Pentagram: Routine at BBD8

Used by the routine at MENU.

Sets the FLASH bit on the colour of the line for the method in bits 1-2 of CONTROL and clears it on the other three (TOGGLE_SELECTED), then clears it on the next colour and sets it again if bit 3 of CONTROL is set. That next colour is the "0 START GAME" line's: Knight Lore's menu (flash_menu) has a line for directional control there, which bit 3 selects, and Pentagram kept the code but not the line. No menu choice sets bit 3, so the start line never flashes from here.

The colours are the first bytes of MENU_COLOURS; the title's, the first, is left alone. MENU calls this once before its loop and again after every pass, and the flash reaches the screen when DISPLAY_MENU rewrites the attributes.

Used by the routine at MENU. Sets the FLASH bit on the colour of the line for the method in bits 1-2 of CONTROL and clears it on the other three (TOGGLE_SELECTED), then clears it on the next colour and sets it again if bit 3 of CONTROL is set. That next colour is the "0 START GAME" line's: Knight Lore's menu (flash_menu) has a line for directional control there, which bit 3 selects, and Pentagram kept the code but not the line. No menu choice sets bit 3, so the start line never flashes from here. The colours are the first bytes of MENU_COLOURS; the title's, the first, is left alone. MENU calls this once before its loop and again after every pass, and the flash reaches the screen when DISPLAY_MENU rewrites the attributes.
FLASH_MENU	BBD8	LD HL,$BBF2	the colour of the "1 KEYBOARD" line, the second in MENU_COLOURS
	BBDB	LD A,(CONTROL)	flash the Ath of the four method lines, A the method from bits 1-2 of CONTROL
	BBDE	RRCA
	BBDF	AND $03
	BBE1	LD B,$04
	BBE3	CALL TOGGLE_SELECTED
	BBE6	RES 7,(HL)	HL is now on the start line's colour: no flash...
	BBE8	LD A,(CONTROL)	...unless bit 3 of CONTROL (directional control) is set; this never ran in the build's sessions
	BBEB	AND $08
	BBED	RET Z
	BBEE	SET 7,(HL)
	BBF0	RET