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⌂ ∞ ▽ Elite on the 6502

Equipment: DrawCobraMkIII

[NES version, Bank 0]

       Name: DrawCobraMkIII                                          [Show more]
       Type: Subroutine
   Category: Equipment
    Summary: Draw the Cobra Mk III on the Equip Ship screen

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * EQSHP calls DrawCobraMkIII




.DrawCobraMkIII

 LDA #20                ; Set XC and YC so the call to DrawImageNames draws the
 STA YC                 ; Cobra Mk III at text column 2 on row 20
 LDA #2
 STA XC

 LDA #26                ; Set K = 26 so the call to DrawImageNames draws 26
 STA K                  ; tiles in each row

 LDA #5                 ; Set K+1 = 5 so the call to DrawImageNames draws 5 rows
 STA K+1                ; of tiles

 LDA #HI(cobraNames)    ; Set V(1 0) = cobraNames, so the call to DrawImageNames
 STA V+1                ; draws the Cobra Mk III
 LDA #LO(cobraNames)
 STA V

 LDA #0                 ; Set K+2 = 0, so the call to DrawImageNames copies the
 STA K+2                ; entries directly from cobraNames to the nametable
                        ; buffer without adding an offset

 JSR DrawImageNames_b4  ; Draw the Cobra Mk III at text column 2 on row 20

 JMP DrawEquipment_b6   ; Draw the currently fitted equipment onto the Cobra Mk
                        ; III image, returning from the subroutine using a tail
                        ; call