"DELTA Sound" Project.

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XavSnap
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"DELTA Sound" Project.

Post by XavSnap »

Hi,

This project is based on the electronic assembly published in "Electronique pratique" #166 around the UM5100 circuit.
The schematic is practically the same as the one given in the datasheet, but the interfacing to the ZX81 gives it interesting possibilities.
um5100.JPG
- 16 x 8K memory blocks (128kb RAM) Save by ROM poking ($0000-$2000), and retrieved using an IORQ (IN $7F).
- RECORD & PLAY available on a OUT $7F.
- Recorded sound (8 secounds blocks) can be stored in a file in raw or compressed format.

Original wiring diagram:
http://zx81.ordi5.free.fr/brico/deltasound

My wiring diagram:
DeltaSound_project.pdf
(776.23 KiB) Downloaded 69 times
Last edited by XavSnap on Sun Oct 20, 2024 10:12 pm, edited 1 time in total.
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
User avatar
XavSnap
Posts: 2072
Joined: Sat May 10, 2008 4:23 pm
Location: 'Zx81 France' Fb group.
Contact:

Re: "DELTA Sound" Project.

Post by XavSnap »

Hi,
This project can easily run on a ZX Spectrum but add to be update on the edge connector (A8 to A12 pins).

Changes:
-EO memory cleaned and UM5100 A14 desactivated.
-Minors changed.
DeltaSound_project.pdf
(793.9 KiB) Downloaded 132 times
This wiring diagram is in progress...
I had to check all components values.
Last edited by XavSnap on Sun Oct 20, 2024 10:12 pm, edited 1 time in total.
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
User avatar
XavSnap
Posts: 2072
Joined: Sat May 10, 2008 4:23 pm
Location: 'Zx81 France' Fb group.
Contact:

Re: "DELTA Sound" Project.

Post by XavSnap »

HI,

The wiring diagram seem ok.
- The d4 (Reset counter) was not drived by the IORQ !
- The UM5100 memory latchs was wrong.
- TS1500/Spectrum PCB profil (You had to change the connector!)
- This PCB is a little high, which is why a horizontal version could be considered.
- This circuit is stand-alone,and can be test without the computer at first.

If any ideas, let me know.

This first project isn't tested, and come without warranty.

New wiring diagram:
DeltaSound_Diagram.pdf
(813.91 KiB) Downloaded 57 times
DeltaSound_1.jpg
DeltaSound_2.jpg
Delta_sound_PCB.JPG
Kicad project:
http://zx81.ordi5.free.fr/brico/deltasound/

Have Fun...
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
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