=> R0 = offset (0 - &FFF) from podule's address space base.
R1 = number of bytes
R2 = pointer to buffer
R3 = ROM section
This SWI reads bytes directly from an expansion card or extension ROM's address space, typically to read hardware registers. Use Podule_ReadBytes to read from an expansion card's code space.
See PRM 4, page 147.
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