Screen buffer: ShowIconBuffer

       Name: ShowIconBuffer                                          [Show more]
       Type: Subroutine
   Category: Screen buffer
    Summary: Display the redrawn icon and scanner row by copying the contents
             of the icon screen buffer into screen memory
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * ClearIconsScanner calls ShowIconBuffer
             * IRQHandler calls ShowIconBuffer
             * UpdateIconsScanner calls ShowIconBuffer


.ShowIconBuffer

 LDA #HI(iconBuffer)    \ Set fromAddr(1 0) = iconBuffer(1 0)
 STA fromAddr+1         \
 LDA #LO(iconBuffer)    \ So the call to ShowBufferRow copies from the icon
 STA fromAddr           \ screen buffer, which contains the redrawn icon and
                        \ scanner row

 LDA iconRowAddr+1      \ Set toAddr(1 0) = iconRowAddr(1 0)
 STA toAddr+1           \
 LDA iconRowAddr        \ So the call to ShowBufferRow copies from the icon
 STA toAddr             \ screen buffer into the screen memory for the icon and
                        \ scanner row at the top of the screen

 JMP ShowBufferRow      \ Jump to ShowBufferRow to copy the contents of the
                        \ icon screen buffer into screen memory