Assembler MVC basics

Playing with S/370 assembler specifically the simple MVC instruction. Realized I’d forgotten basics by examining storage with the SNAP macro, after trying various moves. Came to realize that the length is only determined by the first operand. Verified this later by looking at yellow card. Figured out one way to move values to a 80 …

Docker problem solved!

Finally got the dockerfile from the Linux Academy to successfully run on my Linux Mint computer by…Uninstalling the old then reinstalling docker. Followed this guide https://gist.github.com/dweldon/39ca0536168a92815a56df44eb55a337 which managed to accomplish the task in far fewer words than others I saw. Now at Docker version 19.03.5, build 633a0ea838! Wow that little diversion really slowed my Docker …

MVS 370 Assembler & Docker

More work on understanding MVS 370 Assembler. Realize I’ve forgot much. Such as there’s no Divide Halfword and with divide [D] the dividend requires even(Reminder)/odd(Quotient) pair of registers. If not for the SNAP macro, I would have probably spent way too much time trying to find out why “PACK PACK01,=P’67890′” doesn’t work, “PACK PACK01,=C’67890′” is …