| ??? 03/10/05 00:51 Read: times |
#89376 - Hmmm.... interesting indeed! Responding to: ???'s previous message |
I would have quessed 7 based on how I think the processor works. The PUSH instruction is in the form of PUSH direct address. I'm guessing the PLA first reads the contents of the direct address into a temp register. Then inc's SP. Then the contents of SP are used in an indirect memory access to write onto the stack.
I'm a little bit surprized that the V51RD2 gives a different answer, but not too surprized since it comes from a different core. I'd be real interested to see what it does with an LPC900 part. I'll read below to see if someone did it. Incidentally Jan, all of the Philips parts with IAP have a function call to allow you to read the device ids. You can use them to determine which part you have. Bill |
| Topic | Author | Date |
| PUSH SP | 01/01/70 00:00 | |
| 8 | 01/01/70 00:00 | |
| 8??????????????????????????????????? | 01/01/70 00:00 | |
| On jokes, reasons &al. | 01/01/70 00:00 | |
| no, you don't | 01/01/70 00:00 | |
| I do not know and do not think I should | 01/01/70 00:00 | |
| Non-compliance? | 01/01/70 00:00 | |
| Theory vs. practice | 01/01/70 00:00 | |
| Jan is right: 7 | 01/01/70 00:00 | |
| I did not say 7! | 01/01/70 00:00 | |
| Interesting | 01/01/70 00:00 | |
| POP SP? :-) | 01/01/70 00:00 | |
| POP SP | 01/01/70 00:00 | |
| MOV SP,#SP | 01/01/70 00:00 | |
| exceptions and rules | 01/01/70 00:00 | |
| MOV A,ACC | 01/01/70 00:00 | |
| xxx a,acc | 01/01/70 00:00 | |
| if the "Bible says"... | 01/01/70 00:00 | |
| more interesting | 01/01/70 00:00 | |
| Hmmm.... interesting indeed! | 01/01/70 00:00 | |
| native doing | 01/01/70 00:00 | |
| Makes sense to me | 01/01/70 00:00 | |
| POP SP | 01/01/70 00:00 | |
| Output of SP | 01/01/70 00:00 | |
| Simulators | 01/01/70 00:00 | |
| simulators give me 7 7 | 01/01/70 00:00 | |
| 7 7 | 01/01/70 00:00 | |
| spent for which purpose | 01/01/70 00:00 | |
| Fun... | 01/01/70 00:00 | |
| Atmel and Philips | 01/01/70 00:00 | |
SiLabs F120 | 01/01/70 00:00 |