<!doctype linuxdoc system>
<article>
-
<title>Oric Telestrat-specific information for cc65
<author>
-<url url="mailto:jede@oric.org" name="Jede">,<newline>
-
-<date>2017-01-22
+<url url="mailto:jede@oric.org" name="Jede">
<abstract>
-An overview over the Telestrat (telemon 3.0 : http://orix.oric.org) runtime system as it is implemented for the cc65 C
-compiler.)
+An overview over the Telestrat (Telemon 2.4 & Telemon 3.x : http://orix.oric.org) runtime system as it is implemented for the cc65 C compiler.
</abstract>
<!-- Table of contents -->
<sect>Overview<p>
-This file contains an overview of the Telestrat runtime system as it comes with the
-cc65 C compiler. It describes the memory layout, Telestrat-specific header files,
-available drivers, and any pitfalls specific to that platform.
+This file contains an overview of the Telestrat runtime system as it comes
+with the cc65 C compiler. It describes the memory layout, Telestrat-specific
+header files, available drivers, and any pitfalls specific to that platform.
Please note that Telestrat-specific functions are just mentioned here, they are
described in detail in the separate <url url="funcref.html" name="function
more than one platform. Please see the function reference for more
information.
+Oric Telestrat is the last Oric computer (Released in 1986, mainly in France).
+This computer is an Atmos with extra hardware: RS232, cardridge(banking system),
+joysticks (2 ports) or mouse (on joystick port), FDC.
+
+Video chip, CPU, keyboard management, tape hardware are the same than Atmos.
+
+Telestrat can start in Atmos mode with Atmos Cardridge (which is only the atmos
+Basic 1.1 ROM).
+
+Telestrat can start in Sedoric (Atmos OS) and Atmos mode with Stratoric Cardridge.
+This Cardridge has 3 banks of 16KB of rom with:
+<itemize>
+<item>a Sedoric ROM.
+<item>a Basic 1.1 ROM (Atmos).
+<item>a Basic 1.0 ROM (Oric-1).
+</itemize>
+
+The main Telestrat's configuration is the Telemon/Hyperbasic Cardridge inserted
+with Stratsed in floppy drive.
+
+Anyway, there is no way to load a tape file in Telemon/Hyperbasic mode without
+alternative program.
+
+There is also no software to write a Stratsed dsk file on PC.
+
+This Telestrat target build an Orix binary file. But, in the future, it will be possible
+to build a Stratsed disk. Orix uses the same systems calls than Telemon mode.
+
+That is why if you need to do software for telestrat target, you have the choice to:
+<itemize>
+<item>use cc65 Atmos target and start Telestrat in Atmos mode: A tape file is required.
+<item>use cc65 Atmos target and start Telestrat in Stratoric mode: A dsk file or tape file is required.
+<item>use cc65 Telestrat target and start Telestrat in Orix mode (see <url
+name="here" url="http://orix.oric.org/download/">).
+<item>use cc65 Telestrat target, remove Orix header from binary, code a dsk tool for Stratsed,
+add Stratsed header on your binary,insert your binary on floppy disk (this solution will be possible is the future).
+</itemize>
+
+Telestrat (from cardridge) can handle 8 banks (from $C000 to $FFFF): Bank 0 is the overlay ram. Others banks can be ROM or RAM.
+
<sect>Binary format<p>
-The standard binary output format generated the linker for the Telestrat target
-is a machine language program with a 20 bytes header described here : http://orix.oric.org/doku.php?id=orix:header
+The standard binary output format generated the linker for the Telestrat
+target is a machine language program with a 20 bytes header described <url
+name="here" url="http://orix.oric.org/orix-header/">
-This header is used for Telemon 3.0.
+This header is used for Telemon 3.0.
-Anyway, for Telemon 2.4, there is no file management, there is no TAPE routine in telemon, there is no way to load a binary easiy.
+Anyway, for Telemon 2.4, there is no file management, there is no TAPE routine
+in Telemon, there is no way to load a binary easily.
-Stratsed (the Telestrat operating system) handles files management. Stratsed is loaded to memory from floppy disk.
+Stratsed (the Telestrat operating system) handles files management. Stratsed
+is loaded to memory from floppy disk. Stratsed vector are declared in asminc/telestrat.inc.
+But, reverse engineering is required to find how theses vectors works. Please, note that
+Stratsed is located in overlay memory (bank 0)
-There is no tool to insert a binary in a Stratsed floppy disk.
+There is no tool to insert a binary in a Stratsed floppy disk.
-The only way to load a binary (for Telemon 2.4) is to :
+The only way to load a binary (for Telemon 2.4) is to:
<itemize>
<item>remove the 20 bytes header
-<item>download osdk : http://osdk.defence-force.org/index?page=download
-<item>use Floppybuilder in OSDK to insert the binary with the tool (please read FloppyBuilder manual to insert your binary, and to start microdisc boot sector when telestrat starts)
+<item>download <url name="osdk" url="http://osdk.defence-force.org/index?page=download">
+<item>use Floppybuilder in OSDK to insert the binary with the tool (please read
+FloppyBuilder manual to learn how to insert your binary and how to start Microdisc boot sector
+when Telestrat starts)
</itemize>
+Please note also, that the binary converted into TAP file, will not produce
+a right stratsed file when tap2dsk and old2mfm are used. You will be in the
+case that Telestrat/Stratsed crashed when you do "DIR" command.
+If you know the Stratsed disk format, please contact the author of this doc.
<sect>Memory layout<p>
In the standard setup, cc65-generated programs use the memory from
$0801 to $9800; so, nearly 37K of memory (including the stack) is
-available. ROM calls are possible without further precautions.
-
+available. ROM calls are possible with BRK feature.
Special locations:
<sect>Platform-specific header files<p>
-Programs containing Telestrat -specific code may use the <tt/telestrat.h/ header file.
+Programs containing Telestrat-specific code may use the <tt/telestrat.h/ header file.
<sect1>Telestrat-specific functions<p>
Access to the VIA (Versatile Interface Adapter) chip is available via the
<tt/VIA/ variable. The structure behind this variable is explained in <tt/_6522.h/.
-</descrip><p>
+ <tag><tt/VIA2/</tag>
+ Access to the VIA2 (Versatile Interface Adapter) chip is available via the
+ <tt/VIA2/ variable. The structure behind this variable is explained in <tt/_6522.h/.
+ <tag><tt/ACIA/</tag>
+ Access to the 6551 ACIA chip is available via the
+ <tt/ACIA/ variable. The structure behind this variable is explained in <tt/_6551.h/.
+
+</descrip><p>
<sect>Loadable drivers<p>
-<sect1>
Extended memory drivers<p>
-No extended memory drivers are currently available for the Telestrat.
+TGI drivers is available on Oric Telestrat with some functions:
+<itemize>
+<item>tgi_clear
+<item>tgi_done
+<item>tgi_init
+<item>tgi_install
+<item>tgi_line
+<item>tgi_outtext
+<item>tgi_setpixel
+</itemize>
-<sect1>Joystick drivers<p>
-<descrip>
+<sect1>Extended memory drivers<p>
-telemon 2.4 & 3.0 manages joysticks but it had been handled yet.
+No extended memory drivers are currently available for the Telestrat.
+This feature could be done because telestrat can manage RAM inserted in his
+port cardridge.
-</descrip><p>
+<sect1>Joystick drivers<p>
+
+Telemon 2.4 & 3.0 manages joysticks but it had been handled yet. This means that
+joysticks driver could be written easily.
+Telemon 2.4 returns in keyboard buffer the direction of the joysticks. This means that
+if you get input from keyboard by conio cgetc function, you will get direction from joysticks.
<sect1>Mouse drivers<p>
Telestrat manages also mouse, but it had been no handled yet in this version.
+Telestrat mouse is really difficult to find.
<sect1>RS232 device drivers<p>
-<descrip>
-
-not done
-
-</descrip><p>
+Telestrat has a RS232 port, but it's not usable in cc65. It is possible to use
+RS232 port with Telemon calls (see XSOUT primitive for example)
<sect>Limitations<label id="limitations"><p>
<sect1>Disk I/O<p>
-This version handles fopen, fread, fclose primitives. Because Telemon 3.0 handles these three primitives. By the way,
-it uses an extension "ch376 card" which handles sdcard and FAT 32 usb key. In the next version of Telemon, FT DOS, Sedoric, Stratsed will be handled in these 3 primitives.
+Telemon 3.0 handles fopen, fread, fclose primitives. It means that this
+function will crash the Telestrat because Telemon 2.4 does not have these
+primitives. By the way, Telemon 3.0 uses an extension "ch376 card" which
+handles sdcard and FAT 32 usb key. In the next version of Telemon, FT DOS, Sedoric, Stratsed will be handled in these 3 primitives (fopen, fread, fclose).
<itemize>
<item>fclose
freely, subject to the following restrictions:
<enum>
-<item> The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
-<item> Altered source versions must be plainly marked as such, and must not
- be misrepresented as being the original software.
-<item> This notice may not be removed or altered from any source
- distribution.
+<item> The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+<item> Altered source versions must be plainly marked as such, and must not
+ be misrepresented as being the original software.
+<item> This notice may not be removed or altered from any source
+ distribution.
</enum>
</article>
projects / cc65 / blobdiff