Was there a Rockwell KIM-1? A myth or? Yes and no.

There is a KIM-1 packaged and sold by Rockwell in 1977. I bought one in 1977.
No, it is a MOS Technology produced KIM-1 PCB.

Yes, Rockwell added documents with Rockwell title pages and contents 99% written by MOS Technology.
The Rockwell KIM-1 is just an OEM product!

New good quality scans added to the Manuals page
– MCS6500 Hardware Manual August 1975 First Edition, Version 6500-10, with errata letter. Not the usual 6500-10A but the rare first edition. No ROR instruction documented!
– MCS6500 Programming Manual by Synertek, version 6500-50. Not the First Edition alas, the contents are the 6500-50A version.

I now have two first edition MOS Technology manuals:
– MCS6500 Hardware Manual August 1975 First Edition, Version 6500-10
– KIM-1 User Manual First Edition, January 1976, no version but could be 6500-15. The newer versions are version 6500-15B

Still missing, but it does exist somewhere, is
– MCS6500 Family Programming Manual, 6500-50. All scans, including mine, are version 6500-50B.

This is the title page of MCS6500 Family Programming Manual, 6500-50, of which no scan is knwon yet.

Microsoft’s 6502 BASIC is now Open Source, and that includes KB9 or as it is officially called:

MOS TECH 6502 BASIC V1.1
COPYRIGHT 1977 BY MICROSOFT

Microsoft’s 6502 BASIC is now Open Source

“Now, for the first time, this influential 6502 version is truly yours to explore, modify, and share.”

This means that we are allowed to distribute and modify KB9 and derivates without breaking licenses!

Also see the pagetable post from 2005 that explains a lot about this source.

The Easter Egg in KB9:

Answer ‘A’ to the Memory Size Qustion and see this:

Now we all know about Bill Gates. Ric Weiland is less known. Second Micro-Soft employee. Left 1988, and became a philanthropist, see Wikipedia.

The license that goes with 6502 BASIC is now:

MIT License

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE

The 6502 50th Anniversary Computer Badge (1975-2025), variant of Lee Hart’s 6502 badge, to celebrate the 6502 birthday.

On the German forum64.de

#50birthday6502