JXN

From NDWiki
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
JXN
Description Jump if X negative
Format JXN <disp.>
Code 133 4008
Affected If X<0 P:=P+Δ
Type User
Architecture ND-100, ND-110

JXN is an assembly instruction. If the X register is negative (bit 15 = 1), it jumps the program execution to the address of the program counter (P register) plus the value of displacement, which can be between -128 to 127. Else it continues the program execution at (P) + 1.

References