AN014: Coroutines in Propeller Assembly Language
Keywords:
coroutine, multi-tasking, cooperative tasks, interrupts, JMPRET, CALL, JMP, P8X32A
Abstract:
Abstract: The multicore P8X32A does not require traditional interrupts to manage multiple processes simultaneously; yet multi-tasking in a single core is still a handy option. Coroutines in Propeller Assembly language can support a pair of independent tasks in a single core (cog) through the use of the JMPRET instruction.
| Attachment | Size |
|---|---|
 AN014 Coroutines in Propeller Assembly PDF v1.0 PDF (5 pages) | 88.09 KB |
 AN014 Coroutines example code (zip archive, 1 file) | 2.43 KB |
Comments
kuroneko
Sat, 05/07/2011 - 16:47
Permalink
minor improvement re: runtime overhead
Momentarily the swap-over code is eating up too much time or rather more time than necessary. The user code jumps to it and then jumps back (8 cycles).
- replace [call #swap] with [jmpret swap,swap]
- replace [swap/swap_ret] with [swap long pong]
FullDuplexSerial uses this in a slightly modified form already so I'm surprised this AppNote uses a less efficient form.