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- ◆ **************************************************
- *** ***
- *** Loader for ***
- *** ^^^^^^^^^^ ***
- *** F68K ***
- *** ^^^^ ***
- *** on the ***
- *** Sinclair QL ***
- *** ***
- *** by Dirk Kutscher ***
- *** ***
- **************************************************
-
- Content
- Hardware Requirements
- Files
- Getting started
- Special features
- Problems?
- Remark
-
-
- *************************
- * Hardware Requirements *
- *************************
-
- To start F68K on your QL you need at least one 3.5" disc drive and a
- minimum of 256 KB RAM. If you lack the disc drive you might be able to
- run F68K but should not try to use the Streaminterface to access
- DEVICE1_SCR since it is assumed to provide 300 blocks which you cannot
- emulate on microdrive. I am working at a mdv version at the moment.
-
-
- ************
- * FILES *
- ************
-
- The loader consists of the following files:
-
- bootF68K_QL This is a SuperBASIC-program which initialises the
- F68K-Disc for the use on a QL-System. If your F68K
- version was distributed on Atari Disc it is necessary to
- recreate the QLF68K_exe file (as well as QLCONFIG_exe)
- since the job information in the header of QL-files
- (Dataspace etc.) is not available on Atari Discs. Once
- you have run this program on your QL Disc you can
- happily forget it.
-
- QLF68K_EXE This the EXECutable loader created by boot. Start F68K
- by typing 'EXEC flp1_QLF68K_EXE'. Of course you can
- also use QRAM etc..
-
- QLF68K_CDE This is the machinecode program for loading F68K. If
- you have the -exe file installed it should not concern
- you anymore.
-
- QLF68K_ASM This is the assembler source for the loader. It will
- probably only assemble on Talent's Workbench Assembler,
- but it might give you some ideas of how to write your
- own loaders. (Of course you may also use it to expand
- the loader).
-
- QLF68K_TXT this one
-
- CHANGES_TXT loader development documentation
-
- QLCONFIG_exe This is the configuration utility for QLF68K_exe. It
- gives you the possiblity to patch the following
- filenames according to your personal hardware
- environment:
-
- flp1_F68K_img (the F68K bit image)
- flp1_F68K_out (the F68K output file)
- flp1_F68K_in (the F68K input file)
- flp1_DEVICE1_scr (Blockdevice for RW-access)
- flp1_STREAMS_scr ""
- ser1 (Printer device)
-
- If you like to keep these names you just have to confirm
- by hitting ENTER. You are then asked (in German), if you
- would like these names (except for the printer) to be
- questioned again when starting F68K. For experiments,
- first attempts etc. it might be useful to answer 'j'
- (for 'yes'). If you are familar with the system or even
- want save a complete application 'n' (for 'No') will
- make the loader start F68K directly when executed.
-
- QLCONFIG_cde The mc-file for the configuration utility. Loaded by
- bootF68K_QL.
-
-
- *******************
- * Getting started *
- *******************
-
- On executing QLF68K_exe the program first tries to allocate enough
- space in the memory for F68K. If the neccessary amount of bytes
- ($10000 + $20028 for code and data) is not available the
- execution will terminate.
-
- After this the program opens the console and gives you the
- possibility to change the names for the necessary files. (See
- files.QLConfig_exe) If you do change the names (e.g. the device)
- you should make sure that these files really exist and that they
- also can be accessed in the same way as the original file names. If
- no change is necessary just confirm by hitting ENTER.
-
- Now the program is loading the F68K-file (i.e 'flp1_F68K_IMG'). If
- loading has been succesful F68K should now prompt with the
- copyright note and with it's 'ok'.
-
- If you want to access the Blockdevice now you should make sure that
- you can provide the specified files (e.g. DEVICE1_SCR and STREAMS_SCR)
- on the specified devices otherwise you might at least get an error
- report by QDOS or F68K. You do not have to worry about closing
- channels when changing discs (e.g. on a multitasking QL), since the RW
- routines are somewhat 'atomic' in this regard: They open and close
- their channels each time they are called. At first this seems to slow
- down the block accesses but thanks to QDOS this impression vanishes
- because all the often called directory blocks etc. are stored in slave
- blocks of the QDOS filing system.
-
-
- ********************
- * Special features *
- ********************
-
- Since F68K's editor uses VT52-sequences to control the cursor
- etc., which is normally non-standard on the QL, these control
- codes are emulated by the loader's I/O routines. There is also a
- translation table for some special characters ("Deutsche Umlaute")
- including ENTER, BACKSPACE etc.
-
- Nevertheless the user may still redirect I/O as he desires. I have
- provided three different EMIT routines each giving a different degree
- of emulation: Default is full emulation. The VT52-sequences as well as
- the the translation tables are supported. You could switch between
- these different modes by some simple FORTH words:
-
- : VT52_OFF ( -- ) EMITS 8 + @ ^EMIT ! ;
-
- : VT52_ON ( -- ) EMITS 4 + @ ^EMIT ! ;
-
- : NO_TRANSLATION ( -- ) EMITS 12 + @ ^EMIT ! ;
-
-
- *************
- * Problems? *
- *************
-
- Problems may occur if you have got the TOS-formatted F68K disc and are
- not able to create the appropriate QL disc, probably because you lack
- a disc driver or a transformation utility. In such a case you can send
- me (adress below) two QDOS-formatted 3.5" discs AND a paid and
- self-adressed envelope and I will rush you the latest QL version as
- soon as possible.
-
-
- **********
- * Remark *
- **********
-
- I have written this loader to support both the spread of the
- programming language Forth and QDOS, the operating system of the QL.
- So you can make as many copies of the loader as you want and also
- distribute them as long as no profit is gained by the distribution. I
- would also like my name to be kept visible etc...
-
- The programme has been successfully tested on R. Kowallik's
- QL-Emulator for the Amiga.
-
- I have no objections to somebody writing a C version of the loader nor
- other improvements. I would be pleased to hear from you then!
-
- For suggestions, questions or any other comments please use the
- following adress:
-
- Dirk Kutscher
- Kastanienweg 39
- 2804 Lilienthal
- Germany
-
- You can also contact me via eMail using one of the following adresses:
-
- Dirk_Kutscher@HB.MAUS.DE
-
- Karl @ BBS.FORTH-eV.de
- ◆
-