On 4/12/18 1:05 PM, Michał Pleban wrote: > The widely known method of expanding a CBM-II memory requires soldering > several things on the motherboard, which is doable but not for the faint > of the heart. > > Alternatively you can also use the expansion port to connect a big SRAM > chip which could expand the memory for the 6509, but it would not be > seen by the 8088 card. In the mid-1980's, a member of the Chicago B128 Users Group (CBUG) produced a plug-in board called B1024. It provides 1 megabyte using 41256 DRAMs. I have a B1024 board put some information about it here: http://mikenaberezny.com/hardware/cbm-ii/b1024-ram-expansion-board/ Regards, Mike -- Mike Naberezny (mike@naberezny.com) http://6502.orgReceived on 2018-04-14 02:00:02
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