PRELIMINARY
Assembly Source for Algorithms
| BCND | FL_WRITE, NEQ ;If ACC<>0, then flwrite. | ||
*Else, continue until until done with row. |
| |||
| BANZ | NEXT_IVERS | ;Loop 32 times. |
|
| SPLK | #STOP,BASE_0 | ;Flash STOP command. |
|
| CALL | SET_MODE | ;Disable flash commands. | |
|
|
| ;If here then test passed. | |
DONE | RET |
| ;Return to calling code. | |
* If here, then an error has occurred. |
| |||
EXIT | SPLK | #1,ERROR | ;Update error flag |
|
| SPLK | #STOP,BASE_0 | ;Flash STOP command. |
|
| CALL | SET_MODE | ;Disable flash commands. | |
| CALL | ARRAY | ;ACCESS FLASH ARRAY |
|
| B | DONE | ;Get outa here. |
|
| .page |
|
|
|
*************************************************** | ||||
* FL_WRITE: This routine performs a fl_write on | * | |||
* the flash until a maximum is reached. The | * | |||
* array is defined by the variable FL_ST | * | |||
* and the segment(s) is defined by the PROTECT | * | |||
* mask. The following resources are used for | * | |||
* temporary storage: |
| * | ||
* | AR0 | Used for comparison | * | |
* | AR1 | Used for pulse count (Global) | * | |
* | AR6 | Parameter passed to DELAY | * | |
* | BASE_0 | Parameter passed to SET_MODE | * | |
* | BASE_2 | Used for flw cmd | * | |
* | BASE_3 | Used for EXE + flw cmd | * | |
*************************************************** | ||||
FL_WRITE |
|
|
| |
| SPLK | #STOP,BASE_0 ;Flash STOP command. |
| |
| CALL | SET_MODE | ;Disable flash commands. | |
| LACL | PROTECT | ;Get sector_prot mask. |
|
| OR | #FLWR | ;Or in fl_write cmd. |
|
| SACL | BASE_2 | ;BASE_2 = fl_write cmd. |
|
| OR | #FLWR_EX | ;Or in EXE + fl_write cmd. | |
| SACL | BASE_3 | ;BASE_3 = EXE + fl_write cmd. | |
*Set the flash±write command. |
| |||
| CALL | REGS | ;Access flash regs. |
|
| LACC | FL_ST | ;ACC => SEG_CTL. |
|
| TBLW | BASE_2 | ;Initiate fl_write. |
|
| LAR | AR6,#D10 | ;Set delay. |
|
| CALL | DELAY,*,AR6 | ;Wait,10US flw stabilization time. | |
*Set the EXE bit (start flash±write pulse). |
| |||
| TBLW | BASE_3 | ;Start flw pulse. |
|
| LAR | AR6,#D7K | ;Set delay to 7 ms. |
|
| CALL | DELAY,*,AR6 | ;WAIT,7 ms. |
|
| LAR | AR6,#D7K | ;Set delay to 7 ms. |
|
| CALL | DELAY,*,AR6 | ;WAIT 7 ms. |
|
*A 14±mS flash write pulse has been applied. |
| |||
| SPLK | #STOP,BASE_0 ;Flash STOP command. |
| |
| CALL | SET_MODE | ;Disable flash commands. | |
| MAR | *,AR1 |
|
|
| MAR | *+ | ;Increment flw count. |
|
PRELIMINARY | Assembly Source Listings and Program Examples |
