mkarcher wrote on 2023-10-25, 20:16:

mcguli wrote on 2023-10-24, 12:09:

I view upper that EXP4045_J1.zip fix 2GB limit but, I will need to buy virgin eprom and a recorder for it, what model of eprom and recorder should I buy for the bios of this board?

Thank you.

This board uses a 28-pin DIP 64KB EPROM. Those chips are generally named 27C512 with differing vendor prefixes. There is a pin-compatible electrically erasable (flash-like) EEPROM by Winbond called the W27EE512 (earlier revision) or W27C512 (later revision) (the model number looks exactly like the Am27C512 by AMD, but the Winbond chip does not require UV erasure!), which I would recommend over UV-erasable EPROMs for hobby use. A generally recommendable programmer for these kind of chips, both the UV-erasable EPROM as well as the EEPROMs and flash chips is the TL866, but that one is not cheap.

Thanks, I buy a Willem and Winbond 27C512, I try this.