Ross Thompson
77a89c30de
Fixed bug with the external memory region selection.
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Updated bios program to copy just 127MB to dram.
2021-10-19 11:23:23 -05:00
Ross Thompson
c90d129498
Fixed boot loader program to start at correct address.
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modified script which converts the ram.txt into preload text file for sdc simulation.
created script to convert ram.txt into binary to write to flash card.
added top level for solo sd card fpga.
2021-10-11 17:22:23 -05:00
Ross Thompson
f2c1ca4bd5
added support to due partial fpga simulation.
2021-09-26 15:00:00 -05:00
Ross Thompson
6dc25e07c2
Updated the fpga bios code to emulate the same behavior as qemu's bootloader and it also copies
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the flash card to dram.
Fixed latch issue in the sd card reader.
2021-09-26 13:22:23 -05:00
Ross Thompson
8e29d4472e
GPIO marker to indicate the sdc to dram transfer complete.
2021-09-25 19:29:15 -05:00
Ross Thompson
5bdd6a9d0c
Almost done writting driver for flash card reader.
2021-09-25 19:05:07 -05:00
Ross Thompson
3a15cc7872
We now have a rough sdc read routine.
2021-09-25 17:51:38 -05:00
Ross Thompson
dd9fe60b28
Write of the SDC address register is correct. The command register is not yet working.
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The root problem is the command register needs to be reset at the end of the SDC transaction.
2021-09-24 18:48:11 -05:00
Ross Thompson
5663522a3f
Now have software interacting with the initialization and settting the address register.
2021-09-24 18:30:26 -05:00
Ross Thompson
232d4a554f
Have program which checks for sdc init and issues read, but read done is
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not correctly being read back by the software. The error is in how the
sdc indicates busy.
2021-09-24 15:53:38 -05:00
