TNT4882 interrupt driven driver, getting interrupt on entry into TACS

[pblewis]

I am writing an interrupt driven driver for the TNT4882 device (one chip mode) running on custom hardware under the Radsys/Microware OS-9 operating system.
I can receive an interrupt when the device is addressed as talker, entering TADS, but it may then go to SPAS and subsequently TADS and TIDS. I do not wish to commit data to the FIFO before I am sure that the device is in TACS.
Is there any way to receive an interrupt for the transition from TADS to TACS?
Thanks in advance.

[GPIB_Guru]

From what I can tell, Radisys/Microware OS-9 offers a C++ compiler. You may want to consider using the NI-Device DDK.

To answer you question, you can use the DO bit in ISR 1 to determine the transition from TADS to TACS. From TACS, you need to use the ATN and IFC bits determine your transition from TACS to !TACS. Don't be alarmed when the manual says that the DO bit is undefined for 1-chip mode. That is a typo. I looked in the schematic, for 1-chip mode, the DO bit has the same meanins as for Turbo+7210 mode.

[pblewis]

This works just fine, thanks.
Will the manual be changed?

[GPIB_Guru]

I will see what I can do. First of all, I will try to get this information placed on the Knowledgebase.

Thanks for the update.