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57 lines
836 B
PHP
57 lines
836 B
PHP
; NES I/O locations and masks
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.ifndef BUILD_NSF
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; PPU
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PPUCTRL = $2000
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PPUMASK = $2001
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PPUSTATUS = $2002
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SPRADDR = $2003
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SPRDATA = $2004
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PPUSCROLL = $2005
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PPUADDR = $2006
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PPUDATA = $2007
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SPRDMA = $4014
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PPUCTRL_NMI = $80
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PPUMASK_BG0 = $0A
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PPUCTRL_8X8 = $00
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PPUCTRL_8X16 = $20
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PPUMASK_SPR = $14
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PPUMASK_BG0CLIP = $08
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.endif
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; APU
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SNDCHN = $4015
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JOY1 = $4016
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JOY2 = $4017
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SNDMODE = $4017
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SNDMODE_NOIRQ = $40
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.ifndef REGION_FREE
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.ifndef PAL_ONLY
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.ifndef NTSC_ONLY
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NTSC_ONLY = 1
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.endif
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.endif
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.else
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.ifdef NTSC_ONLY
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.error "NTSC_ONLY and REGION_FREE defined"
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.endif
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.ifdef PAL_ONLY
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.error "PAL_ONLY and REGION_FREE defined"
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.endif
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.endif
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.ifdef NTSC_ONLY
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CLOCK_RATE = 1789773
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PPU_FRAMELEN = 29781
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.endif
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.ifdef PAL_ONLY
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CLOCK_RATE = 1662607
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PPU_FRAMELEN = 33248
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.endif
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