VHDL中带有大小写语句和进程声明的语法错误

I'm attempting to model a control unit with a reduced instruction set in VHDL. I've been compiling a lot to ensure that the code still compile, but somewhere along the line, I must have done something wrong. After fleshing out the decode states for many of the instructions, I started getting the following set of errors. I'm attempting to model a control unit with a r