uCom preview: a RS232 adapter for the Z80-MBC2...

A project log for Z80-MBC2: 4ICs homemade Z80 computer

8MHz Z80, 128kB banked RAM, RTC, Disk on SD, Basic and Forth interpreters, CP/M 2.2 and 3, cross Assembler and C (SDCC) toolchains

Just4FunJust4Fun 04/05/2019 at 17:000 Comments

Currently working on a RS232 add-on card for the Z80-MBC2.

As the uTerm board, it has a power supply for the Z80-MBC2 and a "transparent" USB-TTL adapter connector, so you can upload firmware or load an Intel-Hex file (with iLoad) while the card is inserted. Both the "mixed" power supply scenarios (USB-TTL adapter not powered from USB but Z80-MBC2 powered and vice-versa) are managed.

Here connected to an Ampex 210 terminal (sold and relabeled by Kyber):

Stay tuned...