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Appendix
MODH2 Compiler Directive
| Abbreviation | None. |
| Arguments | None. |
| Default | Dual data pointers are not used. |
| µVision | Options — Target — Use multiple DPTR registers. |
| Description | The MODH2 directive instructs the compiler to produce code for the additional hardware components (specifically, the additional data pointers) available in several Hynix and ST uPSD 33xx and 34xx devices. Using additional data pointers improves the performance of the memcpy, memmove, memcmp, strcpy, and strcmp library routines. |
| See Also | |
| Example | C51 SAMPLE.C MODH2 #pragma modh2 |
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