| ??? 08/07/07 06:23 Read: times |
#142850 - It's implicit Responding to: ???'s previous message |
J.sathish Kumar said:
how the processor knows when decode the instruction, and decides this instruction requires one or two operands or no operand. It can tell from the 1st byte of the instruction. At decoding stage a simple 8 to 256 decoder is available. Is it? Where? if i give the instruction like mov a,b; then it is a decoder how it calculate the no of bytes See above also whether my assuption is right or wrong? What are your assumptions? Have you read the Instruction Set Manual? If you explained what you're actually trying to achieve, then people could help you better: Are you trying to build your own 8051 core? Or a simulator? Or a disassembler? Or what? This thread might help you: http://www.8052.com/forum/read.phtml?id=140817 |
| Topic | Author | Date |
| decoding | 01/01/70 00:00 | |
| It's implicit | 01/01/70 00:00 | |
| design | 01/01/70 00:00 | |
| A little ambitious? | 01/01/70 00:00 | |
| First stop - instruction set | 01/01/70 00:00 | |
| no intelligence | 01/01/70 00:00 | |
| Back to basics! | 01/01/70 00:00 | |
| Instruction decoding | 01/01/70 00:00 | |
| decoder unit | 01/01/70 00:00 | |
| State Machine | 01/01/70 00:00 | |
| more detail | 01/01/70 00:00 | |
| IF you've learned the "basics" of FPGA design ... | 01/01/70 00:00 | |
| Decoding | 01/01/70 00:00 | |
| in a traditionally anthropomorphic metaphor? | 01/01/70 00:00 | |
| My favourite anthropomorphic metaphor... | 01/01/70 00:00 | |
| My favorite ... | 01/01/70 00:00 | |
| Blither | 01/01/70 00:00 | |
| re: blither | 01/01/70 00:00 | |
| I always think that a blithering idiot.. | 01/01/70 00:00 | |
| anthropomorphic metaphor | 01/01/70 00:00 | |
| The same way ... | 01/01/70 00:00 | |
| Dictionary | 01/01/70 00:00 | |
If anyone is still listening... | 01/01/70 00:00 |