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Here's an interrupt driven (IRQ) real-time-clock that you can use in your own BASIC programs. The machine code routine is position independent and DragonDOS compatible. 10 ' INTERRUPT DRIVEN 20 ' REAL-TIME-CLOCK V1.0 30 ' BY STEVE EVANS 40 ' 30TH MARCH, 2012 50 ' 60 'LOCATION 252 = IRQ COUNT 70 'LOC...

I'm pretty sure that machine will be fitted with a MC6847T1/XC80652P VDG chip, and a MC6885 SAM chip, which seem to be impossible to buy anywhere. If ever you find a supplier for any of those chips, please let me know.

That's the excellent Korean made (1985) 64K RAM model with Extended Color BASIC 1.1, so its well worth repairing. I'm just sorry that I can't help you with this problem. Perhaps one of the (very few) forum hardware experts will reply to this one.

Regards,
Steve

I posted my own copy of this game on the 9th of January, 2011. I haven't checked but its possible that my copy may have been modified. I uploaded it in response to this post.

viewtopic.php?f=7&t=360

I posted a bug fix release of this game on the 9th of January, 2011.

viewtopic.php?f=7&t=358

Because there's no monitor port on the CoCo 1/2 models this sort of problem can be difficult to diagnose without proper test equipment. Try entering MOTOR ON at the command prompt and listen for the relay click. Although this test won't help with your problem it will help to determine if the compute...

Title: Pimania Author(s): Mel Croucher, Christian Penfold, Chris Edwards Publisher: Automata UK Released: 1982 he Golden Sundial of Pi has been hidden in Time and Space. Will you be the first seeker to locate this fabulous treasure, and be awarded with the exquisitely crafted original, made from gol...

Title: Fire Copter Author: Dale Lear Publisher: Adventure International Released: 1982 FIRE COPTER by Dale Lear Down there -- below and to the right -- tongues of fire play across the face of a skyscraper like living things. Inside the copter, runaway temperatures nearly rip the consciousness from y...

Name is Mike Ortloff, SysOp of the (former, long gone) StG leaf node "TattooU" - I was one of the first to run a 6309 in my CoCo back in '92. Even wrote an article about it in the OS/9 UnderGround Hi Mike, I would be interested in reading your article. Can you supply a copy of that article or a lin...

Excellent, Thanks! I have updated the archive with a copy of your inlay card, an updated Readme.txt file, and a CoCo/Dragon compatible version of Wormtube.