NEC PD750008 - Manual (Page 276)

256
µPD750008 USER'S MANUAL
In
Mne-
Number
Machine
Address-
struc-
monic
Operand of
cycle
Operation ing Skip condition
tion bytes area
SEL RBn 2 2 RBS <– n (n=0 - 3)
MBn 2 2 MBS <– n (n=0, 1, 15)
GETI Note taddr 1 3 • µPD750004
*10
When the TBR instruction is used
PC
11-0
<– (taddr)
3-0
+(taddr+1)
When the TCALL instruction is used
(SP–4)(SP–1)(SP–2) <– PC
11-0
(SP–3) <– MBE, RBE, 0, 0
PC
11-0
<– (taddr)
3-0
+(taddr+1)
SP <– SP–4
When an instruction other than Depends on the
the TBR or TCALL instruction is referenced
used instruction
Execution of (taddr)(taddr+1)
instruction
• µPD750006, µPD750008
When the TBR instruction is used
PC
12-0
<– (taddr)
4-0
+(taddr+1)
When the TCALL instruction is used
(SP–4)(SP–1)(SP–2) <- PC
11-0
(SP–3) <– MBE, RBE, 0, PC
12
PC
12-0
<– (taddr)
4-0
+(taddr+1)
SP <– SP–4
When an instruction other than Depends on the
the TBR or TCALL instruction is referenced
used instruction
Execution of (taddr)(taddr+1)
instruction
• µPD75P0016
When the TBR instruction is used
PC
13-0
<– (taddr)
5-0
+(taddr+1)
When the TCALL instruction is used
(SP–4)(SP–1)(SP–2) <- PC
11-0
(SP–3) <– MBE, RBE, PC
13
, PC
12
PC
13-0
<– (taddr)
5-0
+(taddr+1)
SP <– SP–4
When an instruction other than Depends on the
the TBR or TCALL instruction is referenced
used instruction
Execution of (taddr)(taddr+1)
instruction
Note The TBR and TCALL instructions are assembler pseudo instructions to define tables used for GETI
instructions.
Special