Here's the play list. Very interesting in any case. https://www.youtube.com/playlist?list=PLHx-SwRLl5qoKvdAbFKXyXTMYqnfq7oDZ I also recently bought Boisy's book "CoCo The Colorful History of Tandy's Underdog Computer". I've never owned a CoCo, but it seemed like a very interesting 6809 re...

bugeyedcreepy wrote: ↑Tue Aug 06, 2024 4:34 am if you have any spare I can use to size up for now, I'd be happy to cost one + postage for you to send one to me

Shouldn't be a problem... PM me your address so I can get a quote on the postage.

Curious @lenzjo, can this ps/2 port handle a mouse as well, and is the internal header I see on the card duplicative of the external ps/2 port or is it a secondary interface? EDIT: Wait! just reading up on it now - you know how it is, my ADHD getting away from me & all... I put the kybd port fo...

Have fun with them when they arrive. I've got one in my breadboard at them moment, helping me to debug some 8-bit AVR code. Super easy, compact, and no worries about an LED pulling-down the internal weak pull-up on my GPIO port pins! :geek: Downside is I won't be here :( I'm leaving in about an hou...

According to tracking, NZ Post received my parcel on the 14th July. Today I just received a notification from Royal Mail that they will be delivering it tomorrow the 22nd! Just 8 days from NZ to GB. I've had some GB deliveries that took longer

Awesome stuff! I do really like that Philips ACIA chip (SCC2691). Hadn't seen it before, and nice skinny DIP retro friendly package, plus some nice more advanced features like quadruple buffered receiver data, a good baud rate generator, and definable flow control pins etc. Thanks Greg. Indeed it i...

Just uploaded my latest card for MECB to Github . I also uploaded, a couple of days ago, TLCmon , my take on a monitor program for the 6502 card. I won't be doing much hw/sw now until the 28/29th as I am on a house-hunt "holiday" from tomorrow (21st) until next Sunday, but I will be poppin...

Michael wrote: ↑Tue Jul 16, 2024 1:36 pm Sounds like a good board. Schematic?

I should have the Kicad stuff, inc. gerbers, uploaded to my Github by Friday once I know it's working. In the meantime here's a render:

I appreciate that. Thanks. I plan on doing a few tutorials on this in order to make it easier for the next person. This will be good for the one where I add the 3rd I/O component (the ACIA : real time clock output to the serial port). Who should I credit? "Lenzjo"? Nice set of vids, just ...

Exactly what I needed! Thanks a ton. With your help, we now have a working M6840 timer in the Hopper runtime for the MECB 6502. Next stop, sound chip! Better late than never ;) ... I set up timer 1 in continuous mode and made a real time clock.. first the constants: PTM .EQ PTM_BASE ;=-=-=-= Write ...