NEC 78K0 Series User Manual page 94

CHAPTER 4 MEMORY BANK SELECT FUNCTION (
• Software example
RAMD DSEG SADDR
R_BNKA: DS 2
R_BNKN: DS 1
MOV R_BNKN,#BANKNUM TEST
MOVW R_BNKA,#TEST
BR !BNKBR
:
:
BNKC CSEG AT
BNKBR:
MOV A,R_BNKN
MOV BANK,A
MOVW AX,R_BNKA
BR AX
BN3 CSEG BANK3
TEST:
MOV ⋅⋅⋅
:
:
END
Remark In the software example above, the AX register is destructed.
94
; Secures RAM for specifying a memory bank at the branch destination.
; Secures RAM for specifying a memory bank number at the branch destination.
; Stores the memory bank number at the branch destination in RAM.
; Stores the address at the branch destination in RAM.
; Branches to inter-memory bank branch processing.
7000H ;
;
; Specifies the memory bank number at the branch destination.
; Specifies the address at the branch destination.
; Branch
Preliminary User's Manual U17260EJ3V1UD
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PD78F0536, 78F0537, AND 78F0537D ONLY)