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* Opcode: '''0x2D'''
* Short name: '''BGSCR'''
* Long name: Background Scroll
==== Memory layout ====
{| border="1" cellspacing="1" cellpadding="3" style="border: 1px solid black; border-collapse: collapse;"
! width="40" | 0x2D
! width="50" | ''B1 / B2''
! width="40" | ''L''
! width="80" | ''X''
! width="80" | ''Y''
|}
==== Arguments ====
* '''const Bit[4]''' ''B1'': Bank to retrieve value for ''X'', or zero if ''X'' is specified as a literal.
* '''const Bit[4]''' ''B2'': Bank to retrieve value for ''Y'', or zero if ''Y'' is specified as a literal.
* '''const UByte''' ''L'': ID number of the layer to manipulate.
* '''const Short''' ''X'': Speed of the scroll in the X direction; positive values indicate right-to-left scrolling.
* '''const Short''' ''Y'': Speed of the scroll in the Y direction; positive values indicate bottom-to-top scrolling.
==== Description ====
Scrolls the background layer specified by ''L''. This opcode will only scroll those extra layers above the standard background and foreground layers (0/1, respectively), and so should be an argument of 2 or greater. The ''X'' and ''Y'' speeds are signed; positive values scroll from right-to-left and bottom-to-top, whilst negative values scroll from left-to-right and top-to-bottom.
* Short name: '''BGSCR'''
* Long name: Background Scroll
==== Memory layout ====
{| border="1" cellspacing="1" cellpadding="3" style="border: 1px solid black; border-collapse: collapse;"
! width="40" | 0x2D
! width="50" | ''B1 / B2''
! width="40" | ''L''
! width="80" | ''X''
! width="80" | ''Y''
|}
==== Arguments ====
* '''const Bit[4]''' ''B1'': Bank to retrieve value for ''X'', or zero if ''X'' is specified as a literal.
* '''const Bit[4]''' ''B2'': Bank to retrieve value for ''Y'', or zero if ''Y'' is specified as a literal.
* '''const UByte''' ''L'': ID number of the layer to manipulate.
* '''const Short''' ''X'': Speed of the scroll in the X direction; positive values indicate right-to-left scrolling.
* '''const Short''' ''Y'': Speed of the scroll in the Y direction; positive values indicate bottom-to-top scrolling.
==== Description ====
Scrolls the background layer specified by ''L''. This opcode will only scroll those extra layers above the standard background and foreground layers (0/1, respectively), and so should be an argument of 2 or greater. The ''X'' and ''Y'' speeds are signed; positive values scroll from right-to-left and bottom-to-top, whilst negative values scroll from left-to-right and top-to-bottom.
