Routines
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90E4: Game Selection Menu
Used by the routine at Select_Game_Options.
Prints the five lines of the game selection menu, the copyright message and the title.
The attributes of the lines are read through DE from GameSelection_Attributes, while the y positions and the strings are read through HL' and DE'.
Game Selection Menu
game-menu
Set up the pointers and the counter of the five lines.
GameMenu 90E4 LD DE,$9119 Point at the attributes of the lines (GameSelection_Attributes).
90E7 EXX Switch to the shadow registers.
90E8 LD HL,$911F HL'=GameSelection_Position (the y positions of the lines).
90EB LD DE,$9125 DE'=GameSelection_Text (the first string).
90EE LD B,$05 B'=05 (the number of lines).
GameMenu_Loop 90F0 EXX Switch to the main registers.
Print each of the lines.
90F1 LD A,(DE) Fetch the attribute of the line.
90F2 LD ($8EE8),A Store it in the print attribute (Current_MenuAttribute).
90F5 INC DE Move on to the next attribute.
90F6 EXX Switch to the shadow registers.
90F7 PUSH BC Stash the counter on the stack.
90F8 LD A,(HL) Fetch the y position of the line.
90F9 INC HL Move on to the next y position.
90FA PUSH HL Stash the pointer to the y positions on the stack.
90FB LD H,A Use it as the y position of the line.
90FC LD L,$58 L'=58 (the x position of the lines).
90FE CALL MenuWriteText Print the string.
9101 EXX Switch to the shadow registers.
9102 POP HL Restore the pointer to the y positions.
9103 POP BC Restore the counter.
9104 INC DE Move on to the next string.
9105 DJNZ GameMenu_Loop Repeat for each of the lines.
Print the copyright message and the title.
9107 LD HL,$B800 Set the x position to 00 and the y position to B8 (B800).
910A LD DE,$9174 Point at the copyright message (Message_Copyright).
910D CALL PrintStringColour Print the copyright message.
9110 LD HL,$0010 Set the x position to 10 and the y position to 00 (10).
9113 LD DE,$9195 Point at the title (GameSelection_Title).
9116 JP PrintStringColour Jump to PrintStringColour.
View the equivalent code in;
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