WEBER@USC-ECLC.ARPA (03/26/84)
From: Allan Weber <WEBER@USC-ECLC.ARPA> A friend is considering buying a Radio Shack TRS-80 Model 100 Portable Computer and asked me if a person can upgrade the 8k ram model to a 24k ram model for less money than paying the $200 difference in cost that Radio Shack is asking. Does anybody know if the additional 16k ram can be added by just stuffing in some off-the-shelf chips? Allan Weber Weber@USC-ECLC -------
BILLW@Sri-Kl.ARPA (03/27/84)
The model 100 uses rare and valuable 8K*8 CMOS static ram chips that have not made there way to the "hobbiest market" yet. You may be able to pick them up at a real electronics distributer for "only" about $40 each if you have connections or order large quantities. If you have good connections, you might try to get a couple of "free samples"... BillW
spoo@utcsrgv.UUCP (Suk Lee) (03/30/84)
You can't buy standard off the shelf kits, since the chips are special modules with four rams/chip. You can get identical chips for cheap from: Holmes Engineering 5175 Green Pine Drive Salt Lake City UT 84107 Cost is $75/8k ram. Ask for model IM-100. -- From the pooped paws of: Suk Lee ..!{decvax,linus,allegra,ihnp4}!utcsrgv!spoo
tim@nmtvax.UUCP (04/03/84)
/**********/ in response to some articles claiming that 8k*8 CMOS static rams are hard to find and expensive, no no no!!! I can think of at least five hobbiest mailorder sources that sell them for around $40-29. This includes Jameco and several other good, reliable places. And they really do have them. I know. I ordered two and got them in 7 days. Check the facts!!! Tim
bam@sdchema.UUCP (04/08/84)
The Trash-80 model 100 uses an upgrade card to add the additional memory, you could add the chips, but you would also see the PC card. Try the Convergent Technologies portable. Easier to upgrade and less expensive as well. Bret Marquis sdcsvax!bang!bam -- Bang World Communication Center - San Diego.