ZX81 rom adpater for AT28C128/AT28C256-JU
author: CyberSwindy
2 layer board of 0.85 x 3.20 inches (21.6 x 81.3 mm)
Uploaded:
January 26th 2022
Shared:
June 29th 2022
Total Price:
$13.60
Adapter board for zx81 (issue 3), for AT28C128-JU/256-JU. This board is a through-hole solder version, enabling easy soldering, whilst making use of PLCC packaged eeproms. As the eeproms support more than the 8k, up to 4 ROM images can be burned, and selected by pin headers.
I designed this as I could only source PLCC packaged EEPROMS (due to the “chip” shortage), but could not find an adaper supporting these chips.
Adapter board for zx81 (issue 3), for AT28C128-JU/256-JU. This board is a through-hole solder version, enabling easy soldering, whilst making use of PLCC packaged eeproms. As the eeproms support more than the 8k, up to 4 ROM images can be burned, and selected by pin headers.
I designed this as I could only source PLCC packaged EEPROMS (due to the “chip” shortage), but could not find an adaper supporting these chips.