JPC: Difference between revisions
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'''JPC''' is an assembly instruction. It | '''JPC''' is an assembly instruction. It increments the [[X register]] by one. If the X register is positive or zero (bit 15 = 0), 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 == | == References == | ||
Revision as of 13:08, 31 May 2010
| JPC | |
|---|---|
| Description | Count and jump if X register is positive or zero. |
| Format | JPC <disp.> |
| Code | 132 0008 |
| Affected | (X):=(X)+1, If (X)>=0 (P):=(P)+Δ |
| Type | User |
| Architecture | ND-100, ND-110 |
JPC is an assembly instruction. It increments the X register by one. If the X register is positive or zero (bit 15 = 0), 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
- 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