Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!cbmvax!hood From: hood@cbmvax.commodore.com (Scott Hood) Newsgroups: comp.sys.amiga.hardware Subject: Re: A2320 Message-ID: <18435@cbmvax.commodore.com> Date: 1 Feb 91 16:54:43 GMT References: <1991Jan29.054742.18143@cs.mcgill.ca> <3898@rwthinf.UUCP> <18245@cbmvax.commodore.com> <3901@rwthinf.UUCP> <189bc930.ARN13b6@venus.UUCP> Reply-To: hood@cbmvax.commodore.com (Scott Hood) Organization: Commodore, West Chester, PA Lines: 56 In article <189bc930.ARN13b6@venus.UUCP> cbmvax.commodore.com!cbmehq!cbmger!venus!wfaust writes: >In article <3901@rwthinf.UUCP>, Helmut Neumann writes: > >> Special features of the >> Macro-Systems de-interlacer is a dynamic screen-repeat-rate (i hope you >> understand what i mean), if you use a 640x400 ntsc resolution it is 70 hz. It >> only depends on the chosen number of lines. When tou use pal overscan it is >> the normal 50 Hz. The second feature is an integrated stereo amplifier, so you >> can add the speakers you miss in your multisync. The disadvantage is that it >> can not handle productivity and leaves out every second pixel at superhires. >> But productivity is really useless when you have this card, because the refresh rate is also about 60 Hz at productivity resolution and you are not limited in >> colours, not to mention that 4 colour hires-interlace leaves some cycles for >> the processor when accessing chip-ram compared to productivity. > >Some things are stated wrong: > >1. What you mentioned as "dynamic screen-repeat-rate" is also >possibel on an A2320 card without any change!! The utility wich >does this nice frequency job is called "RefreshTool" and comes >with MacroSystems flickerfixer. As far as I know, you can also buy >this program extra (should be something arround $10-$20). It's not >KS 2.0 compatible and has a really ugly user-interface in my >opinion, but does it work... > >2. What you mentioned as disadvantage (superhires...) for the >MacroSystems deinterlace card is also true for the A2320 :-( >(that's why you have the switch on an A3000!) > >So, after all... the main difference is the stereo amplifier and >the price! >----- >Wolf Faust UUCP:cbmvax.commodore.com!cbmehq!cbmger!venus!wfaust >Tel: (+49)69 5486556 FIDO: 2:243/43.5 Wolf, What do you mean when you say "dynamic screen-repeat-rate"? The A2320 is the only display enchancer card that I know of that has a scan-double mode of operation when in non-interlaced Amiga display modes. This means that the A2320 just does a line repeat, instead of a de-interlace function. This operation then does not induce any motion artifacts with rapidly moving objects (good for games, animations, etc.) that would be induced if the device tried to de-interlace the data all the time (i.e. just like the MicroWay FlickerFixer, TM). This is also automatic and requires no software. The price of 690 DM is really high! I guess all those taxes, import duties, etc., all have an effect! The SUGGESTED price in the USA is $299 list. Hope this helps, Scott Hood -- -- Scott Hood, Hardware Design Engineer (A3000 Crew), Commodore-Amiga, Inc. {uunet|pyramid|rutgers}!cbmvax!hood hood@cbmvax.cbm.commodore.com "The views expressed here are not necessarily those of my employer!"