Epson S1C63000 CALZ imm8, CLR [addr6],imm2, 1 cycle, 2 cycles, Call subroutine at location imm8, CLR [addr6],imm2 Clear bit imm2 in location [addr6]

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 (2imm2)
(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

S1C63000 CORE CPU MANUAL EPSON 83