Universal PROM programmer, commands are available under the ISIS-II operating system for performing the following operations:

1. Loading the data to be programmed from a selected input device (disk file, paper tape or system console) into the MDS memory.
2. Displaying or changing data in the MDS memory.
3. Programming a segment of a PROM with the data which are stored beginning at a specified address in the MDS memory.
4. Transferring a block of data in a PROM into memory so that the contents of the PROM may be examined through the system console or used to produce a duplicate PROM.
5. Transferring a block of data from a PROM into a disc file.
6. Comparing a block of data in a PROM with the contents of a segment of memory (program verification).