The 6700 was a university mainframe, the only one at the Uni, everything ran on it, from payroll to research. That memory purchase doubled the size of the machi

The 6700 was a university mainframe, the only one at the Uni, everything ran on it, from payroll to research. That memory purchase doubled the size of the machine's memory. Memory cycle time was 1uS ... That's read time, core reads are destructive, and you have to write the data you read back, writes were faster ... Read-modify-write cycle could be done in the same time as a read