Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!uakari.primate.wisc.edu!uflorida!gatech!rutgers!cbmvax!hood From: hood@cbmvax.commodore.com (Scott Hood) Newsgroups: comp.sys.amiga.hardware Subject: Re: Ecs Message-ID: <16016@cbmvax.commodore.com> Date: 21 Nov 90 15:20:52 GMT References: <1294@iceman.jcu.oz> Reply-To: hood@cbmvax.commodore.com (Scott Hood) Organization: Commodore, West Chester, PA Lines: 65 In article <1294@iceman.jcu.oz> glmwc@iceman.jcu.oz (Matthew W Crowd) writes: > >I posted this not long ago but still have a question, >my email didn't get though so here it is....... > >>>Is the video signal from the video port always 31.5kHz with >>>the ECS installed? > >>In reply: > >>2. No, ECS is a superset of the original chip set - anything they can do >>we can do(unless Victor and I broke something and nobody told us about >>it :-) !!!). Basically ECS involves three things: > 1.) programmability of timing registers that used to be > hard-wired(horizontal total,start and end of blanking,etc.) > 2.) creation of a SHRES pixel resolution(35nS) > 3.) additional genlock support(border transparency control,color > table and bitplane transparency,etc.) > > Using 2.0 preferences you can set horizontal scan rate to 15 or > 31 KHz. For applications, horizontal and frame frequency are > programmable over a large range of values. > >QUESTION: > >I'll try and make this as simple as possible:- > >SETUP = Amiga 2000 + ECS + WB2.0 > >I definately want to get a VGA (not Multisync) monitor BUT >WILL I BE ABLE TO USE THE MONITOR WITH ALL SCREEN MODES? > >eg. Boot up in normal 640x256 or 320x256 modes. Not just Productivity > all the time. (Note that the VGA Monitor has a constant scan rate > of 31kHz. > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Amiga : /// | Matthew Crowd > There /// | Research Assistant > is no \\\/// | James Cook University > substitute \XX/ | email : > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= No, you will not. You will only be able to use the Productivity display mode is you have a VGA monitor and not a multisync monitor. However, if you have the A2320 display enhancer, then you don't need the ECS chip set and you CAN use a VGA monitor for all screen display modes. I am assuming that you have an NTSC machine. Some VGA monitors will not work well with PAL machines and the A2320 because they are set for 60Hz veritcal retrace and the PAL machines will produce a 50Hz vertical retrace signal, thus only use a VGA only monitor with NTSC based machines if you have the A2320. It is a little cheaper. (BY the way, Commodore sells a VGA only monitor called the 1930 which can be used in BOTH NTSC and PAL machines with the A2320 installed as well as our PC compable line of computers for less money than our 1950 monitor.) 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!"