BIOSF UPLOAD

BIOSF_UPLOAD ($C00546): Upload data to DRAM

BIOS_UPSRC ($10FEF8 ) (32bit): Source (Long)

BIOS_UPDEST ($10FEF4 ) (32bit): Destination (Long)

BIOS_UPSIZE ($10FEFC ) (32bit): Size (Long)

BIOS_UPZONE ($10FEDA ) (8bit): Zone (Byte, 0=PRG, 1=FIX, 2=SPR, 3=Z80, 4=PCM, 5=PAT)

BIOS_UPBANK ($10FEDB ) (8bit): Bank (Byte)

For FIX, Z80 (, PAT ?) and PCM upload, the destination has to be multiplied by 2 (8bit busses). The SPR bank size is 1MiB (4 banks), PCM bank size is 512KiB (4 banks). The other zones aren't banked.

BIOS_UPDEST (and BIOS_UPSRC ?) is incremented by the size upon completion, which allows to do multiple consecutive uploads.

Steps

• $FF0004.w and $10FD80 are pushed
• $FF0004.w = 1
• $10FD80=0, system mode
• Mapping
• $FF016F.b=1 disable interrupts ?
• Copy
• Watchdog kicked
• $FF016F.b=0 enable interrupts ?
• Unmapping
• Restore $10FD80.w and $FF0004.w

Modes

• BIOS_UPZONE=0: Upload PRG DMA words
  • Load word copy microcode
  • Dest=size+dest
  • LoadMicrocodeA0
  • DoDMAWordCopyBypass

• BIOS_UPZONE=1: Upload Fix DMA bytes
  • $FF0129.b=0, $FF0105.b=5 (FIX set, upload type)
  • Load byte copy microcode
  • DoDMAWordCopy
  • Dest=Dest+(size*2)
  • $FF0149.b=0 FIX unset

• BIOS_UPZONE=2: Upload Srites DMA words
  • $FF0121.b=0, $FF0105.b=0, $FF01A1.b=UploadBank (SPR set, upload type)
  • Load word copy microcode
  • Upload (>1MiB possible, bank is autoincremented)
  • DoDMAWordCopy
  • $FF0141.b=0 SPR unset

• BIOS_UPZONE=3: Upload Z80 DMA bytes
  • $FF0127.b=0, $FF0105.b=4 (Z80 set, upload type)
  • Load byte copy microcode
  • DoByteCopy
  • Dest=Dest+(size*2)
  • $FF0147.b=0 Z80 unset

• BIOS_UPZONE=4: Upload PCM DMA bytes
  • $FF0123.b=0, $FF0105.b=1, $FF01A3.b=UploadBank (PCM set, upload type)
  • Load byte copy microcode
  • Upload (>1MiB possible, bank is autoincremented)
  • DoByteCopy
  • $FF0143.b=0 PCM unset

• BIOS_UPZONE=5: Install PAT
  • $FF0127.b=0, Z80 set
  • $FF0105.b=4, upload type
  • 10F736.l=((Bank*$10000)+Dest)/256
  • 10F736+Address/2
  • See PAT file for data format

• BIOS_UPZONE=6: Upload palette words
  • Load word copy microcode
  • move.l #$00400000,d0 ;0BEC6: 203C00400000
  • bsr DoDMAWordCopyBypass ;0BECC: 61000018
  • Dest=size+dest

• BIOS_UPZONE=7: Upload sprites loop longwords (?)
  • $FF0121.b=0, $FF0105.b=0, $FF01A1.b=UploadBank (SPR set, upload type)
  • A1=Dest+$E00000
  • Size.l=(Src.l)
  • Size=0 ? Yes: Dest=A1-$E00000
  • Copy src to dest
  • ...weird longword copy in a loop to upload zone
  • $FF0141.b=0 SPR unset

• BIOS_UPZONE=8: Upload PRG DMA
  • Same as 0

• BIOS_UPZONE=10: Upload PRG loop longwords
  • Load word copy microcode
  • $FF0004.w=$31
  • DoLongwordCopyBypass
  • $FF0004.w=$0331
  • Dest=Dest+Size

• BIOS_UPZONE=11: Upload FIX loop words
  • $FF0129.b=0, $FF0105.b=5 (FIX set, upload type)
  • DoWordToByteCopy
  • Dest=Dest+(size*2)
  • $FF0149.b=0 FIX unset

• BIOS_UPZONE=12: Upload Sprites loop longwords
  • $FF0121.b=0, $FF0105.b=0, $FF01A1.b=UploadBank (SPR set, upload type)
  • bsr DoLongwordCopy ;0BC48: 610002BC
  • Dest=Dest+Size
  • $FF0141.b=0 SPR unset

• BIOS_UPZONE=13: Upload Z80 loop bytes
  • $FF0127.b=0, $FF0105.b=4 (Z80 set, upload type)
  • bsr DoByteCopy ;0BCF8: 61000250
  • Dest=Dest+(size*2)
  • $FF0147.b=0 Z80 unset

• BIOS_UPZONE=14: Upload PCM loop bytes
  • $FF0123.b=0, $FF0105.b=1, $FF01A3.b=UploadBank (PCM set, upload type)
  • DoByteCopy ;0BCCC: 6100027C
  • Dest=Dest+(size*2)
  • Auto bank++
  • $FF0143.b=0 PCM unset

• BIOS_UPZONE=15: Install PAT
  • Same as 5

• BIOS_UPZONE=16: Upload palette longwords
  • Load word copy microcode
  • move.l #$00400000,d0 ;0BD42: 203C00400000
  • bsr DoLongwordCopyBypass ;0BD48: 610001C2
  • Dest=Dest+Size

• BIOS_UPZONE=17: Upload sprites loop longwords (?)
  • $FF0121.b=0, $FF0105.b=0, $FF01A1.b=UploadBank (SPR set, upload type)
  • Similar to 7, longword copy in a loop to upload zone
  • $FF0141.b=0 SPR unset

• BIOS_UPZONE=18
  • Same as 10