Echo #01 31 октября 1996

Железо

Music board - Azuru SounDrive v8.6 (QUADRO) - Music board Spectrum - technical specifications, programming boards, wiring diagram.

Group * SANALEX * (Minsk) has been developed, tested and now 
comes a very interesting musical board. We think that not be 
superfluous to write about it. 


       A Z U R E S O U N D D R I V E V 8. 6 (QUADRO)



    MUSIC FEES FOR SPECTRUM-compatible PC.



                       PURPOSE



   ASD V8.6 is designed to play melodies, musical fragments, 
various sound effects written for AZURE SOUND DRIVE V8.6 and 
below, as well as for such popular audio cards as a SOUND 
DRIVE, SOUND DRIVE b, LPT-COVOX, PROFI COVOX without any 
modification! Playback is with high quality! And also have the 
opportunity to play digital music napicannoy for AY8910/12 and 
fees AY-COVOX (MONO), AY-COVOX (STEREO), with minor software 
modifications (See below).



                  COMPARATIVE DATA


TITLE CARD NUMBER BIT QUALITY HARDWARE SOFTWARE

                                        CHANNEL PORTS / CHANNELS

AZURE SOUND STEREO + 8 Apr. 1914

   DRIVE V8.6

LPT-COVOX 6 MONO April 1

SOUND DRIVE Aug. 1 STEREO + April 4

SOUND DRIVE b 6 MONO April 1

PROFI-COVOX 7 STEREO April 2

AY-COVOX (MONO) MONO 6 1 / 2 4

AY-COVOX (STEREO) 7 STEREO 2 / 2 4

AY8910/12 4 STEREO 2 / 3 3

STEREO SOUND CARD 7 February 4


   As can be seen from the characteristics, AZURE SOUND DRIVE 
V8.6 surpasses all existing music board, working with digital 
sound. Added to this is that the other board for compatibility 
with each other not only require software modifications, and 
hardware! As for AY-COVOX - where he has little use and his 
awkward handling and work with the ports. 


   AZURE SOUND DRIVE V8.6 provides full octet
sound reproduction of digital music written for SPECTRUM, so
and for the IBM PC, AMIGA.



                     PROGRAMMING BOARD



   As stated above, AZURE SOUND DRIVE praktichecki compatible 
with all music. Boards, therefore, programming under this fee, 
you can also write music for others. This is achieved 
substituting the correct port is consistent with the board, 
which will play music. The following describes the ports that 
are used in AZURE SOUND DRIVE (hereafter simply 'ASD'):



                    PORT NUMBER CHANNEL


                    15.11 LEFT


                    31.27 RIGHT


                    79.75 LEFT


                    95,91,191,187 RIGHT


                    63,59,127,123 LEFT


                    251 MIDDLE


                    255 MIDDLE



               Ports / channels other digital boards:


    NAME OF BOARD LEFT RIGHT MEDIUM


     SOUND DRIVE 1 15.79 31.95 -


     SOUND DRIVE b 127 - -


     LPT-COVOX - - 251


     PROFI-COVOX 63 95 -


     AY-COVOX (MONO) - - 49,149


     AY-COVOX (STEREO) 49 149 49 149 -


     AY8910/12 49,149 49,149 49,149


     SOUND CARD 127191 -


   Programming channels is close The sending data to the ports 
of ASD. Example of infiltration data: 


        ...

        LD A, 

        OUT (n), A; n - one of the ports ASD

        ...


   WARNING! In adapting programs written for AY8910/12,
AY-COVOX (MONO), AY-COVOX (STEREO) REQUIRED EXERCISE CAUTION IN 
SUBSTITUTION ports, especially when specifying a partial 
address PORT! The reason is that younger BYTE PORT 49149 CAN

INDICATE ON switch pages, what else besides MAY CAUSE computer 
work incorrectly. 


      Proper port switching AY and memory pages:


                      (1) Port AY:

        ...

        LD BC, 65533

        LD A, <register AY>

        OUT (C), A

        LD BC, 49149; can LD B, 191 (if C does not change)

        LD A, 
LABEL OUT (C), A; and not OUT (253), A!

                             ...


                   (2) for memory pages:

        ...

        LD BC, 32765

        LD A, <value>

        OUT (C), A; and not OUT (253), A!

        ...


  In adapting to the ASD should be replaced in (1) line labeled
LABEL on the line:


               OUT (n), A; n - resp. Port ASD


  But this is just a special case. Some programs can be
vctretit and other combinations, which requires a different 
approach. 

  It should also be noted that in the adaptation of programs 
written for boards that have less 8bit, it is desirable to 
remove the sub mixing for better sound. This is mainly

As for the programs written for AY8910/12. This is done in case 
you want to use the 4 channels with full 8bit-nym quality (note 
the editors 'INSTRUMENT VXXX,' DIGITAL STUDIO VXXX ',' DMM ',' 
SAMPLER VXXX 'and others - in this case we should be full-load 
8bit-nye tools (they can not no conversions to overtake with 
the IBM PC and AMIGA)). 



                   WIRING ASD V8.6


  Connection is direct connection contacts on a card with the 
appropriate contacts ASD system connector computer or directly 
to the processor Z-80. 

. A0
. A1
.
. A3 AZURE
. A4 SOUND
. A5 DRIVE
. A6
. A7
. WR
. OUT IORQ
. 12V
. 5V IAHS.
. 0V Channels

   . . . . . . . . . . .

   D7 D6 D5 D4 D3 D2 D1 D0 R L


   If the connector on the system no signal 'OUT IORQ', and you 
do not know how to build, then you can safely instead 
icpolzovat signal IORQ. This may occur when working with drive, 
in the dynamics of cracking - it's control of disk space '- 
You'll soon learn these signals to determine everything that 
happens on your disk: when it is read, write any information, 
moving head disk drive, is there disk virus, and many others. 
pl. et al. If you are 'cracking' is not needed, you can put a 
toggle switch to 'on / off' ASD, thus it is necessary to 
disconnect immediately 5V and 12V! 


   About how, where, how and for how much you can buy ASD read 
in this issue of Echo in the 'Advertising'.