Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!lll-crg!rutgers!cbmvax!grr From: grr@cbmvax.cbm.UUCP (George Robbins) Newsgroups: comp.sys.amiga Subject: Re: EGA? CGA? gortklaatuGA? (Amiga compatable color monitors) Message-ID: <1054@cbmvax.cbmvax.cbm.UUCP> Date: Thu, 4-Dec-86 02:22:24 EST Article-I.D.: cbmvax.1054 Posted: Thu Dec 4 02:22:24 1986 Date-Received: Fri, 5-Dec-86 03:02:34 EST References: <5243@ukma.ms.uky.csnet> Reply-To: grr@cbmvax.UUCP (George Robbins) Organization: Commodore Technology, West Chester, PA Lines: 52 Keywords: amiga, ibm, pgs, taxan In article <5243@ukma.ms.uky.csnet> sean@ukma.ms.uky.csnet (Sean Casey) writes: >As you may know from a previous posting of mine, I am in the process >of evaluating color monitors for the Amiga. I want better text definition, >and that means going to a monitor with higher resolution and/or dot pitch. > >I've already gotten information from PGS and Taxan, and I'm not sure what >is usable. For example, Princeton Graphics Systems' top of the line >monitor is the SR-12P. This monitor is designed to be compatable with >the IBM Professional Color Graphics adaptor. Here's the specs: > > Monitor: Princeton Graphics Systems SR-12P > Input: Analog video .6vp-p RGB positive, negative TTL, > composite sync > Resolution: 640x480 (non-interlaced) > Colors: 4096 > Bandwidth: 30 MHz > Scan Freq: Horizontal 30.48 KHz, Vertical 60 Hz > Inp connector: 9 pin (DB9) > Price: Sugg retail $999, I have seen it for $600 mail order > >I have no idea if this is useable or not. Where I work, we have a >Masscomp RGB monitor (1024x1024 256 colors). It has exactly four coax >inputs: Red, Green, Blue, and Sync. Why would you need nine? > >Does anyone have any idea whether this would be compatable? Can you >give me some technical info on what kind of video out the Amiga produces? >Can it generate output for a standard TV set? > >Sean NO!! This is not useful... You want: Analog Video, Composite Sync (or Negative TTL) You need: Horizontal ~15Khz, Vertical 30/60Hz Interlaced You can use CGA compatible monitors or EGA/PGA multisync monitors *IFF* you invert the Horizontal and Vertical Sync *OR* they have an inverted sync control switch. The nine pins on the IBM compatible monitor include 2 grounds, 4 RGBI signals, 2 syncs and a spare - EGA has something like 1 ground, 2 syncs and 6 RrGgBb signals - note that your Masscomp monitor actually has 8 connections if you count the grounds... Oh yeah - the Amiga produces output along the lines of various NTSC and EIA standards, not exact, but good enuf for many purposes. -- George Robbins - now working for, uucp: {ihnp4|seismo|rutgers}!cbmvax!grr but no way officially representing arpa: cbmvax!grr@seismo.css.GOV Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)