IP2022 User’s Manual—Instruction Set Architecture www.ubicom.com 165 IWRITEI Write Ext./Program RAM and Increment Operation: (ADDRX || ADDRH || ADDRL) = DATAH || DATAL
ADDRL = ADDRL + 2 Bits affected: None Opcode: 0000 0000 0001 1100 Description: This instruction transfers data from data memory
to  external  RAM  or  program  RAM.  The  24-bit
ADDRX/ADDRH/ADDRL   register   specifies   the
address of a 16-bit word which is loaded with the
contents of the DATAH/DATAL register, then the
address is incremented by 2. If the address is not
in external RAM or program RAM, no operation is
performed.  The  instruction  is  blocking  (i.e.  no
other instructions may execute until it completes)
when  it  is  used  to  write  program  RAM.    The
instruction is non-blocking when it is used to write
external RAM. Cycles: 4 (blocking)/1 (non-blocking)