The AHA-1510A controller is an ISA, no pnp, biosless SCSI controller, that can make your life hard. Use the settings below to start it. Note: if the boot disk is on the controller, it won't boot. Move your kernel on a floppy disk and start from there.
options aha152x aha152x=0x<port>,<irq>,<scsi_number>,1,1,0,100,0
options aha152x aha152x=0x340,11,7,1,1,0,100,0
MODULES_INITRD = "<other modules here> aha152x"
# mk_initrd
All of the above have been found in the Internet (if someone thinks I copied from him, just tell me so to refer to him). I' ve tested them in SuSE 9.0 and worked.