zoomfloppy flashes on every command except "cbmctrl reset"

[Matthias Dolenc]

Hi, my Name is Matthias!

I'm new to this group and to zoomfloppy as well.

I hope this fault might be a common one to diagnose and solve, but not for me, I need your expertise to help me through. I'm working on this for hours...

Here is what I've found so far, but you also might need these information:

MacBook Pro (2011) running Sonoma.

matthias@MacBook-Pro-von-Matthias opencbm % cbmctrl -h

cbmctrl version 0.4.99.104, built on Jan 22 2022 at 22:01:25 (...)

matthias@MacBook-Pro-von-Matthias opencbm % xum1541cfg devinfo

finding device...

xum1541 device, model 2 (ZOOMFLOPPY), firmware version 8

When no serial nor parallel cable connected:

matthias@MacBook-Pro-von-Matthias opencbm % cbmctrl status 8

99, driver error,00,00

Serial connected, the LED of ZF start flashing rapidly after the following:

matthias@MacBook-Pro-von-Matthias opencbm % cbmctrl status 8

and die Terminal isn't reacting anymore/hung!

but when I disconnect the serial cable the terminal awakens and I get

USB error in xum1541_wait_status: LIBUSB_ERROR_PIPE

The 1541 is working with real C64 otherwise, no problems with the serial-port. 

The device number is correct.

The pins 1 to 6 on the serial Port - measured with multimeter or oscilloscope is 0 to 0,5 V. Thought there must be at least some of them high-inactive.!?

 

This is what my working directory looks like:

matthias@MacBook-Pro-von-Matthias opencbm % ls -l

total 88

-rw-r--r--   1 matthias  staff      0  1 Jan  1970 PortIndex

-rw-r--r--   1 matthias  staff      0 23 Jan 22:27 PortIndex.quick

-rw-r--r--   1 matthias  staff   1359 23 Jan 22:27 Portfile

drwxr-xr-x  80 matthias  staff   2560 23 Jan 22:40 nibtools

lrwxr-xr-x   1 root      staff     51 23 Jan 22:23 work -> /opt/local/var/macports/build/opencbm-722761b1/work

-rw-r--r--@  1 matthias  staff  38681 23 Jan 22:59 xum1541-ZOOMFLOPPY-v08.hex

Should I mention that I flashed the "xum1541-ZOOMFLOPPY-v08.hex" myself?

During installation I tried to follow all the steps mentioned in the manual and for some obstacles I prompted Gemini, that helped a lot.

I don't know yet how to use libusb_debug-Mode or find the log. In 2020 there was another questioner here with a similar problem-but I don't know whether this was the same issue 'cause I'm on a Mac.

If it's only a USB-Driver issue or somewhat alike- how should I proceed or what should I check to get the pretty thing running?

PLEASE HELP.

[Matthias Dolenc]

The solution to this issue is a broken 741LS06. 

Now 'cbmctrl status 8' works as expected. This evening I'll try to rip the first disk... 

I just ask myself wether the SRQ signal should also dissappear !?

 If so, the new IC might be still partially broken. 

Should I bother about the SRQ-Signal on the IEC bus, that still ist stuck low.?