Routines
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49850: Process Screen Character
Used by the routine at CheckTVFlagAndProcess.
On a new line, resets the parser row. Any other character is printed.
Input
A Character code
ProcessScreenCharacter 49850 PUSH HL Read the storage decorative line screen position.
49851 PUSH BC
49852 PUSH AF
49853 LD HL,(49656)
49856 LD A,(49658) Read the decorative line into C.
49859 LD C,A
49860 POP AF Restore the character from the stack.
49861 PUSH AF Keep a copy of the character on the stack.
49862 CP 13 Jump ahead to ProcessScreenCharacter_ScreenWidthCount if this character is not a new line (13).
49864 JR NZ,ProcessScreenCharacter_ScreenWidthCount
ProcessScreenCharacter_Loop 49866 LD A,(40985) Jump to ProcessScreenCharacter_Next if the parser is not 15.
49869 CP 15
49871 JR NZ,ProcessScreenCharacter_Next
Scroll screen and reset display.
49873 CALL ScrollScreenAndResetDisplay Call ScrollScreenAndResetDisplay to scroll the screen and reset the display.
49876 LD A,255 Start the count at 255 so the next step makes it zero.
ProcessScreenCharacter_Next 49878 INC A Add one to the count at 40985 and point HL at 20512.
49879 LD (40985),A
49882 LD HL,20512
49885 LD C,2 Use a length of 2.
Update screen display.
49887 CALL UpdateScreenDisplay Call UpdateScreenDisplay to update the screen.
Screen flag selects the width.
49890 LD A,(49448) Take 36 and go to ProcessScreenCharacter_RecordScreenWidth if the byte at 49448 is zero.
49893 AND A
49894 LD A,36
49896 JR Z,ProcessScreenCharacter_RecordScreenWidth
49898 LD A,18 Take a width of 18 and store it from ProcessScreenCharacter_RecordScreenWidth.
49900 JR ProcessScreenCharacter_RecordScreenWidth
Print this character and leave the row once the width runs out.
Print character.
ProcessScreenCharacter_ScreenWidthCount 49902 CALL PrintCharacter Call PrintCharacter to print this character.
49905 LD A,(49653) Jump back to ProcessScreenCharacter_Loop if the count is finished.
49908 DEC A
49909 JP Z,ProcessScreenCharacter_Loop
ProcessScreenCharacter_RecordScreenWidth 49912 LD (49653),A Record the screen width and record the storage decorative line screen position.
49915 LD (49656),HL
49918 LD A,C
49919 LD (49658),A Record the decorative line.
49922 POP AF Restore the saved result, the saved count and the saved pointer from the stack.
49923 POP BC
49924 POP HL
49925 RET Return.
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