Editing PCBoard (section)

==Multinode support==
PCBoard supported the 16C550 UARTs ([[Universal asynchronous receiver/transmitter|universal asynchronous receiver transmitter]]), such as [[16550 UART]] ("Fifo"), 16554 UART and 16650 UART, which made it possible to run multiple nodes of the BBS on a single ([[Computer multitasking|multitasking]]) computer using either using IBM OS/2 or the DOS multitasking tool [[DESQview]] in combination with the memory manager [[QEMM]]. Some [[sysop]]s tried to run PCBoard on the (then) new [[Windows 95]] [[operating system]] by [[Microsoft]]<ref>[http://ue.untergrund.net/ue/UE-00149.TXT Running PCBoard under Windows 95, NT 3.5x and 4.x], UE-00149.TXT, ''Underground Empire'', retrieved June 16, 2007</ref> and reported mixed results. Stability was critical for a BBS, which was usually running [[24/7]], and the early version of the Microsoft 32-bit operating system lacked it. Windows 95 was never officially supported by CDC.

Standard PCs then and today have only one or two (if any) [[serial port]]s (COM ports), which are needed to connect an external [[modem]] to a computer. This made multiport cards like the G-Tek "BlackBoard", "BBS550" or "SmartCard" and the "DigiCard" by [[Digi International]] popular among sysops. Other options were internal multi-modem cards and multiple computers connected by [[local area network]].

PCBoard also supports ISDN ([[Integrated Services Digital Network]]) and [[Telnet]] access via the Internet. The open source [[terminal emulator]] [[SyncTERM]], available for [[Win32]], [[Linux]], [[FreeBSD]], [[NetBSD]], [[OpenBSD]], [[Oracle Solaris|Solaris]] and [[Mac OS X]] can be used for example to connect to the few remaining PCBoard BBS installations that are connected to the Internet.