2015-03-12 18:46:59 +00:00
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; Let's start a little library for naming parts of memory in the NES
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;
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; Including this file will not emit any instructions or data into your binary
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; It only defines symbols in the symbol table to name memory addresses
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;
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; Author: Saf Allen 2015
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2015-03-14 12:01:27 +00:00
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; I picked up some extra register names for mappers etc here:
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; http://wiki.nesdev.com/w/index.php/Registers
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2015-03-12 18:46:59 +00:00
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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.org $0000
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.scope nes
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.scope ppu
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.org $2000
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2015-03-14 12:01:27 +00:00
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.space control1 1 ; $2000
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.space control2 1 ; $2001
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.space status 1 ; $2002
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2015-03-15 10:47:48 +00:00
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.org $2005
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.space scroll 1 ; $2005
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2015-03-14 12:01:27 +00:00
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.
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2015-03-15 10:47:48 +00:00
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.org $2003
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2015-03-14 12:01:27 +00:00
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.scope sprite
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.space address 1 ; $2003
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.space io 1 ; $2004
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2015-03-12 18:46:59 +00:00
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.org $4014
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2015-03-14 12:01:27 +00:00
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.space dma 1 ; $4014
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.
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2015-03-15 10:47:48 +00:00
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.org $2006
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2015-03-14 12:01:27 +00:00
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.scope vram
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2015-03-15 10:47:48 +00:00
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.space address 1 ; $2006
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2015-03-14 12:01:27 +00:00
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.space io 1 ; $2007
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2015-03-12 18:46:59 +00:00
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.
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2015-03-14 12:01:27 +00:00
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; Now let's do the APU registers
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2015-03-12 18:46:59 +00:00
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.org $4000
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.scope apu
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2015-03-14 12:01:27 +00:00
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.scope pulse1
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.space control 1 ; $4000
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.space ramp_control 1 ; $4001
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.space ft 1 ; $4002
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.space ct 1 ; $4003
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2015-03-12 18:46:59 +00:00
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.
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2015-03-14 12:01:27 +00:00
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.scope pulse2
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.space control 1 ; $4004
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.space ramp_control 1 ; $4005
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.space ft 1 ; $4006
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.space ct 1 ; $4007
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2015-03-12 18:46:59 +00:00
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.
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2015-03-14 12:01:27 +00:00
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.scope triangle
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.space control1 1 ; $4008
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.space control2 1 ; $4009
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.space freq1 1 ; $400A
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.space freq2 1 ; $400B
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2015-03-12 18:46:59 +00:00
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.
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2015-03-14 12:01:27 +00:00
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.scope noise
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.space control1 1 ; $400C
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.space control2 1 ; $400D
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.space freq1 1 ; $400E
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.space freq2 1 ; $400F
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2015-03-12 18:46:59 +00:00
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.
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2015-03-14 12:01:27 +00:00
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.scope dmc
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.space control 1 ; $4010
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.space da 1 ; $4011
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.space address 1 ; $4012
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.space dl 1 ; $4013
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2015-03-12 18:46:59 +00:00
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.
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.org $4015
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2015-03-14 12:01:27 +00:00
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.space channel_enable 1 ; $4015
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2015-03-12 18:46:59 +00:00
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.
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.org $4016
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2015-03-14 12:01:27 +00:00
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.space controller1 1 ; $4016
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.space controller2 1 ; $4017
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.scope mapper
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.org $8000
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.space unrom 1
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.org $8000
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.space cnrom 1
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.org $8000
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.space mmc1_control 1
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.org $A000
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.space mmc1_vrom_low 1
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.org $C000
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.space mmc1_vrom_high 1
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.org $E000
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.space mmc1_prog 1
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.org $8000
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.space mmc3_command 1
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.space mmc3_page 1
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.org $A000
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.space mmc3_mirror 1
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.space mmc3_sram 1
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.org $C000
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.space mmc3_clock 1
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.space mmc3_latch 1
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.org $E000
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.space mmc3_clock_off 1
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.space mmc3_clock_on 1
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.
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2015-03-12 18:46:59 +00:00
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.
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2015-03-14 12:01:27 +00:00
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; Let's put PC back somewhere sane
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.org $0000
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