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------------------------------------------------------------------------------ The High Voltage SID Collection (HVSC) -> Frequently Asked Questions <- Last Updated: Mar 02, 2002 ------------------------------------------------------------------------------ Very Common Questions [1] What is the High Voltage SID Collection (HVSC)? [2] What software and hardware do I need to play the tunes in HVSC? [3] So then, do I need to hook up a SID chip to my PC? Or what? [4] Isn't Commodore C64 music just silly beep-blop music? [5] Why should I get HVSC when I already have NemeSIDs? [6] Which tunes are added to HVSC, and why? [7] Why aren't there any Compute Gazette SIDPlayer tunes in HVSC? [8] What is the SID Tune Information List (STIL)? [9] Why doesn't HVSC support MSDOS's 8.3 filename convention? Updates [10] When will the next update be released? [11] Do I have to download all of HVSC after each update? [12] Why isn't the update tool available for my system? [13] Why do the updates sometimes add SIDs that HVSC already has? [14] After I ran the Update, I can no longer find some SIDs. Where did they go? General Questions [15] How can I tell what version of HVSC I have? [16] Why should I get HVSC when I can just load up the game/demo and hear the music on a real C64? [17] Why do some tunes sound different compared to how I remember them on the C64? [18] How do I rip SID tunes from games/demos? [19] Why isn't tune X in HVSC? [20] I can't find tune Y in HVSC which was used in an old intro/demo. Can you tell me where it is? [21] Why do some of the tunes in HVSC not play? [22] Why are there some incorrect or ugly-looking credits in HVSC? [23] Why does HVSC take up so much space on my hard drive? [24] Can I just download the individual tunes I want? [25] How is it determined which composers go under the /VARIOUS dir? [26] Do you offer HVSC on CD? [27] Is the High Voltage SID Collection related to the High Voltage CDs? [28] Did you know that my virus checker reports some SIDs as having viruses? [29] When will HVSC be completed? [30] I find myself listening to SID music all the time. Am I normal? [31] So how do I make my own SID tunes? ------------------------------------------------------------------------------ [1] What is the High Voltage SID Collection (HVSC)? --------------------------------------------------- HVSC is the ultimate SID tune collection featuring over 18,000 popular and requested SIDs from the Commodore 64. The collection includes SIDs (aka C64 music) from games, demos, intros, etc. HVSC has been in the making for six years and is the result of many contributors. [2] What software and hardware do I need to play the tunes in HVSC? ------------------------------------------------------------------- Lucky for you, there are many devoted SID fans throughout the world. Many people have created or ported SID emulators to various OSes. To name a few: Win95, Win3.1, Linux, MSDOS, MacOS, AmigaOS, Atari Falcon, BeOS, OS/2, etc. For a complete list of which OSs are supported, see the HVSC web page. You can also listen to the SIDs in HVSC on a real C64 with Real SID Play. More information is available on the HVSC web page. As for additional hardware, you only need a sound card. In addition to using your home computer, there are hardware devices out there that utilize the SID chip itself in conjunction with your sound card. See http://www.hardsid.com and http://www.sidstation.com for more information. [3] So then, do I need to hook up a SID chip to my PC? Or what? ---------------------------------------------------------------- No, absolutely not. See question [2]. [4] Isn't Commodore C64 music just silly beep-blop music? --------------------------------------------------------- Absolutely not! Although the C64 went into production in 1983, do not underestimate the C64's technology. In fact, Byte Magazine named the C64's Sound Interface Device (SID) as one of the 20 most important chips in computer history along side the PowerPC, Intel 8086, and Pentium. After all, there has to be a reason why there are so many SID fans. You should note that there were two distinctive regions for SID music, America and Europe. American SID music is on average lower in quality compared to European SID music. This is not to say that American SID music is crap, but if you are judging SID music based on the American SID music you have heard, I can understand partially why you might think SID music is silly. Why is American SID music lacking compared to European SID music? Mainly this has to do with much information sharing related to the SID composing tools in Europe (not to mention some theft as well). The best way for you to determine if SID music is or isn't for you is to listen to some of the best. Take a listen to some Hubbard, Galway, Daglish, Gray (Fred and Matt) and Tel. If you do not like any of those artists, then there is a strong chance you will not like any SID music. You should also note that C64 music has been played not just on specialist radio shows like the KDVS 6581 SID show (now sadly no longer with us) but also on Swedish national television. So much for silly beep-blop then :) [5] Why should I get HVSC when I already have NemeSIDs? ------------------------------------------------------- NemeSIDs was the only other legitimate, large-scale SID collection available on the Internet. Primarily created for PLAYSID (Amiga) users, NemeSIDs was a great collection in its time. HVSC, on the other hand, was built off of all the collections available on the Internet, plus we've added thousands of SIDs from various people. This means that HVSC has all of the tunes found in NemeSIDs, except for NemeSIDs 18-19 (Compute Gazette SIDPlayer SIDs). Further, we have spent many months adding 100% rips, fixing SID credits, and deleting repeated SIDs. NemeSIDs, formerly maintained by Nemesis1, has not received an update since June 1996. In addition, NemeSIDs required the user to manually update the collection. With HVSC, updates are automated. If you doubt what we say, then please, by all means, go download HVSC and compare it to NemeSIDs yourself. We are confident that if you do such, you will end up keeping HVSC. [6] Which tunes are added to HVSC, and why? ------------------------------------------- HVSC adds music from games, and C64 scene programs (whether they be from demos, stand alone music packs, or disk magazines) which have been released into the public domain. However, we do not normally add any Compute! Gazette tunes (see [7]). Thus, if a tune has been released publically including C64 FTP or WWW sites, this means it also allows for any other public collection such as HVSC to place it in their collections as well using the same unrestricted and free ethics that public domain software allows. We do this so that HVSC serves as an archive, not just for the SID fans, but for the composers as well if they ever need to refer to their work. There are also some previously unreleased tunes by composers which HVSC also has (such as /Gray_Fred/Sled.sid), where the HVSC Crew strictly asks for _composer permission_ before releasing such. [7] Why aren't there any Compute Gazette SIDPlayer tunes in HVSC? ----------------------------------------------------------------- Mainly, because on average they do not sound as good as non-SIDPlayer tunes. SIDPlayer was a public domain SID composer and player available in the early '80s on the C64. The tool was predominately used by Americans and has a strong following among the public domain audience. SIDPlayer tunes are usually follow by a ".mus" and can be found on some C64 ftp sites. The best Compute! Gazette SID tune collection HVSC knows of is maintained by Peter Weighill and the latest version can be found here: http://www.c64music.co.uk/ (please note the old link does not work anymore) (note: do not confuse SIDPlayer with SIDPlay. SIDPlay is a SID emulator where as SIDPlayer is a SID player for the C64. Confusion is easy when there is SIDPlay, PLAYSID (Amiga), SIDPlayer (C64), Real SIDPlay (C64), etc.) [8] What is the SID Tune Information List (STIL)? ------------------------------------------------- The STIL is basically a text file which contains general information about the SIDs in HVSC. Such information includes the original composer's name, defects in certain tunes, interesting trivia, etc. Consult the STIL FAQ for more information. Hopefully your SID emulator has the option to display the STIL information for the current playing SID tune. [9] Why doesn't HVSC support MSDOS's 8.3 filename convention? ------------------------------------------------------------- We have racked our brains trying to figure out an easy solution to support short filename OSes. Every solution we came up with required much work from our end. Since the maintainers of HVSC organise the collection as a hobby, we cannot spend a great amount of time catering to such a small audience. We have concluded that support for short filename based OSes will have to come from a devoted user of such an OSes. Keep in mind that the long filenames do not prevent 8.3 OSes from playing the music files. Only the Update tool won't work and the filenames will likely be cluttered with those nasty tildes (~). [10] When will the next update be released? ------------------------------------------ There is no fixed time schedule as to when each update is released. Each update is dependent on two factors: available time and available SIDs. Once enough SIDs have been sent in to equal around 1.44 MBs (compressed) and the HVSC crew has time enough to properly sort the SIDs, the next update will be released. At present, it takes on average three months to put together a new update. However, you should note that with the amount of SIDs already present in HVSC, it does become harder to compile updates full of new SIDs and three months should be seen as an absolute minimum. Also, if you wish to be added to the HVSC Update Announcement list, which means you get an email the moment the HVSC website is updated announcing the new HVSC Update release, then please email HVSC Update Subscribe <hvscupdate-subscribe@scenelists.com>. Note too that you will be able to download the update from two sites on the main HVSC page which should ease Net traffic on the day of the update release. [11] Do I have to download all of HVSC after each update? --------------------------------------------------------- No. The update comes with a tool that automatically updates HVSC to the next version. Instructions are provided in each update and within the tool. In particular, do NOT run the update tool more than once. [12] Why isn't the update tool available for my system? ------------------------------------------------------- The update tool was made in mind to be portable, and at the moment is available for Win95/98/NT, AmigaOS, OS/2, MacOS, BeOS, Linux, FreeBSD, SolarisOS 2.6 on SPARC processor systems and Atari ST with external OS that handles long file names. If you would like to port the Update tool to your OS, the source code to the tool and information about the format of the HVS data file can be obtained by emailing Warren Pilkington <hvscadmin@wazzaw.freeuk.com>. [13] Why do the updates sometimes add SIDs that HVSC already had? ----------------------------------------------------------------- We often replace SIDs in HVSC with better versions. Reason for replacing SIDs could be (1) more sub-tunes (2) 100% rip (3) significantly smaller (4) merger of several SIDs. A "100% rip" would include fixed tunes, Real SID Play compatible tunes, Full Bank Switching tunes, etc. Thus, there is a chance that a new version of a tune could sound identical to the current version in HVSC. The new rip, however, has some internal changes that does in fact make it superior. Note that occasionally we do mistakenly add repeated tunes (and please tell us if you spot them.) [14] After I ran the Update, I can no longer find some SIDs. Where did they go? ------------------------------------------------------------ To find out more details as to where SIDs were moved, why they were deleted, why they were replaced, etc., view the /DOCUMENTS/UpdateXX.hvs file for the current update. The "XX" in the path mentioned in the previous sentence represents the current update number. So if after running Update #7 you can no longer find a favorite SID, check /DOCUMENTS/Update07.hvs and search the file for the location where that SID was manipulated. The UpdateXX.hvs file serves as a data file for the UPDATE tool but is also readable by humanoids and does contain some comments. The best way to find the section of the file that contains the information you seek is to do a string search on the old SID or the path where the SID resided. [15] How can I tell what version of HVSC I have? ------------------------------------------------ Look at /DOCUMENTS/hv_sids.txt. The first few lines will tell you what version you have. [16] Why should I get HVSC when I can just load up the game/demo and hear the music on a real C64? ------------------------------------------------------------------------- You likely fall in the category "I don't need no stinkin' emulator!" First off, remember that HVSC isn't just for emulator users. In fact, the tunes in HVSC are still in raw C64 code only prepended by some header information. To handle this, a tool on the C64 called "Real SID Play" (RSP) is available to play HVSC tunes on the C64. It plays approximately 80% of the tunes in HVSC. Of the tunes that do not play in RSP, they could be bad rips, tunes that have overlapping memory with RSP, or tunes that have samples. Tunes with samples require some non-C64-compatible modifications in order to be playable in some SID emulators. Another reason C64 users may enjoy HVSC is that it is the largest SID collection on Earth. It is unlikely that you have all of the programs from where the SIDs in HVSC originated. Plus, with HVSC, you can select any level tune at any time. As a final note, it is true that the SID emulators do not sound as splendid as a real SID. To quote Zardax, "With SID emulators, the soul of the SID is lost." Of course Zardax has only heard PlaySID which does not emulate SID filters. Nevertheless, his statement is partially true. SID emulators, however, are getting better all the time. And for people who no longer own a C64, SID emulators are a _dream_. Imagine how many C64 disks you would need to store the whole HVSC on. [17] Why do some tunes sound different compared to how I remember them on the C64? ------------------------------------------------------------------------- SID emulators are very good, but not perfect. Although SID emulation is not perfect, the actual rip of the SID tune may be corrupt. In addition to rippers corrupting tunes, crackers would often make mistakes and muck up the tunes' speed (most infamously, Skate or Die and Driller.) Another common problem is that some people may not be aware of is that the North America (NTSC) and Europe (PAL) had differences in their TVs that influence the speed of SID tunes that used raster timing. Thus, when playing NTSC music on a PAL system (and vice versa), the music may sound slower (or faster) than how the composer intended it. Check your SID emulator to see if it has the option to 'force' a tune to play at PAL or NTSC speed (thus giving you the speed you remember, albeit may be not the 'correct' speed). More information about this subject can also be found at the SIDPlay homepage: http://www.geocities.com/SiliconValley/Lakes/5147/ We've also seen several cases where people assumed that the tune was playing incorrectly based on their memories alone. Since it may have been 5-15 years since you last touched a C64, it is only natural that your memory may be a bit sketchy. On the other hand, some memories can also be very accurate despite the time that has passed. If you believe you have found a corrupt tune, it would be best if you load up the old tune on a C64/128 and compare it to the HVSC version. If you then notice a problem with the HVSC version, by all means, let us know. We strongly recommend that you do not compare the HVSC tune to a tune played in a C64 emulator. Most C64 emulators which emulate the SID are nowhere as good as the pure SID emulators. You might also want to check out the STIL which documents any known problems with the SIDs found in HVSC if the game or demo also played the SID tune the same way. [18] How do I rip SID tunes from games/demos? --------------------------------------------- http://www.geocities.com/SiliconValley/Lakes/5147/sidplay/docs.html#ripping Also, SIDPlay comes with technical information about converting SIDs to PSID format. The conversion process is surprisingly easy. One other important thing to bear in mind - if at all possible, rip from the _original_ release of the game. The initial wave of game cracks back in the late 1980s often missed out tunes, mucked up tunes etc and are never treated as a 100% reliable source for the correct game tunes, just to be on the safe side. Also, you will find that the release date given in a crack can be inaccurate, along with the credits, as the cracker would often overwrite the correct credits with who cracked the game etc. [19] Why isn't tune X in HVSC? ------------------------------ Of course, not every SID ever made on the C64 is in HVSC. We feel that the majority of the most requested tunes are in HVSC. This does not mean we feel that almost _all_ C64 tunes are in HVSC. The HVSC crew is always busy ripping new SIDs and always receiving more SIDs. The best thing you can do if you would like to hear a certain tune in HVSC is to check out the SID Hunt web page which can be reached from the main HVSC web site. Also, the HVSC Ripped Tunes page (http://www.hvsc.c64.org/News/rippedtunes.html) is a good source to check if a tune has been ripped and due for a HVSC Update. You may also want to consider Vincent Voois' "Sidbace 32" available at http://members.tripod.com/sidbace32/ which helps you locate information in both HVSC and STIL that you require. [20] I can't find tune Y in HVSC which was used in an old intro/demo. Can you tell me where it is? --------------------------------------------------------------------- Unfortunately, many intro coders and programmers failed to properly give credit to the music they used in their work. HVSC, thankfully, is very accurate in the credits it gives. We have worked for years contacting the original composers of tunes to help verify SID credits in HVSC. I don't think you are going to like what I am leading up to. C64 musicians have long been ignored on the C64. Many people will say, "Do you have the music to Commando?" not knowing who made the music. The time has come that you too should learn these composers' names. Basically, what I am telling you is that there is a chance that you will have to roll up your sleeves and dig through HVSC searching for your old favorite tunes. Before you do this, though, you should check out the HVSC search engine at the HVSC web site. With just a fragment of information, you can perhaps find the tune. Also, note that the professional composers (i.e., ones who received money for their work) are at the root of HVSC. Some of the lesser known composers and composers from post-1992 are in the "VARIOUS" directory. Knowing this information should help reduce your search time. [21] Why do some of the tunes in HVSC not play? ----------------------------------------------- More than likely, a silent tune is a PSID-only tune or the tune doesn't bank-switch properly. Assuming you are using SIDPlay, you can change the settings and play the tune in PSID environment as well as Transparent ROM mode. Our goal is to replace all these tunes with versions that will work in Full Bank-Switching mode. Further, some tunes use ADSR values which the original Sidplay's libsidplay library does not like. You may find that if your SID emulator can use reSID emulation, then give the SID a try with that as well. If you look in Update #18 onward, comments are made when SIDs are added that _only_ work fully with reSID emulation. Also, as from Update #19, we have created the file PSIDIL.txt (PlaySID Incompatibility List) which resides in the /DOCUMENTS dir of HVSC. This is a pretty definitive guide to all HVSC files which will give PlaySID (Amiga) problems. Some of those are sadly down to the emulator itself. [22] Why are there some incorrect or ugly-looking credits in HVSC? ------------------------------------------------------------------ Slowly but surely we are taking care of this. With each update, we make at least 200 credit fixes. So please be patient and if you notice any incorrect credits, email us and we'll try to fix them for the next update. Note also that any documented proof you have of the credit fix will help. [23] Why does HVSC take up so much space on my hard drive? ---------------------------------------------------------- This is the infamous cluster problem predominately found on Microsoft OSs. Basically, due to a lack of foresight on Microsoft's end, the cluster size for hard drives grows larger as the hard drives grow larger. Common cluster sizes are 16 & 32 KBs (usually used in FAT16). Perhaps now you see the problem? Many SIDs are around 4 KBs which is 4-8 times less than the most common cluster sizes. This problem affects many people besides HVSC users. The good news is that Microsoft is using FAT32, their file system for Windows 98/Me, which does fix this. It also has a conversion tool if your drive has the old FAT16 file system to convert easily to FAT32. Further, Win95 OSR2 also includes Microsoft's FAT32 file system if it has been installed by your system vendor, and if not, there is also a FAT32 drive converter program (not that they tell you about it) which you may be able to find on the Internet. (note: at your own choice/risk). If the size of HVSC is a problem for you, there are some space-saving ways to store HVSC. One method is to keep the collection zipped. If your uncompressing tool has the capability, you can double click the SID of your choice while in the uncompressing tool and the SID will play. This assumes that you have associated ".sid" files with a SID emulator. If you decide to keep HVSC zipped, you may want to create one large zip file instead of having many. Another popular technique is to use DriveSpace, which is an included tool with Win95. DriveSpace allows you to compress partial or entire hard drives, but treats the compressed drive like a normal drive. Using DriveSpace should reduce the amount of space consumed by HVSC by at least half. Further, we have noticed no slow down when playing SIDs that reside on a compressed drive. Consult the on-line DriveSpace help for more information. MacOS users who use the old HFS filing system (similar to FAT16) are encouraged either to upgrade to HFS+ (similar to FAT32) or to create an image file with the whole HVSC on it to save drive space. [24] Can I just download the individual tunes I want? ----------------------------------------------------- Yes. HVSC is available unzipped at a few web and ftp sites. A listing of these sites can be found at the HVSC web page. [25] How is it determined which composers go under the /VARIOUS dir? -------------------------------------------------------------------- The current rule is: (1) If the artist has no tunes made in 1992 or earlier, go to step #4 (2) If the artist has game tunes (3 must be made in 1992 or earlier), above Various... else go to step #3 (3) If the artist was a famous demo composer in 1992 or earlier, above Various...else go to step #4 (4) Below Various Note: Rule (2) above has slightly changed. This is in order that an artist who may have produced only one game tune for a magazine covermount prior to 1992 does not make it above VARIOUS. Also, as of HVSC 3.1, the /VARIOUS directory changed structure. In order to make it manageable chunks, /VARIOUS now has four subdirs, A-F, G-L, M-R and S-Z, so you can look in those to find the composers you seek. [26] Do you offer HVSC on CD? ----------------------------- Yes we do :) Please contact the below for further HVSC on CD information: ----------------------------------------------------------------------- Jason MacKenzie Binary Zone PD 34 Portland Road Droitwich Worcestershire WR9 7QW ENGLAND Website: http://www.bzpd.freeserve.co.uk/ Email: kenz@bzpd.freeserve.co.uk ----------------------------------------------------------------------- Imre Olajos Jr. 1651 W Byron Avenue Addison IL 60101 USA Website: http://lala.c64.org Email: LaLa@c64.org ----------------------------------------------------------------------- Bionic Grasshopper Email: bg_mfc@usa.net ----------------------------------------------------------------------- Stefan Scheffels Zum Werferstein 44 51570 Windeck GERMANY Email: sokratekk@rocketmail.com Website: http://de.geocities.com/sokratekk.rm ----------------------------------------------------------------------- In addition, the HVSC Crew have ensured that any programs distributed on a HVSC CD have had written permission from the programmers concerned to include their work, such as Sidplay, PlaySID, APlayer etc. If you are a public domain library and wish to include HVSC on a CD-ROM then please email Warren Pilkington <hvscadmin@wazzaw.freeuk.com> for permission - that's all we ask. As long as you are making no profit on the CD, we will be more than willing to support you. One final thing. You may also see C64 compilation CDs (such as the C64 Classix CD) which contain to have "over 10,000 SID tunes". They have copied HVSC onto those CDs without permission and are making profit from it, which is not only against the HVSC ethic, but also means that the composers' works are being abused. [27] Is the High Voltage SID Collection related to the High Voltage CDs? ------------------------------------------------------------------------ No. They are two separate collections. HVSC specializes in SID music where as HV CDs specialize in C64 games, demos, and music all in emulator format. Due to an early agreement between HVSC and HV CDs, HVSC uses the same name as HV CDs. HV CD #1 contains a partial NemeSIDs collection where HV CD #2 contains HVSC 1.1. HVSC has changed much since the HV CDs were put together. Therefore, we strongly recommend that you get the newest version HVSC from our web site or from an authorised CD vendor (see above). [28] Did you know that my virus checker reports some SIDs as having viruses? ---------------------------------------------------------------------------- Let me guess. You are using Norton Anti-Virus (NAV)? Apparently Norton Anti-Virus's method for searching for viruses seems to be somewhat abnormal or inefficient compared to other virus checkers. However, Norton supposedly fixed this from a Spring 1998 update, so if you haven't already, _update your copy_. Infected data files, however, can be an indication that your system does have a virus lurking somewhere. HVSC uses anti-virus scanners on each update and the collection before release. [29] When will HVSC be completed? --------------------------------- In all likelihood, never. Far too many tunes were made on the C64 to reasonably expect that every SID will be collected. In addition, people are still composing music on the C64 to this day (some of the HVSC team themselves are among them). Consider HVSC a living collection. [30] I find myself listening to SID music all the time. Am I normal? --------------------------------------------------------------------- No, you are a SID-aholic. But we consider this a good thing. ;) [31] So how do I make my own SID tunes? --------------------------------------- In most cases, you will need access to either a real C64 or a C64 emulator such as CCS64 or VICE. Ideally it is preferred that you actually compose on the real thing, as you know the emulation is going to be 100% :-). You will also need a music editor program, which will enable you to easily alter the sequences with the notes in, the voices that the C64 will use, and also which will let you compile your tunes to disk so that they can be loaded and run by other users. ftp://ftp.funet.fi/pub/cbm/c64/audio/editors/ is a good place to start to download a Commodore 64 music editor. I would advise you to try out a few and see which one you prefer. Over the years many people have recommended JCH's Editor, Music Assembler, DMC Editor, Future Composer, Voicetracker, Siduzzit, Soundmonitor and many others, but do take the time to read all the documentation with them. They will help you a lot in creating the right sound for your tune. Those of you who are used to tracker programs like Fast Tracker on the PC might like to check out CyberTracker - see http://noname.c64.org/tracker/ - it's a FT-like environment for making C64 tunes. And now there's a native PC application which will do the job very nicely for you. Lasse ╓÷rni's GoatTracker uses the well known reSID emulation engine in conjunction with a friendly and simple to use interface so that within minutes you can be mastering the SID chip and producing your tunes. And for HardSID card owners, you can also use the real C64 SID chip on your HardSID to ensure your sound is as close to the real thing as possible. The beauty also is that you can save your tunes (when finished) to C64 .prg format, or SID format too. For more information, please consult the following webpage: http://www.student.oulu.fi/~loorni/ And of course, once you have a saved compiled tune, it should be pretty easy to convert to a SID file to send off to the HVSC Crew (hint). [32] What if I want to release a cover of a SID tune commercially? ------------------------------------------------------------------ You should importantly please bear in mind that often the C64 composer will own authorship rights to their SID tunes, and not the software company. This is particularly the case as often known game composers worked freelance and so kept the ownership to their pieces. You should endeavour to contact the original C64 composer to ensure not just permission but also that the composer gets due authorship credit (and payment of course) on the record. Feel free also to contact Warren Pilkington <hvscadmin@wazzaw.freeuk.com> with regard to this if you are unsure how to proceed. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Do you have more questions? Have you also checked: (1) The documentation for the SID emulator/player you are using (2) /DOCUMENTS/hv_sids.txt (describes HVSC in more detail) (3) /DOCUMENTS/STIL.txt & /DOCUMENTS/STIL.faq (discusses some tunes in HVSC) (4) readme.1st (information about updating; comes with each update) (5) BUGlist.txt and PSIDIL.txt (information about bugs in SIDs or with PlaySID, comes with every update from Update #19 onward) If you have checked those documents and have not found the answers you seek, by all means, please email Warren Pilkington <hvscadmin@wazzaw.freeuk.com> at any time. Note that if you think your problem is related to the emulator/player you are using, we suggest you email the party responsible.