Emax

I hadn't heard of this issue.

It should do just as you say- check floppy, when not found boot HD.

What version EPROM is in that unit?

The only other things I could think of is:
 if Pin 18 solder connection was broken, as that is the ACK signal.
And on boot I would think if the CPU didn't get an ACK back, then perhaps it wouldn't think there was a drive there�.


or perhaps termination issue.

just a thought�

On Feb 9, 2013, at 9:19 PM, Gary wrote:

Did you ever get a solution to this?

--- In emax@...m, "esynthesist" wrote:
>
> The problem below has probably been posted here before, but the 
> search engine on the yahoo groups seems not to scan older messages 
> anymore, so I thought I'm "allowed" give it another try:
> 
> I just connected a hard disk to my Emax Plus Rack. Except for the 
> floppy drive, no other hard drive is connected to the Emax. The SCSI 
> ID of the HD is set to 0.
> The problem is: the Emax only wants to boot from the floppy. Once 
> this is done, it recognizes the HD on SCSI ID O and I can load/unload 
> banks from it. The HD also contains the Plus operating system: it has 
> been formatted by the Emax and I performed an additional "copy 
> software" just to be sure...
> 
> Now I read about this "cheat" of the floppy connector on the 
> motherboard (jumper between pins 25 and 26).
> But that's mainly used for replacing the floppy drive by an internal 
> ZIP drive and making sure that the Emax still thinks a floppy drive 
> is connected. That's not what I want.
> 
> Bottom line: I don't understand this boot issue with the Emax. In the 
> original documentation of Emu, it seemed perfectly possible to have 
> an Emax with both an internal HD and a floppy drive. When booting, 
> the Emax should first check the floppy drive; if no floppy disk is 
> found, the Emax should boot from the HD on SCSI ID 0.
> It doesn't do that on mine, it doesn't even check the SCSI chain, it 
> immediately asks to insert a disk.
> 
> So what do you think I'm doing wrong ?
> 
> Thanks
> 
> ///E-Synthesist
>





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