System/36 Twin-Ax decode help

From some slef-progress and a few replies.. an update. I've managed to figure out the rough framing of the TwinAx messages from primarily this document: http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/5250_5251/SY31-0461-0_… ...where it talks about the commands and modifier bits. However I'm missing a detailed command reference that covers basic stuff; for example the argument format to the SET MODE command, etc. But it was enough to update the decoded output with tons more detail - here: https://www.retrotronics.org/tmp/s36_ipl_twinax_decode_31nov19.zip I 'think' this is enough to respin my break-out with a iCE40 and a ESP32 for a true wireless interface. I have a line-driver chip that is still coming in from Digikey this week that will let me try and talk to a InfoWindow II terminal as if I'm a midrange host - validating all my transmit logic. Then I might put this project on the shelf for a while unless I can find more docs that explains the command further. -Alan H On 2019-11-30 18:38, alan--- via cctalk wrote: