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Hi Stew, I hope some of these questions will be answered by John I just wanted to say that the oojamaflip (Y-cable type module) has *NO* power supply So the CoCo-SDC gets the power from the expansion bus but the MSX2+ board is powered individually to avoid problems with the D64 power supply. cheers ...

in fact the Dragon-MMC emulates both the Dragon-DOS and Extended Basic if I remember correctly It seems to be a DDOS1.0 derivative, but there must be some changes (hard/soft) that make it behave in a different way than the strandard DOS1.x do When we start one of these from an SDC bank, problems kee...

Hi Stew,
I forgot to answer your question about interrupts ...
The V9958 sends an interrupt every frame (/FS) to the computer via the NMI pin
We know that this could produce abnormal read/write results as this interrupt is
the one that ends the reading loop (that uses FIRQ)
regards

ok, besides that hardware puzzle, we have the surprise that in both setup configurations using the oojamaflip, so having
the modules in parallel, problems do arise with certain DOS versions whilst a few ones do work flawlessly.
How come a DOS change can overcome a hardware conflict?
regards

Hi Stew, thanks a lot for your help. You are right, the SDC could react for any address from $ff40-$ff5f so could be problems with the MSX2+ module, but what I have explained happens with *no* use at all of the module. Just its presence on the setup creates the problems when accessing the SDC, but *...

Hi Stewart, pleased to hear from you again!! In fact the two modules are set in parallel using the oojamaflip that was built and sold by John Whitworth ... The memory mapping for ports is that one: ; V9958 registers PDATA equ $ff58 ; VRAM data - Port #0 PCONF equ $ff59 ; status, setup and VRAM addre...

Hello, I am coding programms to run on a Dragon 64 and the module Dragon-MSX2+ by John Whitworth As I am streaming data from a CoCo-SDC, my setup consists right now of an "oojamaflip" (by John Withworth) so that the CoCo-SDC sits inside the Dragon case and then the MSX2+ module in the expansion port...

I just wanted to let people know that using \" and \r works flawlessly on any XRoar versions!
Verified with the old one I was using for AGD converted games and the very last one that Ciaran had published.
cheers
pere

Hi Ciaran,
just tested \r and works perfectly.
Thanks a lot!
pere

Hello Ciaran, one more time bugging you with questions/problems I have a bat file that starts XRoar to run the converted AGD games and it has worked flawlessly since the first day. But today I decided to update the xroar.exe to the last version and immediately the 'old' command failed: rem first com...