CogDataArea

(figure is decimal)
$H_cogdata = 840         pointer to the main cogdata area
$S_cdsz = 224            The size of the cog's data area


cogdata              HUB address
     ----------------
cog0 |               | 840 =  840 + ($S_cdsz*0)
     |               |        [ 0 cogio . ]
     |               |
     |---------------|
cog1 |               | 1064 =  840 + ($S_cdsz*1)
     |               |         [ 1 cogio . ]
     |               |
     |---------------|
cog2 |               | 1288 =  840 + ($S_cdsz*2)
     |               |         [ 2 cogio . ]
     |               |
     |---------------|
cog3 |               | 1512 =  840 + ($S_cdsz*3)
     |               |         [ 3 cogio . ]
     |               |
     |---------------|
cog4 |               | 1736 =  840 + ($S_cdsz*4)
     |               |         [ 4 cogio . ]
     |               |
     |---------------|
cog5 |               | 1960 =  840 + ($S_cdsz*5)
     |               |         [ 5 cogio . ]
     |               |
     |---------------|
cog6 |               | 2184 =  840 + ($S_cdsz*6)
     |               |         [ 6 cogio . ]
     |               |
     |---------------|
cog7 |               | 2408 =  840 + ($S_cdsz*7)
     |               |         [ 7 cogio . ]
     |               |
     ----------------

'io' print out CogDataAerea of current-cog.(this address is also io-channel)
Prop0 Cog6 ok
io . 
2184 Prop0 Cog6 ok


Detail inside CogDataArea is next tip.