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

I am administrator of several Facebook groups. But not at the moment. So if you came here looking why I am absent on Facebook starting August 22, read this: I am well, my Facebook account is not.

I am not a fan of Meta and the way they treat privacy, so I do not post any personal info there anymore and unfriended nearly all.
Meta also started to target personal advertisement in a more aggressive way, even blocking access for a couple of seconds on the phone to force me to accept that.
I stopped therefore a long time ago posting personal information.

But these groups are retro computing related, with a nice atmosphere and many members, of which I am the administrator and a major contributor:
– KIM-1, SYM-1, AIM 65, Elektor Junior and clones (over 1000 members)
– 6502 CPU family (over 4000 members)
– The School of Wirth (a dozen members)

Out of the blue Facebook blocked my access on August 22, I have not obeyed their ‘community rules’. Must be because I link to my websites a lot. Facebook hates people going offsite!

At the moment I am not allowed back in, I have appealed and wait for Facebook. It could mean permanent blocking and the groups will suffer.
There are backup admins, so they may survive.

If I am permanently blocked, my regards and good wishes to all members of the groups I administer!