Chapter 15. D10V Dependent Features

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15.2.4. Register Names

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 Pairs

r0 r1

r2 r3

r4 r5

r6 r7

r8 r9

r10 r11

r12 r13

r14 r15

Register names are not case sensitive.

The D10V also has predefined symbols for these control registers and status bits:

psw

Processor Status Word

bpsw

Backup Processor Status Word

pc

Program Counter

bpc

Backup Program Counter

rpt_c

Repeat Count

rpt_s

Repeat Start address

rpt_e

Repeat End address

mod_s

Modulo Start address

mod_e

Modulo End address

iba

Instruction Break Address

f0

Flag 0