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| -rw-r--r-- | README.md | 10 |
1 files changed, 2 insertions, 8 deletions
@@ -399,14 +399,8 @@ stack overflows are a real danger here. It is generally a good idea to reserve some bytes for argument passing. For example, one might reserve `$00-$04` to variables named like `zp_arg0` to -`zp_arg4`. These memory arguments can then be considered like this: - -1. It's up to the caller to save values from these addresses if they are to be - preserved across calls. The called function might change these values during its - execution. -2. The called function can save to `zp_arg0` the returned value, and also to - `zp_arg1` if the returned value is 16 bit (little endian). In any case, and - as always, read the documentation for it. +`zp_arg4`. These memory arguments can then be consumed/owned in different +ways. In any case, be consistent and document this clearly on each function. ## Using the `x` or `y` registers for code that has to "select" |