The write_0346 (I/O processor) subroutine - Elite on the BBC Micro and NES

       Name: write_0346                                              [Show more]
       Type: Subroutine
   Category: Tube
    Summary: Implement the write_0346 command (update LASCT)
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * tube_table calls write_0346


 This routine is run when the parasite sends a write_0346 command. It updates
 the I/O processor's value of LASCT to the value sent by the parasite.


.write_0346

 JSR tube_get           \ Get the parameter from the parasite for the command:
                        \
                        \   write_0346(value)
                        \
                        \ and store it as follows:
                        \
                        \   * A = the new value of LASCT

 STA LASCT              \ Update the value in LASCT to the value we just
                        \ received from the parasite

 RTS                    \ Return from the subroutine

[X]

Configuration variable LASCT = &0346

The laser pulse count for the current laser, matching the address in the main game code

[X]

Subroutine tube_get (category: Tube)

As the I/O processor, fetch a byte that's been sent over the Tube from the parasite

Tube: write_0346

[Elite-A, I/O processor]