Try the Barnes textbook in combination with the Reference Manual.

At 11:05 PM 1/27/99 +0300, Igor Izvarin wrote:
>Hello,
>
>My question looks very simple: Ada has several Input/Output packages -
>DIRECT_IO, TEXT_IO, FLOAT_IO, MODULAR_IO, INTEGER_IO, FIXED_IO, DECIMAL_IO,
>EMERATION_IO, COMPLEX_IO, SEQUENTIAL_IO, STORAGE_IO, STREAM_IO (all???).
>Where I can find GOOD explanation about all these packages and when and how
>to use them?
>
>With best regards,
>Igor Izvarin