公开(公告)号：BR8800289A

公开(公告)日：1988-09-06

申请号：BR8800289

申请日：1988-01-26

Applicant: IBM

Inventor： MANSFIEDD ROBERT ,  SPENCER ALEXANDER K ,  CLAIR JOE C ST

IPC: G06T11/00 ,  G06T11/20 ,  G09G5/18 ,  G09G5/393 ,  G06F15/62

公开(公告)号：BR8800248A

公开(公告)日：1988-09-13

申请号：BR8800248

申请日：1988-01-25

Applicant: IBM

Inventor： GUPTA SATISH ,  LUMELSKY LEON ,  MASFIELD ROBERT L ,  ROMERO HECTOR G JR ,  SEGRE MARC ,  SPENCER ALEXANDER K ,  CLAIR JOE C ST ,  WAGONER JAMES DONALD

IPC: G06F3/153 ,  G06T11/20 ,  G09G5/393 ,  G06F15/62 ,  G06F3/14

Abstract: As the speed and capacity of graphics workstations and personal computers including graphics adapters increases, a display adapter which can be used either in such a high capacity stand alone graphics workstation or in conjunction with a large main frame host computer includes a first processor for managing adapter resources and controlling coordinate transformations; a system storage for storing instructions and data representing information to be displayed; a first-in, first-out input buffer for allowing asynchronous and overlapped communication between the graphics system and a host computer;a second processor for drawing vectors and manipulating areas to be displayed on the monitor;a frame buffer connected to the second processor for storing a bit map of data to be displayed; a colour palette connected to outputs of the frame buffer for providing appropriate colour signals to the monitor; and a hardware cursor circuit for controlling display of a cursor on the monitor.