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'.
