I have a GVP A2000-030 Combo with a 3.12 ROM in it. I've been trying to get it to work with a PCD-50B and 3.12 recognized the drive, but not an inserted 4 GB SD Card (the PCD-50B lights blink around and stop briefly on the SD card when inserted which tells me it's getting recognized as being there by something). I tried formatting it FAT32 and FAT.. nothing worked. So I figured I needed to upgrade the GVP ROM based upon what I read here. Since I don't have a ROM yet, I disabled the ROM on the GVP and put 4.15 drivers in the expansion folder on the boot disk (I'm booting from an OS3.9 emergency boot disk at the moment).
My understanding is that the BINDDRIVERS command in the startup-sequence would load those drivers... which appears to be what happens.. everything looks normal during boot.. the floppy drive grinds away, CDROM fires up, back and forth, over and over.. But.. then everything is quiet and I'm left with a black screen. Never shows me the workbench. I tried many things last night, but I think that I get a black screen if there is a SD card inserted into the PCD-50B and a 8000 0005 error if its empty (I'm tired and can't remember everything). Regardless, there's a problem. I did the same thing with the old hard drive in place of the PCD-50B and got either the black screen or the 8000 0005 error (can't recall which.. I think the 8000 0005 error.. but that's when I went to bed). I've checked the termination and everything is good (I can boot to the hard drive and use the CDROM.. the only devices on the GVP's SCSI controller.)
If I put a 4.15 ROM in, would I not get the same results as using BINDDRIVERS? If so, what could be causing it to do this. If I re-enable the 3.12 ROM, everything works fine (except I'm back to square one with recognizing the SD card in the PCD-50B). Is there any other GVP software that gets called, like gvpscsictrl, during boot that may be incompatible with v4.15? I didn't copy that file onto the boot disk. I'll do more investigating this evening of the startup-sequence I guess..
John