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Gold Medal Software - Volume 5 (Gold Medal) (1995).iso
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OS2NOTES.TXT
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1995-01-16
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Using Jaleo Under OS/2
16-Jan-95 Jaleo insert.
Jaleo can be used under OS/2. The following may be of interest:
1) Jaleo does not need direct access to HW_TIMER and so can use the
virtual timer. However, if you select a AIR value > 1024 you will
have to use HW_TIMER ON (OS/2 only gives you a max of 1024 interrupts
per second with the virtual timer). Also, if using the virtual timer
(i.e., HW_TIMER OFF), going back to OS/2 will slow down Jaleo if you
are at AIR=1024 (OS/2 ticks at 1024Hz). Anyway, typically, you can
set HW_TIMER ON and have no ill effects, but you can use HW_TIMER OFF,
too.
Note: If you have an OPL2- or OPL3-based card (basic SBs, PAS-16, AdLib,
etc.) you may need to run with HW_TIMER ON. This because delays are
required when accessing this devices ports and the timing used by Ruckus
is exact. Since the virtual timer returns useless info when polling
the 8254 device (the PIT), the delays used by Ruckus are invalid. In
addition, if HW_TIMER is OFF, the LOAD-STAT view of the load % is also
invalid.
Exiting Jaleo should be done with Alt-X so that all systems are properly
shut down. Terminating Jaleo from OS/2 by closing it is not recommended.
2) I'm running Warp, with HPFS and FAT (see my CONFIG.SY_) and I have
no problems with speed. It'd be great to have more memory, but that
requires 16MB (8 1MB slots are filled now). I am running this editor
(SST, DOS), PWB (doing my Bullet/2 docs, also DOS), and Jaleo playing
ECHOES.MID, and playing it smoothly. WPS is there, too. What you
probably won't want to do is run a download with Jaleo going, but I
haven't tried any OS/2 comm programs (have ZOC 2.03 to try), so I don't
know -- maybe using HW_TIMER OFF will make this simple. Don't know yet.
Stay tuned.
------
0.67g: Okay, tried it with ZOC 2.03. Since it was getting CRC errors
(expected, actually), I added a priority selection. In the DEVICES area,
at the bottom, is PRIORITY. Select "System" for full-speed downloads
(I get 1610 using ZOC 2.03 with Jaleo blasting away). Select "Jaleo" for
smoothest sound. After starting your download (with system priority), you
can move Jaleo to the foreground for increased smoothness. It's not terribly
noticable with system priority for OPL or MPU-401 devices, but the GUS is
not so kind unless it has the run of the show. Nothing serious, but some
events are missed. Experiment. PRIORITY selection affects only the
8254/0 and RTC, not the OnCard clock sources. You cannot use the RTC under
OS/2 or Windows since the OS uses it for scheduling.
3) Included is a simple icon. You probably do not want to run Jaleo
as a Windowed app. If you do, the smaller the window the better. Using
the NONE or SYS-STAT view screens of Jaleo work the best; the others
tend to slow playback, at least on my system (i486/33, ISA-ET4000). Be
sure to have your autoexec.bat run any needed setup program. For example,
I have the GUS, its DB/16 and an SB16 with a Rio attach. I run the
GUSINIT program (that program unhooks the GUS from the SB16 OPL ports --
won't get OPL unless its run) and that's about it. The SB16 needs to
run SBCONFIG.EXE (or whatever it's called now, DIAGNOSE?); the Rio doesn't
need anything.
If you want max memory, use CGA as your video. That gets you about 100K more
for data storage, after the program's loaded. The background is black, though,
rather than gray. I'll see if I can get a copy of my DOS SETTINGS for my Jaleo
object. See SETTINGS.DOS for the output from the DOS SETTINGS print to file.
It's encoded format, but you should be able to figure it out by comparing it
to an output of your current default settings. The idea, in case you don't
know, is to make a "Jaleo" program object. This way, the settings only affect
Jaleo, and only when you start it (by clicking on the object). Make your
own AUTOEXEC.JAL that runs any needed setup. See mine as an example.
4) Jaleo will play up to 8 tunes. If you want these to repeat, in the
MANAGER, SETUP, MIDI dialog there is a menu for LOOP. Pick 2-List. This
loops through all the tunes (never ending). Related is the FADE. This
is the time spent waiting after the tune has ended and the time Jaleo
shuts it down, or if LOOP, starts the next tune. Sure, Jaleo may become
a full-blown app with jukebox-like features, but for now, it is nothing
more than a test program.
5) There seems to be mouse tracks left when you click on an item and that
area is not redrawn. This may just be a problem with my video driver.
It doesn't occur under straight DOS. If you don't like the mess (it's
not really that bad), just select another view and the redraw will clean
it up. You'll only notice this in the OKAY, CANCEL dialog button areas,
and only the character that is under the mouse cursor at the time of the click.
That's it for now.