Thrashbarg
Experienced Member
Hi,
I've got plenty of old Commodore 64's and parts for them around here so I've built a SID synthesizer into a cheap toy piano.
It is made up of:
- 6510 MPU
- 6264 8k RAM
- 28C256 32k EEPROM
- 6526 CIA
- ADC0804 Analogue to Digital converter
- 6850 UART (to be added, MIDI support)
- lots of glue logic
- and of course a 6581 SID
So far it works nicely. though it's not finished. I can adjust the ADSR and filter controls with potentiometers, using an ADC to read and 4016's to multiplex them.
There's not much point in making a sound sample because I haven't programmed many features into it, and I'm awful at piano. When I get the MIDI interface hooked up I will.
Pictures:
http://kaput.homeunix.org/~thrashbarg/keyboard1.jpg
http://kaput.homeunix.org/~thrashbarg/keyboard2.jpg
Yes it's a very cheap toy piano.
I've got plenty of old Commodore 64's and parts for them around here so I've built a SID synthesizer into a cheap toy piano.
It is made up of:
- 6510 MPU
- 6264 8k RAM
- 28C256 32k EEPROM
- 6526 CIA
- ADC0804 Analogue to Digital converter
- 6850 UART (to be added, MIDI support)
- lots of glue logic
- and of course a 6581 SID
So far it works nicely. though it's not finished. I can adjust the ADSR and filter controls with potentiometers, using an ADC to read and 4016's to multiplex them.
There's not much point in making a sound sample because I haven't programmed many features into it, and I'm awful at piano. When I get the MIDI interface hooked up I will.
Pictures:
http://kaput.homeunix.org/~thrashbarg/keyboard1.jpg
http://kaput.homeunix.org/~thrashbarg/keyboard2.jpg
Yes it's a very cheap toy piano.