Difference between revisions of "Ports Template"
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| + | '''Note:''' Do not take the information on this template page as actual documentation! | ||
| + | |||
| + | The Ports are named by their number, in hexadecimal. An example is [[83Plus:Ports:00]]. | ||
| + | |||
| + | You also must put a variation on the following code into your page to have it categorized: | ||
| + | <nowiki>[[Category:83Plus:Ports:By Address|06 - Flash Memory Paging]] | ||
| + | [[Category:83Plus:Ports:By Name|Flash Memory Paging]]</nowiki> | ||
| + | |||
| + | ---- | ||
| + | |||
== Synopsis == | == Synopsis == | ||
'''Port Number:''' 06h | '''Port Number:''' 06h | ||
| + | |||
| + | '''Function:''' Flash Memory Paging | ||
This port controls what page is swapped into the 4000h to 7FFFh range. ('''DO NOT''' take this template page as real documentation on port 6!) | This port controls what page is swapped into the 4000h to 7FFFh range. ('''DO NOT''' take this template page as real documentation on port 6!) | ||
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<nowiki>push af | <nowiki>push af | ||
in a,(6) | in a,(6) | ||
| − | + | push af | |
ld a,1 | ld a,1 | ||
out (6),a | out (6),a | ||
; do stuff that needs page 1 swapped in | ; do stuff that needs page 1 swapped in | ||
| − | + | pop af | |
out (6),a | out (6),a | ||
pop af</nowiki> | pop af</nowiki> | ||
Latest revision as of 09:22, 28 March 2005
Note: Do not take the information on this template page as actual documentation!
The Ports are named by their number, in hexadecimal. An example is 83Plus:Ports:00.
You also must put a variation on the following code into your page to have it categorized:
[[Category:83Plus:Ports:By Address|06 - Flash Memory Paging]] [[Category:83Plus:Ports:By Name|Flash Memory Paging]]
Contents
Synopsis
Port Number: 06h
Function: Flash Memory Paging
This port controls what page is swapped into the 4000h to 7FFFh range. (DO NOT take this template page as real documentation on port 6!)
Read Values
- [00h - FFh]: The current port mapped to the memory range 4000h through 7FFFh.
Write Values
- [00h - FFh]: The new page to swap in to the memory range 4000h through 7FFFh
Note: if you would have bitwise flags for your port, label them "bit X".
Comments
The behavior of this port changes in different memory map modes.
Example
push af in a,(6) push af ld a,1 out (6),a ; do stuff that needs page 1 swapped in pop af out (6),a pop af
Credits and Contributions
- /dev/urandom: Because of your randomness, this project is possible.
