GVP Binddrivers Causes Black Screen

[mechy]

IIRC, when I boot with the PCD-50B attached with all slots empty, I eventually get 8000 0005 error instead of a black screen after the floppy and CDROM drives stop their gyrations.  I think this is a Divide by Zero error.  I will say I just recently installed more RAM in the GVP before I started messing with the PCD-50B, but the computer does boot from my old hard drive and report 13 MB of GVP RAM when I run sysinfo (but I have to re-enable the 3.12 ROM on the GVP).  RAM problem that the 4.15 driver is effected by but not the 3.12?? who knows.. more things to try.

is termination correct? it smacks of a termination problem or device conflict?

the pcd-50 b has a term jumper, and if its in the middle of the chain remove the jumper,if its the last device on the cable terminate it.

if the pcd is terminated and say the cdrom is last and terminated this would be a problem.

i would make a 3.1 boot floppy with hdtoolbox on it and try that after checking termination is right..

hmm floppy wont boot with gvpscsi rom 4.15... are you using a cloanto rom??  or maybe the scsi device fle you is bad?
tried 5.14 from ralphs site with the specific binddrivers there?
http://babel.de/amiga.html

[mechy]

It sounds like you're doing the right thing in terms of disabling the onboard ROM and putting the driver in SYS:Expansion on your boot floppy.

But those card readers use SCSI LUNs, a method of getting multiple SCSI devices at a single SCSI address. i.e., each slot on that card is a different LUN. LUNs are complicated and difficult to get working correctly. I don't know how well the GVP card supports LUNs, either in hardware or software. At a quick glance, I don't see any jumper settings related to LUNs on the GVP 030 boards.

But LUN 0 on those card readers is the PCMCIA slot. It's sort of the default, fallback slot. Try using a CF card via a PCMCIA-to-CF adapter in that slot instead of putting something directly into the SD or CF slots. What happens if all slots are empty when you try to boot?

Not sure why you say luns are hard to use, if the controller supports them they work easily,
Luns originally came about to support stuff like cdrom changers,the 4,5,7,18 disc cd changers and larger.
you literally shouldn't have to do anything(short of turning lun scanning on some older controllers like 2091/590 with jumpers. the 590 manual is actually wrong, they have a jumper marked reserve that needs set for luns.Why the manual was never updated i dont know. i stumbled on this by accident.

the 2091 is horribly slow scanning luns(sometimes populating all slots of the reader with amiga formatted cards speeds them).rev7 roms on 2091/590 are best but 6.6rom works.
 The gvp controllers with rom 4.13,4.15 handles luns perfectly-earlier roms can be hit and miss..

scsi on phase 5 accelerators,warp engine,etc work easily.