| ??? 03/31/05 19:23 Read: times |
#90767 - Powers of Two Responding to: ???'s previous message |
Abhishek Singh said:
i think answer is in instruction encoding. may be on optimizing instruction set only three bits, which select one of the eight location of current selected chunk of the RAM can be addressed.
but why four banks i cant guess. I can understand making all the numbers powers of two but why 8 registers? Why not 4. Most other 8 bit microcontrollers from around that time had fewer registers e.g. Motorola with A,B,X and Y. And why 4 banks, why not just 2. What Surprises me is there is nothing in even the original bible about what you would use all these registers and banks for. Ian |
| Topic | Author | Date |
| Registers | 01/01/70 00:00 | |
| my guess | 01/01/70 00:00 | |
| Participation | 01/01/70 00:00 | |
| Old Age | 01/01/70 00:00 | |
| Old but stronger still | 01/01/70 00:00 | |
| just a guess | 01/01/70 00:00 | |
| Powers of Two | 01/01/70 00:00 | |
| when all was new | 01/01/70 00:00 | |
| push and pop | 01/01/70 00:00 | |
| passing | 01/01/70 00:00 | |
| Passing Parameters | 01/01/70 00:00 | |
| yes, with a monitor | 01/01/70 00:00 | |
| Register Overlaying??? | 01/01/70 00:00 | |
| Context | 01/01/70 00:00 | |
not necessarily | 01/01/70 00:00 | |
| my point was | 01/01/70 00:00 | |
| Sausages | 01/01/70 00:00 | |
| Sausage and Chips | 01/01/70 00:00 | |
| no instructions, but gates | 01/01/70 00:00 | |
| Many Gates? | 01/01/70 00:00 |