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mus/misc/MOD_Professor.lha |
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Revision V0.9
This version looks much the same as V0.8 apart from the addition of the
NoiseTracker routine. The main addition is that the executable modules
created with this version all signal one another on startup. That is to say
that if a module is playing when you try to run another module the first
module is signaled by the second module. When this happens the first module
will shut down releasing the cia and audio channels. Once it has done this
it will return the message telling the second module that it is OK to run.
The program on this disk is my entry for the silliest program name of the
month.It is still in it's early stages but is quite usable as is.I have a
few plans for enhancements but more of that later.MOD_Professor is an
Intuition based program that allows you to create executable modules.The
actual playroutines have all been reworked and all are more stable than
before however I'me still not 100% happy with the Soundmon and GMC players.
The soundmon plays OK most of the time but sometimes plays high pitched
squeeks when using sampled instruments (it's plays OK with synthetical
instruments).The GMC player behaves much the same - only worse.I'll have
a good look at these sometime.Both these problems are somewhere in the
original playroutine code.
Perhaps the most important change to these routines is the removal
of the verticle blank routine.These playroutines now run from CIA interrupts.
The idea for this comes from the sidmon routine on a previous Newsflash.The
main difference here though is that the code is legal,that is it doesn't
hit the hardware,it goes through the CIA resource.The code first checks to
see if CIA B timer B is available,if it isn't it will try CIA B timer A and
if this also is in use the program will quit with the returncode set to
warn.If all goes well (it usually does) the progam will set up an interrupt
server and attach it to the timer with CIA resource function AddICRVector.
The timer will then be set up for a 50 Hz interrupt.The playroutines also
check to see if they are running on a PAL or NTSC machine and set the timer
up accordingly.I could probably have got away without doing this as there is
only about .9% difference in speed using CIA interrupts as opposed to the
20% difference with VBlank interrupts.Now all machines should play at exactly
the same speed,important if Newsflash is to be distributed in America.Im sure
that they weren't impressed with the songs playing 20% too fast.
The MOD_Professor (think I'll change the name anyway) uses the ARP library
for it's Filerequester and a few other routines and so won't run without it
and will print an error message if it isn't present (CLI only).When MOD
thingy is run (WBench or CLI)it first loads all the libraries.If the program
is run from a disk other than the system disk,and the system disk isn't in
any drive you will be asked to replace it.What is happening here is the
program is trying to load the Icon library.If you don't require Icons or you
want to save memory click on cancel.When the program runs the icon menu
option will be ghosted and unavailable if the icon library wasn't loaded.
Now having run Mod whatsit you will be faced with a small window on the
workbench.I opted to do this so as to save memory - some modules are very
long.It would have been nice to have a pretty mulicoloured screen with
impressive graphics but I'me a lousy artist so hard luck!
You may now load a module,the types supported are Old and New Soundtracker,
Brian Posta's Soundmonitor,Game MusicCreator and Musical Enlightenment.
Just click on load,press right Amiga O or select open from the menu and
the load requester will appear.It is the standard Arp requester so most
people should quickly feel at home here.Select the module you want then
click OK.The module should load,you will be informed if an error occurs.
When the module has loaded the program will give you a little information
about the module ie it's size,name (not nesessarily the same as the file
name),the size of the executable that will be saved and the module type
selected.Note the Type isn't automatic (not yet anyway) you set it yourself.
You may now (if you haven't already) set the module type.Use the menu
options or right Amiga 1 to 5 to set the module type.Th e module is now ready
to be saved.If you want an Icon to be saved with the file press right Amiga
I or select Icon from the menu and a checkmark (tick) will appear beside
the Icon menu item (only if the Icon library was loaded).All files will now
save with an icon until you select icon again (it toggles on and off).Click
the save gadget,right Amiga S or Save from the menu and the save requester
will appear.The load and save requesters are seperate and will remember the
last path used.Earlier versions of this program used the same filerequest
structure for both requesters so that changing the path of one changed the
path of the other.This way uses a little more memory but makes life a little
easier,especially when converting lots of modules.The save requester is a
different colour just so you will know at a glance which you are using.Use
the requester to set the path then click in the lower file string gadget
and type in the filename you wish to use.You may,if you wish to overwrite
an existing file you may of course click on the filename then click OK or
double click the filename.If you elect to overwrite an existing file (or do
it by accident) a requester will appear asking you to confirm or cancel.The
file should now save,if there are any errors you will be informed what went
wrong with textual error messages in the Status line.If the error is one
that I hadn't anticipated (though I think I've covered them all) the message
will read
ERROR AmigaDOS Error (Number) where Number = the error number (you'll have
to look it up).
If all goes well you should now have an executable file saved to disk.The
best thing to do now is run the executable to see if it works OK and to have
a little dance.If it doesn't play correctly go back and check that you had
the correct module type set.For soundtracker modules try the other
soundtracker type ie if you used Old Soundtracker try New Soundtracker.
Future versions of this program will probably have better graphics and also
include a play module option.Also planned for future versions is support for
other music programs like MED, Noisetracker (slightly different to
Soundtracker modules and possibly Quartet,but that depends upon distribution
rights for the playroutine code.If you think of anything else that would be
useful let me know and I'll try to fit it into the next release.
Steve Marshall Unstone,Sheffield,England (28-May-90)
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Contents of mus/misc/MOD_Professor.lha
PERMISSION UID GID PACKED SIZE RATIO METHOD CRC STAMP NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown] 11598 26656 43.5% -lh5- 58e0 Jul 28 21:52 MOD_Professor
[unknown] 3164 7043 44.9% -lh5- 6daf Jul 28 21:52 MOD_Professor.doc
---------- ----------- ------- ------- ------ ---------- ------------ ----------
Total 2 files 14762 33699 43.8% Aug 5 18:32
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