🇬🇧 ZXMUX Tester Shield for Arduino Mega. Test ZX Spectrum ZX8401 PCF1306P
The ZXMUX chip (ZX8401 / PCF1306P / 40058) is a custom multiplexer chip designed for and used in the ZX Spectrum 128, +2, 48 Issue 5 and 6A. As this is a custom chip, modern chip testers like the TL866 is unable to test them.