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xtrs README
^^^^^^^^^^^^^
Current status
^^^^^^^^^^^^^^
The xtrs port is not operational yet; some work still needs to be done.
Contents
^^^^^^^^
o Getting a TRS80 emulator and DOS disks
o Loading an executable into xtrs
o Configuring NuttX
o SDCC
o Building the SDCC toolchain
o SDCC Update
o Newer SDCC Versions
Getting a TRS80 emulator and DOS disks
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This port uses a vintage computer based on the Z80, the TRS80.
There's a main page describing the different models of TRS80.
See: http://www.trs-80.com
An emulator for this computer is available to run TRS80 programs on a
linux platform (http://www.tim-mann.org/xtrs.html).
Other emulators are available for other platforms.
See http://www.trs-80.com, click on the link Emulators.
TRSDOS, LDOS and other softwares are available at:
http://discover-net.net/~dmkeil/trs80/software/trs-dos.htm
Or you can get TRSDOS 1.3 and 6.1 from this site; it's included with the emulator.
http://discover-net.net/~dmkeil/trs80/model4.htm
The SDCC toolchain is available from http://sdcc.sourceforge.net/. All
testing has been performed using version 2.7.0 of the SDCC toolchain.
Loading an executable into xtrs
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
At http://www.trs-80.com click on the link: Getting a Software Onto an Emulator.
Configuring NuttX
^^^^^^^^^^^^^^^^^
ostest
This configuration performs a simple, minimal OS test using
examples/ostest. This can be configurated as follows:
cd tools
./configure.sh xtrs/ostest
cd -
. ./setenv.sh
nsh
This configuration file builds NSH (examples/nsh). This
configuration is not functional due to issues with use of the
simulated serial driver (see the TODO list).
This configuration can be selected by:
cd tools
./configure.sh xtrs/nsh
cd -
. ./setenv.sh
pashello
Configures to use examples/pashello for execution from FLASH
See examples/README.txt for information about pashello.
This configuration is not usable because the resulting binary
is too large for the z80 address space.
This configuration can be selected by:
cd tools
./configure.sh xtrs/pashello
cd -
. ./setenv.sh
SDCC
^^^^
These z80 configurations all use the SDCC toolchain (http://sdcc.sourceforge.net/).
Source and pre-built SDCC binaries can be downloaded from the SDCC SourceForge
site: http://sourceforge.net/projects/sdcc/files/ . Pre-built binaries are
available for Linux, MAC OSX, and for Win32. Various SDCC options can be
selected with:
CONFIG_Z80_TOOLCHAIN_SDCCL=y : SDCC for Linux, MAC OSX or Cygwin (see below)
CONFIG_Z80_TOOLCHAIN_SDCCW=y : SDCC for Win32
SDCC versions 3.2.0 or higher are recommended.
Building the SDCC toolchain
^^^^^^^^^^^^^^^^^^^^^^^^^^^
You may also want to build your own SDCC toolchain. You might want to do this,
for example, if you are running under Cygwin and want a Cygwin compatible
SDCC toolchain.
The SDCC toolchain is built with the standard configure/make/make install
sequence. However, some special actions are required to generate libraries
compatible with this build. First start with the usual steps
download
unpack
cd sdcc
./configure
But before making, we need to apply a patch to the SDCC 2.6.0 source
so that the z80 assembler can handle long symbol names
Apply sdcc-2.6.0-asz80-symlen.patch
cd sdcc/device/lib
Then make the SDCC binaries
cd sdcc
make
and install SDCC:
sudo make install
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