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There is a possibility to get more RAM, but in Basic there is still only 32Kb. This is because the Z80 CPU can only handle 64Kb divided in the following way 28Kb EPROM/ROM (Basic and Graphics) and 32 Kb RAM in NewBrain, or as CDesp writes, connect an Expansion.
It can also be done with another RAM card and then it is a machine that is called a poor man’s CP/M, it consists of a converted RAM card with 128Kb RAM and an Add card that must be put on the Main board in place of IC 406 and the EPROM/ROM from 406 must be moved to IC 407 and EPROM/ROM IC 408 must be replaced with a 16Kb EPROM/ROM possibly 27128.
But this conversion means that an expansion box cannot be added to the machine, only a disk controller.
There was a program for the converted machine that when run gives 8Kb more so that the total RAM came up to 40Kb free RAM in Basic.
Unfortunately, I haven’t been able to find that program.
Kind regards
Klaus
