ZZ9000 question

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  • Amiga model: A4000T
  • 680x0 CPU: 68060 TF4060
  • RAM Configuration: 2meg chip, 264 meg fast (8 on mb)
  • Kickstart, AmigaOS Versions: multiboot 3.1, 3.1.4, 3.2 but question is most likely dealing with 3.1 and 3.1.4
  • ZZ9000 Firmware version: 1.13 zorro3 no fast
  • ZZ9000 Driver version: P96 3.61
  • Monitor model: LG 27UD68 W
  • Other Zorro cards: Toaster in top video slot
  • ZZ9000 daughtercard in bottom video slot
  • ZZ9000 main board in next Zorro slot
  • Next slot empty
  • Flyer in next Zorro slot
  • Bottom slot empty

The question is in regard to using a toaster while maintaining ZZ9000 output. The toaster changes the rgb output in some way creating composite sync at the rgb port. This output is then run through a ‘dongle’ sync strainer so it can be seen on a multisync crt monitor.

The ZZ9000 is (obviously) connected via hdmi to my flatscreen. In normal use I can see images on both monitors as long as I keep the NTSC monitor type in devs and use an NTSC mode (best as hirez laced). If I want any ZZ modes I can’t use the Toaster to my understanding so these modes are reserved for other computing sessions and they do work . The ZZ then does what it does and provides a nice display to the flatscreen. However, once the toaster is started and it Genlocks to the Amiga rgb output the ZZ looses sync in some way creating offset 4 box partial images over its hdmi output.

I’m trying to determine if this might be a flatscreen monitor issue where mine cannot display the output the ZZ is providing or if the ZZ is losing sync due to the composite sync/genlock condition.

And if so can some sort of driver fix this allowing the ZZ to work with composite sync?

Or some setting I could make allowing for this mode.

I have seen others using a Picasso IV card in this manner unfortunately I have no setup data to draw from.