Hi!

I picked up the following from work today, all in a bundle:

- Adaptec 1510 ISA SCSI controller. Has only one jumper bank, set to "I1".
- Various cables... too many to mention.
- Corel 5.25" external SCSI WORM drive. ("Mfg by Panasonic in 1991" on back)
- 940MB "Write once" disks.
- 1GB "rewritable" disks.
- Cleaning disk.

All of these were in one box sitting around the lab, so none of these items 
could've been picked up seperately - The disks have labels detailing "backups" 

of various things, so I'm assuming they all have data on them already.

My system is:

- 486DX2/66Mhz, 32MB RAM, all ISA bus. Award BIOS.
- ISA IDE controller, two hard drives (99MB each), two floppies (1.2/1.44MB)
- 16 color EGA video adapter.
- Sound Blaster Pro 2, with a Panasonic 2x CD-ROM drive, set for IRQ7, DMA 0.
- Rockwell 33.6 internal modem, set for COM2, IRQ3.
- OS/2 Warp 3.0 Redspine, no fixpacks. HPFS installation.
- No other tasks running when the problems happen.

I have the following lines in my CONFIG.SYS file to get things running:

BASEDEV=AHA152X.ADD /ET /V
BASEDEV=OS2SCSI.DMD
DEVICE=C:\OS2\BOOT\OPTICAL.SYS

The Corel drive has the following DIP switches turned on, although OS/2 
doesn't seem to care about these. I played with them all night to see if this 
solves the problem, but it doesn't. I've left the following jumpers enabled:

- "Termination", I have no idea what this means.
- Parity checking, although OS/2 doesn't seem to care about this.
- Auto start on powerup.

Now, I managed to get the controller and drive to power up, HOWEVER, OS/2 
crashes during the following:

- OS/2 reports "drive is not functioning" when I insert a 940MB disk.

- And OS/2 crashes completely when I insert one of the 1GB disks. CTL+ALT+DEL 
  reboots the system, but does not reset the Adaptec controller card. This 
  causes the ADD driver not to load, thus OS2SCSI.DMD and OPTICAL.SYS don't 
  get installed at all... resulting in me having to power down the system.

- If I leave a 1GB disk in the drive during bootup, OS/2 will crash completely 

  just before loading PM... but this doesn't happen with a 940MB disk.

- It doesn't matter if I toggle the write-protect tab on the disks.

The LED flashes during loading, the drive appears to power up & spin 
perfectly... and OS/2 properly reports "drive not ready" when theres no disk 
in the drive. So, I'm assuming nothings wrong with the drive itself.
Otherwise, other strange things would happen, right?

I hit ALT+F2 to display the drivers as OS/2 boots up... its taking OS/2 a REAL 

long time to load the aha152x.add driver. The drive also "resets" itself 
during this time (motor powers down-then-up briefly and the LED flashes 
quickly). OS2SCSI.DMD and OPTICAL.SYS load perfectly.

Any suggestions? I *really* want to get this drive working for my BBS! Now, 
I'm a total idiot when it comes to SCSI, so ANY help is appreciated. :(


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