Pentagram: Routine at BB64

BB64: Flash one of B attributes, and steady the rest

Used by the routine at FLASH_MENU.

Sets bit 7, FLASH, on the A'th of B attribute bytes from HL, counting from 0, and clears it on the others. FLASH_MENU marks the chosen control method on the menu with it. This entry deals with the first byte; the loop is FLASH_NEXT_ONE. HL comes back just past the last byte.

Input
HL	the first attribute
B	how many
A	which one flashes

TOGGLE_SELECTED

BB64

AND A

not the first

BB65

JR NZ,FLASH_NEXT_ONE_0

This entry point is used by the routine at FLASH_NEXT_ONE.

TOGGLE_SELECTED_0

BB67

SET 7,(HL)

flash this one

BB69

JR FLASH_NEXT_ONE_1