Compiling a list of SC/MP Project Boards

[HelloWorld]

Hello Group, It's Craig.

I am doing a series of videos on the Digi-Key Nibbler which is a SC/MP based single board computer.

At some point before I am done with these videos, I would like to include a rundown of the available SC/MP project boards (both hardware and emulator based). Since a number of the projects are derivatives of other projects, or someone lays a project down and someone else picks it back up, etc., I am not always sure who begat whom, which is the latest, and which projects are still a good build even if there is a revised version from someone else.

Maybe there is master list already that i just haven't found, but since members here seem to be the fountain of knowledge for all things SC/MP, it is probably the best place to start.

I have raided sites like PhilG's and others and have a 'work in progress' list on my project page, but I could really use additional input & corrections... project page (link)

Ideally, I would like to get kit creators to post here or PM me--

• Preferred kit name
• Elevator Pitch for kit
• Link to project page
• Image
• note if SC/MP or emulated
• Estimated cost to complete

Cheers
Craig

[nlpe1goo]

Hi Craig.

Welcome in this forum.
You can find my SC/MP design in this thread: https://www.vintage-radio.net/forum/showthread.php?t=221369
On hackaday.io I published the project for the interested public. The link is: https://hackaday.io/project/203834-my-first-second-computer-the-scmp

[Phil__G]

Hi Craig, welcome aboard. Budgetronics do a nice PIC14 kit:
https://www.vintage-radio.net/forum/showthread.php?p=1537692#post1537692
Martin in .cz does the most accurate MK14 reproduction pcb to date, & add-ons: https://www.8bity.cz/

[ortek_service]

Hi Craig,

Welcome to the forum, and thanks for your videos.

Whilst not supplying actual full-kits, ChrisOddy does PCB's & PROM's etc. for Close-Replica's of the MK14 (Issue V) and the MK14 VDU etc.

As well as an updated 'Enhanced' 'MK14E' version, that uses rather-more commonly still-available vintage-IC's for the Memory etc. Plus it is designed to be more-easily expandable, with a backplane / riser for multiple expansion cards as well as rather-more configurable
- So you can easily-change the Memory-map to run NIBL(E), that wasn't too practical to do on an original MK14.

There's also a wealth of info and documentation / software downloads on his website, with main index page, here.

https://theoddys.com/acorn/scmp.html

- Which also includes details on / and construction details for replicas of the SC/MP based SOFTY 1 & 2 EPROM Programmers (That can also function as an In Circuit Emulator).

The main MK14 page, from there: https://theoddys.com/acorn/acorn_system_computers/mk14/mk14.html
also has details on the MK14 original Tape & VDU Interfaces. Plus also the PROM-Blower Peripherals.
As well as full details on the NS Introkit, along with both KITBUG plus SCMPKB (= original MK14 SCIOS-1) firmware (source listings & binaries)

[Mark1960]

Is there another Ian with an MK14 replica or is this a duplicate of Slothies under his real name?

I think all the PIC14s should give attribution to Karen Orton.

[SiriusHardware]

Originally Posted by Mark1960

Is there another Ian with an MK14 replica or is this a duplicate of Slothies under his real name?

Did you intend to post a link, Mark? Slothie's MK14 replica PCB which we refer to as the 'Issue VI' is often also referred to by his real name of Ian K Rolfe because his name is on the PCB.

[Mark1960]

The two projects were listed on Craig’s project page, lined in the OP.

Originally Posted by SiriusHardware

Did you intend to post a link, Mark? Slothie's MK14 replica PCB which we refer to as the 'Issue VI' is often also referred to by his real name of Ian K Rolfe because his name is on the PCB.

[SiriusHardware]

OK The 'Ian's MK14' 'button, if you click on it, leads to images of the MK14E which is Chris Oddy's project, so that's not quite right.

I had wondered if Ian (Realtime) had made one as well.

There are also Jerry's (JM Precision) MK14 'issue 0' replica PCBs which were really the first available within the UK - not sure if he is still making them though.

If you want a replica with the address, data and control buses wired to the rear edge connector - which no original MK14 ever had, Slothie's 'Issue VI' is still the most useful replica of the base machine, otherwise you'd need to go for Chris's MK14E which includes that feature... and then some. I don't think even Chris's close replica of the original issue V has the buses tracked to the rear edge.

[SiriusHardware]

What about the 'issue VII' spin of Slothie's replica PCB, the one which was relaid for proper Cherry Key switches? Do we have a link to that one?

[Michael Haardt]

I do not provide kits, but there are schematics in KiCAD and Gerber files:

https://www.moria.de/tech/scmp/cpuscmp/
https://www.moria.de/tech/scmp/hexio/

The NDR Klein Computer is a modular system from the 80s, which allowed to use various CPUs, most popular the Z80 and the 68008.

[SiriusHardware]

An image of my build of Slothie's 'issue VI' replica PCB. I will try to dig up some more - I think I have photos of the bare PCB and maybe the build instructions as well - and pass them on to Craig.

Does anyone have a link to a still-alive online package containing the PCB files for the issue VI?

[Mark1960]

I think Ian attached the files to one of the posts in his MK14 replica thread. I have a couple of bare pcbs if you don’t find your photos.

[Mark1960]

Gerbers are attached to post #15 of the MK14 vdu thread.
https://www.vintage-radio.net/forum/showpost.php?p=1222187&postcount=15

Link to the thread here
https://www.vintage-radio.net/forum/showthread.php?t=162766

And the Link to Slothie’s MK14 replica design thread here.
https://www.vintage-radio.net/forum/showthread.php?t=145663

[Red to black]

Can I just interject here and ask what happened to Slothie ? I noted he did complain about his stuff being in storage however he seemed to disappear, I may have missed something (probably) here but I did follow his topics

[Phil__G]

Originally Posted by Red to black

Can I just interject here and ask what happened to Slothie ?

Sorry to say the MK14 Isue 6 v1.2 was Slothies swansong. He's very much missed here.

Originally Posted by Mark1960

Gerbers are attached to post #15 of the MK14 vdu thread.
https://www.vintage-radio.net/forum/showpost.php?p=1222187&postcount=15

Ian seemed to refer to the most recent board as issue 5.5 but I've done a CRC check on the gerbers and
the file Mark linked above is in fact the 'current issue 6' v1.2 (its the one I used)
Ians own domain has unfortunately but expectedly been reclaimed.

[SiriusHardware]

Can I just interject here and ask what happened to Slothie ?

Slothie gradually posted less and less and then stopped posting all together, so I eventually phoned the last place I'd had as a contact address for him. I was informed that he had sadly passed away a few months before. For much of the time that he was posting here he was already very ill, but he never liked to make anything of it and rarely mentioned it when posting.

Until you asked, we'd just never had the heart to declare him gone.

[HelloWorld]

Originally Posted by nlpe1goo

Hi Craig.

Welcome in this forum.
You can find my SC/MP design in this thread: https://www.vintage-radio.net/forum/showthread.php?t=221369
On hackaday.io I published the project for the interested public. The link is: https://hackaday.io/project/203834-my-first-second-computer-the-scmp

Hi Nick, I have added your board and the link to the hackaday project page. please let me know if I need to make changes. Also, what do you estimate to be the cost to build?
thanks
Craig

[HelloWorld]

Originally Posted by Mark1960

Is there another Ian with an MK14 replica or is this a duplicate of Slothies under his real name?

I think all the PIC14s should give attribution to Karen Orton.

Thanks, this was my exact problem. being new, i don't know which name goes with which username. I removed the Ian listing and just have the one under Slothies.

[HelloWorld]

Originally Posted by SiriusHardware

An image of my build of Slothie's 'issue VI' replica PCB. I will try to dig up some more - I think I have photos of the bare PCB and maybe the build instructions as well - and pass them on to Craig.

Does anyone have a link to a still-alive online package containing the PCB files for the issue VI?

Thanks, i have used this photo for the time being.

[HelloWorld]

Originally Posted by Michael Haardt

I do not provide kits, but there are schematics in KiCAD and Gerber files:

https://www.moria.de/tech/scmp/cpuscmp/
https://www.moria.de/tech/scmp/hexio/

The NDR Klein Computer is a modular system from the 80s, which allowed to use various CPUs, most popular the Z80 and the 68008.

Can you send me a nice photo of the hardware? I couldn't find it on your page.
Also, this link is broken on your cpuscmp page
y! The >NDR Klein computer is a great m

thanks