Routines
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64230: Wait for interrupt then display "PRESS FIRE TO CONTINUE" window and wait for fire to be pressed
Used by the routines at 37764, 37880, 37951, 40258, 41578, 44253, 45641, 45685, 45723, 45963, 63740, 64317 and 64582.
64230 HALT Wait for interrupt
64231 CALL 47946 Play hiss-type sound
64234 LD A,14 Draw window 14 ("PRESS FIRE TO CONTINUE")...
64236 CALL 47193 ...
64239 LD HL,50714 Point HL at "PRESS FIRE TO CONTINUE" text string...
64242 CALL 46902 ...and print to screen
64245 CALL 64034 Capture keyboard or joystick input loading result into A
64248 BIT 4,A If fire-pressed flag is reset...
64250 JR Z,64245 ...then loop back to 64245
64252 CALL 47592 Wait for fire button / key to be released
64255 JP 47897 Play upward scale sound and return
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