Phipli
Well-known member
I fetched my IIci out.but with my Mac IIci I only get a black screen. I wonder why?
Set your adapter to 1456. It works on my ViewSonic.
I fetched my IIci out.but with my Mac IIci I only get a black screen. I wonder why?
If the monitor works, then the rear power switch also works to shut down. But if the monitor doesn't work (with the BNC connector) then the rear power switch has no effect. I wonder if the Mac is displaying a dialog that says "you don't have a monitor" and so it can't shut down.One drawback of the Performa 6214, when booted without a working monitor: there's apparently no way to turn it off. There is a tiny button on the back panel with a power logo, but pressing and holding the button did nothing.
Hmm, there are many old threads here discussing IIci internal video, which all seem to agree that it can't output 640x480@60Hz VGA, and many modern monitors won't accept its 640x480@67Hz signal. I'm not sure about the sync on green but that might also be a factor. I'll play around with it some more.
Did you try 1456?Thanks, I'll make a note to search for those monitor models. I already have a Dell 2001FP which works great with all the Macs I've thrown at it (using a VGA adapter), and it also has a composite video input that works with my Apple II systems, even with an Atari 2600. A great monitor for vintage computing.
I'll keep fiddling with switch settings, but unfortunately it looks like the three new monitors I acquired this week are all much more picky, and I haven't been able to get the IIci working with any of them. E-Machines ColorPage T16 II 1108DT16MR 1024x768 multiscan Trinitron CRT, Viewsonic VG900b 1280x1024 LCD, Viewsonic 6 1024x768 CRT.
Sometimes, but not other times. Mine looks like yours and the tables seem to match. Well, I'm intentionally using the one of mine that looks like your 10 switch.Are the numberings standard across different brands of adapter? I didn't think so.
If they are what I think they are, they're useful for forcing a MultiSync monitor to do higher resolutions on a Mac that doesn't support MultiSync. You can set the sense wires to what you want. Usually a MultiSync defaults to 640*480 on a machine that doesn't recognise it.Here's a curious pair of adapters that were included with the P6214 system:
Not supported in 7.1 or older though. At least on my IIci specifically, and IIx.As far as shut down, there’s nothing that “keyboard power button, then return” can’t fix…working monitor or not.
Thanks, I'll make a note to search for those monitor models.
I have a schematic for a 6-pin adapter available. I think it’s common to have the first 4 pins wire sense pins and ground to each other, and the next 2 wire diodes between sense 1 and 2. Order could differ within each of those groups. The remaining four would be for mapping sync signals, but I’m not sure how.I wish someone had a schematic of what the 10 DIP switches do. It would be a nice reference for figuring this stuff out. I'm pretty sure switches 1-3 are the sense pins, but I have no idea what the other 7 do.
I think you may be right. I've had some luck now using the Mac-specific BNC cable with the DA-15 to DA-15 adapter with the rotary wheel (see photo a few posts back). I talked to the original seller and he said that's how he was using it.I wouldn't be surprised if the Mac-specific cable is meant to be used with an E-Machines video card, when combined with that monitor.
Hmmm, I wonder if that same adapter might help my M1298 monitor work properly with the RasterOps video card in my IIci... Although, that's probably more of an issue of the RasterOps software not being installed on said computer's hard drive. Need to pop the drive out, connect it to the G4, then copy the installer over to it, and reinstall the drive into the ci.I think you may be right. I've had some luck now using the Mac-specific BNC cable with the DA-15 to DA-15 adapter with the rotary wheel (see photo a few posts back). I talked to the original seller and he said that's how he was using it.
All of this DIP switch voodoo is extremely confusing. It's not just a question of the DIP switch settings (and the many different brands of adapters with different switch configurations), but also the specific Mac model or video card and how it will interpret the sense pins and what video modes it's capable of. There's no easy way to debug what's happening either. If you're lucky your monitor might display an error like "signal frequency out of range" to help you, but that's not very common, and it still doesn't tell you much about what's happening on the Macintosh side.
According to the adapter instructions, 14 is 640x480@66Hz with sync on green. 1467 is the same resolution with separate H and V sync. 1456 is the same with composite sync. None of these worked with my IIci and the Viewsonic VG900b. I am wondering if the VG900b simply doesn't support 66 Hz refresh.Did you try 1456?
Works for me on my IIci with a ViewSonic LCD.
So did just "14" to be honest.
It thinks it is a greyscale monitor - the Apple greyscale monitors used the blue channel.was all blue
CRTs tend to be more compatible. Shame about the ViewSonic LCD, mine has been pretty good with old video signals. It even /tries/ to show a portrait display. In blue as you noticed.I will try a more exhaustive test with the Viewsonic 6 CRT next.
Not all monitors support more than one resolution and refresh rate. This might be one of those depending on how old it is.With the wheel adapter and the Mac DA-15 to BNC cable: At J setting (640x480@67Hz) I get nothing. This is surprising... I really thought this one would work. This is the plain vanilla Apple 13" color mode, connected to a monitor marketed and sold for Macs and with a Mac DA-15 connector, so how can it not work?