Atic Atac: Routine at 7D8A

7D8A: Write Menu Line

Used by the routine at GameMenu.

Prints one line of text for the game selection menu. The screen address of the line is worked out in one register set and the attribute address in the other, using the attribute held in Current_MenuAttribute, and then the text is printed by PrintString_Loop.

Before	After

Input
HL	The Y position (in H) and X position (in L)
DE	The address of the text

MenuWriteText

7D8A

PUSH HL

Stash the co-ordinates of the line on the stack.

7D8B

CALL ScreenAddress

Call ScreenAddress to convert the co-ordinates to a screen address.

7D8E

LD A,($5E22)

Fetch the attribute of the line and keep it in AF'.

7D91

EX AF,AF'

7D92

EXX

Switch to the shadow registers.

7D93

POP HL

Restore the co-ordinates of the line from the stack.

7D94

CALL AttributeAddress

Call AttributeAddress to convert the co-ordinates to an attribute address.

7D97

JP PrintString_Loop

Jump to PrintString_Loop to print the menu line.

View the equivalent code in;