specified in the effective address field is always updated independently of the state of the
bit. All address register indirect addressing modes may be used to reference the
source operand S. Absolute short and I/O short addressing modes may also be used .
Restrictions: A JSCLR instruction used within a DO loop cannot specify the loop
address (LA) as its target.
A JSCLR located at LA, LA–1, or LA–2 of a DO loop, cannot specify the program control-
ler registers SR, SP, SSH, SSL, LA, or LC as its target.
JSCLR SSH or JSCLR SSL cannot follow an instruction that changes the SP.
A JSCLR instruction cannot be repeated using the REP instruction.
Explanation of Example: In this example, program execution is transferred to the sub-
routine at absolute address P:$1357 in program memory if bit 1 of the external I/O loca-
tion Y:<<$FFE3 is a zero. If the specified bit is not clear, no jump is taken and the
program counter (PC) is incremented by 1.
Jump to Subroutine if Bit Clear
;go sub. at P:$1357 if bit 1 in Y:$FFE3 is clear
INSTRUCTION SET DETAILS
A - 123