専用 せんようメモリじゃなかったです
yomidashi sen'yōmemorijanakattadesu

Noun
Desu Copula

The polite, past negative form of 読み出し専用メモリ

1. Was not read-only memory.; Wasn't read-only memory.

Past/Perfective
Negative
Polite
Casual Register
Computing