我现在在阅读PSoC Designer Assembly Language User Guide。
在4.16 Jump if No Carry中，说执行指令JNC后，PC的值由未执行JNC指令时的PC值加上expr：if(CF = 0){PC← PC + k},但是由下面的例子来看，应该是PC←(PC+1)+k.请问这是一个错误么？谢谢！
4.16 Jump if No Carry JNC
Description: If the Carry Flag is not set, jump to the address indicated by the sum of the
argument and the PC value. The JNC instruction uses a two-byte instruction
format where the lower nibble of the first byte is used for the upper 4
bits of the 12-bit relative address. This causes an effective 4-bit opcode.
Therefore, the following are all valid “opcode” bytes for the JNC instruction:0xE0, 0xE1, 0xE2,...,0xEF.
Arguments Operation Opcode Cycles Bytes
JNC expr 0xDx 5 2
CF Carry Flag unaffected.
ZF Zero Flag unaffected.
Example: 0000 _main:
0000 55 3C 02 [08] mov [3Ch], 2
0003 16 3C 02 [09] sub [3Ch], 2 ;2-1=0 CF=0, ZF=1
0006 D0 02 [05] jnc SubFun ; jump to SubFun
0008 30 [04] halt
0009
0009 SubFun:
0009 40 [04] nop |
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