diff options
Diffstat (limited to 'src/gos/gos_options.h')
| -rw-r--r-- | src/gos/gos_options.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/gos/gos_options.h b/src/gos/gos_options.h index e0187e6a..bdb2b139 100644 --- a/src/gos/gos_options.h +++ b/src/gos/gos_options.h @@ -260,6 +260,21 @@ #ifndef GFX_EMULATE_MALLOC #define GFX_EMULATE_MALLOC GFXOFF #endif + /** + * @brief Is the maximum memory allocation less than 64K + * @details Defaults to GFXOFF + * @note Many CPU's cannot allocate memory blocks larger than 64K. Note that this + * is not necessarily mean that a pointer is 16 bit but a 16 bit pointer + * will definitely impose this restriction. An example is the x86 processor + * running in "FAR" mode. Pointers are 32 bit but the maximum size memory block is 64K. + * @note Specifying this only leads to code and memory optimisations. uGFX should still work + * on these processors even if it is not set although obviously an attempted memory + * allocation larger than 64K will fail. + */ + #ifndef GFX_MEM_LT64K + #define GFX_MEM_LT64K GFXOFF + #endif + /** @} */ #endif /* _GOS_OPTIONS_H */ |