Category: warstory

MDS II

        IBM at it’s best
This special system was built specifically for NYSE to report trading data.

Hardware:

Two /360 Model 50s, RPQ’d to function like Model 65s.
  RPQ’d to use Channel-to-Channel to signal each other
  RPQ’d to fetch from LCS

LCS non-volatile memory, configured:
    2megs duplexed
  or 4megs simplex
  or two separate 2-meg units.

  RPQ’d to feed the LCS’s 4-byte memory fetch to accomodate the /360-50’s 2-byte memory fetch. Continue reading