Difference between revisions of "83Plus:Ports:0A"
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== Example == | == Example == | ||
| − | + | GetByteSE: | |
| − | + | in a,[[83Plus:Ports:04|(4)]] | |
| − | + | and 8 | |
| − | + | jr z,LinkError | |
| − | + | in a,[[83Plus:Ports:09|(9)]] | |
| − | + | bit 6,a | |
| − | + | jr nz,LinkError | |
| − | + | and 11h | |
| − | + | jr z,GetByteSE | |
| − | + | in a,(0Ah) | |
| − | + | ret | |
== Credits and Contributions == | == Credits and Contributions == | ||
* '''Michael Vincent:''' Original documentation of the link assist | * '''Michael Vincent:''' Original documentation of the link assist | ||
Revision as of 18:38, 28 March 2005
Contents
Synopsis
Port Number: 0Ah
Function: Link Assist Input Buffer
This port allows you to read the data that has been received by the link assist.
Read Values
- [00h - FFh]: Byte currently in the link assist's buffer.
Write Values
None
Comments
This port only exists on the 83+ SE and the 84+.
Check port 9 before you read this port, to see that there is valid data. Also, do not read this port more than once per data byte received.
Example
GetByteSE: in a,(4) and 8 jr z,LinkError in a,(9) bit 6,a jr nz,LinkError and 11h jr z,GetByteSE in a,(0Ah) ret
Credits and Contributions
- Michael Vincent: Original documentation of the link assist
