| 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... |