User manual

251
CHAPTER 11 INSTRUCTION SET
In
Mne-
Number
Machine
Address-
struc-
monic
Operand of
cycle
Operation ing Skip condition
tion bytes area
BR BCXA 2 3 • µPD750004
*
11
PC
11-0
<– BCXA
Note 1
• µPD750006, µPD750008
PC
12-0
<– BCXA
Note 2
• µPD75P0016
PC
13-0
<– BCXA
Note 3
BRA
Note 1
!addr1 3 3 • µPD750004
*
11
PC
11-0
<– addr
• µPD750006, µPD750008
PC
12-0
<– addr
• µPD75P0016
PC
13-0
<– addr1
BRCB !caddr 2 2 • µPD750004
*
8
PC
11-0
<– caddr
11-0
• µPD750006, µPD750008
PC
12-0
<– PC
12
+caddr
11-0
• µPD75P0016
PC
13-0
<– PC
13, 12
+caddr
11-0
CALLA
Note 2
!addr1 3 3 • µPD750004
*
11
(SP–2) <– x, x, MBE,RBE
(SP–6)(SP–3)(SP–4) <– PC
11-0
(SP–5) <– 0, 0, 0, 0
PC
11-0
<– addr, SP <– SP–6
• µPD750006, µPD750008
(SP–2) <– x, x, MBE,RBE
(SP–6)(SP–3)(SP–4) <– PC
11-0
(SP–5) <– 0, 0, 0, PC
12
PC
12-0
<– addr, SP <– SP–6
• µPD75P0016
(SP–2) <– x, x, MBE,RBE
(SP–6)(SP–3)(SP–4) <– PC
11-0
(SP–5) <– 0, 0, PC
13
, PC
12
PC
13-0
<– addr1, SP <– SP–6
Note 1. The shaded portion is supported in Mk II mode only.
2. The shaded portion is supported in Mk II mode only. The other portions are supported in Mk
I mode only.
Branch
Subroutine stack control