ZX80/ZX81

One of my customers (he wants to remain anonymous, because otherwise he would be flooded with questions) reported to me that he got this Wilco Clone up and running with the original ZX PROM without any problems.

Quote: "...your pcb arrived, working great, had a little difficulty (and fear) booting with my ROM from the original ZX80 but it worked. If the quartz is 6.5 ... MHz, the capacitor must be changed to 47pF, if anyone asks…"

Project:

https://wilco2009.blogspot.com/2017/07/project-double-clon-zx80zx81-reading.html
https://hackaday.com/2021/05/28/build-a-new-zx81/
https://forum.tlienhard.com/phpBB3/viewtopic.php?t=3139

Black empty pcb of Sinclair ZX81/80 Wilco clone with gold-plated contacts/soldering Points.

One of my customers (he wants to remain anonymous, because otherwise he would be flooded with questions) reported to me that he got this Wilco Clone up and running with the original ZX PROM without any problems.

Quote: "...your pcb arrived, working great, had a little difficulty (and fear) booting with my ROM from the original ZX80 but it worked. If the quartz is 6.5 ... MHz, the capacitor must be changed to 47pF, if anyone asks…"

Project:

https://wilco2009.blogspot.com/2017/07/project-double-clon-zx80zx81-reading.html
https://hackaday.com/2021/05/28/build-a-new-zx81/
https://forum.tlienhard.com/phpBB3/viewtopic.php?t=3139

Green empty pcb of Sinclair ZX81/80 Wilco clone with gold-plated contacts/soldering Points.

One of my customers (he wants to remain anonymous, because otherwise he would be flooded with questions) reported to me that he got this Wilco Clone up and running with the original ZX PROM without any problems.

Quote: "...your pcb arrived, working great, had a little difficulty (and fear) booting with my ROM from the original ZX80 but it worked. If the quartz is 6.5 ... MHz, the capacitor must be changed to 47pF, if anyone asks…"

Project:

https://wilco2009.blogspot.com/2017/07/project-double-clon-zx80zx81-reading.html
https://hackaday.com/2021/05/28/build-a-new-zx81/
https://forum.tlienhard.com/phpBB3/viewtopic.php?t=3139