Searching \ for 'building a PIC emulator from 555s' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/microchip/devices.htm?key=pic
Search entire site for: 'building a PIC emulator from 555s'.

Truncated match.
PICList Thread
'building a PIC emulator from 555s'
1998\06\09@190536 by wft

face
flavicon
face
I would like any help I can get building a emulator for a PIC16C84.  I
can only use 555 timers.  Once I understand 555s completely, I will have
a base for building anything.
--
Gus Calabrese    Lola Montes      WFT Electronics
4337 Raleigh Street      Denver, CO 80212
303 964-9670......voicemail      spam_OUTwftTakeThisOuTspamfrii.com   http://www.frii.com/~wft

EMERGENCY:   791 High Street     Estes Park, CO  80517
if no success with .....wftKILLspamspam@spam@frii.com, try .... wftspamKILLspambigfoot.com   then
.....wftKILLspamspam.....eudoramail.com

1998\06\10@151723 by STEENKAMP [M.ING E&E]

flavicon
picon face
Hi,

> I would like any help I can get building a emulator for a PIC16C84.  I
> can only use 555 timers.  Once I understand 555s completely, I will have
> a base for building anything.

This is a joke...right??

1998\06\10@212046 by Bill Cornutt

flavicon
face
I have used a 555 as an inverter.  I have plans to
design a nor, nand and an exclusive or gate also using 555's.

I think a 555 could be used as dynamic memory
but haven't tried it yet.

Emulating a Pic16C84 with 555's is a much greeater step.

Good Luck,

Bi;; C.   EraseMEbillspam_OUTspamTakeThisOuTcornutt.com

----------
{Quote hidden}

1998\06\10@224043 by Eric Belanger

picon face
Just forget about it!

Even if you can do all the functions with a 555 ( Good Luck ! :) ) it
would take thousands of them...


>From spamBeGoneowner-piclistspamBeGonespammitvma.mit.edu Wed Jun 10 18:20:51 1998
>Received: from PEAR.EASE.LSOFT.COM (206.241.12.19) by VMS.DC.LSOFT.COM
(LSMTP for OpenVMS v1.1b) with SMTP id <TakeThisOuT13.FF19F020EraseMEspamspam_OUTVMS.DC.LSOFT.COM>;
Wed, 10 Jun 1998 21:19:51 -0500
>Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV release 1.8c)
with
>          NJE id 2484 for RemoveMEPICLISTspamTakeThisOuTMITVMA.MIT.EDU; Wed, 10 Jun 1998
21:20:46
>          -0400
>Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail
>          V1.2b/1.8b) with BSMTP id 1047; Wed, 10 Jun 1998 21:18:48
-0400
>Received: from mole.slip.net (207.171.193.16) by mitvma.mit.edu (IBM VM
SMTP
>          V2R3) with TCP; Wed, 10 Jun 98 21:18:47 EDT
>Received: from stk-usr1-25-89.dialup.slip.net ([207.171.230.89]
>          helo=PC_wcornutt.slip.net) by mole.slip.net with smtp (Exim
1.90 #1)
>          for PICLISTEraseMEspam.....MITVMA.MIT.EDU id 0yjw0V-0007Lf-00; Wed, 10 Jun
1998
>          18:18:24 -0700
>Priority: Normal
>X-MSMail-Priority: Normal
>X-Priority: 3
>MIME-Version: 1.0
>Content-Type: text/plain; charset="ISO-8859-1"; X-MAPIextension=".TXT"
>Content-Transfer-Encoding: quoted-printable
>Message-ID:
<EraseMEMAPI.Id.0016.00636f726e7574743030303830303038spamMAPI.to.RFC822>> >Date:         Wed, 10 Jun 1998 18:15:55 PDT
>Reply-To:     pic microcontroller discussion list
<
RemoveMEPICLISTEraseMEspamEraseMEMITVMA.MIT.EDU>
>Sender:       pic microcontroller discussion list
<RemoveMEPICLISTspam_OUTspamKILLspamMITVMA.MIT.EDU>
{Quote hidden}

hav=
>e
>> a base for building anything.
>> --
>> Gus Calabrese    Lola Montes      WFT Electronics
>> 4337 Raleigh Street      Denver, CO 80212
>> 303 964-9670......voicemail      wftSTOPspamspamspam_OUTfrii.com
http://www.frii.com/~wf=
>t
>>
>> EMERGENCY:   791 High Street     Estes Park, CO  80517
>> if no success with spamBeGonewftSTOPspamspamEraseMEfrii.com, try .... KILLspamwftspamBeGonespambigfoot.com   then
>> EraseMEwftspamEraseMEeudoramail.com
>>
>


______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com

1998\06\11@004222 by Kirk Wood

picon face
Whay would you want to build a PIC emulator from 555's? I am new and don't
see the point. Sure, some things are good learning experiances, but
re-inventing the whole process? What is the next project, building an IBM
compatible computer from 555s?

Kirk Wood
  @spam@what4.ns@spam@spamspam_OUTconcentric.net

1998\06\11@062548 by Andres j Ogayar

flavicon
face
Please! keep me informed of al the steps in accomplishing this 'great wall'
project!

   I would thank it you very much.

   Also, I promise spending long time studying your designs, especially
trying to emulate EEPROM memory wit 555's. If you get the point of removing
power and saving contents, for sure I will buy your design.

   Maybe you could come also with some simulation tools for your design (I
suggest you using a PIC to emulate). I could help in writing the software
Windows NT tools.

   Will your design be also programmed in circuit? Via a Serial, parallel
port or maybe any special device?

   Thanks for the good time,

   Andres.
-----Mensaje original-----
De: N STEENKAMP [M.ING E&E] <spamBeGoneSTEENKMPspamKILLspamFIRGA.SUN.AC.ZA>
Para: .....PICLISTspam_OUTspamMITVMA.MIT.EDU <TakeThisOuTPICLIST.....spamTakeThisOuTMITVMA.MIT.EDU>
Fecha: miircoles 10 de junio de 1998 21:18
Asunto: Re: building a PIC emulator from 555s


>Hi,
>
>> I would like any help I can get building a emulator for a PIC16C84.  I
>> can only use 555 timers.  Once I understand 555s completely, I will have
>> a base for building anything.
>
>This is a joke...right??

1998\06\11@063209 by Bill Cornutt

flavicon
face
Is it too early to start thinking about a news group for
the '555 Project'?

Bill C.  TakeThisOuTbillKILLspamspamspamcornutt.com

----------
{Quote hidden}

1998\06\11@094329 by Martin McCormick

flavicon
face
Bill Cornutt writes:
>Is it too early to start thinking about a news group for
>the '555 Project'?

       We need to find out first if this is just a one-shot project.
This could either take off and create quite a buzz or just be a brief
impulse.

       It is possible to emulate EROM such that the 555 remembers previous
activity.  Heavy loads on the output for a prolonged time or reverse polarity
on VCC create states which indicate that the 555 is an OTP device should
one tend to go this way.  I would go so far as to say that it makes value
judgments and remembers past abusive treatment.

       One can safely say that it's all a matter of timing and control
and we all wish the developer well and hope he has the capacity to discharge
his responsibility.  I think the resistance this idea is getting from some
coupled with the capacity of others is a constant in any new project and
only time will tell when things will return to normal.  Hang in there and
don't flip-flop.

Martin McCormick WB5AGZ  Stillwater, OK
OSU Center for Computing and Information Services Data Communications Group

1998\06\11@104110 by Mark Langezaal

flavicon
face
part 0 477 bytes
Hope this will end the discussion about this hilarious subject.

Mark Langezaal
----------
From:   N STEENKAMP [M.ING E&E]
Sent:   Wednesday, June 10, 1998 11:38 AM
To:     TakeThisOuTPICLISTspamspamMITVMA.MIT.EDU
Subject:        Re: building a PIC emulator from 555s

Hi,

> I would like any help I can get building a emulator for a PIC16C84.  I
> can only use 555 timers.  Once I understand 555s completely, I will have
> a base for building anything.

This is a joke...right??


1998\06\12@021207 by Dr. Imre Bartfai

flavicon
face
Hi all,
I'll suggest to use NE556 instead of NE555, bcus it contains 2 pieces
NE555 so the amount of chips required is halved. I think so you need about
10 cubic foot to place your design (instead of about 18).

Imre


On Thu, 11 Jun 1998, Bill Cornutt wrote:

{Quote hidden}

1998\06\12@022235 by William Chops Westfield

face picon face
   I'll suggest to use NE556 instead of NE555, bcus it contains 2 pieces
   NE555 so the amount of chips required is halved.

Well, once you can build a NOR or NAND gate, you can build anything as
far as logic goes.  (there'd still be trouble trying to do the EEPROM.)

   I think so you need about
   10 cubic foot to place your design (instead of about 18).

Nah.  Haven't you seen the recent Micrel (?) ads?  A 555 in a 5 (?) lead
SOT23-style package (or was it the even smaller one?)

:-)
BillW

1998\06\14@215539 by ape

flavicon
face
Dr. Imre Bartfai wrote:

> Hi all,
> I'll suggest to use NE556 instead of NE555, bcus it contains 2 pieces
> NE555 so the amount of chips required is halved. I think so you need about
> 10 cubic foot to place your design (instead of about 18).
>

Whatever happened to 558's.  4 timers on one IC.

More... (looser matching)
- Last day of these posts
- In 1998 , 1999 only
- Today
- New search...