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[docs/datasheet] minor edits

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stnolting 2021-06-06 00:39:33 +02:00
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7
docs/datasheet/software.adoc
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@ -118,7 +118,7 @@ available:
|=======================
| `help` | Show a short help text explaining all available targets.
| `check` | Check the compiler toolchain. You should run this target at least once after installing the toolchain.
| `info` | Show the makefile configuration (see next chapter).
| `info` | Show the makefile configuration (see section <<_configuration>>).
| `exe` | Compile all sources and generate application executable for upload via bootloader.
| `install` | Compile all sources, generate executable (via exe target) for upload via bootloader and generate and install IMEM VHDL initialization image file `rtl/core/neorv32_application_image.vhd`.
| `all` | Execute `exe` and `install`.
@ -228,7 +228,7 @@ For this purpose, the makefile uses the NEORV32-specific linker script `sw/commo
|=======================
The `iodev` section is reserved for processor-internal memory-mapped IO and peripheral devices. The linker does not use this section at all
and just passes the start and end adresses of this section to the start-up code `crt0.S` (see next section).
and just passes the start and end addresses of this section to the start-up code `crt0.S` (see section <<_start_up_code_crt0>>).
[NOTE]
The `rom` region is used to place the instructions of "normal" applications. If the bootloader is being compiled, the makefile defines the `make_bootloader`
@ -292,6 +292,9 @@ The `crt0.S` is directly executed right after a reset and performs the following
* Call the application's `main` function (with no arguments: `argc` = `argv` = 0).
* If the `main` function returns, the processor goes to an endless sleep mode (using a simple loop or via the `wfi` instruction if available).
[TIP]
The return code of the `main()` function can be evaluated by reading register `a0` (= 'x10') via the on-chip debugger.
<<<
// ####################################################################################################################