Castlevania Genesis notes

$FF9300 | Controller buffer
 > $00      - Port 1 ID
 > $01      - Port 2 ID
 > $0B      - [PORT 1] 6pad flag ($00/$01)
 > $0C,$0D  - [PORT 1] SACBRLDU  Hold,Press
 > $0E,$0F  - [PORT 1] 000000XYZ Hold,Press (MODE is ignored)
 > $23      - [PORT 2] 6pad flag ($00/$01)
 > $24,$25  - [PORT 2] SACBRLDU  Hold,Press
 > $26,$27  - [PORT 2] 000000XYZ Hold,Press (MODE is ignored)
$FF9060 (WORD) - controller inputs SACBRLDU ($hold|press)
$FF9062 (WORD) - controller inputs      XYZ ($hold|press)
$FF9CA0 (WORD) - Player actions (routines at $1099C)
   - $07 move right on ladder
   - $08 move left on ladder
   - $0F turn to left on ladder
   - $10 turn to right on ladder
$FF9F0A - Player data for frames(?)
$FF9CBF (BYTE) - Player is-on-ladder flag
$FF9C82 (WORD) - Player AnimFrame
$FF9C86 (WORD) - Player AnimFrame oldnumber
$FF9CCC (WORD) - Flag JumpOutTheLadder
$FFAC00 - Alternate sprite list for the water
$FFB280 -
$FFB318 - Player Xpos (SCREEN position)
$FFB31C - Player Ypos
$FFB328 - Player animation ID
$FFB32C - Player direction (1 - right, 0 - left)
$FFB32D - Player YFlip
$FFB34E (LONG) - Animation data pointer
 -- $0106C2 standing
 -- $0106CA walking
 -- $0106FE ladder climb up step 1
 -- $010706 ladder climb up step 2
 -- $01070E ladder climb down step 1
 -- $010716 ladder climb down step 2
$FFEEB0 - DMA Sprite list

CODE:
$00E99C - ROUTINE: Make Player sprite from pieces
$0106C2 - ROUTINE: Set player animation
$031F3A - ROUTINE: Build sprites (1)
$0320D4 - ROUTINE: Build sprites (2)

$011002 - Player going up in ladder ($FF9CD4 WORD: index jump)
$0113E2 - Player going down in ladder
$060FD0 - Sprite piece pointer list (very large list)

examples:
$068586 - ladderframe1 start
 + $00  - Xpos
 + $02  - Ypos
 + $04  - ?
 + $06  - ?

Animation data format (2 bytes):
  $(timer),$(frame)
  if $FFFF then loop
  if $0000 then finish

ids for the on-ladder sprite pieces:
$0D,$0E,$09
$0A,$0B,$0C
$13,$14,$0F
$10,$11,$12

off_0_EA7E data format
 dc.w piece_1 (list at: 060FD0, pz_id*2)
 dc.w piece_2
 dc.b ?
 dc.b ?,?,?,?,?
 rept 7
 dc.w ?
 dc.w ?
 dc.w ?
 endr