Purpose: Read base address of I/O block
Call address: $FFF3 (hex) 65523 (decimal)
Registers: none Memory: system map Flags: none Calls: noneResults:
Registers: .X = lsb of I/O block .Y = msb of I/O block Memory: none Flags: none
Description: IOBASE is not used in the C128 but is included for compatibility and completeness. It returns the address of the I/O block in .X and .Y.
JSR $FFF3 ;find the I/O block