I'm not sure how to use the 1570 with the 128D, the 1541-II has dip switches to change the device ID from 8 to 9 but I can't see any on the 1570.

Hi everyone

I'm a long time C64 user who upgraded to a C128 a few years ago, and then finally to a C128D (PAL, CR I believe, with the metal case) this month. Having paid a hefty price for it on E-bay (compared to what some of you paid) I am now concerned it is faulty, but the fault is very strange. I have the demo disk "The Very First" which came bundled with the machine. I've got a copy of this disk on my C128 too so I know what to expect, but running the disk on the C128D yeilds some very strange results. Let me show you what I mean, the picture below is the graphics demo running on my C128 (picture taken with my digicam pointing at my 1084s monitor):-



Now, this is what happens when I run the demo on my C128D:-



Likewise the colour demo, running correctly on the C128:-



And then running on the 128D:-



The C128 is using a 1570 drive and the 128D is using it's internal 1571. I'm using the same copy of The Very First on both machines obviously. At this point I was worried that my new machine was faulty, so I tried a bunch of other programs. I tried the Rocky Horror Show C128 version, that worked just fine. I tried CP/M in 40 and 80 column mode, again fine. I tried a whole bunch of 64 games including Mayhem in Monsterland, Beach Head 2, Alien Syndrome and Armalyte and they all worked fine.

Is there a problem with my machine or not? Hope someone can shed some light on this for me.

Thank you in advance!