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'Mac KISS programmer'
1998\11\28@112007 by cloudscraper

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I'm trying to construct the KISS programmer
(http://www.ee.oulu.fi/~lapi/KissPIC/)  for my PowerMac clone (powerbase).

Anyone have any experience with this project - Any gotcha's to keep from
frying my mac?

1). re: The serial port connections in the circuit - are these the way they
should be connnected to the female 8pin DIN on the pcb or should any of
these lines be reversed to match the Mac's output.

2). My powersupply will be an old surplus "brick" 12VDC that is actually
putting out about 14.2 volts. I was going to add a 660 ohm resistor to bring
the voltage down to 13 - 13.5. Any flaws with that idea?

3). Any way to test the serial ports before I put power on this thing to
prevent the wrong flow of electrons into my Mac?

As you can see, I know very little about electronics and any help would be
appreciated.  Thank You.




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1998\11\28@193408 by Mark A Moss

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On Sat, 28 Nov 1998 08:09:08 PST spam_OUTcloudscraperTakeThisOuTspamEXCITE.COM writes:
>2). My powersupply will be an old surplus "brick" 12VDC that is
>actually
>putting out about 14.2 volts. I was going to add a 660 ohm resistor to
>bring
>the voltage down to 13 - 13.5. Any flaws with that idea?

The wall wart's output probably decreases greatly with load.  Check the
output voltage with the expected load before adding resistors to drop the
voltage.

Mark Moss
Amateur Radio Operator, Technician, and General Tinkerer

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1998\11\29@024340 by Heinz Czychun

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At 8:09 AM 11/28/98, .....cloudscraperKILLspamspam@spam@EXCITE.COM wrote:
>I'm trying to construct the KISS programmer
>(http://www.ee.oulu.fi/~lapi/KissPIC/)  for my PowerMac clone (powerbase).
>
>Anyone have any experience with this project - Any gotcha's to keep from
>frying my mac?

I also found that site after purchasing tools for my PIC development on the MAC,
and dismissed it as being, inexpensive yes, but very "one offish". Note the
caveats about the code, and it sounds like its only been tested/used on a
MAC SE. Depending on how the code is written your faster powerMAC may not
provide the proper timing for proper PIC programming. Only a discussion
with the author or satified users will tell. KISS may not be so simple.

I too was worried about connecting developmental hardware to my PowerMAC, so
found a nice SE 30 to play with.

>1). re: The serial port connections in the circuit - are these the way they
>should be connnected to the female 8pin DIN on the pcb or should any of
>these lines be reversed to match the Mac's output.

Check the info at the URL below. It looks like the  pins are as seen from
the MAC serial port.
http://developer.apple.com:80/technotes/hw/hw_10.html

>
>2). My powersupply will be an old surplus "brick" 12VDC that is actually
>putting out about 14.2 volts. I was going to add a 660 ohm resistor to bring
>the voltage down to 13 - 13.5. Any flaws with that idea?
>
I agree with the previous email, but would recommend that the programming
voltage be regulated.

>3). Any way to test the serial ports before I put power on this thing to
>prevent the wrong flow of electrons into my Mac?

The RS232 spec. says the pins should be immune to frying, with +/- 12V
level voltages, but? To help determine if you have the correct pins you can
try the program command and check for activity (pulses) on the TxD+, and
HSK0 pins.

>
>As you can see, I know very little about electronics and any help would be
>appreciated.  Thank You.
>

If you want to build your own, I would recommend checking the Francis Deck
programmer at;
       http://www.execpc.com/~fdeck/mac/index.html

This will require code be burned into a PIC16F84, so you must have a
programmer available.

This programmer is supported by Kevin Coble's MacPIC, Assembler, simulator,
and programmer at;
       http://www.srv.net/~kxc/MacPIC.html

MacPIC also supports WARP 3 (no longer available),WARP17,and PICSTART+
programmers.

I am using Kevin's software (and am pleased with it), with a WARP 3
programmer. I haven't built or used the Deck programmer, but its well
documented, and looks like it will do the job. Perhaps others can comment?

Hope this helps,
Heinz

1998\11\29@123516 by J Nagy

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face
'cloudscraper':

>I'm trying to construct the KISS programmer
>(http://www.ee.oulu.fi/~lapi/KissPIC/)  for my PowerMac...

>1). re: The serial port connections in the circuit -

I run three macs with cables connected as follows:
       I use a Mac DIN8 (printer) cable with a DB9 soldered on the other
end. I made it, as it was easier than searching the universe for one. On
the DB9, short pins 4 & 6, and leave pin 9 open. Then connect pin 1 to
Mac7, 2 to Mac5, 3 to Mac3, 5 to both Mac4 and Mac8, 7 to Mac1, and 8 to
Mac2. Leave pin 6 on the Mac open. This works great for modems as well.

>2). My powersupply will be an old surplus "brick" 12VDC...

       Bad idea. If you can afford a PowerMac, you can spend some bucks on
something better. I'd look for something around 15V (or more), and put an
(adjustable) 317 regulator on it as you're not likely to find a commercial
supply with regulated 13V.

>3). Any way to test the serial ports before I put power on this thing to
>prevent the wrong flow of electrons into my Mac?

       If you are that unsure of what you're doing, maybe you shouldn't be
doing it. In fairness, the RS232 std is quite forgiving though, so you'd
really have to be trying to kill your Mac.


       Jim
       Elm Electronics
Makers of unique integrated circuits
http://www.elmelectronics.com/

1998\11\30@090833 by marbel

picon face
Hi two years ago i saw the simple pip programmer in a magazine (elector)
build it went looking for mac software found Francis Deck's software and program
mer.
Programmed his firmware into pic84 with the pip programmer it worked .
At the moment i am working with Macpic and Francis programmer on the Mac.
MacPic has improved a lot and works great with the programmer
I have no info on the kiss programmer i think you should mail him.

Kevin Coble ( kxcspamKILLspamsrv.net) if he is going to supports it at the moment MacPic
supports warp3 warp17 f Deck PIC Start+ and Promate.

Good luck
Marcel
.....marbeKILLspamspam.....xs4all.nl
Amsterdam

J Nagy wrote:
{Quote hidden}

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