Path: utzoo!attcan!uunet!super!mjt From: mjt@super.ORG (Michael J. Tighe) Newsgroups: comp.sys.misc Subject: Re: TRS-80 Questions Message-ID: <12843@super.ORG> Date: 12 Aug 89 16:32:00 GMT References: <8908102238.AA12720@lognet2.af.mil> <5650@ficc.uu.net> Sender: news@super.ORG Reply-To: mjt@super.UUCP (Michael J. Tighe) Distribution: na Organization: Supercomputing Research Center, Lanham, Md. Lines: 20 In article <5650@ficc.uu.net> peter@ficc.uu.net (Peter da Silva) writes: > The model II was a business computer, and did quite well. It ran TRS- > DOS and CP/M. It was the basis for the model 16 (the first 68000-based > TRS-80, basically a model II with a coprocessor card). The Model II used the Z-80 chip. The Model 16 used the 68000, and had a Z-80 for I/O. > The model IV was a repackaged model III, in the new cream box instead > of the ugly silver. Both the Model III and Model IV used the Z-80 chip. the III ran at 2 Mhz, while the IV ran at 4Mhz. The III had a 64x16 screen, with a maximum of 48K RAM. The IV had a 80x24 screen, and could handle 128K RAM using bank switching. -- ------------- Michael Tighe internet: mjt@super.org uunet: ...!uunet!super!mjt