Newsgroups: sci.electronics.repair,comp.robotics
From: Tom@takdsign.demon.co.uk (Tom)
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Subject: PIC FAQ
Date: Tue, 1 Nov 1994 00:17:45 +0000
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PIC-FAQ		Issue 2.01		

This article is a collection of information sources for the PIC  family of microcontrollers (and variants).

The following topics are addressed:

	    0  )  Index	<You're reading it>

	    1  )  ABOUT THIS FAQ
	    1.1)  Who put this FAQ together?
	    1.2)  How can I contribute to this FAQ?
	    1.3)  What newsgroups will this FAQ be posted to?
	    1.4)  Mailing lists of interest to PIC fanglers
	    1.5)  Other FAQs of possible interest
	    1.6)  Can I distribute this FAQ or post it somewhere else?

	    2  )  ABOUT THE PIC 
	    2.1)  The PIC microcontroller
	    2.2)  PIC variants
	    2.3)  Notes for programmers
	    2.4)  PIC contacts and representatives

	    3  )  PIC Utilities
	    3.1)  FTP sites for the PIC
	    3.2)  BBSs that support the PIC
	    3.3)  Programming languages (3rd Party)
	    3.4)  Programming hardware  (3rd Party)

	    4  )  PIC DOCUMENTATION
	    4.1)  Periodicals that cover the PIC
	    4.2)  Books on the PIC
	    4.3)  Miscellaneous documentation on the PIC

	    5  )  What's next.


=============================================================================

1)  ABOUT THIS FAQ

1.1)  Who put this FAQ together?

	The denizens of "E-world" 	i.e.  yourselves. 

1.2)  How can I contribute to this list?

    Please, if you have any suggestions corrections or additions,
    notify me by E-MAIL.  :  Tom@takdsign.demon.co.uk   Thank you.
	

1.3)  What newsgroups will this FAQ be posted to?

    This FAQ will be posted to the following newsgroups:
	sci.electronics.repair	
	comp.robotics	

    The schedule for posting will be once a month.


1.4)  Mailing lists of interest

	To subscribe to the PIC mailing list;
	Mail to:	listserv@mitva.mit.edu
	Header:		() leave blank, not used.
	Text:		SUBscribe PIC	to subscribe
		or	UNSUB PIC	to unsubscribe
		or	HELP		to get help

	The pic list address is: PIC@mitva.mit.edu


1.5)  Other FAQs of possible interest
	The 8051FAQ posted by Russ Hersch - sibit@datasrv.co.il

	Available in

	comp.sys.intel
	comp.realtime
	comp.robotics
	comp.lang.forth
	sci.electronics


1.6)  Can I post this FAQ to my local BBS?

    I am putting no restrictions on the use of this FAQ except - It 
must   be distributed in its entirety and no financial gain may be 
realized  from it.

=============================================================================

2)  ABOUT THE PIC

-----------------------------------------------------------------------------

2.1)  The PIC microcontroller

    The PIC series are eprom based 8-bit microcontrollers
	developed by Microchip Technology

-----------------------------------------------------------------------------

2.2)  PIC Variants

PIC processors are available in three families, which Microchip refers to as
the PIC16C5x, PIC16Cxx, and PIC17Cxx families.

PIC16C5x: 12 bit program word size, 33 instructions, 2 level stack,
          no interrupts

            Program    Data              Max.   Voltage   Typical   Digikey
            memory     memory     I/O    freq.  Range     Current   Price  
            (words)    (bytes)    pins   (MHz)  (Volts)   (mA)      (US $) 
----------  ---------  ---------  -----  -----  --------  -------   -------
PIC16C54     512       25         12     20     2.5-6.25    2        4.39
PIC16C54A    512       25         12     20     2.5-6.25    2        
PIC16CR54    512 ROM   25         12     20     2.0-6.25    1        
PIC16CR54A   512 ROM   25         12     20     2.0-6.25    1        
PIC16C55     512       24         20     20     2.5-6.25    2        5.44
PIC16C56    1024       25         12     20     2.5-6.25    2        5.03
PIC16C57    2048       72         20     20     2.5-6.25    2        6.24
PIC16CR57A  2048 ROM   72         20     20     2.0-6.25    1        
PIC16C58A   2048       73         12     20     2.5-6.25    1        


PIC16Cxx: 14 bit word size, 35 instructions, 8 level stack

            Program    Data              Max.   Voltage   Typical   Digikey
            memory     memory     I/O    freq.  Range     Current   Price  
            (words)    (bytes)    pins   (MHz)  (Volts)   (mA)	    (US $) 
----------  ---------  ---------  -----  -----  --------  -------   -------
PIC16C64    2048       128        33     20     2.0-6.0     3       11.05
PIC16C71    1024       36         13     16     3.0-6.0     2       14.38
PIC16C74    4096       192                                          
PIC16C84    1024 EE    36 + 64 EE 13     10     2.0-6.0     2       10.15


PIC17Cxx: 16 bit word size, 55 instructions, 16 level stack:

            Program    Data              Max.   Voltage   Typical   Digikey
            memory     memory     I/O    freq.  Range     Current   Price  
            (words)    (bytes)    pins   (MHz)  (Volts)   (mA)	    (US $) 
----------  ---------  ---------  -----  -----  --------  -------   -------
PIC17C42    2048       256        33     25     4.5-5.5     6       15,15
PIC17C44    8192       480        33     25                         


Notes:

1.  Program memory is EPROM unless otherwise noted.
2.  Data memory is number of usable bytes, not including special function
    registers.
3.  Digikey prices are quantity 10 prices for 4 MHz DIP packaged OTP parts
    with RC oscillator option (where applicable), except that the 16C84 uses
    EEPROM program memory, and the slowest speed 17C42 is rated at 16 MHz.
    Prices are from Digikey catalog number 943 for May/June 1994.
    Other distributors often have lower prices, but typically also have
    high minimum order requirements.  Digikey also usually has plenty of
    parts in stock.  Windowed EPROM parts cost substantially more.

-----------------------------------------------------------------------------




2.3)
Notes for programmers:

All PIC instructions are a single word.  The equivalent of the immediate
address mode of other processors is the literal mode, used by instructions
ending in "LW", such as MOVLW, ADDLW, SUBLW, ANDLW, IORLW, XORLW, and RETLW.
The byte of data used by these instructions is directly encoded in the
instruction itself.

All PIC instructions take a single instruction cycle (four oscillator cycles)
to execute, unless a conditional test is TRUE or the program counter is changed
as a result of an instruction, in this case the execution takes two instruction
cycles.  For example:

	movlw	37
	goto	next
next:	movwf	porta

The goto instruction takes two cycles (1 to get the value of label "next" and 1
to load that value into the program counter) This is useful as a two-cycle NOP,
and is often written as "goto .+1" to avoid the need for a label.

The W register is equivalent to the accumulator on other processors.  Almost
all data movement, arithmetic, and logic operations use W.

Instructions that operate on W and a register (i.e., instructions ending in
"WF", like ADDWF and MOVWF) allow the result to be placed in either W or the
register (but not both).  This is specified by a ",W" or ",F" after the
operand.  The default is ",F", which will place the result in the register.
This can cause a lot of confusion if you're not careful, so I recommend
always specifying the destination explicitly.  An example of a confusing
instruction:

	incf	foo,w	; w := foo+1  note that foo is unchanged!

If you want the result in both W and the register, you can use either:

	incf	foo,w
	mowwf	foo

or:

	incf	foo,f
	movf	foo,w

The stack is not accessible to the programmer in any way other than the
call and return instructions.  There is no way to push or pull data, or even
to examine the stack pointer.  On the 16C5x family the stack has only two
levels, so it is frequently necessary to write code in a different style than
would be used on a typical processor; you can only call subroutines from your
main code, or from a subroutine called from main, but no deeper. If you try
to make a 3rd CALL, the 2nd return address is over-written so that the return
from the 3rd CALL is OK but the return from the 2nd CALL ends up where the
1st CALL should return to.

The 16CXX parts which implement an 8 level stack do so in a circular fashion,
so that the 9th CALL over-writes the return address for the 1st CALL.

The 16C5x family doesn't have a normal return instruction; instead it has
RETLW, which stands for RETurn Literal Word.  RETLW loads an eight bit
constant into W (just as a MOVLW instruction would), then returns from the
subroutine.  This can be useful, but is agravating if you want to return a
computed value.  On the newer PIC families there is a normal RETURN
instruction.

With the exception of the 17Cxx family, there is no way for software to read
an arbitrary location of program memory.  In order to implement lookup tables,
it is necessary to combine the use of the ADDWF and RETLW instructions.  For
example, the following code implements a lookup table of the first four odd
prime numbers:

primes:	addwf	pcl
	retlw	3
	retlw	5
	retlw	7
	retlw	11

To use the table, load the appropriate index (in this case, 0 to 3) into W,
and "call primes".  The addwf instruction adds the contents of W to the PC,
which has already been incremented to point to the "retlw 3".  The table will
return with the value in W.  The total time taken is 6 instruction cycles, or
24 oscillator cycles.

Note that while on most processors the use of an out-of-range index will
result in the use of incorrect data, but the program execution will continue
normally, on the PIC a bad index value will cause the execution of arbitrary
instructions!

 i.e. the computed address must be in the top 1/2 of page.

Normally the index would range from 0 to the size of the table minus one,
but it is possible to use other ranges by putting the retlw instructions
somewhere other than immediately following the "addwf pcl".  It is also
possible to implement tables using a "subwf pcl", or perhaps other 
instructions with pcl as the destination.

The subtract instructions (SUBWF and SUBLW) work differently than most people
expect.  SUBWF subracts W *from* the contents of the register, and SUBLW
subtracts W *from* the literal.  (SUBLW is not available on the 16C5x family.)

If you want to subtract a literal from W, it is easiest to use the ADDLW
instruction with the two's complement of the literal.  For example:

	addlw	0feh	; w := w - 2

Some assemblers allow this to be written as:

	addlw	-2

There is no instruction to take the two's complement of W (like the NEG
instruction on Motorola processors), but because of the way the subract
instructions work you can use:

	sublw	0

On the 16C5x family, the CALL instruction can only address the first 256 words
of a bank of program memory.  It is common practice to use "call extenders",
which are simply GOTO instructions in the first 256 words with a target in
the last 256 words.

On the 16C57 and 16C58, if you plan to use indirect addressing (via the FSR
and IND registers), it is vitally important that your reset code clear FSR
before using any other RAM locations.  Otherwise you may start up in an
arbitrary bank, and as soon as you change FSR all your carefully set up
variables will effectively disappear.

-----------------------------------------------------------------------------
2.4)  PIC contacts and representatives	

I don't know where these are for sure.

	Advanced Trans Data				tel:(214) 980- 2960		
	Programmer	PGM16 & PGM 16x8 Gang Prog.	fax:(214) 980-2937	
	No further information is available at this time

	Micro Engineering Labs				tel:(719) 520-5323
	makes PIC-Proto boards

	Myriad Development				tel:(303) 692-3836
	CCS - C compiler
	tel: (414) 781-2794 extension 30

	Digi-Key					tel:1-800-344-4539
	Order electronic parts, carry 16C54,55,56,57,&71.

	ED Teck. Pubs					tel:407-454-9905
	Fred Eady					BBS:407-454-3198
	Writes articles for popular magazines.
	Has a PIC programmer kit for $70.
	BBS good source of information, very helpful.

	FAI						tel:1-800-303-5701
	Ask for Chris
	Electronics distributer, carry PIC's,

	Needham Electronics				tel:(916) 924-8037
	 I don't know if they make PIC stuff,		fax:(916) 972-9960
	but they make an EPROM programmer, the PB-10	bbs:(916) 972-8042

	Their emp-20 is great for Pics,Pals,Gala,EEproms etc but is ~$500
	It can be set to auto program on start up. It takes about 4 seconds
	for a bat file to reassemble the source with new EQU's from the
	command line, recompile and program a part.

	Protel						tel:1-800-544-4186
	Builder of EASYTRAX, which is free-ware and a bunch of new stuff.
	Call Ext 225 ask for Louise Markham.		bbs:1-408-243-0125


	Bell Industries					tel:1-800-525-6666
	Electronic Distributor, including PIC's
.........................................................................

Australia
	Microchip Technology			tel:61 03 890 0970

	Product information
	No further information is available at this time

.........................................................................

Canada
AP Circuits
	BBS 1-403-291-9342 (Canada)
	Can download EASYTRAX(V2.06), various utilities, GERBER file 
	proofers, etc. You can upload PCB files and they will make 
	boards and ship to you in about week. (about $100)

	Baradine Products Ltd			tel:604-988-9853
	Programmer	Micro-Burner	
	No further information is available at this time

.........................................................................
Europe
	Data I/O Corp.				tel:31(0)-6622866
	Programmer	Unisite with Site-48 module	
	No further information is available at this time

.........................................................................
France
	Arizona Microchip Technology SARL	tel:33 01 6930 9090
	2, Rue Du Buisson aux Fraises		fax:33 01 6930 9079
	F-91300 Massy, France
	Product information	

.........................................................................
Germany
	Arizona Microchip Technology GMBH	tel:49 089 609 6072
	Alte Landstrasse 12-14			fax:49 089 609 1997
	D-8012 Ottobrunn, Germany
	Product information	

	SMS					tel:49-7522-4460
	Programmer	Sprint Expert	
	No further information is available at this time

.........................................................................
Hong Kong
	Microchip Technology Inc.		tel:852 410 2716
	Unit No. 2520-2525			fax: 852 418 1600
	Tower 1, Metroplaza
	Hing Fong Road, Kwai Fong
	N.T., Hong Kong
	Product information

.........................................................................
Italy
	Microchip Technology			tel:39 039 689 9939
	Product information
	No further information is available at this time

.........................................................................
Japan
	Data I/O Corp.				tel:(03)  432- 6991
	Programmer	Unisite with Site-48 module	
	No further information is available at this time

	Microchip Technology International Inc.	tel:81 45/471-6166
	Shinyokohama Gotoh Bldg. 8F, 3-22-4	fax: 81 45/471-6122
	Shinyokohama, Kohoku-Ku, Yokohama-Shi
	Kanagawa 222 Japan
	Product information		

.........................................................................
Korea
	Microchip Technology			tel:82 2 518 8181
	Product information
	No further information is available at this time

.........................................................................
Singapore
	Microchip Technology			tel:65 222 4962
	Product information
	No further information is available at this time

.........................................................................
Taiwan
	HI-LO					tel:(02) 7640215
	Programmer	ALL-03	
	No further information is available at this time

	Microchip Technology			tel:886 2 760 2028
	Product information
	No further information is available at this time

.........................................................................
U.K.	
	Arizona Microchip Technology Ltd 	tel:44 062-885-1077
	Unit 3, Meadow Bank, Furlong Rd		fax: 44 062-885-0178
	Bourne End, Bucks SL8 5AJ
	Product information		

	Application Solutions Ltd		tel:273-476608
	Programmer	PIC Programmer
	No further information is available at this time

	Citadel Products Ltd.			tel:44-819-511-848
	Programmer	PC-82	
	No further information is available at this time

	Maple Technology Ltd			tel:44-666-825-146
	Programmer	MQP-200	
	No further information is available at this time

	Polar Electronics Ltd.,			Tel. 0525 377093
	Cherrycourt Way,			Fax  0525 853070
	Leighton Buzzard,
	Bedfordshire	LU7 8YY
	Microchips 'Official' UK Distributors
	Contact for details of the PIC Owners Club

	Eiger Technologies Ltd.,		Tel. 0928 579009
	14 Howard Court,			Fax  0928 579123
	Manor Park,
	Runcorn,
	Cheshire, WA7 1SJ
	Microchips 'Official' UK Distributors

	Hawke Components Ltd.,			Tel. 0256 880800
	26 Campbell Court,			Fax  0256 880325
	Bramley,
	Nr Basingstoke,
	Hants RG26 5EG
	Microchips 'Official' UK Distributors

	Stag Microsystems			tel:44-707-332-148
	Programmer	PP39	
	No further information is available at this time

.........................................................................
U.S.	
	ADVIN Systems Inc			tel:408-984-8600
	Programmer	PILOT U40	
	No further information is available at this time

	BP Microsystems				tel:800-225-2102
	Programmer	CP-1128			tel:713-461-4958
	No further information is available at this time

	Data I/O Corp.				tel:800-288-4965
	Programmer	Unisite with Site-48 module	
	No further information is available at this time

	Elan Digital Systems Ltd		tel:(408) 946-3864
	Programmer	EF-PER 5000 Series Gang Programmer	
	No further information is available at this time

	Link Computer Graphics			tel:301-994-6669
	Programmer	CLK-3100	
	No further information is available at this time

	Logical Devices Inc			tel:800-331-7766
	Programmer	ALLPRO 88		tel:305-974-0967
	No further information is available at this time

	Micro Engineering Labs			tel:719-520-5323
	Box 7532 Colorado Springs, CO 80933
	Has proto-type boards and demo kits,
	Good source of info, can do manufacturing, etc

	Microchip Technology Inc.		tel:(602) 786-7200
	2355 West Chandler Blvd.		fax: (602) 899-9210
	Chandler, AZ 85224-6199
	Product information		

	Parallax Inc.
	3805 Atherton Road, Ste. 102		fax: (916) 624-8003
	Rocklin, CA 95765 USA			bbs: (916) 624-7101
	Assembler / Simulator		    	Help 916-624-8333

	The assembler takes either the standard instructions
	or parallax's 8051-like pseudo instructions
	If you call the BBS you can order info by mail.


=============================================================================


3)  PIC Utilities	 


	PICSTART-16B-1

Features
	Supports only 16C5x,16C71 and 16C84,(INHX16, INHX8S, INHX8M, PICICE)
	compatible with a wide range of file formats
	comes with chips to play with.
	has a zif socket
	assembler has powerful macro capabilities
	also includes a powerful debugger


	PICSTART-16C

Features
	To be announced

-------------------------------------------------------------------------------

	PARALLAX
	--------
Features
	Parallax's own instruction set  Their assembler takes either the
	standard instructions or parallax's 8051-like pseudo instructions.
	needs only a 360k floppy, MSDOS 2.1, 128K RAM, mono.
	simulator software

-----------------------------------------------------------------------------

3.1)  FTP sites for the PIC

	FTP  SITE		Directory

	ftp.sics.se	/pub/mchipsoft/

The files here are publicly available from the Microchip BBS via
Compuserve. Since many people interested in these files have an
internet connection, the files have also graciously been made
available at SICS by Anders Nobinder of Memec Scandinavia, 
Microchip's
Swedish agent.

	ftp.funet.fi (nic.funet.fi)	 /pub/microprocs/PIC

	wpi.wpi.edu	/stamp

	ftp.luth.se           /pub/misc/microchip

	ftp.oak.oakland.edu

	ftp.uni-erlangen.de, 
	directory 
	[ /mounts/epix/public/pub/Multimedia/VideoCrypt
	/microcontroller/microchip.bbs ]

	Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de>

-----------------------------------------------------------------------------

3.2)  BBSs that support the PIC

	Microchip BBS
		Contact by dialing the same number you would use to get to
	Compuserve at 19200,n,8,1, except that you press +<CR> at the 
	(garbage)
	prompt, followed by MCHIPBBS as the host (instead of CIS).
 

	Don Lekei BBS
		 (Canada) (604) 597-3479

-----------------------------------------------------------------------------

3.3)  PIC programming languages (3rd Party)

Host m/c		PC

Prog. Name	ASPIC	Shareware PIC assembler  (reg = $100 CDN ($69 US))
		**DESIGNED** for embedded controller design
		the shareware license has an unusual clause absolving 
		those who only use it for non-commercial purposes

Supplier/Author	Don Lekei  < 72677.2623@compuserve.com >
		BBS at (Canada) (604) 597-3479 

Features	- One assembler for 16c5X, 16c6X, 16c7X, 16c8X, 17c42
		- Compatable with PICSIM (MPSIM)
		- Compatable with MAKE, and with auto-error tracking editors
		- Many times faster than PICALC (MPALC)
		- Standard base notation (Intel & Motorola format)
		- CODE and FUNCTION macros
		- Auto register bank management
		- Text/data translation
		- Automatically generates RETLW tables for text / data tables
		- Built-in version management and assembly control functions
		- user command-line switches
		- many other features
		-character set translation (eg. for LED,LCD,On Screen Displays)
		- bit labels, environment labels, etc.

-------------------------------------------------------------------------------

Host m/c	PC i386 /MSDOS/SunOS 4.1.1/NeXTSTEP 3.0.

Prog Name	B.LO.C release 1.0, version 4.0
		Available for the PIC16CXX and PIC17CXX
Supplier	Butterfly Signal Processing Inc.
		131 Bloor Street West #200-154
		Toronto, Ontario, Canada M5S 1R8
		Tel: (416) 929-5754 
		Fax: (416) 929-5744
Features	`C-like' syntax
		Locally optimal code generation
		Superfast, one-pass compilation
		Zero stack and memory space used
		Produces fully annotated, easy-to-read - 
		   - assembly code to facilitate simulation
		Regular and in-line functions supported
		B.LO.C and assembly routines can be mixed 
		In-line assembly code inclusion
		For more information contact 
		asm@kalam.butterfly.com

-------------------------------------------------------------------------------

Host m/c		Macintosh 

Prog. Name	uASM

Supplier 		Micro Dialects Inc,
	 	PO Box 190,
	 	Loveland, OH 45140,
	 	Ph: 513/271-9100.

Features:		An integrated text editor, assembler
		and communications modules. fully supports macros,
		automatic labels, local labels, conditionally assembly,
		includes to 10 level deep.
		The editor supports up to 10 open files at a time, full
		search and replace including grep searches,
		file size limited only by RAM available.  
		The emulator supports data transfer up to 38,400 baud.

NOTE:		The uASM code is incompatible with the MicroChip Simulator
		<unless you know better ? >


-------------------------------------------------------------------------------

Host m/c		PC ?

		C5x compiler C5x series
		C71 compiler

Supplier		CCS
		PO Box 11191
		Milwaukee, WI  53211
		phone # : 414-781-2794  ext.30
		(you leave your message on an answering machine)

Features		-libraries for RS232 serial I/O and precision delays
		-allow call trees deeper than the hardware stack


Byte Craft Limited supply a C compiler for the PICs. A demo version for
the 17C42 is available ( assembly file generation only ). I was quoted a
price of 695 pounds Sterling, 660 pounds for members of the PIC owners club.

Contact:	Byte Craft Ltd.,	Tel. (519) 888 6911
		421 King Street North,	Fax (519) 746 6751
		Waterloo,
		Ontario,
		Canada N2J 4E4
		
In UK		Pentica Systems Ltd.,	Tel. (44) 0734 792101
		Oaklands Park,		Fax  (44) 0734 774081
		Wokingham,
		Berkshire RG11 2FE
		England

-----------------------------------------------------------------------------

3.4)  PIC Programming Hardware (3rd Party)

Product		programmer
Model		Microburner 512
Supplier	Beradine Products Ltd,
		PO Box 86757,
		North Vancouver,
		BC CANADA V7L4L3,
		Ph: 604/988-9853.

Contact		Gary Anderson

Features	RS-232 terminal serial port compatible programmer
		Supports communications up to 38,400 baud,
		stand-alone or host operation,

SMART Communications supply emulators from 350 pounds Sterling and
programmers from 200 pounds Sterling. Contact:
		
		SMART Communications,
		2 Field End,
		Arkley,
		Barnet,
		Herts EN5 3EZ
		England
		Tel. +44 (0)81 441 3890
		Fax  +44 (0)81 441 1843

PIC16C84 Programmer using PC parallel port.
		Schematic, C and QBasic
		source available from:

	Microchip BBS:
		In 3rdparty library as PIC84PGM.ZIP
	ftp://bode.ee.ualberta.ca
		/pub/cookbook/comp/ibm/pic84pgm.zip
	ftp://ftp.luth.se
		/pub/misc/microchip/16c84/pic84pgm.zip

	Contact: david.tait@man.ac.uk Author/Designer

=============================================================================


4)  PIC DOCUMENTATION 


4.1) Periodicals that may cover the PIC.

    The Computer Applications Journal (Circuit Cellar Ink)
        - programming and construction articles
        - POB 7694, Riverton, NJ  08077-8784
        - FAX: (203)872-2204
        - Voice orders: (609) 786-0409
        - On-line orders (BBS): (203) 871-1988
        - Email orders: ken.davidson@circellar.com
        - $21.95, $31.95 surface Canada and Mexico,
          $49.95 air all other countries

    Computer Design
         industry announcements and trends
        One Technology Park Drive,
        P.O. Box 990, Westford, MA  01886
         (508)692-0700

    The Computer Journal
        - programming and construction articles
        - PO Box 535, Lincoln  96648

    Dr. Dobbs Journal
        - programming articles, concepts and designs
        - 411 Borel Ave., San Mateo, CA  94402
        - (415)358-9500

    Electronic Engineering Times
        - industry announcements and trends
        - 500-B Bi-County Boulevard, Farmingdale, NY  11735
        - (516)293-3000

    Electronics Now
        - construction articles
        - Box 55115, Boulder, CO  80321-5115
        - $19.97 one year

    Elektor Electronics
        - programming and construction articles
        - World Wide Subscription Service Ltd
          Unit 4, Gibbs Reed Farm, Pashley Road
          Ticehurst TN5 7HE, England
        - 27 UK pounds
     or
        - Old Colony Sound Lab,
        - P.O. Box 243, Peterborough, NH 03458
        - Tel. (603) 924-6371, 924-6526
        - Fax: (603) 924-9467
        - $57 USA and Canada per year

    Embedded Systems Programming
        - programming and systems design articles
        - Miller Freeman Publications
        - 500 Howard St., San Francisco, CA  94105
        - (415) 397-1881

    Microcomputer Journal (formerly Computer Craft)
        - programming and constructions articles
        - 76 N. Broadway, Hicksville, NY  11801
        - $18.95 one year, foreign $23.00, foreign air mail $76.00

    Midnight Engineering
        - 1700 Washington Ave., Rocky Road, CO  81067
        - (719)254-4553

=============================================================================

4.2)  Books on the PIC

	A Beginners Guide to the Microchip PIC     Nigel Gardner
	ISBN: 1 899013 00 8	Printed in the UK by Character Press Ltd.
	Software (on floppy) and hardware guide.  Debugging techniques...
	Available from Polar Electronics in UK  19.95 UK Pounds


=============================================================================

4.3)  Miscellaneous documentation on the PIC

 MicroChip Technology Incorporated
 - application notes



ED Teck. Pubs
Fred Eady
407-454-9905
BBS 407-454-3198
Writes articles for popular magazines.  Has a PIC programmer kit for $70.
BBS available, good source of information, very helpful.

Parallax
Stamps and programmer, etc.
BBS 916-624-7101
Help 916-624-8333

AP Circuits
BBS 1-403-291-9342 (Canada)
Can download EASYTRAX(V2.06), various utilities, GERBER file proofers, etc.

=============================================================================


5)  What's next.	

    I'm working on it...... Suggestions welcome.


    I would like to thank the following individuals who have 
contributed to this accumulation.

	Jory Bell 			<jory@mit.edu>
	Don Lekei			<72677.2623@compuserve.com>
	Eric Smith			<eric@apache.telebit.com>
	Jeff Dague 			<jpdague@iastate.edu>
	Steven M. Davidson		<davidson@its.bldrdoc.gov>
	Ian King			<iek@arrc.salf.ac.uk>
	kalam ?				<asm@kalam.butterfly.com>
	David B. Thomas 		<davidson@its.bldrdoc.gov>
	Martin Vuille			<martin.vuille@synapse.org>
        Alasdair MacLean 		<alasdair@aifh.ed.ac.uk>

NOTE: .......If your name should be here, apologies. Let me know !

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Disclaimer: Inclusion of any code samples in this document does NOT imply any
approval or guarantee as to the suitability of said samples for any purpose
whatsoever other than as a self-training aid.  I.E. If it blows your ICE, 
trashes your hard disc, wipes your backups, burns your building down or just 
plain don't work, #### IT AIN'T MY FAULT #### In the event of judicial ruling
to the contrary, any liability shall be limited to the sum charged on you by
me for the aforementioned document OR nothing, whichever is the lower.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	Copyright (c) 1994 by T.A.Kellett, all rights reserved.
_______________________________________________________________________________
Tom Kellett					< Tom@takdsign.demon.co.uk >
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


