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;****************************************************************************
; Player variables
;****************************************************************************
ds $100-($&$FF), $FF
RAM_PSGData: ds 4*16 ; PSG envelope data
; ds 1 ... Channel volume
; ds 1 ... Global volume
; ds 3 ... Current address
; ds 3 ... Looping address
; ds 3 ... Start address
; ds 1 ... Semitone ($FF if void)
; ds 3 ... BGM instrument address
; ds 1 ... BGM channel volume
RAM_BGMFMInstr: ds 8 ; FM instruments used by BGM
RAM_BGMFMVol: ds 8 ; FM volumes used by BGM
RAM_BGMFMPan: ds 8, $C0 ; FM panning used by BGM
RAM_FMVol: ds 8 ; FM volume of each channel
RAM_FMData: ds 8*5 ; FM info (for volume handling)
; ds 8*1 ... Register $B0
; ds 8*1 ... Register $40
; ds 8*1 ... Register $44
; ds 8*1 ... Register $48
; ds 8*1 ... Register $4C
RAM_Locked: ds 12 ; Locked channels
RAM_PSGNote: ds 4 ; Current PSG notes
RAM_LastBank: ds 1 ; Last accessed bank
RAM_BGMData: ; Where BGM data starts
RAM_BGMPlaying: ds 1 ; Set if a BGM is playing
RAM_BGMDelay: ds 1 ; How many ticks to wait
RAM_BGMBank: ds 1 ; Current BGM bank
RAM_BGMAddress: ds 2 ; Current BGM address
RAM_BGMLoopPoint: ds 3 ; BGM loop point
RAM_SFXData: ; Where SFX data starts
RAM_SFXPlaying: ds 1 ; Set if a SFX is playing
RAM_SFXDelay: ds 1 ; How many ticks to wait
RAM_SFXBank: ds 1 ; Current SFX bank
RAM_SFXAddress: ds 2 ; Current SFX address
RAM_SFXLoopPoint: ds 3 ; SFX loop point
RAM_Paused: ds 1 ; Set if BGM stream is paused
RAM_Mono: ds 1 ; Set if panning is disabled
RAM_PCMBank1: db 1 ; (not implemented yet)
RAM_PCMAddr1: dw 1 ; (not implemented yet)
RAM_PCMBank2: db 1 ; (not implemented yet)
RAM_PCMAddr2: dw 1 ; (not implemented yet)
RAM_Scratch: ds 32 ; Scratch bytes, may be useful when
; buffering to speed up to avoid bank
; switching conflicts
ds $F0-($&$FF), $FF
RAM_PCMBuffer: ds 0 ; PCM buffer
RAM_PCMBuffer1: ds 8 ; (not implemented yet)
RAM_PCMBuffer2: ds 8 ; (not implemented yet)
;****************************************************************************
; Pointer list starts being stored from here
; $300 (768) bytes are needed to store the pointer list
;
; Format for a pointer list entry is as follows:
; RAM_PointerList[$000+n] = address high
; RAM_PointerList[$100+n] = address low
; RAM_PointerList[$200+n] = bank
;****************************************************************************
RAM_PointerList: equ $1C00
;****************************************************************************
; 68000 communication variables
;****************************************************************************
RAM_Stack: equ $1FE0 ; Where stack starts
RAM_GlobalVol: equ $1FE0 ; Global volume for all channels
RAM_Status: equ $1FF0 ; Current playback status
RAM_RefreshVol: equ $1FF1 ; Set to refresh all volumes
RAM_Flags: equ $1FF2 ; Track flags
RAM_Command: equ $1FFF ; Command type
RAM_ComAddr: equ $1FFD ; Command address parameter
RAM_ComBank: equ $1FFC ; Command bank parameter
RAM_Command2: equ $1FFB ; (second slot for all the above)
RAM_ComAddr2: equ $1FF9
RAM_ComBank2: equ $1FF8
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