.DELAY JSR WSCAN \ Call WSCAN to wait for the vertical sync, so the whole \ screen gets drawn DEY \ Decrement the counter in Y BNE DELAY \ If Y isn't yet at zero, jump back to DELAY to wait \ for another vertical sync RTS \ Return from the subroutineName: DELAY [Show more] Type: Subroutine Category: Utility routines Summary: Wait for a specified time, in 1/50s of a secondContext: See this subroutine in context in the source code Variations: See code variations for this subroutine in the different versions References: This subroutine is called as follows: * BRIS calls DELAY * DK4 calls DELAY * DKS3 calls DELAY * dn2 calls DELAY * DOENTRY calls DELAY * Main game loop (Part 5 of 6) calls DELAY * MT26 calls DELAY * TT217 calls DELAY
Wait for the number of vertical syncs given in Y, so this effectively waits for Y/50 of a second (as the vertical sync occurs 50 times a second).
Arguments: Y The number of vertical sync events to wait for
[X]
Subroutine DELAY (category: Utility routines)
Wait for a specified time, in 1/50s of a second
[X]
Subroutine WSCAN (category: Drawing the screen)
Implement the #wscn command (wait for the vertical sync)