On 2016-05-24 7:44 PM, Chuck Guzis wrote:
On 05/24/2016 02:21 PM, Paul Berger wrote:The CROS cards used in a 360/30 where the same size as an 80 column card on purpose so you could you a keypunch machine to program the microcode.But I believe that the CROS cards were mylar, no? --Chuck
Yes mylar with copper tracks keypunch was used to cut tracks as required. Paul