SOUNDRIVE / COVOX ports on original ZX Spectrum

[VELESOFT]

I see last version of SOUNDRIVE 1.6. But only some ports are usable on orig.ZX Spectrum 128 computers thanks to incomplete adressation of AY ports and 7FFD/1FFD ports.

With real ZX128 is usable only this ports:
- original SOUNDRIVE ports #0F,1F,4F,5F
- COVOX port #FB
- PROFI ports #3F,#5F
- port #7B ( I mean for this port not exist software support )

Czech D/A software (UR-4 ports) support this ports #1F(left channel A), #3F(right channel B), #5F(middle channel C). This three channels are mixed as ACB stereo (similar as AY channel mixing). Then channel C is mixed in left and right channels.

I plan add support of SOUNDRIVE and Czech ports to my new interface.
Exist software support for PROFI ports #3F,#5F and for port #7B ?
I plan for mono covox port #FB use both channels, because sound only in one channel is not so good...
For Czech ACB D/A stereo I will also send middle channel C to both channels.

[solegstar]

I see last version of SOUNDRIVE 1.6.

Can I see the schematic diagram of this device?


Exist software support for PROFI ports #3F,#5F and for port #7B ?



Profi ports supports in Sample Tracker 2.1 by OLDMAN (http://vtrdos.ru/system/SAMPLET.ZIP) as "stereo covox" option.

[VELESOFT]

Can I see the schematic diagram of this device?

Today I read some threads about SOUNDRIVE development in last years.
Schematic of version 1.6 is in attachment, but I don't know if it's exist as real device, or only this schematic. Also SounDrive_TLC7528 is nice :-)

I plan use CPLD based project with very small D/A convertors (2x 10 bit stereo chip) connected on SPI bus.

I read also latest table of ZX ports with all known D/A ports.
Now my idea is update my webpage and add all existing ZX software for D/A chips and all convert also to standart COVOX/SOUNDRIVE ports.



Profi ports supports in Sample Tracker 2.1 by OLDMAN (http://vtrdos.ru/system/SAMPLET.ZIP) as "stereo covox" option.

If exist only some pieces of software for PROFI stereo D/A then I can rewrite D/A ports in software and not support old PROFI ports.

[solegstar]

If exist only some pieces of software for PROFI stereo D/A then I can rewrite D/A ports in software and not support old PROFI ports.

In Extreme tracker 1.31-1.41, 2.10

[VELESOFT]

SAMPLE TRACKER is old Czech tracker, later modified for tr-dos and russian D/A ports. But I see some limits:

SOUND TRACKER support 3 sound channels, originally writed for Czech D/A with 3 channels and ACB stereo with ports #1F,3F and 5F.

This TRDOS version support three D/A modes:
1) COVOX 1 - single channel #FB (one channel)

2) COVOX 2 - PROFI stereo COVOX ports #3F and #5F

3) COVOX 4 - SOUNDRIVE 4 channels on ports #0F,#1F,#4F,#5F. Only in this mode is possible play all 3 channels with good quality. ACB are emulated via sending 3rd music channel to secondary left and right soundrive channels. :-)

In emulator REALSPECTRUM is impossible use LOAD operations in menu, show error (disc not exist...or similar...)