Loader: LoadGMAFile

       Name: LoadGMAFile                                             [Show more]
       Type: Subroutine
   Category: Loader
    Summary: Load a specific GMA file
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * Elite GMA loader (Part 2 of 4) calls LoadGMAFile
             * Elite GMA loader (Part 3 of 4) calls LoadGMAFile
             * Elite GMA loader (Part 4 of 4) calls LoadGMAFile


 Arguments:

   A                    The number of the GMA file to load

                          * For the GMA85 NTSC variant: as an ASCII character

                          * For the GMA86 PAL variant: as an integer


.LoadGMAFile

 JSR SetUpGMAFile       ; Configure the filename parameters to load the GMA file
                        ; whose number is in A

 LDA #1                 ; Call the Kernal's SETLFS function to set the file
 LDX #8                 ; parameters as follows:
 LDY #1                 ;
 JSR KERNALSETLFS       ;   * A = logical number 1
                        ;
                        ;   * X = device number 8 (disk)
                        ;
                        ;   * Y = secondary address 1

 LDA #0                 ; Call the Kernal's LOAD function to load the GMA file
 JSR KERNALLOAD         ; as follows:
                        ;
                        ;   * A = 0 to initiate a load operation
                        ;
                        ; So this loads the specified GMA file from disk

 RTS                    ; Return from the subroutine