IP2022 User’s Manual—Instruction Set Architecture www.ubicom.com 67 The following code example uses indirect addressing. 3.1.4 Indirect-with-Offset Addressing Indirect-with-offset addressing is used when bit 8 of the “fr” field is
set. The location of the operand is specified by a 7-bit unsigned
immediate from the “fr” field added to a 12-bit base address in a
pointer   register.   Addresses   from   0x000   to   0x01F   cannot   be
accessed reliably with this addressing mode, therefore it must not
be  used  for  this  purpose.  (Direct  addressing  should  be  used
instead.) When bit 7 of the “fr” field is clear, the DPH/DPL register (i.e. the
data pointer) is selected as the pointer register. The upper four bits
of the DPH register are not used. Figure 3-5 shows indirect-with-
offset  addressing  using  the  DPH/DPL  register  as  the  pointer
register. mov w,#0x03 ;load W with 0x03 mov iph,w ;load the high byte of the
;indirect pointer from W mov w,#0x85 ;load W with 0x85 mov ipl,w ;load the low byte of the
;indirect pointer from W mov w,(ip) ;load W with the contents of the
;memory location at address 0x385