n350bq@tamuts.tamu.edu (Duane Fields) (11/27/90)
I have an Amiga 3000 and a Mistubishi 1381 Diamond Scan. When I hook it to the 31 khz port with the cable included with the monitor I have probs... I have about a 1.5 inch boarder on all sides of the display. Tweaking does little to fix this. Thinking maybe the monitor was mal-adjusted I hooked an IBM (cga) to the 15khz port and it worked great, over-scanning and plenty of tweaking room. I hooked a 1084 to the 15khz port and it worked nice and dandy. Is there a way to adjust the image size?? Is there a possible problem with my 31khz port?? (I have no vga system to test it on) Any Ideas?? This is really getting to p*ss me off!! Please offer ANY suggestions you have... signed, Frustrated.... (a.k.a. Duane Fields)
hood@cbmvax.commodore.com (Scott Hood) (11/27/90)
In article <10406@helios.TAMU.EDU> n350bq@tamuts.tamu.edu (Duane Fields) writes: >I have an Amiga 3000 and a Mistubishi 1381 Diamond Scan. When >I hook it to the 31 khz port with the cable included with the >monitor I have probs... I have about a 1.5 inch boarder on all >sides of the display. Tweaking does little to fix this. Thinking >maybe the monitor was mal-adjusted I hooked an IBM (cga) to the >15khz port and it worked great, over-scanning and plenty of >tweaking room. I hooked a 1084 to the 15khz port and it worked >nice and dandy. Is there a way to adjust the image size?? Is there >a possible problem with my 31khz port?? (I have no vga system to >test it on) Any Ideas?? This is really getting to p*ss me off!! >Please offer ANY suggestions you have... > >signed, >Frustrated.... (a.k.a. Duane Fields) This may be due to the fact that the Diamond Scan is expecting a VGA style video output at 31.5Khz and as such the apect ratios of active video between the NTSC or PAL de-interlaced output vs the VGA output is different and may be giving you this border. This is more of a problem with the MicroWay FlickerFixer (TM) because of the way the FF outputs the amount of active video and the display enhancer (A3000 or A2320) will output much more active video (overscan). For example, on several of the older NEC monitors there was a large black border around the screen display when used with the FF but when used with the display enhancer, was almost behind the monitor's bezel. In short, there is nothing wrong with the 31Khz port, the monitor just appears to not have enough adjustment range for the sizing controls for the type of input that it is receiving. Regards, 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!"