Program for controlling electrical measuring contact instrument on glow-discharge indicator panel

A program to be entered in the read-only memory of a microprocessor is now available for controlling the display of alphanumeric and symbolic data on a panel consisting of 8x5 IMG-3-01 indicator modules. The microprocessor must have the capability to receive data in the MTK-2 sequential code and in the KOI-7 parallel code, typically from a telegraph set and from a computer terminal, respectively, to store data coming from each in separate buffers of the direct-access memory, and to display as well as to erase them. The program includes five subroutines: (1) processing of interrupts from telegraph OPRTA and from computer terminal OPRAP; (2) control subroutine; (3) display of memory contents from buffer assigned to telegraph OTTA and from buffer assigned to computer terminal OTAP; (4) clearing of contents from either buffer SBTA and SBAP; (5) clearing the display panel. The program occupies 1814 bytes in the read-only memory and 6320 bytes in the direct-access memory.