Re: Ultimax questions

From: Michał Pleban <*lists_at_michau.name*> Date: Sun, 20 Oct 2013 14:33:54 +0200 Message-ID: <5263CDB2.7090701@michau.name> · lists_at_michau.name

Hello!

Marko Mäkelä wrote:

> I do not see why not, you should be able to use part of it at least. The
> Max uses static RAMs. I guess you could decipher the maximum RAM map
> from the PLA equations somehow:

The dedicated /EXRAM line at the expansion port handles only 2 kB
unfortunately. Of course you could make your own memory mapping chip(s)
to handle more, as I explained to Steve.

> Are the I/O1 or I/O2 signals available on the Max cartridge port?

Actually they are not. /IO1 is replaced by /EXRAM and /IO2 is replace3d
by SP pin form the CIA.

Regards
Michau.

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