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Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment.

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Old 24th Oct 2020, 2:08 pm   #161
Slothie
Heptode
 
Join Date: Apr 2018
Location: Newbury, Berkshire, UK.
Posts: 528
Default Re: PIC 14 Karen

Quote:
Originally Posted by Timbucus View Post
Oh excellent - I was wondering if there was a way to do that on the PCB the other day so I could play with the ICSP header on my TL and PICKIT3 - mainly as I have been looking into how to use the debugging features - I assume that will need a rethink on the use of some of the pins rather than just popping the display.
I've just tested it and it can read the chip with no problems with the display connected. I'd just assumed it might be a problem but thinking about it with the PORTC pins being inputs while the device is being held in reset, the column transistors will be off and therefore as long as you don't press any keys the programming pins will just be connected to LEDs with nothing connected the other side. So no need to remove the display!

As for the on-chip debugging, I've never tried that but assuming is just port B pins it uses it seems you'll be OK.
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Old 24th Oct 2020, 11:36 pm   #162
Phil__G
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Join Date: Mar 2011
Location: Brotherton, West Yorkshire, UK.
Posts: 51
Default Re: PIC 14 Karen

Again we're all familiar with it here, but for casual visitors, here's a vid of the PIC14:
https://www.youtube.com/watch?v=T-UZoM8T7uw
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Old 24th Oct 2020, 11:48 pm   #163
Timbucus
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Default Re: PIC 14 Karen

Nice message display and build. Good idea to provide videos to explain the threads in context - going to be PICky ( ) it is generally accepted that the MK14 is M K not Mark as it stands for Microcomputer Kit 14 chips (the number needed to make it run) rather than a version number - if you have not found them yet worth reading the old Complement and Add user newsletters: (see Issue 7 for a reference).

https://archive.org/details/ComplementAndAddIssue7
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Old Yesterday, 12:13 am   #164
Slothie
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Join Date: Apr 2018
Location: Newbury, Berkshire, UK.
Posts: 528
Default Re: PIC 14 Karen

Quote:
Originally Posted by Phil__G View Post
Again we're all familiar with it here, but for casual visitors, here's a vid of the PIC14:
https://www.youtube.com/watch?v=T-UZoM8T7uw
Thats a nice quick video. I like the big display! I'm glad I made my display plug-in, as much as I like the authenticity of the calculator display I might need some bigger digits to save my eyes The overlay looks nice too! If only I had a 3D printer I'd make a case for mine. Perhaps I'll look into other options...
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