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Re: Zeta SBC working!

Hello ALL,
 
I feel a little ashamed of myself, because I have involved so many people here and everyone tries to help me! 
 
By the way, I bought my floppy drive as 'used' at ebay.
 
At the end, Wayne and I supposed that it could be possible that one of the heads is not working.
 
That's why I 'finally' tried the following: I took a cotton bud and some propyl alcohol and cleaned both heads. I hoped that mud caused all my
problems.
 
After that I really could format several disks with FTDST  and make successful WRITESYS's! First with 720k, later on with one 1.44MB, too.
 
Only  VERIFY DISK from FDTST still shows sector errors. That can be normal because all my diskettes are not the best as they seem to be older Nonames, although I bought them as new.
 
I hope the whole problem is resolved now. The Zeta hardware seems to be working correctly.
 
In the next days I get a new Sony floppy drive and I'll go on testing. I'll inform you about my results!
 
 
Thanks to all of you !
 
Norbert 
 

Am Sonntag, 10. Juni 2012 09:36:58 UTC+2 schrieb Norbert Joppen:
One more Zeta sbc working!!!
The only problem: FD is still not working.
I have the Zeta SBC board Version 1.3.
I'm using a stabilized 5V 3A switching power supply, FDC_int is jumpered at JP3.
The CPU clock oscillator is 6MHz.
Exactly the same behavior as Brian Pitt described on the N8VEM Zeta homepage (at the end).
I try to format a 720 disk with FDTST, choose the necessary options but no LED on at FD.
'Reset drive' is shown in the terminal programm, then the menu appears again.
STAT tells me that there are 3 devices (A,B,C) but they all are R/O.
I'm afraid I do not exactly understand  the solution Brian Pitt describes:

"Hi Wayne
Now got it working. Have taken out link J3 . Screen print on PCB is ambiguous.
Can now successfully format copy and read Floppy.Thanks for all your help.
Last question for now ( I am new to CP/M ) How do I amke a bootable floppy.
Thanks
Brian"

Someone here who can give me a hint?

Thanks Norbert