Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!apple!oliveb!tymix!antares!pnelson From: pnelson@antares.UUCP (Phil Nelson) Newsgroups: sci.electronics Subject: Re: Anybody know what this is?? Summary: the UART is TR1602, not 1402 Message-ID: <447@antares.UUCP> Date: 6 May 89 20:50:02 GMT References: <2444@lll-lcc.UUCP> <3340003@hpcvca.CV.HP.COM> <8497@siemens.siemens.com> <3128@ncar.ucar.edu> Reply-To: pnelson@antares.UUCP (Phil Nelson) Organization: Tymnet QSATS, San Jose CA Lines: 35 In article <3128@ncar.ucar.edu> cook@stout.UCAR.EDU (Forrest Cook) writes: >>In article <3340003@hpcvca.CV.HP.COM> mjr@hpcvca.CV.HP.COM (Mark Reed) writes: >>> The 1402 may be an RCA CMOS micro. (?) >>No, the RCA micro is 1802 (a.k.a. COSMAC). I don't know what a 1402 is, > >I think the 1402 is one of those old fashioned UART chips. >(Universal Asynchronous Receiver/Transmitter) They are (were) typically used >to implement RS-232 async serial to parallel conversion. > Probably you are thinking of the TR1602 UART, made by Western Digital. I did not see the original question (I haven't been able to keep up with the net), but I looked in an old IC Master, it lists a 1402A dynamic shift register (256 bits by 4 registers) made by AMD, Intel, Synertek. I have a data sheet in a 1978 Synertek catalog. (of course I don't have any idea if this is the answer, since I don't know what the question was :-)) By the way, are there any other 1802 hackers out there? The 1802 was my Idea of the perfect computer, I even built a couple. The power supply was 4 size 'D' NiCd batteries, with a trickle charger at home. I didn't have to go home too often though, It could go a week or two between charges. > > ^ ^ Forrest Cook - Beware of programmers who carry screwdrivers - LB >/|\ /|\ cook@stout.ucar.edu (The preceeding was all my OPINION) >/|\ /|\ {husc6|rutgers|ames|gatech}!ncar!stout!cook >/|\ /|\ {uunet|ucbvax|allegra|cbosgd}!nbires!ncar!stout!cook -- Phil Nelson at (but not speaking for) OnTyme:NSC.P/Nelson Tymnet, McDonnell Douglas Network Systems Company Voice:408-922-7508 UUCP:{pyramid|ames}oliveb!tymix!pnelson LRV:Component Station "ding ding..." -Santa Clara County Transit Company trolley car (AKA "LRV")