Computer having a feature bus with buffers for external devices

摘要

A computer (10) has multiple PC Card slots (12a-b), either of which can receive a ZOOM video device which accesses the frame buffer (50) through a VFP port (46) on the graphics controller (48). Further, a docking station (38) may also access the frame buffer (50) through the VFP port (46). Buffers (26a-c) are controlled such that only one device accesses the frame buffer (50) through the VFP port (46) at a time. <IMAGE>