Routines
Prev: 802C Up: Map Next: 80FD
80D1: Game Selection Menu
Draws the seven menu lines and the copyright message.
main-menu
GameMenu 80D1 LD DE,$810E Set the attribute table pointer to GameSelection_Attributes.
80D4 EXX Switch to the shadow registers.
80D5 LD HL,$8115 Set the Y position table pointer to GameSelection_Position.
80D8 LD DE,$811C Set the message pointer to String_GameSelection.
There are seven lines of text.
80DB LD B,$07 Set a line counter in B' for 07 loops.
GameMenu_Loop 80DD EXX Switch back to the normal registers.
80DE LD A,(DE) Copy the line attribute to Current_MenuAttribute.
80DF LD ($5E66),A
80E2 INC DE Move the attribute table pointer on by one.
Fetch the line Y position and print the line.
80E3 EXX Switch to the shadow registers.
80E4 PUSH BC Stash the line counter on the stack.
80E5 LD A,(HL) Fetch the line Y position.
80E6 INC HL Move the Y position table pointer on by one.
80E7 PUSH HL Stash the Y position table pointer on the stack.
80E8 LD H,A Set the print co-ordinate from the Y position and X position 38.
80E9 LD L,$38
80EB CALL MenuWriteText Call MenuWriteText.
Move on to the next line of text until all seven are printed.
80EE EXX Switch to the shadow registers.
80EF POP HL Restore the Y position table pointer and line counter from the stack.
80F0 POP BC
80F1 INC DE Move the message pointer on to the next string.
80F2 DJNZ GameMenu_Loop Decrease the line counter by one and loop back to GameMenu_Loop until every line is printed.
Print the copyright line.
80F4 LD HL,$B800 Set the screen position to B800.
80F7 LD DE,$818A Set the message pointer to String_Copyright.
80FA JP PrintStringColour Jump to PrintStringColour.
View the equivalent code in;
Prev: 802C Up: Map Next: 80FD