Difference between revisions of "83Plus:Ports:09"
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| − | + | [[Category:83Plus:Ports:By_Address|09 - Link Assist Status]] | |
| − | + | [[Category:83Plus:Ports:By_Name|Link Assist Status]] | |
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== Synopsis == | == Synopsis == | ||
| − | '''Port Number:''' | + | '''Port Number:''' 09h |
| − | '''Function:''' | + | '''Function:''' Link Assist Status |
| − | This port | + | This port gives information on the status of the hardware link assist. |
=== Read Values === | === Read Values === | ||
| − | * [ | + | * Bit 0: ''unknown'' |
| + | * Bit 1: ''unknown'' | ||
| + | * Bit 2: ''unknown'' | ||
| + | * Bit 3: Set if the assist is currently receiving data | ||
| + | * Bit 4: Set if the assist has read a complete byte (which can be read from [[83Plus:Ports:0A|port 0A]]) | ||
| + | * Bit 5: Set if the assist is ready to write data (via [[83Plus:Ports:0D|port 0D]]) | ||
| + | * Bit 6: Set if there was an error during transmission | ||
| + | * Bit 7: ''unknown'' | ||
=== Write Values === | === Write Values === | ||
| − | + | ''None'' | |
| − | + | ||
| − | '' | + | |
== Comments == | == Comments == | ||
| − | + | This port only exists on the 83+ SE and the 84+. | |
| − | + | ||
| − | + | ||
| − | + | ||
== Credits and Contributions == | == Credits and Contributions == | ||
| − | * ''' | + | * '''Michael Vincent:''' Original documentation of the link assist |
Revision as of 18:31, 28 March 2005
Synopsis
Port Number: 09h
Function: Link Assist Status
This port gives information on the status of the hardware link assist.
Read Values
- Bit 0: unknown
- Bit 1: unknown
- Bit 2: unknown
- Bit 3: Set if the assist is currently receiving data
- Bit 4: Set if the assist has read a complete byte (which can be read from port 0A)
- Bit 5: Set if the assist is ready to write data (via port 0D)
- Bit 6: Set if there was an error during transmission
- Bit 7: unknown
Write Values
None
Comments
This port only exists on the 83+ SE and the 84+.
Credits and Contributions
- Michael Vincent: Original documentation of the link assist
