USB+ROM ISA expansion card ISA USB card based on the CH375B chip, adding mass storage device (flash disk) support to old computers, with an option ROM socket. Created: 2023/08/04 Last modified: 2023/08/04
486/5x86 voltage regulator interposer Interposer for running 3-volt CPUs such as Am5x86 or 486 DX4 in 5-volt only motherboards. Created: 2022/12/04 Last modified: 2022/12/04
Diagnostic ISA card (POST card) Diagnostic ISA POST card for debugging/repair of old motherboards. Built using mostly classic TTL logic. Displays hex data written to port 80h on a 2-digit 7-segment display. Created: 2022/08/17 Last modified: 2022/11/27