Short: V1.0, CBM compat. device for MAS Player Author: hodges@in.tum.de (Chris Hodges) Uploader: hodges@in.tum.de (Chris Hodges) Version: V1.0 (24-Jan-01) Type: mus/play Requires: Dirk Conrad's MAS Player (Pro-Version!) MASMPegDevice V1.0 ~~~~~~~~~~~~~~~~~~ Finally there is a commodore standard device for Dirk Conrad's MAS Player (mpeg layer 2 and 3 hardware decoding using the MAS3507D chip) which can be used in conjunction with AMPlifier (www.katodev.de, included with OS3.9) and other software that supports the mpeg device class (Frogger, MPEGMovie, etc.). The masmpeg.device is based on the framework of the melodympeg.device by Thorsten Hansen. This software is Freeware. Comments appreciated though. Requirements ~~~~~~~~~~~~ You will need the pro version of the MAS Player, the standard version is not supported. A 68020 CPU is mandatory, I have not tested if a 68020@14MHz will suffice, but probably not. Installation ~~~~~~~~~~~~ Just copy the masmpeg.device file into your DEVS: drawer. Give this device name for AMPlifier etc.. Currently, only use unit 0 (higher unit numbers will allow the use of other parallel ports, but there are still problems with the alien devices and their hardware abstraction). The MAS hardware must therefore be connected to the internal parallel port. Tech Bits ~~~~~~~~~ The device does not allocate a CIA timer for its interrupt. It does all its transfers during a soft interrupt. This means that you should be able to use your internal serial port in case you connected the power plug somewhere else. Moreover, all hardware resources are allocated in a system friendly way, so there should not be any interferences with other conform software trying to use the parallel port in any other way. Known Problems ~~~~~~~~~~~~~~ - There is no detection if the MAS player is connected or not. If you try to play something and the hardware is not connected, it will drain lots of cpu power (it will not crash though). - The volume control is currently not very linear nor logarithmic, this will be fixed in futher versions. - Sometimes (especially at high bitrates) the sound is interrupted for a short period. If there's demand, I could increase the timer interrupt frequency, but this will increase cpu usage a bit. Would be nice to get some feedback if this really is a problem. I haven't tested mp3s with bitrated above 160kbs yet. Future ~~~~~~ I've returned the MAS Player hardware back to its owner today, so I am currently not able to test any further stuff, sorry. This is the main reason why I'm releasing this software "as is". If anyone want to offer me a MAS Player for free, just go ahead :) (I won't buy one, for I've got a Melody soundcard with MAS3507D on it). History ~~~~~~~ V1.0 (24-Jan-01) - Initial public release Other recent software releases ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ FormAldiHyd V2.0beta - Driver for Aldi/Medion, AipTek and WacomIV tablets. Deli14BitGenie V4.30 - HQ mixing genie for DeliTracker with DSP etc. Contact address ~~~~~~~~~~~~~~~ Any mail, comments or donations welcome: Chris Hodges Account: 359 68 63 Kennedystr. 8 BLZ : 700 530 70 D-82178 Puchheim Bank : Sparkasse Fürstenfeldbruck Germany Tel.: +49-89/8005856 WWW: http://www.platon42.de/ Email: hodges@in.tum.de IRC: platon42 on EfNet ============================= Archive contents ============================= Original Packed Ratio Date Time Name -------- ------- ----- --------- -------- ------------- 1636 860 47.4% 28-Jan-01 19:37:14 MASMPegDevice.info 4848 2944 39.2% 28-Jan-01 19:38:10 +masmpeg.device 3467 1758 49.2% 28-Jan-01 19:37:56 +MASMPegDevice.readme -------- ------- ----- --------- -------- 9951 5562 44.1% 28-Jan-101 20:42:18 3 files