Greetings boys and girls,
again, I've got a few questions. When I got my CC in the early spring of this year, the first upgrade I did was to a Mystic. I kept this setup for a while until I actually attempted (and succeeded) the Takky mod with the Show and Tell board (Performa 630 w/DOS Card - video on this board was actually quite slow compared to the Mystic, unfortunately). A while back I had the urge to mod it even further to be actually able to "do" some really productive stuff with it (heh). I've purchased a 6500 board which came combined with maxed out memory, Cache Card, CSII NIC, and Apple Video Input card, figuring it would be the best deal for my buck (and especially performance since it's got the highest bus speed and ATI Video Chipset rather the apple home-brewn framebuffer). Let me just say beforehand - it's pretty *bitchin'* in my oppinion ... heh.
Anyways, there were a few issues I've encountered. The first and most significant in my oppinion was that when I have the cache card installed, it will not continue to load, I can hear the startup sound (so much nicer than the regular 68k one), the screen powers up / charges, but no output of picture - it won't continue loading. But when it's removed, I get the sound, screen powers up, video cards kicks om and off I go. Now, what in your oppinion could be the cause of that? I've read that it usually *should* work without the 3.3v from the PSU; The Colour Classic FAQ mentions that I *do* need to add a 3.3v converter if I'd use either PCI or Cache Slot. Could this be the cause?
The second was that whenever I had the SCSI disk hooked up to the bus (internal or external), the system would freeze, but if I'd unplug the connector while system was still running (not recommended I suppose), it would immediately unfreeze and continue booting. After a long time messing with the disk, I had the set the jumpers to disable 'Sync Negotiations' - don't know why this setting worked on the 630 but not the 6500 - anyhow, it is working now.
I can't seem to get the the CS-II card to work - when using i.e. the AppleTalk control panel, the card is recognized (I can see the MAC-Address) but it does not seem to be operational. I suppose this is because I do not have sufficient 3.3v coming into the system as PCI requires this, and the CS-II is bound to the PCI-Bus - unless OS 8.1 does not provide the proper driver (unlikely though, as it's an Apple-branded card anyway). I suspect that 5v are required for the ICs (as usually any digital components require) and 3.3v for the bus itself? Just a wild guess though.
The last thing I've noticed is that there's static interference that is not audible when using the regular system speaker, but when i.e. using the headphone jack, it is noticable. When I have the i.e. Video In card and / or the NIC card installed, it's even more significant - is there a special part that needs to be grounded or is that normal for a 6500?
Anyways, if you're still reading this, I'd appreciate any of your commends and / or suggestions and I thank you in advance! Oh, and by the way, I'm still using OS 8.1 for the time being, but how does OS 9 or 9.1 run on it?