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diff --git a/board/dbau1x00/README b/board/dbau1x00/README new file mode 100644 index 0000000..024fbbe --- /dev/null +++ b/board/dbau1x00/README @@ -0,0 +1,53 @@ +By Thomas.Lange@corelatus.se 2003-10-06 +---------------------------------------- +DbAu1000 is a development board from AMD containing +an Alchemy AU1000 with mips32 core. + +Limitations & comments +---------------------- +I assume that you set board to BIG endian! +Little endian not tested, most probably broken. + +I named the board dbau1x00, to allow +support for all three development boards +some day ( dbau1000, dbau1100 and dbau1500 ). + +I only have a dbau1000, so all testing is limited +to this board! + +The board has two different flash banks, that can +be selected via dip switch. This makes it possible +to test new bootloaders without thrashing the YAMON +boot loader deliviered with board. + +Ethernet only supported for mac0. + +Pcmcia only supported for slot 0, only 3.3V. + +Pcmcia IDE tested with Sandisk Compact Flash and +IBM microdrive. + +################################### +######## NOTE!!!!!! ######### +################################### +If you partition a disk on another system (e.g. laptop), +all bytes will be swapped on 16bit level when using +PCMCIA!!!! + +This is probably due to an error in Au1000 chip. + +Solution: + +a) Boot via network and partition disk directly from +dbau1x00. The endian will then be correct. + +b) Partition disk on "laptop" and fill it with all files +you need. Then write a simple program that endian swaps +whole disk, + +Example: +Original "laptop" byte order: +B0 B1 B2 B3 B4 B5 B6 B7 B8 B9... + +Dbau1000 byte order will then be: +B1 B0 B3 B2 B5 B4 B7 B6 B9 B8... |