GRAPHICS
Abstract
The APEX display executive has been in regular operation and experience with new display hardware and a remote display console has been helpful in pinpointing needed changes. The APEX interrupt executive has been completed and will be evaluated during the next quarter. A new APEX scheduling algorithm has been implemented in order to improve the system response to users. The 338 remote console is operational in Washington, D. C., and is being used on a routine basis. The compiler-compiler system VITAL is in regular use. The programming language LEAP, implemented using VITAL, has been used for programming constraint problems, a portion of the new VITAL system, integrated circuit mask layout, and two debugging packages. These latter present their data graphically to the user. The design of an improved VITAL system is under way. The earth display program created earlier in the year has been used on actual data obtained from LES-4. A new approach for solving constrained systems is under development which uses a geometrical model. Several trial applications of this method have been programmed using LEAP. A special compiler and language for testing integrated circuits have been developed. A theory of generalized superposition has been applied to waveform processing. Programs have been developed for scanning, processing, and photographing pictures which are subjected to this new kind of filtering. Programs for integrated circuit mask layout are under development which will allow designers to sketch in mask components and rearrange them in search for a satisfactory layout. Photographs can then be taken of the resulting masks.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 1967
- Accession Number
- AD0663728
Entities
People
- Jack I. Raffel
Organizations
- Massachusetts Institute of Technology