Register parameters
RST 20H, DEFW $DA06
IN: C = number of bytes to copy (0 ... 255) HL = local source pointer BDE = extended destination pointer OUT: Fc = 0 always Registers changed after return: A.BCDEHL/IXIY same .F....../.... different
Notes
Bank boundary crossing of destination is automatically handled, if number of bytes to read passes between to banks then B is incremented (typically when writing contents from a File Entry on a File Card).
Bugs
The HL source pointer has to be in segment 0 or 1. The call does not work if the source pointer defines memory in segments 2 or 3.
Related calls
GN_Cme, compare null-terminated strings, one local, one extended
GN_Rbe, read byte at extended address
GN_Wbe, write byte at extended address
OS_Bhl, copy bytes from extended address