This is the memory test program that appeared in Kilobaud under the title "COOKS MEMORY TEST", and was later revised, I believe by Rod Hallen. Rod (?) sent it to Rick Downs of the Denver Solus group, and Rick gave it to me. I have changed the addresses to test 48K of contiguous memory starting from Zero. I know from nothing of the theory of operation, but it runs in my Sol. Rod, if you ever get to Denver, I would like to buy you lunch! Marty Hill 1537 Alton Street Aurora, Colorado 303 364-7447