| ??? 08/24/05 06:36 Modified: 08/24/05 07:08 Read: times |
#99943 - Thinking time Responding to: ???'s previous message |
hi,
Jan Waclawek said:
Proggrammer's manual, Philips' version, page 13, Table 7 top, lists all instructions that affects flag settings. There is no MOV there.
Jan, I have not saw the manual from Philips, however most manuals (I have Intel and Atmel here) indicate only flags C, OV and AC in table "Instructions that Affect Flag Settings". In fact, there are at least two cases when MOV modifyes PSW: 1) MOV PSW,... 2) MOV A,... In first case, PSW is modified directly. In second example, loading of accumulator does modify flag P (parity). The only reason why this is not important in our case is that parity bit is auto-restored with POP ACC at the end of ISR. Regards, Oleg |
| Topic | Author | Date |
| Timer miscounts? | 01/01/70 00:00 | |
| Counter counts upwards | 01/01/70 00:00 | |
| solved | 01/01/70 00:00 | |
| More problems | 01/01/70 00:00 | |
| further optimisation | 01/01/70 00:00 | |
| Right here: | 01/01/70 00:00 | |
| Bible time... | 01/01/70 00:00 | |
| you are right | 01/01/70 00:00 | |
| Thinking time | 01/01/70 00:00 | |
| how precise "bibles" are | 01/01/70 00:00 | |
| Actually, PSW IS affected | 01/01/70 00:00 | |
| bible time again and again | 01/01/70 00:00 | |
| Not there??????? | 01/01/70 00:00 | |
| wilbers.asm updates | 01/01/70 00:00 | |
| The shame of it all! | 01/01/70 00:00 | |
| I am sorry | 01/01/70 00:00 | |
| old farts make mistakes too | 01/01/70 00:00 | |
| No offense taken | 01/01/70 00:00 | |
wow what a replies | 01/01/70 00:00 |