JNC: Difference between revisions
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(JNC instruction) |
(Register notation uniformity fix) |
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|Format=JNC <[[displacement|disp.]]>'' | |Format=JNC <[[displacement|disp.]]>'' | ||
|Code=132 400 | |Code=132 400 | ||
|Affected= | |Affected=X:=X+1, If X<0 P:=P+Δ | ||
|Architecture=[[ND-100]], [[ND-110 CPU|ND-110]] | |Architecture=[[ND-100]], [[ND-110 CPU|ND-110]] | ||
}} | }} | ||
'''JNC''' is an assembly instruction. It | '''JNC''' is an assembly instruction. It increments the [[X register]] by one. 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]], that can be between -128 to 127. Else it continues the program execution at (P) + 1. | ||
== References == | == References == | ||
Latest revision as of 08:43, 21 March 2013
| JNC | |
|---|---|
| Description | Count and jump if X register is negative. |
| Format | JNC <disp.> |
| Code | 132 4008 |
| Affected | X:=X+1, If X<0 P:=P+Δ |
| Type | User |
| Architecture | ND-100, ND-110 |
JNC is an assembly instruction. It increments the X register by one. 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, that can be between -128 to 127. Else it continues the program execution at (P) + 1.
References
- Norsk Data Document ND–06.014.02 ND-100 REFERENCE MANUAL Page 139
- Norsk Data Document ND–06.029.01 ND-110 Instruction Set Page 80