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⌂ ∞ Elite on the BBC Micro and NES

PPU: WaitForIconBarPPU

[NES version, Bank 7]

       Name: WaitForIconBarPPU                                       [Show more]
       Type: Subroutine
   Category: PPU
    Summary: Wait until the PPU starts drawing the icon bar

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




.WaitForIconBarPPU

 LDA setupPPUForIconBar ; Loop back to the start until setupPPUForIconBar is
 BEQ WaitForIconBarPPU  ; non-zero, at which point the SETUP_PPU_FOR_ICON_BAR
                        ; macro and SetupPPUForIconBar routine are checking to
                        ; see whether the icon bar is being drawn by the PPU

.wbar1

 SETUP_PPU_FOR_ICON_BAR ; If the PPU has started drawing the icon bar, configure
                        ; the PPU to use nametable 0 and pattern table 0

 LDA setupPPUForIconBar ; Loop back until setupPPUForIconBar is zero, at which
 BNE wbar1              ; point the icon bar is being drawn by the PPU

 RTS                    ; Return from the subroutine