Article View: sci.electronics
Article #21346Re: Anybody know what this is??
From: Phil Nelson
Date: Sat, 06 May 1989 20:50
Date: Sat, 06 May 1989 20:50
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2345 bytes
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
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Path: arc1-ca.pugleaf.net!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