Difference between revisions of "83Plus:Ports:8B"
From WikiTI
Thepenguin77 (Talk | contribs) (Created page with '8B - USB Events Mask USB Events Mask {{84P-Only Port|0B}} == Synopsis == '''Port Number:''' 8Bh '''Functio…') |
(Added information gleaned from HDRC driver) |
||
| Line 3: | Line 3: | ||
== Synopsis == | == Synopsis == | ||
'''Port Number:''' 8Bh | '''Port Number:''' 8Bh | ||
| + | |||
| + | '''Equivalent HDRC port:''' MGC_O_HDRC_INTRUSBE (0x0B) | ||
'''Function:''' USB Events Mask | '''Function:''' USB Events Mask | ||
Revision as of 12:59, 14 August 2013
| This port only exists on the the TI-84 Plus and the TI-84 Plus Silver Edition. On the standard TI-83 Plus, it acts as a shadow of port 0B. On the TI-83 Plus Silver Edition, this port has no effect. |
Synopsis
Port Number: 8Bh
Equivalent HDRC port: MGC_O_HDRC_INTRUSBE (0x0B)
Function: USB Events Mask
This port is a mask for what errors port 86 will report.
Set the corresponding bits here to receive notifications via port 86.
Values
- Bit 0: Possibly set if the bus has been suspended (no activity for some length of time.)
- Bit 1: Unknown; probably related to HNP and/or SRP.
- Bit 2: Set if a bus reset has occurred (both D+ and D? pulled low for some length of time.)
- Bit 3: Unknown.
- Bit 4: Possibly set if a device has been connected (D+, or maybe D?, pulled high for some length of time.)
- Bit 5: This usually indicates that something was unplugged.
- Bit 6: Unknown; probably related to HNP.
- Bit 7: Calculator cannot provide sufficient power. Usually caused by low batteries, although, some devices cause this every time.
