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You can use the predefined symbols `r0', `r1', `r2', `r3', `r4', `r5', `r6', and `r7' to refer to the H8/500 registers.
The H8/500 also has these control registers:
cp
dp
bp
tp
ep
sr
ccr
All registers are 16 bits long. To represent 32 bit numbers, use two
adjacent registers; for distant memory addresses, use one of the segment
pointers (cp
for the program counter; dp
for
r0
--r3
; ep
for r4
and r5
; and
tp
for r6
and r7
.