| ??? 05/27/04 07:42 Read: times |
#71318 - DO *NOT* DO THIS! Responding to: ???'s previous message |
Dan Henry said:
I won't comment on the wisdom of relying on CY to behave the way you expect But that is the key issue here! You CANNOT rely on the content of the Carry Flag in 'C'! http://www.8052.com/forum/read.phtml?id=62273 If you really need to rely on specific instructions and/or specific values in specific processor registers, you MUST use assembler! http://www.8052.com/forum/read.phtml?id=68927 Dropping a bit of inline assembler into a 'C' file is little better - you are still relying on what you hope the compiler may have left in the registers. Do it properly in a proper assembler module Or, understand the 'C' language properly, and look at the standard operators and library functions included with the compiler. In Keil, look at the Intrinsic Functions |
| Topic | Author | Date |
| Rotate thru carry in C | 01/01/70 00:00 | |
| RE: Rotate thru carry in C | 01/01/70 00:00 | |
| RE: Rotate thru carry in C | 01/01/70 00:00 | |
| RE: Rotate thru carry in C | 01/01/70 00:00 | |
| RE: Rotate thru carry in C | 01/01/70 00:00 | |
| RE: Rotate thru carry in C | 01/01/70 00:00 | |
| DO *NOT* DO THIS! | 01/01/70 00:00 | |
| RE: DO *NOT* DO THIS! | 01/01/70 00:00 | |
| RE: Rotate thru carry in C | 01/01/70 00:00 | |
| RE: Rotate thru carry in C | 01/01/70 00:00 | |
| Wrong approach. | 01/01/70 00:00 | |
| RE: so often | 01/01/70 00:00 | |
| Also on the Keil forum | 01/01/70 00:00 | |
Link trouble again | 01/01/70 00:00 |