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CHAPTER 11 INSTRUCTION SET
290 User’s Manual U10676EJ3V0UM
11.4.15 Special instructions
SEL RBn
Function: RBS ← n n = N1-0: 0-3
Sets 2-bit immediate data n to the register bank select register (RBS).
SEL MBn
Function: MBS ← n n = N3-0: 0, 4, 15
Transfers 4-bit immediate data n to the memory bank select register (MBS).
GETI taddr
Function: taddr = T5-0, 0: 20H to 7FH
[MkI mode]
• When table defined by TBR instruction is referenced
PC
11-0 ← (taddr)3-0 + (taddr+1)
• When table defined by TCALL instruction is referenced
(SP–1)
← PC7-4, (SP–2) ← PC3-0
(SP–3) ← MBE, RBE, 0, 0
(SP–4)
← PC11-8
PC11-0 ← (taddr)3-0 + (taddr+1)
SP ← SP–4
• When table defined by instruction other than TBR and TCALL is referenced
Executes instruction with (taddr) (taddr+1) as op code
[MkII mode]
• When table defined by TBR instruction is referenced
Note
PC11-0 ← (taddr)3-0 + (taddr+1)
• When table defined by TCALL instruction is referenced
Note
(SP–2) ← ×, ×, MBE, RBE
(SP–3) ← PC7-4, (SP–4) ← PC3-0
(SP–5) ← 0, 0, 0, 0, (SP–6) ← PC11-8
PC11-0 ← (taddr)3-0 + (taddr+1), SP ← SP–6
• When table defined by instruction other than TBR and TCALL is referenced
Executes instruction with (taddr) (taddr+1) as op code
Note The address specified by the TBR and TCALL instructions is limited to 0000H to 0FFFH.
I/II