marcus@cbnewsc.ATT.COM (stephen.m.marcus) (07/20/89)
I have what was an original Mac 128, upgraded to 512KE. I have further upgraded to 1M by piggy-backing a layer of DRAMs on the mother board, plus adding a couple of TTL chips for address decoding. I'd like to add a further layer of DRAMs to extend memory to 1.5MB - the maximum that's physically possible given the physical space and the phut left in the power supply. Does anyone have details they can send me on the additional memory decoding necessary to do this? Please e-mail directly to me. I will summarize and post to the net. Thanks Stephen Marcus att!iexist!marcus marcus@iexist.att.com (312) 713 5256 / (312) 355 5311 (home)