Path: utzoo!attcan!uunet!dino!sharkey!mailrus!tut.cis.ohio-state.edu!rutgers!sun-barr!texsun!letni!merch!cpe!hal6000!trsvax!uhclem From: uhclem@trsvax.UUCP Newsgroups: comp.sys.tandy Subject: Re: Radio Shack personnel Message-ID: <193300149@trsvax> Date: 28 Jun 89 13:28:00 GMT References: <1129@ucf-cs.UCF.EDU> Lines: 19 Nf-ID: #R:ucf-cs.UCF.EDU:1129:trsvax:193300149:000:715 Nf-From: trsvax.UUCP!uhclem Jun 28 08:28:00 1989 <> Please look on page 35 of the RSC-20 Computer Catalog. You will find the Model 4D and under hardware upgrades you will find the Model 4/4D Hard Disk Controller, 26-1138. Of course any of the old Radio Shack 5, 12, 15, 35, or 70 meg drives in the external cabinet that is a primary (has a keyswitch) already has the controller built-in, and only requires a cable. The port on the bottom of the Model 4/4D/4P is the raw CPU bus. It is not designed specifically with hard disks in mind and therefore, you need the controller and its associated address decoding circuitry. "Thank you, Uh Clem." Frank Durda IV @ ...decvax!microsoft!trsvax!uhclem ...sys1!hal6000!trsvax!uhclem