GrandRomMax

A russian clone of ZX Spectrum made in 1993 in Moscow. It is very simmilar to the Pentagon but INT is re-made to be "a la" original. There exists four or five models of it but there are only minor differences between them, for instance one has wrong released turbo Beta Disk interface so when you read/write disks on your own GRM everything is normal, but when you want to save something to this disk on any another machine then all information on disk will be destroyed. They are not easy to expand because of some PLM (small ones) chips inside which does not allow you take some signals you may need to attach modem, etc.

The GRM2+ board was used to create GrandBoard2+.