SD testing v105
Parameters used...
;
4404: nCS=1    ;
4408: 00000040 00000000 00000095 00000000 ;
441C: 00000048 000001AA 00000087 00000000 00000000 ;
4434: 33330001 <eof>

MBR sector 0...
01C0: 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99  ................
01D0: 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99  ................
01E0: 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99  ................
01F0: 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99  ................
Not MBR

SD card: Unknown ???