This shows you the differences between two versions of the page.
Both sides previous revision Previous revision | |||
mg_notes:apple_iic:accelerator [2017/07/18 13:02] M.G. [MIG RAM Use] |
mg_notes:apple_iic:accelerator [2017/07/25 16:16] (current) M.G. [MIG RAM Use] |
||
---|---|---|---|
Line 15: | Line 15: | ||
* $02,$03 - current accelerator control word. | * $02,$03 - current accelerator control word. | ||
* $04 - keyboard keypress at RESET time, used to detect <key>ESC</key> during reset. | * $04 - keyboard keypress at RESET time, used to detect <key>ESC</key> during reset. | ||
- | * $05-$08 - copies of what should be in Zip Chip $C05c-$c05f registers (respectively). | + | * $05-$08 - copies of what should be in Zip Chip $c05c-$c05f registers (respectively). |
* $10-$17 - used to save zero page locations $00-$07. | * $10-$17 - used to save zero page locations $00-$07. | ||
* Others - apparently unused. | * Others - apparently unused. |