Bryan Parkoff wrote:
Knut Roll-Lund wrote:Bryan Parkoff wrote:"Martin Doherty" wrote in messageKnut Roll-Lund wrote:Hi, I'm considering to buy an RGB/80-columns card for my IIe. Will a card from USA would work for me in my European Apple IIe?I think of the frequencies... My IIe is for 50Hz power and outputs a 50Hz signal for video. Americans use 60Hz for power and video. So would an RGB card from US output 60Hz video in my machine which would be incompatible with a European monitor?If this is a problem, would it be possible to modify the card to 50Hz (by changing a crystal or something like that)?KnutWhen you say "European monitor", which monitor are you intending to use?Do you have an AppleColor 100 RGB monitor (model A9M0308)? As far as I know, this is the only monitor that will work with the Apple //e Extended 80-column text/AppleColor adaptor card. This monitor uses digital TTL RGB signals - you won't get good results if you try to use an analog RGB monitor like the one sold for the IIGS.Unfortunately I don't have the manual for this monitor, but the label on the back says "Model A9M0308, 115 VAC, 60Hz, 1 Amps"Are you sure that AppleColor 100 RGB monitor (model A9M0308) will work Apple //e's RGB card with 80 column? You may know that there are some CGA Mitsubishi monitor probably work with RGB card, but they can't be certain if it is TTL or analog signal.I'll try to get a proper AppleColor 100 RGB eventually. I do realize that this is a digital RGB signals.I have two monitors that possibly can be used. One is an IBM CGA monitor and the other is an Olivetti M24 monitor.Knut,If I use Mitsubishi CGA monitor with ISA card, I would require to use an adapter from DB-9 to Apple //e RGB Card's DB-15. I don't need ISA Card unless I connect to PC motherboard for testing.Are you willing to sell one of your two monitors? Bryan Parkoff
No, sorry, I normally use the CGA monitor with a PC-AT with a Video-7 CGA card. The Olivetti monitor belongs to the M24. It has a DB-25 but it has the same signals as a CGA card. I think it should also work.
So the Apple might borrow a monitor for some time only. I would want to have a matching Apple monitor.
BTW the Olivetti M24 is a 16 bit 8086, PC-XT compatible but twice as fast. The graphics is better than CGA, in some games Tandy mode work. It was pretty hot before the PC-AT came.
Knut