NEC PD750008 - Manual (Page 277)

257
CHAPTER 11 INSTRUCTION SET
Special
In
Mne-
Number
Machine
Address-
struc-
monic
Operand of
cycle
Operation ing Skip condition
tion bytes area
GETI Notes1, 2 taddr 1 3 • µPD750004 *10
When the TBR instruction is used
PC
11-0
<– (taddr)
3-0
+(taddr+1)
4 When the TCALL instruction is used
(SP–6)(SP–3)(SP–4) <– PC
11-0
(SP–5) <– 0, 0, 0, 0
(SP–2) <– x, x, MBE, RBE
PC
11-0
<– (taddr)
3-0
+(taddr+1)
SP <– SP–6
3 When an instruction other than Depends on the
the TBR or TCALL instruction is referenced
used instruction
Execution of (taddr)(taddr+1)
instruction
3 • µPD750006, µPD750008
When the TBR instruction is used
PC
12-0
<– (taddr)
4-0
+(taddr+1)
4 When the TCALL instruction is used
(SP–6)(SP–3)(SP–4) <– PC
11-0
(SP–5) <– 0, 0, 0, PC
12
(SP–2) <– x, x, MBE, RBE
PC
12-0
<– (taddr)
4-0
+(taddr+1)
SP <– SP–6
3 When an instruction other than Depends on the
the TBR or TCALL instruction is referenced
used instruction
Execution of (taddr)(taddr+1)
instruction
3 • µPD75P0016
When the TBR instruction is used
PC
13-0
<– (taddr)
5-0
+(taddr+1)
4 When the TCALL instruction is used
(SP–6)(SP–3)(SP–4) <– PC
11-0
(SP–5) <– 0, 0, PC
13
, PC
12
(SP–2) <– x, x, MBE, RBE
PC
13-0
<– (taddr)
5-0
+(taddr+1)
SP <– SP–6
3 When an instruction other than Depends on the
the TBR or TCALL instruction is referenced
used instruction
Execution of (taddr)(taddr+1)
instruction
Notes 1. The shaded portion is supported in Mk II mode only. The other portions are
supported in Mk I mode only.
2. The TBR and TCALL instructions are assembler pseudo instructions to define tables used for
GETI instructions.