Difference between revisions of "83Plus:Ports:24"
From WikiTI
KermMartian (Talk | contribs) (→Write Values) |
KermMartian (Talk | contribs) (→Synopsis) |
||
| Line 8: | Line 8: | ||
'''Function:''' Flash Execution Limits High Bit | '''Function:''' Flash Execution Limits High Bit | ||
| − | Bit 0 of this port forms the high bit of page number for port | + | Bit 0 of this port forms the high bit of page number for port 22. Bit 1 of this port forms the high bit of the page number for port 23. Therefore, this port supports 8 MB flash chips. |
Since no 8 MB flash chip exists, this port in effect overrides [[83Plus:Ports:23|port 23]] and is overridden by port [[83Plus:Ports:22|port 22]]. | Since no 8 MB flash chip exists, this port in effect overrides [[83Plus:Ports:23|port 23]] and is overridden by port [[83Plus:Ports:22|port 22]]. | ||
Revision as of 21:36, 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 22. Bit 1 of this port forms the high bit of the page number for port 23. 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.
