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Elite on the BBC Micro

Text: label (6502SP version)

Name: label [View in context] Type: Subroutine Category: Text Summary: Send a two-byte OSWRCH command to the I/O processor
This routine sends a command to the I/O processor, along with the parameter byte from the top of the stack. Arguments: A The command byte to send to the I/O processor Top of stack The parameter to send to the I/O processor
.label JSR OSWRCH \ Send the command byte in A to the I/O processor PLA \ Retrieve the parameter from the stack JMP OSWRCH \ Send the parameter in A to the I/O processor, and \ return from the subroutine using a tail call