Routines
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51287: Move Rows Down
Used by the routine at ScrollViewDown.
Copies 120 rows of the screen buffer downwards, by jumping into the code at ShiftViewRightByte.
Input
HL The address of the end of the rows to copy
B The number of rows
MoveRowsDown 51287 LD (23770),SP Write SP at SavedStackPointer.
51291 LD SP,61883 SP is 61883.
51294 JP ShiftViewRightByte_Copy Jump to ShiftViewRightByte_Copy.
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