Routines
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24342: Character Row Address
Used by the routines at HomeRow, ScrollWindow and ClearLowerRows.
Turns a character row in A into the display address of that row.
Output
DE Display address of character row A
RowAddress 24342 LD L,A Double the row number.
24343 LD H,0
24345 ADD HL,HL
24346 LD DE,23504 Add the screen-row table at ScreenRows.
24349 ADD HL,DE
24350 JP 10992 Enter DE_DE_1 at 10992 to load the row address into DE.
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