Journal Journal: TRS-80 memory 3
Happened to notice this post, but it was too old to reply:
by eddy the lip (20794) Alter Relationship on Mon Aug 15, '05 03:28 PM (#13326226)
(sorry, been away from slashdot for a few days, or I would have replied sooner).
You got me on that one - I never did this myself. A friend way back in the day claimed to have jacked his TRS-80 up to 1MB. Now, this was many years ago, when people actually used the TRS-80 for other than geek nostalgia value, so I may be misremembering (or have been outright duped. I was young. It could happen....) He bragged to me about it 'cause I was stuck with the standard 32KB.
A bit of googling didn't turn up anything that would substantiate the viability of the claim. And now I have an unresolved mystery from my youth to contend with. Thanks a lot
http://en.wikipedia.org/wiki/TRS-80
http://en.wikipedia.org/wiki/Zilog_Z80 (the processor in the TRS-80)
16 bit address registers + 8 bit data = 64k bytes memory max.
Hence your friend with the 1MB was lying.
Well, maybe he managed to solder on a MB chip, but the TRS-80 couldn't have used it.