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Have you tried swapping the SAM (MC6883P/SN74LS783N) chip?

KenH wrote:Do you know which IC stores the lower 8K of rom and which one has the upper 8k?

No.

KenH wrote:On the Dragon 32 the 16k rom is split into two roms: IC17 & IC18.
On my Dragon, IC17 is socketed while IC18 is soldered. Is this the standard configuration?

Some boards come with both ICs socketed. Others with both soldered.

Thanks Ken. I will take a look at the source code when I get some spare time.

Could you post a link to your source code? I wasn't able to find it in the toolshed repo . thanks Ken That's an old, broken link you've got there (thanks Sourceforge for not providing redirection of old locations...). You can search "toolshed" on sourceforge.net then click Code and you'll find: htt...

Thanks Ken!

As promised the exclusive CF image for Dragon/Tanos: http://www.mediafire.com/?40jau3q4zaewk8o There is a lot of coco2/3 stuff on it, but from 100 - 131 we have dragon dos disks converted to rs-dos. So you can play moon cresta, back track, chuckie egg direct from SuperIDE. Also two OS-9 flavours: o...

tormod wrote:Note that 17 and 18 are swapped as compared to the D64. If this is an error maybe someone can fix up the filenames too?

IC18 (marked as IC34 on D64 PCB) is the 32K mode BASIC ROM, and IC17 (marked as IC37 on D64 PCB) is the 64K mode BASIC ROM.

tormod wrote: Again, is the Tano ROM identical to Dragon 64?

Most Dragon 64 ROMs are identical to the Tano. The early Dragon 64 (32K mode) ROMs have 0x3634 '64' at $FFF0:FFF1.

I already own a SuperIDE, and am considering buying another one. Are any other Dragon owners interested in buying one from cloud9tech.com for US $110 + Shipping?