1. Identification: "Graduate (C)1988". Only the first char 'G' is checked.
2. Accessory ROM name is ASCII string terminated with '$'. Graduate's Accessory ROM 1 is called "CP/M Accessory Rom 1\r\n$". You need to provide a description. At a minimum '$' on it's own is ok. The code displays the string and doesn't check if it goes past the space allocated in the ROM.
3. Loading code is required. The ROM executes it. Code is copied from &c070 (length &200) to &3f70 in RAM.
;; HL = address of directory entry