Difference between revisions of "83Plus:Ports:24"
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=== Write Values === | === Write Values === | ||
| − | * Bit 0: High bit (bit 8) of port | + | * Bit 0: High bit (bit 8) of port 22 |
| − | * Bit 1: High bit (bit 8) of port | + | * Bit 1: High bit (bit 8) of port 23 |
* Bits 2-7: Toggleable, but no effect is apparent. These bits are currently unused. | * Bits 2-7: Toggleable, but no effect is apparent. These bits are currently unused. | ||
Revision as of 21:35, 14 March 2013
| This port only exists as a distinct port on the TI-83 Plus Silver Edition, the TI-84 Plus, and the TI-84 Plus Silver Edition. On the standard TI-83 Plus, it acts as a shadow of port 04. |
| This port is protected, which means user programs cannot ordinarily write to it directly. |
Synopsis
Port Number: 24h
Function: Flash Execution Limits High Bit
Bit 0 of this port forms the high bit of page number for port 23. Bit 1 of this port forms the high bit of the page number for port 24. Therefore, this port supports 8 MB flash chips.
Since no 8 MB flash chip exists, this port in effect overrides port 23 and is overridden by port port 22.
Write Values
- Bit 0: High bit (bit 8) of port 22
- Bit 1: High bit (bit 8) of port 23
- Bits 2-7: Toggleable, but no effect is apparent. These bits are currently unused.
Read Values
- Bit 0-7: Reads whatever was last written
Comments
This port does not exist on the standard 83 Plus. See ports 5 and 16 instead.
