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1994-08-11
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PLAYSID.LIBRARY V1.0 (C)1994 Per Hσkan Sundell & Ron Birk
Release date: 1 June 1994
NOTE:
This is SHAREWARE, not Public Domain. That means that if you like
this program and want further updates, you can be a registered owner
by sending us $15. It also means that you can copy this program only
if all files (including this) are included and nothing is changed.
You are not allowed to replicate any portion of the program, both
code or data. Note also that we take no responsibilities for the use
of this program considering any damage to or failure of your hardware
, software etc.
You have the permission to put this unmodified and full archive on
any BBS, FTP site, CD Rom, Magazine, Disk etc. In other words, the
archive may be freely distributed as long as no more than a nominal
fee is charged to cover time and copying costs.
If you just like the program, PLEASE let us know so by sending us a
postcard or similiar to the addresses below.
NEW FEATURES:
V1.0 (1994)
* New, faster and better sound and waveform routines
* PAL and NTSC TV System simulation
* Channel on/off selection
* Support for Compute! SID ".mus" files
* Audio device and cia timers allocated only when playing
* Icon tooltypes now have default settings, if omitted
PRODUCT INFO:
The playsid.library is a standard amiga library where all the c64
music emulation is done. You can now add support for PlaySID modules
in your own programs!! REMEMBER, you still need to supply the whole
PlaySID archive with your program and CAN NOT only extract the
library.
This library emulates the SID and 6510 chip. The SID chip is the
component in the C64 computer that handles sound. The 6510 chip
is the CPU of the C64, that means the component that actually
executes all programs. Because the Amiga does not have these chips
and others, you can't run C64 programs directly on Amiga.
Now this library lets you play all those C64 programs that produce
sound. As you probably know, the C64 has three sound channels (the
amiga has four). But this utility also allows use of the fourth
channel. This channel is the product of some special programming on
the C64, it isn't really a channel.
The purpose of this product is to make the best conversion of C64
sound on Amiga ever possible. If you think some sound isn't correctly
converted please let us know.
This utility is designed to work with true multitasking, under any
system version and any amiga model. It can be run from both Workbench
and CLI/Shell. It should work with any other program that don't use
sound or timing. If this isn't the fact please let us know.
PROGRAM INSTALLATION:
To install playsid.library copy it to your LIBS: directory by hand,
or run the installation script 'Install' (by using 'Execute' or by
doubleclicking its icon).
FILE FORMAT:
playsid.library needs a PlaySID module header and a C64 data file to
work. One-file modules have the header in front of the data. Icon
files have the header data as icon tooltypes instead. The library
support a conversion to a module header.
TECHNICAL INFO:
Up to date playsid.library features:
* Full emulation of 6510 instructions
* Full envelope emulation (even better than SID)
* Full waveform emulation (uses highest quality ever possible)
* Full ringmodulation/synchronize emulation (even both!)
* Emulation of the fourth channel, including Martin Galway NOISE
and all kind of SAMPLES
* Sounding like C64 PAL and C64 NTSC on all Amigas
* Handles vertical sync, 60Hz and variable speed timing
* Fast Forward and Rewind!
* Timer (holds the actaul time, dependant of forward/rewind)
* Amiga 4 kHz Filter ON/OFF (should be off)
* Full TRUE Multitasking (opens, closes and checks everything)
* Above new feutures
playsid.library is written with GnuEmacs 18.58 and compiled with
SAS/C 6.50 and Devpac 3.02 assembler. It uses about 50kB of chip
memory and 160kB of other memory. If playing samples or rewind
option is on, more memory will be used. Also add the length of the
tune to the amount of other memory.
FUTURE FEATURES:
This is a list of features that still isn't included into the current
version. They will probably be included in future versions.
* Emulation of Filter.
* Option to load and play Tunes which are already emulated.
* Support for other c64 module players
* Features YOU would like to be added (PLEASE WRITE AND TELL US).
CONVERSION:
If you convert by yourself, PLEASE send them to us, using e-mail or
regular mail, so we can release complete packages. Then the user will
not get several packages with same or bad tunes. PLEASE, supply full
information (name, author and copyright).
If you want to help us with conversion, we would be very pleased. We
have a lot of disks on 1541-format and Amiga-format with already
ripped tunes. On a lot of the files, the only work to do, is to find
the addresses of the initroutines. Some of them are splitted in
several files but the most of them are one-parted. If you don't have
a C64 anymore but still have the knowledge of 6502, we could also
supply you with a fast C64emulator with a machinecodemonitor made by
ourselves. If you would want these files, please send some blank
disks (in either format) to any address belove. If it shows up that
you are a good converter, then you will have the next updates for
free.
For more information about conversion, read the supplied docs.
REGISTRATION:
If you want to support our work, you have the option to become a
registered owner of this utility and receive further upgrades WHEN
THEY ARE READY. Send $15 USD (US DOLLAR) or equal amount in SEK
(Swedish Krona) or DM (German Mark). Send it to either address below
with your name, address, e-mail, phone etc. If you later change
address, PLEASE let us know.
Hσkan Sundell Ron Birk
Dr. Lindhs Gata 3,II Kr÷garvΣgen 11
413 25 G÷teborg 145 52 Norsborg
SWEDEN SWEDEN
Those of you who already are registered users and have got one or
more upgrade version, and want further upgrades can send either a
fully post-paid return letter (swedish stamps!) with a disk or $5
USD (or equal) for our expenses. You can do this right now so that
you will get the upgrade the same moment it is ready.
CONTACT ADRESSES:
You will reach us through usual mail, phone or Internet mail. Regular
mail is very slow so Internet mail is the best way to reach us and is
usually answered the very same day!
If you want to call us about suggestions, bug report or complains
about PlaySID you may call:
+46 (0)31 419 418 (Hσkan) about 6502 and SID Emulation
+46 (0)8 531 88626 (Ron) about Library, User Interface and Features
If you have access to Internet you will reach us at the following
e-mail addresses:
md1phs@mdstud.chalmers.se (Hσkan)
rbk@ios.se (Ron)
NOTE TO OTHER DEVELOPERS:
To Questronix (The makers of The A64 Package):
We are still offering you our SID emulation to your C64 Emulator
(We have listened to your noise emulation). And if that is
interresting, we could help with the Cassette interface (including
software) too! It's connected as a diskdrive, and it works very fine.
THANKS:
We want to thank the following people for helping us with the
development of PlaySID:
Robert Eichelsheim - For supporting us with extremely many ripped
tunes and for information about the authors
and copyrights. For beta testings and good
suggestions about improvements.
Bent Nielsen - For supporting good ideas and algorithms
about synthesized waveforms.
Alexander Andelkovic - For lending us your C64, 1541 and many
games to rip songs from.
Peter Kunath - For good suggestions and beta testing.
Stefan Boberg - For early beta tests and good suggestions.
??? (Florida?) - For giving us the Compute! SID player.
Teijo Kinnunen - For making MED! It inspired us to make
PlaySID multitask.
Olaf Barthel - For making Term! Without it we would still
use snail mail during development, as we
live 460 km from each other.
Registered Users - Thanks for supporting our work. You are
the reason for our work.
Commodore-Amiga - For making all this possible!
LAST WORDS:
We hope that you will find this program useful and that
it will bring back the old C64 athmosphere to you too...