| ??? 11/19/07 15:39 Read: times |
#147191 - Check CJNE Responding to: ???'s previous message |
Nimish Dave said:
; CJP jumps if arg1 > arg2 cjp MACRO dato1,dato2,salto cjne dato1,dato2,$+6 sjmp $+7 jc $+5 ljmp salto ENDM What is "salto" here ? If the cjne instruction is satisfied(as dato1>dato2) the program will jump to $+6 ,it would also jump if dato1 Checkout the definition of CJNE - not only does it compare equality, but als sets the carry flag if arg1 is less than arg 2 (in the above example). Thus if dato1 = dato2 we jump out of the macro. If dato1 != dato2 we jump to the line "jc $+5" and check the Carry flag. If it's set (dato1 < dato2) we jump to the end of the macro. If it's clear (dato1 > dato2) we take the long jump to salto (literally 'jump' in Spanish). |
| Topic | Author | Date |
| Extended opcode | 01/01/70 00:00 | |
| You mean this? | 01/01/70 00:00 | |
| Translating | 01/01/70 00:00 | |
| Updated | 01/01/70 00:00 | |
| Macro | 01/01/70 00:00 | |
| Macro | 01/01/70 00:00 | |
| Macro - widespread, general term. | 01/01/70 00:00 | |
| The idea is | 01/01/70 00:00 | |
| Does it works..? | 01/01/70 00:00 | |
| Check CJNE | 01/01/70 00:00 | |
Thanks Robert | 01/01/70 00:00 |