Calz imm8, Clr [addr6],imm2 – Epson S1C63000 User Manual
Page 89
S1C63000 CORE CPU MANUAL
EPSON
83
CHAPTER 4: INSTRUCTION SET
CALZ imm8
Call subroutine at location imm8
1 cycle
Function:
([(SP1-1)*4+3]~[(SP1-1)*4])
←
PC + 1, SP1
←
SP1 - 1, PC
←
imm8
Saves the address next to this instruction to the stack as a return address, then unconditionally
calls the subroutine started from the address (0000H–00FFH) specified with the imm8.
Code:
Mnemonic
MSB
LSB
CALZ imm8
0
0
0
1
1 i7 i6 i5 i4 i3 i2 i1 i0
0300H–03FFH
Flags:
E
I
C
Z
↓
–
–
–
Mode:
Immediate data
Extended addressing: Invalid
CLR [addr6],imm2
Clear bit imm2 in location [addr6]
2 cycles
Function:
[addr6]
←
[addr6]
∧
not (2
imm2
)
(addr6 = 0000H–003FH or FFC0H–FFFFH)
Clears the bit specified with the imm2 in the data memory specified with the addr6 to "0".
Code:
Mnemonic
MSB
LSB
CLR [00addr6],imm2 1
0
1
0
0 i1 i0 a5 a4 a3 a2 a1 a0 1400H–14FFH
CLR [FFaddr6],imm2 1
0
1
0
1 i1 i0 a5 a4 a3 a2 a1 a0 1500H–15FFH
Flags:
E
I
C
Z
↓
–
–
↕
Mode:
Src: Immediate data
Dst: 6-bit absolute
Extended addressing: Invalid