The following bugs have been filed against PCMCIA:
Description: If there is a PCMCIA I/O card in a slot that has been accessed and the card driver is unloaded (as occurs during modunload -i 0 at the end of multi-user boot) the system will appear to hang. Sometimes removing the card will bring the system back.
Description: The PCMCIA, pcic nexus, driver does not support 3.3V on devices. Cards that are 3.3V and 3.3V/5V will not work properly (seems to hang the system).
Description: Most attempts to insert/remove and use PCMCIA cards will crash or hang the machine. If it does not crash the machine it can cause memory leaks or create situations where other modules will not load.
Description: When booting Solaris 7 3/99 initially with 64-bit kernel, /dev/term/pc0 hardware device node for PC card serial device may not be created.
Workaround: Boot the system up with 32-bit kernel first, then reboot with 64-bit kernel.
Description: Inserting the PC card after system init panics the 64-bit Solaris. Booting the 32-bit Solaris and accessing the card will not panic the system. The PC ATA driver is not a 64-bit driver.