Minicomputer front end. [Modcomp II/CP as buffer between CDC 6600 and PDP-9 at graphics stations]
Sandia Labs developed an Interactive Graphics System (SIGS) that was established on a CDC 6600 using a communication scheme based on the Control Data Corporation product IGS. As implemented at Sandia, the graphics station consists primarily of a PDP-9 with a Vector General display. A system is being developed which uses a minicomputer (Modcomp II/CP) as the buffer machine for the graphics stations. The original SIGS required a dedicated peripheral processor (PP) on the CDC 6600 to handle the communication with the stations; however, with the Modcomp handling the actual communication protocol, the PP is only assigned as needed to handle data transfer within the CDC 6600 portion of SIGS. The new system will thus support additional graphics stations with less impact on the CDC 6600. This paper discusses the design philosophy of the system, and the hardware and software used to implement it. 1 figure.
- Research Organization:
- Sandia Labs., Albuquerque, N.Mex. (USA)
- OSTI ID:
- 7285151
- Report Number(s):
- SAND-76-5354; CONF-760440-1
- Resource Relation:
- Conference: AESOP/SCIE meeting, Washington, DC, USA, 1 Apr 1976
- Country of Publication:
- United States
- Language:
- English
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