permanently migrated over to a Linux-based virtual when the original system exhibited some issues. Most of the functionality remains identical with a few changes, such as adding eXpress message retention, and removing delays during registration and idle account deletions. Moving away from the University of Iowa The ISCA student group created a non-profit corporation (Iowa Student Computing Alumni) and separated from the University of Iowa on December 16, 2006. The domain name has been changed to bbs.iscabbs.com from bbs.isca.uiowa.edu. Infrastructure ISCABBS originally supported over a thousand simultaneous users on a 50 MHz PA-RISC system with 64MB of RAM, which ran HP-UX. In later years, the system was upgraded to an 80 MHz processor and 128MB of RAM, though the active user base is much smaller. Connectivity was provided by the University of Iowa. Due to the popularity of the BBS and its limited resources, much effort went into shrinking the size of the BBS process in memory. Stripped-down versions of standard libraries were written that included only the handful of functions that the BBS required to operate. When ISCA separated from the University of Iowa to become its own non-profit organization, the BBS was moved to a new co-location hosting facility in Iowa City, Iowa. ISCABBS ran on an HP Visualize model B132L workstation, with a 132 MHz processor, 192 MB of RAM, and two 2 GB SCSI disks. However, as noted above, it has now migrated to a Linux virtual hosted by user Chris Gauthier (Copper Lethe). Features Topical discussion areas ISCABBS has the capability of having 200 forums (formerly known as rooms) for discussion of assigned topics. Forum Moderators are assigned to each forum are responsible to ensure compliance with the topicality of the forum as well as ISCABBS boardwide Policy. Instant messaging eXpress messaging is another functionality which allows users to send up to five lines of an instant or "express" message to another user. These messages are not permanently stored; only messages received and sent during the current user session can be reviewed. Internal mailing A special mail forum allows for private messages of unlimited length to be sent to and from users. These messages are stored for a significant period of time (typically three to nine months). Client interface Multiple clients have been created to ease interface with ISCABBS, provide additional features as well as distribute a portion of ISCABBS's overhead from the ISCABBS machine