DSP Core Reference Manual

Static Programming Rules
SC140 DSP Core Reference Manual 7-19
Rule A.7
A RTSTK or RTSTKD instruction cannot be grouped in a VLES with a MOVE-like instruction that reads
the EMR register. For mutually exclusive IFc subgroups in a VLES, this rule applies independently to each
subgroup.
Example 7-29. NMID Update to EMR Read
rtstk move.l emr,d0 ;not allowed
7.5.5 Delayed COF Rules
Rule D.1
The following instructions are not allowed in a delay slot:
• COF instructions
• STOP and WAIT
• DI
• DEBUG
Example 7-30. Instructions in a Delay Slot
jmpd r1
jmp r2 ;not allowed