| ??? 12/15/04 14:41 Read: times |
#83152 - Re: asm VS C Responding to: ???'s previous message |
@Chuck
I find it easy to migrate from 8051 to avr, and even to PIC asm code in since I am familiar with assembly. on reusing an 8051 assembler routine on the AVR you must completely rewrite line for line. But on C you must rewrite almost nothing !!! Only hardware access must be modified a little (e.g. timers, ports, UART), which is typically only 10% or less. I just do not see the advantage to C programming, especially when assembly makes so much more sense to me anyways. Using C increase the reliabilty dramatically ! No longer registers are accidentally overwritten by other functions, no longer unbalanced or misordered PUSH/POP cause many days of trouble shooting and millions of gray hairs ! C do all the jobs of parameter passing, memory overlaying, interrupt calling absolutely perfectly and no human can do it approximately successful. I disassembled a some 8051 C code I downloaded and a very simple delay loop wasted so much code space in C it made me wonder why people use C??? You must look on a complete real world application ! To pick up only a certain piece of code can only give wrong results. A well written C program need only about 5..50% more code space and runs only about 5..50% slower. But a C program can also run twice as fast as an assembler program, e.g. my self written division routine was two times slower as the routine inside the compiler library. Peter |
| Topic | Author | Date |
| asm vs C | 01/01/70 00:00 | |
| HLL | 01/01/70 00:00 | |
| asm vs C | 01/01/70 00:00 | |
| C and other HLLs | 01/01/70 00:00 | |
| modern - productive | 01/01/70 00:00 | |
| Lunch | 01/01/70 00:00 | |
| Speed writing vs speed running. | 01/01/70 00:00 | |
| C | 01/01/70 00:00 | |
| Belt or suspenders? | 01/01/70 00:00 | |
| Learn C Then... | 01/01/70 00:00 | |
| beware | 01/01/70 00:00 | |
| This advice is great | 01/01/70 00:00 | |
| I love C !!! | 01/01/70 00:00 | |
| Easy migration | 01/01/70 00:00 | |
| 3rd party | 01/01/70 00:00 | |
| Having recently started converting... | 01/01/70 00:00 | |
| Learning C for tte 8051 and 8-bit uC | 01/01/70 00:00 | |
| Obviously there is a reason... | 01/01/70 00:00 | |
| as to reasons | 01/01/70 00:00 | |
| Obviously there is a reason... | 01/01/70 00:00 | |
| 8051 vs C :) | 01/01/70 00:00 | |
| 8051 efficiency | 01/01/70 00:00 | |
| a 51 for handling large amount of data | 01/01/70 00:00 | |
| 8051 vs C - answer is wrong | 01/01/70 00:00 | |
| addendum to post Andys above | 01/01/70 00:00 | |
| asm.vs.C forever | 01/01/70 00:00 | |
| click, click, click | 01/01/70 00:00 | |
| Eh?? | 01/01/70 00:00 | |
| 8051 vs C - answer is wrong | 01/01/70 00:00 | |
| Don't believe all you hear! | 01/01/70 00:00 | |
| the C myth | 01/01/70 00:00 | |
| myth | 01/01/70 00:00 | |
| Then Don't Do that | 01/01/70 00:00 | |
| Exactly! | 01/01/70 00:00 | |
| why only? | 01/01/70 00:00 | |
| Right tool for the Job | 01/01/70 00:00 | |
| asm VS C | 01/01/70 00:00 | |
| Which C? | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| Handly, But | 01/01/70 00:00 | |
| Both i think | 01/01/70 00:00 | |
| Neither! | 01/01/70 00:00 | |
| Compiler on a floppy? | 01/01/70 00:00 | |
| Why do people use C? | 01/01/70 00:00 | |
| Code Complete | 01/01/70 00:00 | |
| Ironic | 01/01/70 00:00 | |
| Re: asm VS C | 01/01/70 00:00 | |
| re:asm vs C | 01/01/70 00:00 | |
| derivatives of same | 01/01/70 00:00 | |
| portability | 01/01/70 00:00 | |
| re: portability | 01/01/70 00:00 | |
| (non-)portability | 01/01/70 00:00 | |
| re: | 01/01/70 00:00 | |
re: | 01/01/70 00:00 | |
| What do you want? | 01/01/70 00:00 | |
| HLL | 01/01/70 00:00 | |
| Personal dislike... | 01/01/70 00:00 | |
| A comment to ASM versus C | 01/01/70 00:00 |