Update README file.
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@ -217,12 +217,21 @@ Configurations
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lcd:
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This is an NSH configuration based on the nsh configuration belong but with LCD
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support enabled. This configuration will be used for developing and verifying
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basic LCD functionality.
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This is an NSH configuration based on the nsh configuration belong but
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with LCD support enabled. This configuration will be used for developing
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and verifying basic LCD functionality.
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The framebuffer is assumed to reside at address 0x80000000 and has size
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0x0a000000.
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NOTES:
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1. The framebuffer is assumed to reside at address 0x80000000 and has a
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maximum size 0x0a000000, although probably less than 1Mb will actually
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be used for the framebuffer.
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2. The HDMI interface is assumed. The TDA19988 HDMI interface is enabled.
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STATUS:
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2019-07-09: This is very much a work in progress and not suitable for
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any use other than testing.
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nsh:
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@ -379,12 +379,20 @@ Configuration Subdirectories
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NOTE: The is no card detect signal so the microSD card must be
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placed in the card slot before the system is started.
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4. Optimizations:
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4. Debugging the RAM version
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You can debug the all RAM version using ZDS-II as follows:
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a. Connect to the debugger,
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b. Load the nuttx.lod file
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c. Set the PC to 0x040000
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d. Single step a few times to make sure things look good, then
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e. "GO"
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5. Optimizations:
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- The stack sizes have not been tuned and, hence, are probably too
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large.
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- Currently the code runs out of FLASH. Running out of the zero-
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wait-state RAM would be much faster!
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STATUS:
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2019-06-16: The basic NSH configuration appears to be fully functional
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@ -406,6 +414,15 @@ Configuration Subdirectories
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2019-06-26: Renamed nsh configuration to nsh_flash. Added nsh_ram
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configuration. Not yet verified.
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2019-07-09: The RAM version does not run! I can single step through
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the initialization and all looks well, but when I "GO", the system
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crashes. The PC is sitting at a crazy address when I break in. I
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have not yet debugged this.
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The identical FLASH version, differing only in the selected linker
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script, works just fine. This implies some issue with the
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configuration of SRAM for execution.
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sdboot
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This configuration implements a very simple boot loader. In runs from
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