13 lines
498 B
PHP
13 lines
498 B
PHP
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.macro PPU_SETADDR addr
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bit PPU_STATUS ; Read from PPU_STATUS to reset my address latch
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lda #>addr ; Fetch the hi-byte from 16-bit address
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sta PPU_ADDR ; Store the hi-byte into PPU_ADDR $2006
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lda #<addr ; Fetch the lo-byte from 16-bit address
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sta PPU_ADDR ; Store the lo-byte into PPU_ADDR $2006
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.endmacro
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.macro PPU_SETDATA val
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lda val
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sta PPU_DATA ; Send value to PPU register $2007
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.endmacro
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