Low hub layout... $0000-$000F

I know the layout except for one byte. Is the byte at $0005 a checksum byte or is it for something else?
Here is the rest of the layout for anyone that does not know...
The Stackmarker of $FF FF F9 FF is repeated at Dbase - 4 and Dbase - 8.
The code is zero filled from Vbase to Dbase - 8.
Here is the rest of the layout for anyone that does not know...
$0000 long 00 EA 32 06 ' clock frequency (104MHz shown for 6.5MHz xtal) $0004 byte 6F ' clock mode xtal1 + PLL16 $0005 byte CE ' is this a checksum??? $0006 word 10 00 ' Pbase = $0010 (always $0010) $0008 word 88 29 ' Vbase = $2988 $000A word B4 30 ' Dbase = $30B4 $000C word 58 00 ' Pcurr = $0058 $000E word E0 30 ' Dcurr = $30E0
The Stackmarker of $FF FF F9 FF is repeated at Dbase - 4 and Dbase - 8.
The code is zero filled from Vbase to Dbase - 8.
Comments