You can use the predefined symbols ‘ r0 ’ through ‘ r15 ’ to refer to the D10V registers. You can also use ‘ sp ’ as an alias for ‘ r15 ’. The accumulators are ‘ a0 ’ and ‘ a1 ’. There are special register-pair names that may optionally be used in opcodes that require even-numbered registers. Register names are not case sensitive.
Register Pairs
r0-r1
r2-r3
r4-r5
r6-r7
r8-r9
r10-r11
r12-r13
r14-r15
The D10V also has predefined symbols for these control registers and status bits:
psw
bpsw
pc
bpc
rpt_c
rpt_s
rpt_e
mod_s
mod_e
iba
f0
f1
c