GRASP: A PL/1 COMPATIBLE GRAPHICS SUBROUTINE PACKAGE FOR THE IBM 2260 DISPLAY STATION (LOCAL ATTACHMENT). VOLUME 2 - PROGRAM SPECIFICATIONS
Abstract:
GRASP is a set of PLI compatible subroutines which provide programming support for the IBM 2260 Display Station in local attachment i.e., the attachment of a 2260 directly to a System360 CPU channel via the IBM 2848 Display Control. The subroutines are coded in OS360 Assembler Language and are reentrant. They permit the PLI programmer to manipulate the 2260 as an IO device in the same manner available to the Assembler Language programmer using the Graphics Access Method under OS360 with restrictions as noted in the Introduction to Volume I of the document. All errors, except those which normally result in OS360 abnormal ends ABENDS, are returned to the user via subroutine parameters. GRASP is designed to operate under the MFT configuration of OS360. Volume I AD-706 133 of the document gives an overview of the 2260 and an introduction to the GRASP routines. Volume II gives detailed program specifications.