of the resolution modes.  The A4000 merely adds two modes -- DblPAL
and DblNTSC -- which are non-interlaced versions of the interlaced PAL and
NTSC modes.  But if a program tries to open a screen in a standard mode, you
will get all of the scanlines and flicker just as if the screen were being
opened on an Amiga 500.

   I can personally attest, BTW, that the Super72 800x600 mode DOES have
scan lines.

>I hate scan lines!  I don't mind if certain video modes use this, but
>is there a mode which eliminates scan lines?  Flicker? I have no 
>problem with flickering screens (well).

   The following message (posted to hardware) best explains the situation
with the Amiga 4000:


>Article 27413 of comp.sys.amiga.hardware:
>Path: news.iastate.edu!ux1.cso.uiuc.edu!sdd.hp.com!nigel.msen.com!math.fu-berlin.de!unidui!flyer!easix!tron.gun.de!ludwig
>From: ludwig@tron.gun.de (Ludwig Kamphenkel)
>Newsgroups: comp.sys.amiga.hardware
>Subject: I want 736x554 NO-Interlace
>Message-ID: <1BC216D8TA@tron.gun.de>
>Organization: TRON Public Mailbox, Neurath, Germany
>Date: Sun, 4 Oct 92 02:24:00 +0100
>Lines: 21
>
>Yo!!
>
> This question is mainly to the C= developers. I just got my A4000 and I am
>allready mad, because there is still interlace. Is C= going to comme out
>with a flickerfixer (displayenhancer) for the A4000 in about 2 weeks or
>so?? I had a 736x554 workbench on my A500+ thanks to a flickerfixer but now
>I am back to interlace :(I do not want an answer like: 'user the Double Pal
>screenmode' because I am using it. Works great exept that most programs
>with open an own screen are using interlace. This is particular annoying
>when using PageStream (that's why I had a displayenhancer in the first
>place) Other than that I don't realy know how healthy it is for my monitor
>(Mitsubishi EUM-1471A) to swich between two frequences all the time. Since
>I payed about $3000 (DM 4400) I think I got a right to know (hopefully C=
>doesn't think otherwise)
> BTW could it be possible to integrate the displayenhancer on the upcomming
>Zorro-III SCSI controller IF a displayenhancer can be made using Zorro-III.
>
>          Enjoy...
>
>                  Ludwig
>-- THE ANSWER V2.03


> .___________________________________________________________________________.
> | Arc Wave, real life: Paul Cardwell | INet Address: arc@judy.indstate.edu  |
> |----------\\-----//--------------------------------------------------------|
> | ----     \\\^ ^///     "Amiga, the wild side of power computing."    ---- |
> |  -----    \\|.|//                Amiga/UNIX/C Programmer           -----  |
> `------------\\-//----------------------------------------------------------'

---
| Marc Barrett -MB-  |  email: barrett@iastate.edu
--------------------------------------------------
Newsgroups: comp.sys.amiga.misc