RCM3900: Question on certain I/O pins

I’m running low on I/O and I’m attempting to find 2 more output pins. Likely candidates are the following:

/IOWR on J62 pin 24
/IORD on J62 Pin 25
LINK on J61 pin 33
ACT on J61 pin 34

The manual contains notes about these pins that leave me uncertain about their suitability/availability. The question is:

Are these pins usable for asynchronous toggling and able to drive the input of an IC?