On 6/21/21 11:53 AM, Paul Koning wrote: > Perhaps you were thinking about the CDC 6500 at the late lamented LCM? That > got some replacement stacks, which was an interesting puzzle because the read > data connection out of the memory modules is a differential analog signal > carrying the sense wire data, so the replacement module had to produce > signals of that form.
No, it was definitely a CHM project--could have been for the 1401, though. In way of comparison to the 6000 core, 1401 and 1620 memory is much larger, less dense and slower--and I don't believe that the machine architecture makes use of a read-modify-write that the 6000 so neatly exploited. >From whence did the LCM 6500 come? --Chuck
