18 Mar
2001
18 Mar
'01
5:08 a.m.
The DEC Rainbow could (officially) take 896K of RAM
(128K on the
motherboard and a memory expanison card with 3 banks of 256K chips). The
oriiginal Apricot could be pushed to 960K -- actually, there was 1Mbytes
worth of chips on the board but the last 64K was taken up with the
boot/BIOS ROM and the video memory.
The TRS-80 Model 2000 could be pushed to 896k but it wasn't
an official Tandy upgrade. Someone figured out how to rewire the
256k RAM expansion card to hold a full 640k. I don't believe anyone
ever did much with this other than use it as a RAM disk though.
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757