pc@unisoft.UUCP (Paul Campbell) (01/11/85)
(gobble...) Does anyone out there have any info on the mac internals (hardware) I have read the DDJ fat-mac upgrade article and intend to do just that as soon as I can afford it. But it would be nice to be able to run those programs that will depend on having 512k heap as well as having a RAM-disk. I intend to also put in another 512k for use as a RAM-disk (at $250-300 its cheaper than another floppy and far far far faster...). What I want to know is the following - How does the mac drive its ram chips, in particular what to the SEL A and SEL B lines do. - Where in memory is free, it seems that there must be a lot of double mapping going on. - Can the power supply handle the extra load (it should be able to after all it powers the second floppy) - Will I need a extractor fan, things get pretty hot alread, esp near the analog board... Also wouldn't it be nice to have a CMOS/bubble memory 'disk' inside the Mac with battery backup ... Thanks in advance Paul Campbell ZL4TFW(ex) ..!dual!unisoft!pc