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Universe: TT81

[NES version, Bank 0]

Name: TT81 [Show more] Type: Subroutine Category: Universe Summary: Set the selected system's seeds to those of system 0
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * HME2 calls TT81 * TT111 calls TT81 * TT22 calls TT81 * TT23 calls TT81

Copy the three 16-bit seeds for the current galaxy's system 0 (QQ21) into the seeds for the selected system (QQ15) - in other words, set the selected system's seeds to those of system 0.
.TT81 LDX #5 ; Set up a counter in X to copy six bytes (for three ; 16-bit numbers) LDA QQ21,X ; Copy the X-th byte in QQ21 to the X-th byte in QQ15 STA QQ15,X DEX ; Decrement the counter BPL TT81+2 ; Loop back up to the LDA instruction if we still have ; more bytes to copy RTS ; Return from the subroutine