Sinclair ZX80 / ZX81 Forums

And you overbid me

It should be in the ZXmore manual. It was in the ZXblast manual.

If I remember correctly. You kan load any ROM into ZXmore. I know this from ZXblast, which I have. And ZXmore and ZXblast should be quite similar.

I have the fast ROM in instance 3, and regular ROM is instance 1.

Z88dk has built in support for graphics on the ZX81. But I don’t think pseudo hires is supported. I know WRX and UDG graphics is created with z88dk libraries.

A printer emulator as you describe Paul can be achieved with a Memotech Centronics interface and RWAP’s RetroPrinter. https://www.retroprinter.com/

But I assume a ESP32 directly on the ZX81 would make a cheaper interface than Memotech I/F + RetroPrinter + Raspberry Pi.

I have used this Arduino shied to “burn” my EEPROMS. http://web.archive.org/web/201711091044 ... prommer-en

I don’t know.

I just looked at the data sheet for both of them, and created my own adapter.

I've had success with AT28C64 EEPROMs that can be programmed with an Arduino. Then I made an adaptor board with stripboard.

(I use Amazon S3 for files that need linked to from other HTML, and Mega.NZ for large files.)

Thank you for your great work. It will be a pleasure to have this addition.