| ??? 09/05/08 07:08 Read: times |
#157967 - Yes, need for MAC depends on processor size Responding to: ???'s previous message |
Yes, a C51 is really helped by a MAC.
I noted earlier that: "It may often be enough with a reasonably fast multiply instruction of suitable width" (underline added now). It doesn't help if the multiply instruction is fast, if it takes a large number of instructions to implement a single mult-add of the required precision. A 32-bit processor obviously has it easier to manage quite well with just a fast multiply instruction. On an 8-bit processor, a MAC instruction helps a lot even if using a one-clocker, since few DSP-related problems are handled with just 8-bit resolution. |
| Topic | Author | Date |
| Dale Grover's DSP Microcontroller Book | 01/01/70 00:00 | |
| I've read it a while ago ... | 01/01/70 00:00 | |
| MAC is nice, but good multiply often enough | 01/01/70 00:00 | |
| Sure but ... | 01/01/70 00:00 | |
| Not manufacturers but books. | 01/01/70 00:00 | |
| Is really MAC so nice for 8bit MCU? | 01/01/70 00:00 | |
| It\'s nicer than not having one, ... | 01/01/70 00:00 | |
| Yes, need for MAC depends on processor size | 01/01/70 00:00 | |
Yes, a MAC is nice for 8 Bit MCU | 01/01/70 00:00 | |
| Comb Filter | 01/01/70 00:00 | |
| Depends. | 01/01/70 00:00 | |
| Bucket Brigade Comb Filter | 01/01/70 00:00 | |
| Any further questions ? | 01/01/70 00:00 |